BRPI0412024A - método e aparelho para detecção de freqüência-robusta de um canal de sincronização secundário de acesso múltiplo por divisão de código de banda larga - Google Patents

método e aparelho para detecção de freqüência-robusta de um canal de sincronização secundário de acesso múltiplo por divisão de código de banda larga

Info

Publication number
BRPI0412024A
BRPI0412024A BRPI0412024-8A BRPI0412024A BRPI0412024A BR PI0412024 A BRPI0412024 A BR PI0412024A BR PI0412024 A BRPI0412024 A BR PI0412024A BR PI0412024 A BRPI0412024 A BR PI0412024A
Authority
BR
Brazil
Prior art keywords
signal
imaginary
real
frequency
produce
Prior art date
Application number
BRPI0412024-8A
Other languages
English (en)
Portuguese (pt)
Inventor
Louis Robert Litwin
Alton Shelborne Keel
Wen Gao
Original Assignee
Thomson Licensing
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 Thomson Licensing filed Critical Thomson Licensing
Publication of BRPI0412024A publication Critical patent/BRPI0412024A/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
    • H04B1/709—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
    • H04B1/7073—Synchronisation aspects
    • H04B1/70735—Code identification
    • 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
    • H04B1/7083—Cell search, e.g. using a three-step approach
    • 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
    • H04B1/7093—Matched filter type

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
BRPI0412024-8A 2003-07-02 2004-07-01 método e aparelho para detecção de freqüência-robusta de um canal de sincronização secundário de acesso múltiplo por divisão de código de banda larga BRPI0412024A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/612,310 US7684472B2 (en) 2003-07-02 2003-07-02 Method and apparatus for frequency-robust detection of a wideband code division multiple access secondary synchronization channel
PCT/US2004/021304 WO2005002312A2 (en) 2003-07-02 2004-07-01 Method and apparatus for frequency-robust detection of a wideband code division multiple access secondary synchronization channel

Publications (1)

Publication Number Publication Date
BRPI0412024A true BRPI0412024A (pt) 2006-08-15

Family

ID=33552489

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0412024-8A BRPI0412024A (pt) 2003-07-02 2004-07-01 método e aparelho para detecção de freqüência-robusta de um canal de sincronização secundário de acesso múltiplo por divisão de código de banda larga

Country Status (8)

Country Link
US (1) US7684472B2 (enExample)
EP (1) EP1638448A4 (enExample)
JP (1) JP4664286B2 (enExample)
KR (1) KR20060025588A (enExample)
CN (1) CN1890933A (enExample)
BR (1) BRPI0412024A (enExample)
MX (1) MXPA05013953A (enExample)
WO (1) WO2005002312A2 (enExample)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
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WO2006080904A1 (en) 2005-01-14 2006-08-03 Thomson Licensing Method and system for sub-chip resolution for secondary cell search
CN101103547A (zh) * 2005-01-14 2008-01-09 汤姆森特许公司 使用执行扰码确定的瑞克搜索器的小区搜索
JP2008527912A (ja) * 2005-01-14 2008-07-24 トムソン ライセンシング Ｃｄｍａ用のｒａｍベーススクランブル符号生成装置
US8223623B2 (en) * 2005-03-28 2012-07-17 Qualcomm Incorporated Timing and frequency acquisition for OFDM systems
CN101197804B (zh) * 2006-12-04 2011-09-21 华为技术有限公司 一种同步处理方法及系统
US8457178B2 (en) 2007-03-26 2013-06-04 Qualcomm Incorporated Frequency offset estimator
KR101512334B1 (ko) * 2008-09-09 2015-04-15 삼성전자주식회사 비동기식 이동통신 시스템에서 셀 탐색 방법 및 장치
US20100124175A1 (en) * 2008-11-14 2010-05-20 Chi-Tung Chang Apparatus and method for adaptively calculating symbolic start position
KR101507087B1 (ko) * 2009-01-07 2015-03-30 삼성전자주식회사 광대역 무선통신 시스템에서 부 동기 채널 송수신 장치 및 방법
CN102769477B (zh) * 2011-05-06 2014-08-27 普天信息技术研究院有限公司 实现小区搜索和下行同步的方法和系统
US9215622B1 (en) * 2012-07-30 2015-12-15 GoNet Systems Ltd. Method and systems for associating wireless transmission with directions-of-arrival thereof
TWI510034B (zh) * 2013-12-02 2015-11-21 Realtek Semiconductor Corp 載波頻率偏移校正方法以及機器可讀媒體
KR102341299B1 (ko) * 2015-02-11 2021-12-21 삼성전자주식회사 셀 탐색 및 주파수 옵셋 추정 방법 및 장치
CN108738123B (zh) * 2017-04-14 2020-12-25 普天信息技术有限公司 一种同步信号发送方法和装置

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
US5414729A (en) * 1992-01-24 1995-05-09 Novatel Communications Ltd. Pseudorandom noise ranging receiver which compensates for multipath distortion by making use of multiple correlator time delay spacing
JP3289851B2 (ja) * 1993-06-03 2002-06-10 ソニー株式会社 無線装置
JP2741336B2 (ja) * 1993-11-26 1998-04-15 エヌ・ティ・ティ移動通信網株式会社 帯域拡散信号受信機の周波数誤差補正装置
US6526091B1 (en) * 1998-08-17 2003-02-25 Telefonaktiebolaget Lm Ericsson Communication methods and apparatus based on orthogonal hadamard-based sequences having selected correlation properties
US6298227B1 (en) * 1998-12-22 2001-10-02 Ericsson Inc. Method and apparatus for frequency conversion for a receiver with a limited-accuracy oscillator
US6567482B1 (en) * 1999-03-05 2003-05-20 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for efficient synchronization in spread spectrum communications
US7039036B1 (en) * 1999-04-01 2006-05-02 Texas Instruments Incorporated Reduced complexity primary and secondary synchronization codes with good correlation properties for WCDMA
SG90052A1 (en) * 1999-05-28 2002-07-23 Oki Techno Ct Singapore Pte A cdma receiver
KR100319927B1 (ko) * 2000-01-11 2002-01-09 윤종용 비동기식 광대역 직접 시퀀스 코드분할다중접속 수신기의셀 탐색 장치 및 각 셀에 고유한 코드 획득 방법
JP2002009670A (ja) * 2000-06-23 2002-01-11 Hitachi Ltd 同期捕捉回路
JP3394530B2 (ja) * 2001-08-07 2003-04-07 松下電器産業株式会社 セルサーチ装置およびセルサーチ方法
GB2386444B (en) * 2002-03-12 2004-05-26 Toshiba Res Europ Ltd Digital correlators
US7126981B2 (en) * 2002-04-25 2006-10-24 Accton Technology Corporation Method and apparatus for cell search for W-CDMA with effect of clock offset
TWI224740B (en) * 2002-07-31 2004-12-01 Interdigital Tech Corp Start-up automatic frequency control (AFC) method and apparatus
US7315600B2 (en) * 2004-03-30 2008-01-01 Arm Limited Asynchronous FIFO apparatus and method for passing data between a first clock domain and a second clock domain and a second clock domain of a data processing apparatus

Also Published As

Publication number Publication date
US7684472B2 (en) 2010-03-23
JP4664286B2 (ja) 2011-04-06
WO2005002312A2 (en) 2005-01-13
JP2007525101A (ja) 2007-08-30
EP1638448A2 (en) 2006-03-29
EP1638448A4 (en) 2011-09-28
WO2005002312A3 (en) 2006-05-18
KR20060025588A (ko) 2006-03-21
US20050002446A1 (en) 2005-01-06
MXPA05013953A (es) 2006-05-31
CN1890933A (zh) 2007-01-03

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 9A 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 PUBLICADO NA RPI 2259 DE 22/04/2014.