Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L1/00—Arrangements for detecting or preventing errors in the information received
  • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
  • H04L1/0045—Arrangements at the receiver end

Definitions

• the present invention relates to the field of communications technologies, and in particular, to a signal processing method and system, and a transmitting end and a receiving end.
• the information received and demodulated by the receiving end may be wrong, that is, the information has an error during the propagation.
• channel coding technology with certain error correction capability is widely used in communication systems.
• the channel coding is to match the statistical characteristics of the channel, and to distinguish the path and improve the reliability of the communication.
• some new supervised symbols are added according to a certain rule to implement the error correction coding, such as Read-Solomon, error correction coding techniques such as Convolution codes.
• the basic implementation method of the above channel coding technology is to attach some supervised symbols to the information (information symbols) to be transmitted at the transmitting end, and the supervised symbols and the information symbols are associated or constrained by certain certain rules.
• the receiving end checks the relationship between the information symbol and the supervised symbol according to a predetermined rule. Once an error occurs in the transmission, the relationship between the information symbol and the supervised symbol is destroyed, so that the receiving end can find the error or even correct the error.
• the line rate of the physical layer is generally relatively fixed (usually the maximum user rate allowed), and the actual data to be sent (also referred to as actual service data, That is, the rate at which the user needs to transmit user data or management data is not necessarily a uniform rate.
• the actual data to be sent also referred to as actual service data, That is, the rate at which the user needs to transmit user data or management data is not necessarily a uniform rate.
• one of the most common processing methods currently is to perform idle data filling processing on the actual data to be sent, that is, to fill a certain number of bytes in the actual data.
• the conventional signal processing method in the prior art is: filling the actual data with a certain number of bytes or a number of bits of padding data at the transmitting end, and then performing error correction coding processing on the information symbols obtained after the padding, and then modulating and transmitting. , which may also include steps such as scrambling code processing; after channel transmission, Demodulation and error correction decoding processing is performed on the received information symbol at the receiving end. If the transmitting end includes scrambling code processing, descrambling processing is also required.
• the prior art processing method has the following disadvantages: The element includes actual data (business or management data) and padding data (such as dummy/idle data), since both actual data and padding data may be erroneous during channel transmission. Therefore, the receiving end performs error correction decoding processing on the actual data and the padded data included in the information symbol obtained after demodulation, but in reality only the actual data is the data that we finally need, which causes a certain error correction capability. Waste.
• a technical problem to be solved by embodiments of the present invention is to provide a signal processing method and system, and a transmitting end and a receiving end for improving effective coding gain.
• the embodiment of the invention provides a signal processing method, including:
• the signal transmitted by the channel and transmitted by the channel includes the first actual data and the first padding data; wherein the first actual data is the second actual data sent by the sending end The data is changed during the channel transmission process, and the first padding data is obtained by the second padding data inserted by the transmitting end into the second actual data during channel transmission;
• the receiving end demodulates the signal transmitted through the channel to obtain first data; the receiving end replaces the first padding data in the padding position in the first data with the first Filling the data to obtain the second data;
• the receiving end performs error correction decoding processing on the second data.
• the embodiment of the present invention further provides a signal processing system, including a transmitting end and a receiving end, where the sending end is configured to insert the second padding data in the second actual data to be sent; And performing error correction coding processing on the data obtained after inserting the second padding data;
• the transmitting end is further configured to perform signal modulation on the data obtained by the error correction coding process; the transmitting end is further configured to send the signal obtained by the signal modulation to the receiving end; Receiving a signal transmitted through the channel sent by the transmitting end;
• the receiving end is further configured to perform signal demodulation on the channel-transmitted signal to obtain a first Data
• the receiving end is further configured to replace the first padding data in the padding position in the first data with the second padding data to obtain second data;
• the receiving end is further configured to perform error correction decoding processing on the second data.
• the embodiment of the present invention further provides a sending end, where the sending end includes:
• a filling module configured to insert the second padding data into the second actual data to be sent
• an encoding module configured to perform error correction coding processing on data output from the padding module
• a modulation module configured to The data output by the encoding module performs signal modulation
• a sending module configured to send a signal output by the modulation module to the receiving end.
• the embodiment of the present invention further provides a receiving end, where the receiving end includes:
• a receiving module configured to receive a channel-transmitted signal sent by the transmitting end, where the signal transmitted through the channel includes first actual data and first padding data; where the first actual data is sent by the sending end
• the second actual data is obtained during the channel transmission process, and the first padding data is obtained by the second padding data inserted by the transmitting end into the second actual data during channel transmission;
• a demodulation module configured to perform signal demodulation on the signal transmitted through the channel
• a replacement module configured to replace the first padding data in a padding position in data output by the demodulation module with the second padding data
• a decoding module configured to perform error correction decoding processing on the data output by the replacement module.
• the first padding data in the information symbol that may be erroneous in the channel transmission process is replaced with the second padding data filled in the transmitting end. Therefore, it is not necessary to perform error correction decoding on the first padding data, and the error correction capability of the error correction decoding can be concentrated on the actually useful actual data, thereby improving the effective coding gain of the data.
• FIG. 1 is a flow chart of a first embodiment of a signal processing method of the present invention
• FIG. 2 is a flow chart of a second embodiment of the signal processing method of the present invention
• FIG. 3 is a flow chart of a third embodiment of the signal processing method of the present invention
• Figure 5 is a flow chart of a fourth embodiment of the signal processing method of the present invention
• Figure 5 is a flow chart of a fifth embodiment of the signal processing method of the present invention
• Figure 6 is a flow chart of a sixth embodiment of the signal processing method of the present invention
• FIG. 8 is a flow chart of the eighth embodiment of the signal processing method of the present invention
• FIG. 9 is a flowchart of the ninth embodiment of the signal processing method of the present invention
• FIG. 11 is a block diagram showing the structure of the first embodiment of the transmitting end of the present invention
• FIG. 11 is a block diagram showing the structure of the first embodiment of the transmitting end of the present invention
• FIG. 12 is a block diagram showing the detailed structure of the first embodiment of the transmitting end of the present invention
• Figure 14 is a block diagram showing the structure of a second embodiment of the transmitting end of the present invention
• Figure 15 is a block diagram showing the structure of the transmitting end of the present invention
• Figure 16 is a block diagram showing the third embodiment of the transmitting end of the present invention
• Figure 17 is a block diagram showing the structure of the fourth embodiment of the transmitting end of the present invention
• Figure 18 is a block diagram showing the structure of the fourth embodiment of the transmitting end of the present invention
• Figure 20 is a block diagram showing the structure of the first embodiment of the receiving end of the present invention
• Figure 21 is a block diagram showing the structure of the first embodiment of the receiving end of the present invention
• Figure 22 is a block diagram showing the detailed structure of the first embodiment of the receiving end of the present invention
• Figure 24 is a block diagram showing the structure of the second embodiment of the receiving end of the present invention
• Figure 25 is a block diagram showing the structure of
• Figure 30 is a block diagram showing the detailed structure of the fifth embodiment of the receiving end of the present invention.
• Figure 31 is a block diagram showing the structure of an embodiment of the signal processing system of the present invention.
• the possible filling position in the received signal may be
• the padding data (first padding data) that is erroneous during transmission is replaced with the padding data (second padding data) filled before the signal transmission, so it is not necessary to correct the padding data when the signal is subjected to error correction decoding.
• the error correction capability is concentrated on the actual data that is really useful, thereby increasing the effective coding gain. The details are described below separately.
• the padding bytes or the second padding data in the following embodiments may be idle data or other specific data, such as a duplicate byte identifying a padding location, an idle cell of an ATM, 00 16 or 7 16 or the like.
• the signal modulation/demodulation modes used in the following embodiments include, but are not limited to, at least one of the following modes: Orthogonal Frequency Division Multiplexing (OFDM), Orthogonal Frequency Division Multiple Access (OFDMA) Division Multiple Access), Discrete Wavelet Transform Orthogonal Frequency Division Multiplexing (DWT-OFDM), Differential Phase Shift Keying (DPSK), or Quadrature Amplitude Keying (QAM, Quadrature Amplitude Modulation) and so on.
• OFDM Orthogonal Frequency Division Multiplexing
• OFDMA Orthogonal Frequency Division Multiple Access
• DWT-OFDM Discrete Wavelet Transform Orthogonal Frequency Division Multiplexing
• DPSK Differential Phase Shift Keying
• QAM Quadrature Amplitude Keying
• the error correction encoding/decoding methods used in the following embodiments include, but are not limited to, at least one of the following: Low Density Parity Check Code (LDPC), Reed-Solomon Code (RS, Reed-Solomon) Code ) or TURBO code, etc.
• LDPC Low Density Parity Check Code
• RS Reed-Solomon Code
• TURBO code TURBO code
• the filling position (ie, the position at which the first or second filling data is inserted) in the following embodiments may be actual Before or after the data, of course, it can also be located in the middle of the actual data.
• the specific filling position can be selected by a person skilled in the art according to the actual situation.
• data may be referred to as a signal after being modulated, and the signal may become data after being demodulated.
• a first embodiment of the method of the present invention provides a signal processing method, including the following steps:
• Step 101 The receiving step, that is, the receiving end receives the signal transmitted by the transmitting end and transmitted by the channel; the received signal transmitted through the channel includes the first actual data and the first filling data, and the filling position of the first filling data It may be before or after the first actual data, and of course it may be inserted in the first actual data.
• the first actual data is obtained by a possible change in the second actual data sent by the transmitting end during the channel transmission process
• the first padding data is a second padding that is filled by the transmitting end to the second actual data before the transmitting end sends the signal.
• the data is obtained through possible changes in the channel transmission process, and the above-mentioned changes of the second actual data and the second padding data may be caused by channel attenuation and noise during channel transmission;
• Step 102 The demodulation step, that is, the receiving end demodulates the received signal transmitted through the channel to obtain the first data;
• Step 103 the replacing step, that is, the receiving end replaces the first padding data in the padding position in the first data with the second padding data to obtain the second data;
• Step 104 The decoding step, that is, the receiving end performs the second data error correction decoding process.
• the core idea is to replace the first padding data at the padding position with the second padding data before the receiving end performs error correction decoding on the received signal.
• the second padding data is the original padding data that the transmitting end fills the second actual data before transmitting the signal, and the second padding data is located in the padding position in the second actual data, after the channel transmission may be due to the transmission process.
• Signal attenuation and noise or other reasons the signal received by the receiving end may not coincide with the signal sent by the transmitting end, wherein the first actual data and the second actual data may be inconsistent, the first filling data and the second filling data It may also be inconsistent.
• the prior art practice is to perform error correction decoding on both the first actual data and the first padding data, but in the embodiment, error correction is performed.
• error correction is performed.
• the error correction decoding capability is concentrated on useful actual data (first actual data), which can be improved. Effective coding gain.
• the method may further include a processing flow corresponding to the transmitting end, as shown in the second embodiment of the method of the present invention below.
• a second embodiment of the method of the present invention provides a signal processing method, including the following steps:
• Step 201 The filling step, that is, the sending end inserts the second padding data in the second actual data to be sent;
• Step 202 Encoding step, that is, the sending end performs error correction coding processing on the data obtained by inserting the second padding data;
• Step 203 a modulation step, that is, the transmitting end performs signal modulation on the data obtained by the error correction coding process;
• Step 204 Sending, that is, the sending end sends the signal obtained by the above signal modulation to the receiving end;
• Step 205 The receiving step is that the receiving end receives the signal transmitted by the sending end and transmits the channel-transmitted special signal;
• Step 206 the demodulation step, that is, the receiving end demodulates the signal transmitted through the channel to obtain the first data
• Step 207 the replacing step, that is, the receiving end replaces the first padding data in the padding position in the first data with the second padding data to obtain the second data;
• Step 208 The decoding step, that is, the receiving end performs the second data error correction decoding process.
• steps 201 to 204 are processing steps of the transmitting end
• steps 205 to 208 are processing steps of the receiving end
• steps 205 to 208 correspond to steps 101 to 104 of the first embodiment of the method.
• the signal sent by the transmitting end is received by the receiving end after being transmitted through the channel.
• the signal received by the receiving end may not be consistent with the signal sent by the transmitting end due to a transmission error that may occur in the channel transmission, wherein the transmitted data may be inconsistent.
• the data is replaced by the second padding data inserted by the transmitting end at the padding position, so that the error correction decoding of the padding data is not required, and the ability of error correction decoding is concentrated on the useful actual data, which can improve the effective coding gain.
• the transmitting end can also increase the scrambling processing of the data, and the corresponding receiving end can increase the descrambling processing of the data.
• the transmitting end can also increase the scrambling processing of the data, and the corresponding receiving end can increase the descrambling processing of the data.
• a third embodiment of the method of the present invention provides a signal processing method, including the following steps:
• Step 301 the scrambling code step, that is, the second actual data to be sent by the transmitting end is scrambled; step 302, the filling step, that is, the sending end inserts the second padding data in the second actual data after the scrambling process;
• Step 303 Encoding step, that is, the sending end performs error correction coding processing on the data obtained after inserting the second padding data;
• Step 304 a modulation step, that is, the transmitting end performs signal modulation on the data obtained by the error correction coding process;
• Step 305 the sending step, that is, the sending end sends the signal obtained by the above signal modulation to the receiving end;
• Step 306 The receiving step, that is, the receiving end receives the signal transmitted by the transmitting end and transmitted through the channel;
• Step 307 the demodulation step, that is, the receiving end demodulates the signal transmitted through the channel to obtain the first data
• Step 308 the replacing step, that is, the receiving end replaces the first padding data in the padding position in the first data with the second padding data to obtain the second data;
• Step 309 the decoding step, that is, the receiving end performs error correction decoding processing on the second data to obtain third data;
• the first actual data is restored to the second actual data sent by the transmitting end;
• Step 310 The descrambling step, that is, the receiving end performs descrambling processing on the second actual data included in the third data. Since only the actual data is scrambled at the transmitting end, at the receiving end It is also only necessary to descramble the actual data.
• the embodiment adds a scrambling step to the transmitting end, and adds an interference step to the receiving end.
• the scrambling code process can make the scrambled signal spectrum more suitable for signal transmission, and also The confidentiality of the communication can be increased. It should be noted that the scrambling step and the descrambling step in this embodiment are optional steps.
• a fourth embodiment of the method of the present invention provides a signal processing method, including the following steps:
• Step 401 the filling step, that is, the sending end inserts the second padding data in the second actual data to be sent;
• Step 402 The scrambling code step, that is, the sending end performs scrambling processing on the data obtained after inserting the second padding data;
• Step 403 Encoding step, that is, the sending end performs error correction coding processing on the data obtained by the scrambling code processing;
• Step 404 a modulation step, that is, the transmitting end performs signal modulation on the data obtained by the error correction coding process
• Step 405 the sending step, that is, the sending end sends the signal obtained by the above signal modulation to the receiving end;
• Step 406 The receiving step is that the receiving end receives the signal that is sent by the sending end and is transmitted through the channel;
• Step 407 the demodulation step, that is, the receiving end demodulates the signal transmitted through the channel to obtain the first data
• Step 408 the replacing step, that is, the receiving end replaces the first padding data in the padding position in the first data with the second padding data to obtain the second data;
• Step 409 the decoding step, that is, the receiving end performs error correction decoding processing on the second data to obtain third data;
• Step 410 The descrambling process, that is, the receiving end performs descrambling processing on the third data.
• a fifth embodiment of the present invention provides a signal processing method, including the following step 501, the filling step, that is, the transmitting end inserts the second padding data into the second actual data to be sent;
• Step 502 Encoding step, that is, the sending end performs error correction coding processing on the data obtained by inserting the second padding data;
• Step 503 The scrambling code step, that is, the sending end performs scrambling processing on the data obtained by the error correction coding process;
• Step 504 The step of modulating, that is, the sending end performs signal modulation on the data obtained by the scrambling code processing;
• Step 505 Sending step, that is, the sending end sends the signal obtained by the above signal modulation to the receiving end;
• Step 506 The receiving step is that the receiving end receives the signal transmitted by the sending end and transmits the channel through the channel;
• Step 507 the demodulation step, that is, the receiving end demodulates the signal transmitted through the channel to obtain the first data
• Step 508 the descrambling step, that is, the receiving end performs descrambling processing on the first data;
• Step 510 The decoding step, that is, the receiving end performs error correction decoding processing on the second data.
• the scrambling step and the descrambling step are different in the process.
• the scrambling step and the descrambling step in this embodiment are optional steps.
• the scrambling code processing step at the transmitting end and the descrambling processing step at the receiving end are included, but the scrambling code processing step and the descrambling processing step are different in the signal processing flow.
• One of ordinary skill in the art may select one or more implementations according to actual conditions.
• the interleaving and deinterleaving steps may be added at the transmitting end and the receiving end respectively.
• the following sixth embodiment is specifically described.
• a sixth embodiment of the method of the present invention provides a signal processing method, including the following steps. Step:
• Step 601 the filling step, that is, the sending end inserts the second filling data into the second actual data to be sent;
• Step 602 Encoding step, that is, the sending end performs error correction coding processing on the data obtained after inserting the second padding data;
• Step 603 The interleaving step, that is, the sending end performs interleaving processing on the data obtained by the error correction encoding process;
• Step 604 a modulation step, that is, the transmitting end performs signal modulation on the data obtained by the above interleaving processing;
• Step 605 the sending step, that is, the sending end sends the signal obtained by the above signal modulation to the receiving end;
• Step 606 The receiving step is that the receiving end receives the signal transmitted by the transmitting end and transmitted through the channel;
• Step 607 the demodulation step, that is, the receiving end demodulates the signal transmitted through the channel to obtain the first data
• Step 608 the deinterleaving step, that is, the receiving end performs deinterleaving processing on the first data;
• Step 609 the replacing step, that is, the receiving end replaces the first padding data in the padding position in the data obtained by the deinterleaving process For the second padding data described above, to obtain second data;
• Step 610 The decoding step, that is, the receiving end performs error correction decoding processing on the second data.
• the interleaving step of the transmitting end and the deinterleaving step of the receiving end are not limited to the sequence described in this embodiment.
• the interleaving step may also be before the filling step or the encoding step, and correspondingly, the de-interleaving step may also be located in the replacement.
• the step or the decoding step one of ordinary skill in the art can make appropriate settings according to the actual situation.
• interleaving step and the de-interleaving step in this embodiment are optional steps.
• the filling step may specifically include a rate adaptation step and an insertion step
• the replacement step may include a detection step and a replacement step, respectively, and the seventh to tenth embodiments of the method are specifically described below.
• a seventh embodiment of the method of the present invention provides a signal processing method, including the following steps. Step:
• Step 701 The rate adaptation step, that is, the rate at which the transmitting end acquires the second actual data to be sent and the fixed line rate of the physical layer, and determines according to the rate of the second actual data to be sent and the fixed line rate of the physical layer. The length of the data to be filled;
• Step 702 the inserting step, that is, the sending end inserts the second padding data of the specified length into the second actual data to be sent, so that the information symbol obtained after inserting the second padding data (including the above-mentioned to be sent
• the rate of the second actual data and the second padding data is adapted to the fixed line rate of the physical layer; wherein the specified length is the length of the above-mentioned padding data;
• Step 703 The encoding step, that is, the sending end performs error correction coding processing on the data obtained by inserting the second padding data of the specified length.
• Step 704 A modulation step, that is, the transmitting end performs signal modulation on the data obtained by the error correction coding process.
• Step 705 a sending step, that is, the sending end sends the signal obtained by modulating the signal to the receiving end;
• Step 706 The receiving step, that is, the receiving end receives the signal transmitted by the transmitting end and transmitted by the channel;
• Step 707 a demodulation step, that is, the transmitting end demodulates the received signal transmitted through the channel to obtain the first data
• Step 708 the detecting step, that is, the receiving end detects the filling position in the first data;
• Step 709 the replacing step, that is, the receiving end replaces the first filling data in the filling position in the first data with the second filling Data to obtain second data;
• Step 710 The decoding step, that is, the receiving end performs error correction decoding processing on the second data.
• This embodiment further specifically describes the filling step and the replacement step as compared with the second embodiment of the method.
• an eighth embodiment of the method of the present invention provides a signal processing method, including the following steps:
• Step 801 the rate adaptation step, that is, the rate at which the transmitting end acquires the second actual data to be sent and the fixed line rate of the physical layer, according to the rate of the second actual data to be sent and the foregoing The fixed line rate of the layer, determining the length of the data to be filled;
• Step 802 The scrambling code step, that is, the second actual data to be sent by the sending end is scrambled;
• Step 803 the inserting step, that is, the sending end inserts the second padding data of the specified length into the second actual data to be sent after the scrambling code processing, so that the information symbols obtained after inserting the second padding data (including The rate of the actual data to be sent and the second padding data is matched with the fixed line rate of the physical layer; wherein the specified length is the length of the above-mentioned padding data;
• Step 804 the encoding step, that is, the sending end performs error correction coding processing on the data obtained by inserting the second padding data of the specified length;
• Step 805 a modulation step, that is, the transmitting end performs signal modulation on the data obtained by the error correction coding process;
• Step 806 a sending step, that is, the sending end sends the signal obtained by the signal modulation to the receiving end;
• Step 807 a receiving step, that is, the receiving end receives the signal transmitted by the transmitting end and transmitted over the channel;
• Step 808 a demodulation step, that is, the receiving end demodulates the received signal transmitted through the channel to obtain the first data
• Step 809 the detecting step, that is, the receiving end detects the filling position in the first data
• Step 810 the replacing step, that is, the receiving end replaces the first padding data in the filling position in the first data with the second padding Data to obtain second data
• Step 811 the decoding step, that is, the receiving end performs error correction decoding processing on the second data to obtain third data;
• Step 812 The descrambling step, that is, the receiving end performs descrambling processing on the second actual data included in the third data.
• scrambling step and the descrambling step in this embodiment are optional steps.
• This embodiment further specifically describes the filling step and the replacement step as compared with the third embodiment of the method.
• a ninth embodiment of the method of the present invention provides a signal processing method, including the following steps. Step:
• Step 901 The rate adaptation step, that is, the rate at which the transmitting end acquires the second actual data to be sent and the fixed line rate of the physical layer, according to the rate of the second actual data to be sent and the fixed line rate of the physical layer. Determine the length of data that needs to be populated;
• Step 902 the inserting step, that is, the sending end inserts the second padding data of the specified length into the second actual data to be sent, so that the information symbol obtained after inserting the second padding data (including the above-mentioned to be sent)
• the rate of the second actual data and the second padding data is adapted to the fixed line rate of the physical layer; wherein the specified length is the length of the above-mentioned padding data;
• Step 903 The scrambling code step, that is, the sending end performs scrambling processing on the data obtained by inserting the second padding data of the specified length.
• Step 904 the encoding step, that is, the sending end performs error correction coding processing on the data obtained by the scrambling code processing;
• Step 905 a modulation step, that is, the transmitting end performs signal modulation on the data obtained by the error correction coding process;
• Step 906 a sending step, that is, the sending end sends the signal obtained by the above signal modulation to the receiving end;
• Step 907 The receiving step, that is, the receiving end receives the signal transmitted by the transmitting end and transmitted by the channel;
• Step 908 a demodulation step, that is, the receiving end demodulates the received signal transmitted through the channel to obtain the first data
• Step 909 the detecting step, that is, the receiving end detects the filling position in the first data
• Step 910 the replacing step, that is, the receiving end replaces the first padding data in the filling position in the first data with the second padding Data to obtain second data
• Step 911 the decoding step, that is, the receiving end performs error correction decoding processing on the second data to obtain third data;
• Step 912 The descrambling step, that is, the receiving end performs descrambling processing on the third data.
• scrambling step and the descrambling step in this embodiment are optional steps.
• This embodiment further describes the filling step and the replacement step in more detail than the fourth embodiment of the method. Step.
• a tenth embodiment of the method of the present invention provides a signal processing method, including the following steps:
• Step 1001 Rate adaptation step, that is, the rate at which the transmitting end acquires the second actual data to be sent and the fixed line rate of the physical layer, and calculates according to the rate of the second actual data to be sent and the fixed line rate of the physical layer. The length of the data to be filled;
• Step 1002 an insertion step, that is, the sending end inserts second padding data of a specified length into the second actual data to be sent, so that the information symbol obtained after inserting the second padding data (including the above-mentioned to be sent
• the rate of the second actual data and the second padding data is adapted to the fixed line rate of the physical layer;
• the specified length is the length of the above-mentioned padding data;
• Step 1003 an encoding step, that is, the sending end performs error correction coding processing on the data obtained by inserting the second padding data.
• Step 1004 The scrambling code step, that is, the sending end performs scrambling processing on the data obtained by the error correction coding process;
• Step 1005 a modulation step, that is, the sending end performs signal modulation on the data obtained by the scrambling code processing;
• Step 1006 a sending step, that is, the sending end sends the signal obtained by the foregoing signal to the receiving end;
• Step 1007 The receiving step, that is, the receiving end receives the signal transmitted by the transmitting end and transmitted over the channel;
• Step 1008 a demodulation step, that is, the receiving end performs signal demodulation on the signal transmitted through the channel to obtain first data;
• Step 1009 a descrambling step, that is, the receiving end performs descrambling processing on the first data;
• Step 1011 a replacement step, that is, the receiving end replaces the first padding data in the padding position in the data obtained by the descrambling process into the second padding data to obtain the second data;
• Step 1010 The decoding step, that is, the receiving end performs error correction decoding processing on the second data. It should be noted that the scrambling step and the descrambling step in this embodiment are optional steps. This embodiment further describes the filling step and the replacement step in more detail than the fifth embodiment of the method.
• the filling step and the replacing step are further refined as compared with the second to fifth embodiments of the above method, wherein the filling step comprises:
• the rate adaptation step that is, the rate at which the transmitting end acquires the second actual data to be sent and the fixed line rate of the physical layer, and calculates the required padding data according to the rate of the second actual data to be sent and the fixed line rate of the physical layer. length;
• Inserting that is, the sending end inserts the second padding data of the specified length into the second actual data to be sent, so that the information symbol obtained after inserting the second padding data (including the second actual data to be sent and
• the rate of the second padding data is adapted to the fixed line rate of the physical layer; the above specified length is the length of the above-mentioned padding data.
• the replacement steps include:
• a detecting step that is, the receiving end detects a padding position in the data obtained by demodulating the signal
• a replacement step that is, the receiving end replaces the first padding data in the padding position in the data obtained by demodulating the signal by the second padding data to obtain the second data.
• ki represents the second actual data to be transmitted
• i represents data that needs to be filled at the transmitting end (second padding data)
• k represents information symbols (including to be transmitted).
• n represents the data obtained after the error correction coding of the information symbol, that is, the signal (or data) sent by the transmitting end
• n represents the signal received by the receiving end after transmission ( Or data)
• n, -i indicating the first actual data included in the signal (or data) received by the receiving end, i, indicating the data at the filling position in the signal (or data) received by the receiving end (first filling data) ).
• a first embodiment of the transmitting end of the present invention provides a transmitting end, where the transmitting end 1 includes: a filling module 11 for inserting second padding data in the second actual data (ki) to be sent (i) An encoding module 12, configured to perform error correction encoding processing on the data (k) output from the filling module 11;
• the modulation module 13 is configured to perform signal modulation on the data (n) output from the encoding module 12, and the transmitting module 14 is configured to transmit the signal (n) output by the modulation module 13.
• the filling module 11 may include:
• the rate adaptation unit 111 is configured to obtain a rate of the second actual data (ki) to be sent and a fixed line rate of the physical layer, according to a rate of the second actual data (ki) to be sent and a fixed line rate of the physical layer. Determine the length of data that needs to be populated;
• the inserting unit 112 is configured to insert a second padding data (i) of a specified length into the second actual data (ki) to be sent, so that the information symbol obtained after inserting the second padding data (i) (including the to-be-sent The rate of the second actual data (ki) and the second padding data (i) is adapted to the fixed line rate of the physical layer; the specified length is the length of the above-mentioned padding data; the padding position of the second padding data may be Pre-set, either before or after the second actual data, or in the second actual data.
• the transmitting end may include a scrambling module to scramble the signal (data) before the signal is transmitted. , the following is described in detail.
• scrambling code modules in the following embodiments are optional modules.
• a second embodiment of the transmitting end of the present invention provides a transmitting end, where the transmitting end 1 includes: a scrambling code module 15 for performing scrambling processing on a second actual data (ki) to be sent; For inserting the second padding data (i) into the data output by the scrambling code module 15; the encoding module 12 for performing error correction encoding processing on the data (k) output from the padding module 11; The data (n) output from the encoding module 12 is signal-modulated; and the transmitting module 14 is configured to transmit the signal (n) output by the modulation module 13.
• the transmitting end 1 includes: a scrambling code module 15 for performing scrambling processing on a second actual data (ki) to be sent; For inserting the second padding data (i) into the data output by the scrambling code module 15; the encoding module 12 for performing error correction encoding processing on the data (k) output from the padding module 11; The data (n) output from the encoding module 12 is signal-modulated; and the transmit
• the filling module 11 may include:
• the rate adaptation unit 111 is configured to determine a rate of the second actual data (ki) to be sent and a fixed line rate of the physical layer, according to a rate of the second actual data (ki) to be sent and a fixed line rate of the physical layer. The length of data that needs to be filled;
• the inserting unit 112 is configured to insert the second padding data (i) of the specified length into the data (ki) output by the scrambling code module 15 so that the information symbols obtained after inserting the second padding data (i) (including the scrambling code)
• the rate of data (ki) and second padding data (i) output by module 15 is adapted to the fixed line rate of the physical layer; the specified length is the length of the above-mentioned padding data.
• a third embodiment of the transmitting end of the present invention provides a transmitting end, where the transmitting end 1 includes: a filling module 11 for inserting second padding data (i) into the second actual data (ki) to be sent.
• the scrambling code module 15 is configured to perform scrambling processing on the data (k) output by the filling module 11; the encoding module 12 is configured to perform error correction encoding processing on the data (k) output from the scrambling code module 15; And for performing signal modulation on the data (n) output from the encoding module 12; the transmitting module 14 is configured to send the signal (n) output by the modulation module 13.
• the filling module 11 may include:
• the rate adaptation unit 111 is configured to acquire a rate of the second actual data (ki) to be sent and a fixed line rate of the physical layer, according to a rate of the second actual data (ki) to be sent and a fixed line rate of the physical layer. Determine the length of data that needs to be populated;
• the inserting unit 112 is configured to insert a second padding data (i) of a specified length into the second actual data (ki) to be sent, so that the information symbol obtained after inserting the second padding data (i) (including the to-be-sent The rate of the actual data (ki) and the second padding data (i) is adapted to the fixed line rate of the physical layer; the above specified length is the length of the above-mentioned padding data.
• a fourth embodiment of the present invention provides a transmitting end, where the transmitting end 1 includes: a filling module 11 for inserting a padding byte (i) into a second actual data (ki) to be sent;
• the encoding module 12 is configured to perform error correction encoding processing on the data (k) output by the filling module 11;
• the scrambling code module 15 is configured to perform scrambling processing on the data (n) output by the encoding module 12;
• the signal (n) output from the scrambling code module 15 is signal-modulated; and the transmitting module 14 is configured to transmit the signal (n) output by the modulation module 13.
• the filling module 11 may include:
• the rate adaptation unit 111 is configured to obtain a rate of the second actual data (ki) to be sent and a fixed line rate of the physical layer, according to a rate of the second actual data (ki) to be sent and a fixed line rate of the physical layer. Determine the length of data that needs to be populated;
• the inserting unit 112 is configured to insert a second padding data (i) of a specified length into the second actual data (ki) to be sent, so that the information symbol obtained after inserting the second padding data (i) (including the to-be-sent The rate of the actual data (ki) and the second padding data (i) sent is adapted to the fixed line rate of the physical layer; the above specified length is the length of the above-mentioned padding data.
• the transmitting ends of the second to fifth embodiments of the foregoing transmitting end include the scrambling code module 15, which is different in that the scrambling code module 15 has different positions in the processing flow of the signal (or data) at the transmitting end 1, which is common in the art.
• the technician can select one or more of them to implement according to the actual situation.
• the transmitting end may further include an interleaving module to implement interleaving processing on the signal, which is specifically described below.
• a fifth embodiment of the present invention provides a transmitting end, where the transmitting end 1 includes: a filling module 11 for inserting a padding byte (i) into a second actual data (ki) to be sent;
• the encoding module 12 is configured to perform error correction encoding processing on the data (k) output by the filling module 11;
• the interleaving module 16 is configured to perform interleaving processing on the data (n) output by the encoding module 12;
• the modulation module 13 is configured to The data (n) output from the interleaving module 16 is subjected to signal modulation; and the transmitting module 14 is configured to transmit the signal (n) output from the modulation module 13.
• the filling module 11 specifically includes:
• the rate adaptation unit 111 is configured to acquire a rate of the second actual data (ki) to be sent and a fixed line rate of the physical layer, according to a rate of the second actual data (ki) to be sent and a fixed line rate of the physical layer. Determine the length of data that needs to be populated;
• the inserting unit 112 is configured to insert a second padding data (i) of a specified length into the second actual data (ki) to be sent, so that the information symbol obtained after inserting the second padding data (i) (including the to-be-sent The rate of the second actual data (ki) and the second padding data (i) is adapted to the fixed line rate of the physical layer; the specified length is the length of the above-mentioned padding data.
• the location in the processing flow of the signal (or data) of the interleaving module of the transmitting end in the transmitting end is not limited to the sequence described in this embodiment, and the interleaving module may also be located before the filling module or the encoding module.
• the signal (or data) is processed, and those skilled in the art can make appropriate settings according to actual conditions.
• interleaving module in this embodiment is an optional module.
• a first embodiment of the receiving end of the present invention provides a receiving end, and the foregoing transmitting end.
• the receiving end 2 includes:
• the receiving module 21 is configured to receive a signal (n,) transmitted by the transmitting end and transmitted by the channel, where the signal transmitted by the receiving end includes the first actual data (n, -i,), and the first actual The padding position in the data includes the first padding data (i, ); the transmitting end inserts the second padding data (i) in the padding position in the second actual data (ki) before transmitting the signal, and passes through the transmitting end to the receiving end.
• the channel transmission process of the end, the second actual data undergoes a possible change to become the first actual data (n, -i,), and the second padding data (i) undergoes a possible change to become the first padding data (i,);
• the demodulation module 22 is configured to perform signal demodulation on the channel-transmitted signal (n,) received by the receiving module 21;
• a replacement module 23 configured to replace the first padding data (i,) in the padding position in the data (n,) output from the demodulation module 22 with the second padding data (i); since the second padding data (i) In the transmission process, due to signal interference or other reasons, the first padding data (i,) received by the receiving end may not coincide with the second padding data (i) filled by the transmitting end, so the second padding data is used before decoding. (i) replacing the first padding data (i,) to correct errors that may occur during channel transmission;
• the decoding module 24 is configured to perform error correction decoding processing on the data (n, -i, i) output from the replacement module 23, thereby obtaining the required second actual data (k-i). Since the replacement module 23 replaces the first padding data (i, ) with the second padding data (i) before the error correction decoding by the decoding module 24, the decoding module can concentrate the error correction decoding capability on the useful actual data (only It is necessary to perform error correction decoding on the first actual data (n, -i,) to improve the effective coding gain.
• the replacement module 23 may include:
• a detecting unit 231 configured to detect a filling position in the data (n,) output from the demodulation module 22;
• the replacing unit 232 is configured to replace the first padding data (i,) at the padding position in the data (n,) output from the demodulation module 22 described above with the second padding data (i).
• the receiving module 21 receives the signal (n,) transmitted by the transmitting end and transmits the signal, and the demodulation module 21 demodulates the received signal, and then the detecting unit 231 detects the filling in the signal (data).
• the error correction decoding is performed to obtain the actual data (ki). Since the second padding data (i) is the padding data inserted by the transmitting end in the second actual data, the decoding module 24 does not need to correct the error correction decoding process. Wrong, the ability to decode error correction can be concentrated on the useful first actual data (n, -i,), thereby increasing the effective coding gain.
• the receiving end may include a descrambling module to descramble the received signal (data), which will be specifically described in the following embodiments.
• the descrambling module in the following embodiments is an optional module.
• a second embodiment of the receiving end of the present invention provides a receiving end, which corresponds to the transmitting end provided in the foregoing second embodiment, and the receiving end 2 includes:
• the receiving module 21 is configured to receive a signal ( ⁇ ') transmitted by the transmitting end and transmitted through the channel;
• the demodulation module 22 is configured to perform signal demodulation on the channel-transmitted signal (n,) received by the receiving module 21;
• a replacement module 23 configured to replace the first padding data (i,) in the padding position in the data (n,) output from the demodulation module 22 with the second padding data (i);
• a decoding module 24 configured to perform error correction decoding processing on the data (n'-i', i) output from the replacement module 23;
• the descrambling module 25 is configured to descramble the second actual data (k-i) included in the data output by the decoding module 24, thereby obtaining the original second actual data (k-i). It should be noted that, since the scrambling module 15 of the transmitting end 2 only scrambles the second actual data, the descrambling module 25 only needs to perform descrambling processing on the second actual data.
• the replacement module 23 may include:
• a detecting unit 231 configured to detect a filling position in the data (n,) output from the demodulation module 22, and a replacement unit 232 for filling the filling position in the data (n,) output from the demodulation module 22
• the first padding data (i,) is replaced with the second padding data (i).
• a third embodiment of the receiving end of the present invention provides a receiving end corresponding to the transmitting end provided in the third embodiment.
• the receiving end 2 includes:
• the receiving module 21 is configured to receive a signal ( ⁇ ') transmitted by the transmitting end 2 and transmitted through the channel;
• the demodulation module 22 is configured to send a signal ( ⁇ ,) transmitted through the channel received by the receiving module 21 Demodulation
• a replacement module 23 configured to replace the first padding data (i,) in the padding position in the data (n,) output from the demodulation module 22 with the second padding data (i);
• the decoding module 24 is configured to perform error correction decoding processing on the data (n, -i, i) output from the replacement module 23;
• the descrambling module 25 is configured to perform descrambling processing on the data (k-i, i) output from the decoding module 24, thereby obtaining the required second actual data (k-i).
• the replacement module 23 may include:
• a detecting unit 231 configured to detect a filling position in the data (n,) output from the demodulation module 22
• a replacement unit 232 configured to fill the filling position in the data (n,) output from the demodulation module 22
• the first padding data (i,) is replaced with the second padding data (i).
• a fourth embodiment of the receiving end of the present invention provides a receiving end, which corresponds to the transmitting end provided in the fourth embodiment, and the receiving end 2 includes:
• the receiving module 21 is configured to receive a signal ( ⁇ ') transmitted by the transmitting end and transmitted through the channel;
• the demodulation module 22 is configured to perform signal demodulation on the channel-transmitted signal (n,) received by the receiving module 21;
• the descrambling module 25 is configured to perform descrambling processing on the data (n,) output by the demodulation module 22; and the replacement module 23 is configured to fill the first position in the data (n,) output from the descrambling module 25 Fill data (i,) is replaced with second fill data (i);
• the decoding module 24 is configured to perform error correction decoding processing on the data (n, -i, i) output by the replacement module 23 to obtain the required second actual data (k-i).
• the replacement module 23 may include:
• a detecting unit 231 configured to detect a filling position in the data (n,) output from the descrambling module 25; a replacing unit 232, configured to fill the filling position in the data (n,) output from the descrambling module 25
• the first padding (i,) section is replaced with the second padding data (i).
• the receiving end 2 includes an interference module 25, wherein the descrambling module 25 corresponds to the scrambling module in the transmitting end, and the descrambling module 25 pairs the signal at the receiving end 2 (or The location in the processing flow of the data) is also different, and those skilled in the art can select according to the actual situation. Choose one or more of them to implement.
• the receiving end may also include a deinterleaving module, which will be specifically described below.
• a fifth embodiment of the receiving end of the present invention provides a receiving end, which corresponds to the sending end provided in the fifth embodiment of the transmitting end, and the receiving end 2 includes:
• the receiving module 21 is configured to receive a signal ( ⁇ ') transmitted by the transmitting end and transmitted through the channel;
• the demodulation module 22 is configured to perform signal demodulation on the channel-transmitted signal (n,) received by the receiving module 21;
• the deinterleaving module 26 is configured to perform deinterleave processing on the data (n,) output by the demodulation module 22; and the replacement module 23 is configured to fill the first position in the data (n,) output from the deinterleave module 26 Fill data (i,) is replaced with second fill data (i);
• the decoding module 24 is configured to perform error correction decoding processing on the data (n, -i, i) output by the replacement module 23 to obtain the required second actual data (k-i).
• the replacement module 23 may include:
• a detecting unit 231 configured to detect a filling position in the data (n,) output from the deinterleave module 26; a replacing unit 232, configured to: at the filling position in the data (n,) output from the deinterleave module 26
• the first padding (i,) section is replaced with the second padding data (i).
• the deinterleaving module of the receiving end is not limited to the sequence described in this embodiment, and the interleaving module of the transmitting end may also be located before the filling module or the encoding module, and the deinterleaving module may also be located in the replacement module or The signal (or data) is processed after the decoding module, and those skilled in the art can make appropriate settings according to actual conditions.
• deinterleaving module in this embodiment is an optional module.
• the second padding data is 00 16 or 7E 16
• the error correction encoding/decoding method adopts RS (256, 252)
• the modulation/demodulation mode adopts OFDM
• the actual data to be transmitted per unit time is 149 words.
• the capacity of the physical layer in the unit time is 252 bytes, which is composed of the transmitting end and the receiving end respectively provided by the fourth embodiment of the transmitting end and the fourth embodiment of the receiving end respectively.
• the signal processing system performs processing, and the specific processing flow is as follows:
• Step Sl the rate adaptation unit 111 determines the length of the data to be filled according to the fixed line rate (252) of the physical layer and the data amount (149) of the second actual data (103);
• Step S2 the inserting unit 112 inserts 103 bytes of padding bytes 00 16 or 7E 16 (ie, second padding data) in the second actual data;
• Step S3 the second padding data and the second actual data are used together as an information symbol, and the encoding module 12 performs RS (256, 252) encoding;
• Step S4 The scrambling code module 15 performs scrambling processing on the data output by the encoding module 12;
• Step S5 The modulation module 13 performs OFDM modulation on the data output by the scrambling code module 15;
• Step S6 the sending module 14 sends the OFDM modulated signal to the receiving end 2;
• Step S7 The receiving module 21 receives the signal sent by the transmitting end 1, and the signal is received by the receiving end after being transmitted through the channel;
• Step S8 The demodulation module 22 performs OFDM demodulation on the signal received by the receiving module 21;
• Step S9 The descrambling module 25 performs descrambling processing on the data output by the demodulation module 22;
• Step S10 The detecting unit 231 detects the filling position in the data outputted by the descrambling module 25; Step S11, the replacing unit 232 replaces the first filling data that may be in error at the filling position with the completely reliable one according to the detection result of the detecting unit 231.
• Two padding data (00 16 or 7 6 bytes;);
• Step S12 The decoding module 24 performs RS (256, 252) decoding processing on the replaced second padding data together with the first actual data, so that the original second actual data (149 bytes) can be obtained.
• the second padding data is a duplicate byte identifying the padding position
• the error correction encoding/decoding method adopts RS (256, 252)
• the modulation/demodulation mode adopts OFDMA
• the actual data (second actual data) to be transmitted per unit time is 149 bytes
• the load carrying capacity of the physical layer per unit time is 252 bytes, which is composed of the transmitting end and the receiving end respectively provided by the second embodiment of the transmitting end and the second embodiment of the receiving end respectively.
• Step Sl the rate adaptation unit 111 determines the length of the data to be filled according to the fixed line rate (252) of the physical layer and the data amount (149) of the second actual data (103);
• Step S2 the scrambling code module 15 performs scrambling processing on the second actual data;
• Step S3 the inserting unit 112 inserts 103 bytes of the repeated bytes of the identifier filling position (ie, the second padding data) in the second actual data after the scrambling process;
• Step S4 the second padding data and the second actual data are used together as an information symbol, and the encoding module 12 performs RS (256, 252) encoding;
• Step S5 the modulation module 13 performs the OFDMA modulation on the data output by the encoding module 12;
• Step S6 the transmitting module 14 sends the signal obtained by the OFDMA modulation to the receiving end 2;
• Step S7 The receiving module 21 receives the signal sent by the transmitting end 1, and the signal is received by the receiving end after being transmitted through the channel;
• Step S8 The demodulation module 22 performs OFDMA demodulation on the signal received by the receiving module 21;
• Step S10 the replacement unit 232 replaces the first padding data that may be in error at the padding position with the second padding data that is completely reliable according to the detection result of the detecting unit 231;
• Step S11 The decoding module 24 performs RS (256, 252) decoding processing on the replaced second padding data together with the first actual data, so that the second uncongested second actual data (149 bytes) can be obtained.
• Step S12 The descrambling module 25 descrambles the undescrambled second actual data (149 bytes) output by the decoding module 24 to obtain the original second actual data (149 bytes).
• an embodiment of the present invention further provides a signal processing system, including a transmitting end 1 and a receiving end 2, where
• the transmitting end 1 is configured to insert the second padding data into the second actual data to be sent; the sending end 1 is further configured to perform error correction coding processing on the data obtained by inserting the second padding data;
• the transmitting end 1 is further configured to perform signal modulation on the data obtained by the above error correction coding process; the transmitting end 1 is further configured to send the signal obtained by modulating the signal to the receiving end 2;
• the receiving end 2 is configured to receive a signal transmitted by the transmitting end 1 and transmitted by the channel, where the signal transmitted through the channel includes the first actual data and the first padding data; wherein the first actual data is sent by the sending end
• the actual data is generated after the channel transmission process is changed, and the first padding data is the second padding data inserted by the transmitting end into the second actual data in the channel transmission. Generated after a change in the process of transmission;
• the receiving end 2 is further configured to perform signal demodulation on the signal transmitted through the channel to obtain the first data
• the receiving end 2 is further configured to replace the first padding data on the padding position in the first data with the second padding data to obtain second data;
• the receiving end 2 is further configured to perform error correction decoding processing on the second data.
• the sending end 1 and the receiving end 2 can perform signal processing in the manner of all the above embodiments, and the specific process is not described herein.
• the program may be stored in a computer readable storage medium, and the storage medium may include: Flash disk, read-only memory (ROM), random access memory (RAM), disk or optical disk.

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