BR9915418A - Método de recepção cdma e receptor cdma - Google Patents

Método de recepção cdma e receptor cdma

Info

Publication number
BR9915418A
BR9915418A BR9915418A BR9915418A BR9915418A BR 9915418 A BR9915418 A BR 9915418A BR 9915418 A BR9915418 A BR 9915418A BR 9915418 A BR9915418 A BR 9915418A BR 9915418 A BR9915418 A BR 9915418A
Authority
BR
Brazil
Prior art keywords
cdma
correlation values
reception
reception method
receiver
Prior art date
Application number
BR9915418A
Other languages
English (en)
Inventor
Tetsuya Miura
Original Assignee
Nec Corp
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 Nec Corp filed Critical Nec Corp
Publication of BR9915418A publication Critical patent/BR9915418A/pt

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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7113—Determination of path profile
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/709—Correlator structure
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Noise Elimination (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

"MéTODO DE RECEPçãO CDMA E RECEPTOR CDMA", em que uma pluralidade de diferentes quantidades de atraso de recepção de referência são pré-ajustadas com base em um perfil de correlação obtido por recolher um sinal de recepção. Uma pluralidade de valores de correlação são obtidos com base em pelo menos cada uma das quantidades de atraso de recepção de referência pré-ajustadas. Uma pluralidade de níveis de onda de interferência são medidos com base nos valores de correlação obtidos. Qual dos sinais de detecção, obtidos a partir dos respectivos valores de correlação, está sintetizado, é determinado com base nas qualidades de recepção obtidas a partir dos valores de correlação correspondentes com os níveis de onda de interferência medidos. Os sinais de detecção autorizados são sintetizados, e o sinal sintético é decodificado. Um receptor CDMA também é divulgado.
BR9915418A 1998-08-24 1999-08-24 Método de recepção cdma e receptor cdma BR9915418A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23691398A JP2991196B1 (ja) 1998-08-24 1998-08-24 Ｃｄｍａ受信方法および受信機

Publications (1)

Publication Number Publication Date
BR9915418A true BR9915418A (pt) 2001-07-31

Family

ID=17007618

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9915418A BR9915418A (pt) 1998-08-24 1999-08-24 Método de recepção cdma e receptor cdma

Country Status (7)

Country Link
US (1) US6628700B1 (pt)
EP (1) EP0982871B1 (pt)
JP (1) JP2991196B1 (pt)
KR (1) KR100331907B1 (pt)
CN (1) CN1277420C (pt)
BR (1) BR9915418A (pt)
DE (1) DE69929379T2 (pt)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3251261B2 (ja) 1999-04-21 2002-01-28 エヌイーシーモバイリング株式会社 Ｃｄｍａ受信装置
JP3367475B2 (ja) * 1999-07-06 2003-01-14 日本電気株式会社 無線通信機および無線通信機の消費電力制御方法
FI19992694A (fi) * 1999-12-15 2001-06-16 Nokia Networks Oy Menetelmä hajaspektrisignaalin vastaanottamiseksi ja vastaanotin
KR100349648B1 (ko) * 1999-12-27 2002-08-22 주식회사 큐리텔 무선통신 시스템에서의 결정변수 계산장치
JP4316759B2 (ja) * 2000-01-13 2009-08-19 株式会社日立国際電気 パス認定方法、ｃｄｍａ方式無線通信端末およびｃｄｍａ方式無線通信システム
US6795423B1 (en) * 2000-02-04 2004-09-21 Interdigital Technology Corporation System for continuous wave rejection
JP3418981B2 (ja) * 2000-02-16 2003-06-23 日本電気株式会社 スペクトラム拡散通信同期捕捉回路
JP3413833B2 (ja) 2000-05-18 2003-06-09 日本電気株式会社 アクセス制御方法と基地局装置
EP1300973B1 (en) * 2000-07-11 2006-01-25 Fujitsu Limited Code division multiplex signal receiving device
US7085310B2 (en) * 2001-01-29 2006-08-01 Qualcomm, Incorporated Method and apparatus for managing finger resources in a communication system
JP3714406B2 (ja) * 2001-04-27 2005-11-09 日本電気株式会社 Ｗ−ｃｄｍａ方式を用いた送信電力制御回路
JP3580273B2 (ja) 2001-07-24 2004-10-20 日本電気株式会社 Ｓｉｒ測定システムと装置及び方法
JP3588087B2 (ja) * 2002-04-19 2004-11-10 松下電器産業株式会社 Ｓｉｒ測定装置および方法
US7573934B2 (en) * 2002-09-13 2009-08-11 Fujitsu Limited Spread spectrum rake receiver
SG108874A1 (en) * 2002-09-17 2005-02-28 Sony Corp Channel equalisation
JP4123364B2 (ja) 2003-02-07 2008-07-23 日本電気株式会社 Ｃｄｍａ受信装置
US7349461B2 (en) * 2003-02-13 2008-03-25 Qualcomm Incorporated Efficient back-end channel matched filter (CMF)
KR20060013544A (ko) * 2003-05-19 2006-02-10 텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘) 전송 채널에 대한 채널 추정의 결정
JP4661560B2 (ja) * 2005-11-30 2011-03-30 日本電気株式会社 同期追跡回路及びｃｄｍａ受信装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5499265A (en) * 1989-08-07 1996-03-12 Omnipoint Data Company, Incorporated Spread spectrum correlator
JP2697502B2 (ja) * 1992-07-30 1998-01-14 日本電気株式会社 スペクトル拡散受信装置
US5349606A (en) * 1992-12-31 1994-09-20 Gte Government Systems Corporation Apparatus for multipath DSSS communications
JP3143247B2 (ja) * 1993-01-11 2001-03-07 沖電気工業株式会社 符号分割多元接続復調装置
US5740208A (en) * 1993-06-25 1998-04-14 Roke Manor Research Limited Interference cancellation apparatus for mitigating the effects of poor affiliation between a base station and a mobile unit
KR0164250B1 (ko) * 1993-08-06 1999-02-01 고지 오보시 스펙트럼 확산 통신용 수신기 및 중계기
CN1078988C (zh) * 1995-06-13 2002-02-06 Ntt移动通信网株式会社 Cdma解调装置
JPH09223981A (ja) * 1996-02-16 1997-08-26 Omron Corp 受信装置
US5809020A (en) * 1996-03-18 1998-09-15 Motorola, Inc. Method for adaptively adjusting weighting coefficients in a cDMA radio receiver
JP2762996B1 (ja) 1996-12-11 1998-06-11 日本電気株式会社 受信装置
JP2856198B2 (ja) * 1997-06-11 1999-02-10 日本電気株式会社 スペクトラム拡散受信機
US6363104B1 (en) * 1998-10-02 2002-03-26 Ericsson Inc. Method and apparatus for interference cancellation in a rake receiver

Also Published As

Publication number Publication date
EP0982871A2 (en) 2000-03-01
CN1249638A (zh) 2000-04-05
EP0982871B1 (en) 2006-01-11
DE69929379T2 (de) 2006-09-07
DE69929379D1 (de) 2006-04-06
EP0982871A3 (en) 2003-09-17
KR20000017448A (ko) 2000-03-25
JP2000068981A (ja) 2000-03-03
CN1277420C (zh) 2006-09-27
KR100331907B1 (ko) 2002-04-10
JP2991196B1 (ja) 1999-12-20
US6628700B1 (en) 2003-09-30

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE 10A. ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 DA RPI 2047 DE 30/03/2010.

B15K Others concerning applications: alteration of classification

Free format text: PROCEDIMENTO AUTOMATICO DE RECLASSIFICACAO. AS CLASSIFICACOES IPC ANTERIORES ERAM: H04Q 7/38; H04J 13/04.

Ipc: H04B 1/7113 (2011.01), H04B 1/709 (2011.01), H04B

Ipc: H04B 1/7113 (2011.01), H04B 1/709 (2011.01), H04B