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WO2003039049A9 - ダイレクトコンバージョン受信機 - Google Patents

ダイレクトコンバージョン受信機 Download PDF

Info

Publication number
WO2003039049A9
WO2003039049A9 PCT/JP2002/011119 JP0211119W WO03039049A9 WO 2003039049 A9 WO2003039049 A9 WO 2003039049A9 JP 0211119 W JP0211119 W JP 0211119W WO 03039049 A9 WO03039049 A9 WO 03039049A9
Authority
WO
WIPO (PCT)
Prior art keywords
frequency
converting
signal
direct conversion
conversion receiver
Prior art date
Application number
PCT/JP2002/011119
Other languages
English (en)
French (fr)
Other versions
WO2003039049A1 (en
Inventor
湯浅正俊
達夫 平松
花房清夫
Original Assignee
三洋電機株式会社
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
Priority claimed from JP2001332911A external-priority patent/JP3685750B2/ja
Priority claimed from JP2001332912A external-priority patent/JP3696147B2/ja
Priority claimed from JP2001332910A external-priority patent/JP2003143101A/ja
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to EP02777966A priority Critical patent/EP1441457A4/en
Priority to US10/491,625 priority patent/US20040240573A1/en
Publication of WO2003039049A1 publication Critical patent/WO2003039049A1/ja
Publication of WO2003039049A9 publication Critical patent/WO2003039049A9/ja

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
    • H04B1/0032—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage with analogue quadrature frequency conversion to and from the baseband
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

OFDM方式で変調されたアナログRF信号を、受信対象セグメントの占有周波数の中心周波数が周波数零となるように周波数変換するダウンコンバータ、ダウンコンバータによって得られたダウンコンバート信号をデジタル信号に変換するAD変換手段、AD変換手段によって得られた信号に対して、高速フーリエ変換を施して、時間軸を周波数軸に変換するFFT手段、およびFFT手段の出力信号から、受信対象セグメント以外の不要成分を除去する不要成分除去手段を備えている。
PCT/JP2002/011119 2001-10-30 2002-10-25 Direct conversion receiver WO2003039049A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP02777966A EP1441457A4 (en) 2001-10-30 2002-10-25 DIRECT CONVERSION RECEIVER
US10/491,625 US20040240573A1 (en) 2001-10-30 2002-10-25 Direct coversion receiver

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2001/332912 2001-10-30
JP2001332911A JP3685750B2 (ja) 2001-10-30 2001-10-30 Ｏｆｄｍ復調機
JP2001/332911 2001-10-30
JP2001332912A JP3696147B2 (ja) 2001-10-30 2001-10-30 ダイレクトコンバージョン受信機
JP2001/332910 2001-10-30
JP2001332910A JP2003143101A (ja) 2001-10-30 2001-10-30 ダイレクトコンバージョン受信機

Publications (2)

Publication Number Publication Date
WO2003039049A1 WO2003039049A1 (en) 2003-05-08
WO2003039049A9 true WO2003039049A9 (ja) 2010-10-14

Family

ID=27347754

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/011119 WO2003039049A1 (en) 2001-10-30 2002-10-25 Direct conversion receiver

Country Status (4)

Country Link
US (1) US20040240573A1 (ja)
EP (1) EP1441457A4 (ja)
CN (1) CN100550702C (ja)
WO (1) WO2003039049A1 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7215266B2 (en) * 2004-05-21 2007-05-08 Wionics Research Hybrid DC offset cancellation scheme for wireless receiver
JP2010213107A (ja) * 2009-03-11 2010-09-24 Fujitsu Semiconductor Ltd 通信装置
JP5630648B2 (ja) * 2010-11-16 2014-11-26 ソニー株式会社 受信装置、受信方法、及び、電子機器
US9183838B2 (en) * 2013-10-09 2015-11-10 Summit Semiconductor Llc Digital audio transmitter and receiver
JP2020025400A (ja) * 2018-08-07 2020-02-13 株式会社東芝 無線送電装置及び無線送電方法
US12255671B2 (en) * 2023-03-16 2025-03-18 International Business Machines Corporation Separable, intelligible, single channel voice communication

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06326739A (ja) * 1993-05-11 1994-11-25 Sharp Corp Ｃｏｆｄｍ信号受信機
US5761190A (en) * 1995-02-20 1998-06-02 Pioneer Electronic Corporation OFDM broadcast wave receiver
JPH1117644A (ja) * 1997-06-27 1999-01-22 Toshiba Corp 無線基地局、無線端末、無線通信システムおよびそのキャリア割り当て制御方法
US7106689B1 (en) * 1999-03-02 2006-09-12 Matsushita Electric Industrial Co., Ltd. OFDM transmission/reception apparatus
JP4284568B2 (ja) * 1999-03-18 2009-06-24 ソニー株式会社 受信装置および方法、並びに記録媒体
JP2001069112A (ja) * 1999-08-25 2001-03-16 Sony Corp Ｏｆｄｍ送信装置、ｏｆｄｍ受信装置およびこれらを用いたｏｆｄｍ通信装置、ならびに、ｏｆｄｍ通信方法
JP3799951B2 (ja) * 2000-04-13 2006-07-19 ソニー株式会社 Ｏｆｄｍ送信装置及び方法
US20030072393A1 (en) * 2001-08-02 2003-04-17 Jian Gu Quadrature transceiver substantially free of adverse circuitry mismatch effects
GB0123290D0 (en) * 2001-09-27 2001-11-21 Nokia Corp DC offset correction in a mobile communication system
US20030231726A1 (en) * 2002-06-12 2003-12-18 Andreas Schuchert Arrangement and method for frequency domain compensation of OFDM signals with IQ imbalance
US7110734B2 (en) * 2002-09-05 2006-09-19 Maxim Integrated Products Inc. DC offset cancellation in a zero if receiver

Also Published As

Publication number Publication date
EP1441457A4 (en) 2010-10-20
CN1537370A (zh) 2004-10-13
CN100550702C (zh) 2009-10-14
WO2003039049A1 (en) 2003-05-08
US20040240573A1 (en) 2004-12-02
EP1441457A1 (en) 2004-07-28

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