WO2008105457A1 - 信号処理方法、信号処理装置、無線受信装置及び通信用受信装置 - Google Patents

信号処理方法、信号処理装置、無線受信装置及び通信用受信装置 Download PDF

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Publication number
WO2008105457A1
WO2008105457A1 PCT/JP2008/053406 JP2008053406W WO2008105457A1 WO 2008105457 A1 WO2008105457 A1 WO 2008105457A1 JP 2008053406 W JP2008053406 W JP 2008053406W WO 2008105457 A1 WO2008105457 A1 WO 2008105457A1
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WO
WIPO (PCT)
Prior art keywords
carrier
signal processing
reception device
sampling
frequency
Prior art date
Application number
PCT/JP2008/053406
Other languages
English (en)
French (fr)
Inventor
Masahiro Muraguchi
Mitsutoshi Kijima
Yudai Inada
Kohei Suzaki
Original Assignee
Tokyo University Of Science Educational Foundation Administrative Organization
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 Tokyo University Of Science Educational Foundation Administrative Organization filed Critical Tokyo University Of Science Educational Foundation Administrative Organization
Priority to EP08712028A priority Critical patent/EP2124407A1/en
Priority to JP2009501272A priority patent/JPWO2008105457A1/ja
Priority to US12/449,788 priority patent/US20100040175A1/en
Publication of WO2008105457A1 publication Critical patent/WO2008105457A1/ja

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3818—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers
    • 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
    • H04B1/0007—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 radiofrequency or intermediate frequency stage
    • H04B1/0025—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 radiofrequency or intermediate frequency stage using a sampling rate lower than twice the highest frequency component of the sampled signal

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

　搬送波を搬送波の周波数より低い周波数でサンプリングしてもベクトル情報が失われず、ベクトル多値変調信号が復調でき、理想的なソフトウェア受信装置が実現する。 　搬送波の周波数より低いサンプリング周波数で搬送波をサンプリングしたことにより生じるエイリアスの信号のサンプリング点の位相関係と、搬送波のサンプリング点の位相関係とが一致するように、サンプリング周波数を設定する。すなわち、搬送波周波数をｆｃ、サンプリング周波数をｆｓ、正の整数をｋとしたとき、搬送波周波数ｆｃとサンプリング周波数ｆｓとの関係が、ｆｓ＝４ｆｃ／（４ｋ＋１）を満たすように、サンプリング周波数を設定する。ベクトル情報を保ったまま、搬送波をダウンサンプリングでき、ＱＰＳＫや６４ＱＡＭのようなベクトル多値変調の復調が行える。
PCT/JP2008/053406 2007-02-27 2008-02-27 信号処理方法、信号処理装置、無線受信装置及び通信用受信装置 WO2008105457A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08712028A EP2124407A1 (en) 2007-02-27 2008-02-27 Signal processing method, signal processing device, radio reception device, and communication reception device
JP2009501272A JPWO2008105457A1 (ja) 2007-02-27 2008-02-27 信号処理方法、信号処理装置、無線受信装置及び通信用受信装置
US12/449,788 US20100040175A1 (en) 2007-02-27 2008-02-27 Signal processing method, signal processing device, wireless reception device, and communication reception device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-046839 2007-02-27
JP2007046839 2007-02-27

Publications (1)

Publication Number Publication Date
WO2008105457A1 true WO2008105457A1 (ja) 2008-09-04

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PCT/JP2008/053406 WO2008105457A1 (ja) 2007-02-27 2008-02-27 信号処理方法、信号処理装置、無線受信装置及び通信用受信装置

Country Status (4)

Country Link
US (1) US20100040175A1 (ja)
EP (1) EP2124407A1 (ja)
JP (1) JPWO2008105457A1 (ja)
WO (1) WO2008105457A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017011320A (ja) * 2015-06-16 2017-01-12 住友電気工業株式会社 復調装置、直交変調信号の復調方法及び無線通信装置
KR101831198B1 (ko) * 2016-04-14 2018-02-22 국방과학연구소 통신 신호에 대한 감소된 연산량을 가지는 2-단계 tdoa/fdoa 정보 추정 방법
JP2018528728A (ja) * 2015-07-08 2018-09-27 センザンナ・インコーポレイテッド 干渉を受けない無線

Families Citing this family (7)

* Cited by examiner, † Cited by third party
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US7936192B2 (en) * 2008-05-16 2011-05-03 Van Den Berg Leendert Jan Alias-locked loop frequency synthesizer using a regenerative sampling latch
US9037104B2 (en) 2013-02-04 2015-05-19 Qualcomm, Incorporated Receiver that reconfigures between zero intermediate frequency and direct sampling based on channel conditions
EP2882106A1 (en) * 2013-12-06 2015-06-10 Nxp B.V. Sigma-delta modulator
US9356769B2 (en) 2014-09-24 2016-05-31 Qualcomm Incorporated Synchronous reset and phase detecting for interchain local oscillator (LO) divider phase alignment
US9356768B2 (en) 2014-09-24 2016-05-31 Qualcomm Incorporated Phase detecting circuit for interchain local oscillator (LO) divider phase alignment
CN109495181B (zh) * 2018-12-07 2021-09-10 青岛海信宽带多媒体技术有限公司 光模块信号处理方法、装置及光模块
CN113238245B (zh) * 2021-04-20 2023-04-07 中国科学院微电子研究所 提升鉴相精度的欠采样频率选取方法

Citations (5)

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JP2000032071A (ja) * 1998-07-08 2000-01-28 Matsushita Electric Ind Co Ltd 受信装置及び受信信号サンプリング方法
JP2001045081A (ja) * 1999-07-26 2001-02-16 Furuno Electric Co Ltd 信号処理方法
JP2002111762A (ja) * 2000-09-26 2002-04-12 Sony Corp デジタル直交変調信号の復調装置及び方法
JP2002232498A (ja) * 2001-02-06 2002-08-16 Sharp Corp 半導体集積回路
JP2007513562A (ja) * 2003-12-05 2007-05-24 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ バンドパスサンプリング受信器及びサンプリング方法

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US20070140382A1 (en) * 2003-12-05 2007-06-21 Koninklijke Philips Electronics N.V. Bandpass sampling receiver and the sampling method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000032071A (ja) * 1998-07-08 2000-01-28 Matsushita Electric Ind Co Ltd 受信装置及び受信信号サンプリング方法
JP2001045081A (ja) * 1999-07-26 2001-02-16 Furuno Electric Co Ltd 信号処理方法
JP2002111762A (ja) * 2000-09-26 2002-04-12 Sony Corp デジタル直交変調信号の復調装置及び方法
JP2002232498A (ja) * 2001-02-06 2002-08-16 Sharp Corp 半導体集積回路
JP2007513562A (ja) * 2003-12-05 2007-05-24 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ バンドパスサンプリング受信器及びサンプリング方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017011320A (ja) * 2015-06-16 2017-01-12 住友電気工業株式会社 復調装置、直交変調信号の復調方法及び無線通信装置
JP2018528728A (ja) * 2015-07-08 2018-09-27 センザンナ・インコーポレイテッド 干渉を受けない無線
KR101831198B1 (ko) * 2016-04-14 2018-02-22 국방과학연구소 통신 신호에 대한 감소된 연산량을 가지는 2-단계 tdoa/fdoa 정보 추정 방법

Also Published As

Publication number Publication date
US20100040175A1 (en) 2010-02-18
EP2124407A1 (en) 2009-11-25
JPWO2008105457A1 (ja) 2010-06-03

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