[go: up one dir, main page]

WO1997013378A3 - Apparatus and method for determining and using channel state information - Google Patents

Apparatus and method for determining and using channel state information Download PDF

Info

Publication number
WO1997013378A3
WO1997013378A3 PCT/IL1996/000120 IL9600120W WO9713378A3 WO 1997013378 A3 WO1997013378 A3 WO 1997013378A3 IL 9600120 W IL9600120 W IL 9600120W WO 9713378 A3 WO9713378 A3 WO 9713378A3
Authority
WO
WIPO (PCT)
Prior art keywords
channel state
determining
state information
received signals
disclosed
Prior art date
Application number
PCT/IL1996/000120
Other languages
French (fr)
Other versions
WO1997013378A2 (en
Inventor
Giora Silbershatz
Mordechai Ritz
Valentin Lupu
Amit Priebatch
Yehuda Aizenkot
Ran Gozali
Original Assignee
Geotek Communications Inc
Powerspectrum Technology Ltd
Giora Silbershatz
Mordechai Ritz
Valentin Lupu
Amit Priebatch
Yehuda Aizenkot
Ran Gozali
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geotek Communications Inc, Powerspectrum Technology Ltd, Giora Silbershatz, Mordechai Ritz, Valentin Lupu, Amit Priebatch, Yehuda Aizenkot, Ran Gozali filed Critical Geotek Communications Inc
Priority to AU69994/96A priority Critical patent/AU6999496A/en
Publication of WO1997013378A2 publication Critical patent/WO1997013378A2/en
Publication of WO1997013378A3 publication Critical patent/WO1997013378A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • 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
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Apparatus and method for calculating the channel state associated with received signals are disclosed. The channel state is determined from the received signal by analyzing the received signals. Also, apparatus and method for performing erasures of the received signals and for selecting between diversity communication signals based on the channel state are disclosed.
PCT/IL1996/000120 1995-10-01 1996-10-01 Apparatus and method for determining and using channel state information WO1997013378A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU69994/96A AU6999496A (en) 1995-10-01 1996-10-01 Apparatus and method for determining and using channel state information

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL11547695A IL115476A0 (en) 1995-10-01 1995-10-01 Apparatus and method for determining and using channel state information
IL115476 1995-10-01

Publications (2)

Publication Number Publication Date
WO1997013378A2 WO1997013378A2 (en) 1997-04-10
WO1997013378A3 true WO1997013378A3 (en) 1997-06-05

Family

ID=11068038

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL1996/000120 WO1997013378A2 (en) 1995-10-01 1996-10-01 Apparatus and method for determining and using channel state information

Country Status (4)

Country Link
AU (1) AU6999496A (en)
CA (1) CA2233723A1 (en)
IL (1) IL115476A0 (en)
WO (1) WO1997013378A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5989289A (en) 1995-10-16 1999-11-23 Sdgi Holdings, Inc. Bone grafts
WO1998017209A2 (en) 1996-10-23 1998-04-30 Sdgi Holdings, Inc. Spinal spacer
US6033438A (en) 1997-06-03 2000-03-07 Sdgi Holdings, Inc. Open intervertebral spacer
GB9821385D0 (en) * 1998-10-01 1998-11-25 British Broadcasting Corp Improvements relating to measuring channel state from a received signal and discriminating digital values from a received signal,suitable for use in cofdm
US6174311B1 (en) 1998-10-28 2001-01-16 Sdgi Holdings, Inc. Interbody fusion grafts and instrumentation
GB2355164B (en) * 1999-10-07 2004-06-09 Oak Technology Inc Demodulator circuit
US7106810B2 (en) 1999-10-07 2006-09-12 Matthew James Collins Method and apparatus for a demodulator circuit
GB0110907D0 (en) 2001-05-03 2001-06-27 British Broadcasting Corp Improvements in decoders for many carrier signals, in particular in DVB-T recievers
WO2003009489A1 (en) * 2001-07-13 2003-01-30 Kawasaki Microelectronics, Inc. Cdma reception apparatus and cdma reception method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5203024A (en) * 1990-04-27 1993-04-13 Nippon Telegraph & Telephone Corp. Antenna selection diversity reception system
US5214675A (en) * 1991-07-02 1993-05-25 Motorola, Inc. System and method for calculating channel gain and noise variance of a communication channel
US5351274A (en) * 1993-08-20 1994-09-27 General Electric Company Post detection selection combining diversity receivers for mobile and indoor radio channels
US5530926A (en) * 1993-10-04 1996-06-25 Motorola, Inc. Method for operating a switched diversity RF receiver

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5203024A (en) * 1990-04-27 1993-04-13 Nippon Telegraph & Telephone Corp. Antenna selection diversity reception system
US5214675A (en) * 1991-07-02 1993-05-25 Motorola, Inc. System and method for calculating channel gain and noise variance of a communication channel
US5351274A (en) * 1993-08-20 1994-09-27 General Electric Company Post detection selection combining diversity receivers for mobile and indoor radio channels
US5530926A (en) * 1993-10-04 1996-06-25 Motorola, Inc. Method for operating a switched diversity RF receiver

Also Published As

Publication number Publication date
WO1997013378A2 (en) 1997-04-10
CA2233723A1 (en) 1997-04-10
AU6999496A (en) 1997-04-28
IL115476A0 (en) 1996-05-14

Similar Documents

Publication Publication Date Title
AU3654795A (en) Signal detection in a tdma system
AU6909094A (en) A method and apparatus for determining signal usability
CA2206251A1 (en) Method and apparatus for testing a digital communication channel at variable or fixed data rates
EP0813313A3 (en) Mobile communication receiving apparatus
MY125280A (en) Systems and methods for selecting an appropriate detection technique in a radiocommunication system
EP0730381A3 (en) Upstream communications for interactive networks
AU1873899A (en) A method for improved channel impulse response estimation in tdma systems
EP1223780A3 (en) Method and apparatus for providing high speed data communication in a cellular environment
WO2000011817A3 (en) Method for transmitting information and suitable system therefor
WO1998052374A3 (en) Estimating subscriber terminal speed, selecting cell, and radio system
EP0794631A3 (en) Error control method and apparatus for wireless data communication
AU7339000A (en) A system, method, and article of manufacture for detecting emotion in voice signals through analysis of a plurality of voice signal parameters
CA2224684A1 (en) Method and apparatus for determining signal strength in a spread spectrum communication system having a variable data rate
AU5446394A (en) Bidirectional demodulation method and apparatus
AU7570294A (en) Method and apparatus for transmitting, receiving and communicating data signals with corresponding program data signals
NO993895L (en) Method and apparatus for directional radio communication
DE69938194D1 (en) An improved receiver comprising a broadband digitizer
CA2171719A1 (en) Methods and apparatus for detecting cellular digital packet data (cdpd)
EP1708401A3 (en) Transmission method with frequency and time spread at transmitter level
WO1996001544A3 (en) A reception method, and a receiver
MY133639A (en) Method and system for non-orthogonal noise energy based gain control
BR9908568B1 (en) communications system, method of communicating a video signal and method of establishing a communications system.
AU2967297A (en) Method and apparatus for distance measurement
WO1998035450A3 (en) An information coding method and devices utilizing error correction and error detection
WO1997013378A3 (en) Apparatus and method for determining and using channel state information

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG

AK Designated states

Kind code of ref document: A3

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 2233723

Country of ref document: CA

Ref country code: CA

Ref document number: 2233723

Kind code of ref document: A

Format of ref document f/p: F

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase