MXPA04002839A - Metodo y aparato para correccion automatica de frecuencia para modos duplex de division del tiempo en comunicaciones inalambricas 3g. - Google Patents

Metodo y aparato para correccion automatica de frecuencia para modos duplex de division del tiempo en comunicaciones inalambricas 3g.

Info

Publication number
MXPA04002839A
MXPA04002839A MXPA04002839A MXPA04002839A MXPA04002839A MX PA04002839 A MXPA04002839 A MX PA04002839A MX PA04002839 A MXPA04002839 A MX PA04002839A MX PA04002839 A MXPA04002839 A MX PA04002839A MX PA04002839 A MXPA04002839 A MX PA04002839A
Authority
MX
Mexico
Prior art keywords
block
detection
wireless communications
time division
correction method
Prior art date
Application number
MXPA04002839A
Other languages
English (en)
Inventor
S Sternberg Gregory
Original Assignee
Interdigital Tech 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 Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of MXPA04002839A publication Critical patent/MXPA04002839A/es

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
    • 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
    • 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
    • H04B1/7087—Carrier synchronisation aspects
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0063—Elements of loops
    • H04L2027/0065—Frequency error detectors

Landscapes

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

Abstract

Metodo y aparato para la deteccion y la correccion del error de frecuencia del oscilador dentro de un receptor de sistema de comunicacion inalambrica. Un estimador de frecuencia que tiene correlatores de bloque, producto y suma conjugados; bloque de acumulacion, deteccion de vias multiples y un filtro de circuito (bloque acumulado) (ancho de banda adaptable). La deteccion de vias multiples incluye un bloque de busqueda, un bloque de deteccion del umbral y un bloque para combinar los componentes de vias multiples. La diferencia de frecuencias que se alcanza entre un oscilador local (LO) de la estacion base (BS) y un oscilador local del equipo del usuario (UE) es tal que el UE LO no se desvia mas de 0.1 PPM del BS LO.
MXPA04002839A 2001-09-28 2002-09-27 Metodo y aparato para correccion automatica de frecuencia para modos duplex de division del tiempo en comunicaciones inalambricas 3g. MXPA04002839A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32550501P 2001-09-28 2001-09-28
PCT/US2002/030802 WO2003030400A1 (en) 2001-09-28 2002-09-27 Automatic frequency correction method and apparatus for time division duplex modes of 3g wireless communications

Publications (1)

Publication Number Publication Date
MXPA04002839A true MXPA04002839A (es) 2004-07-05

Family

ID=23268158

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA04002839A MXPA04002839A (es) 2001-09-28 2002-09-27 Metodo y aparato para correccion automatica de frecuencia para modos duplex de division del tiempo en comunicaciones inalambricas 3g.

Country Status (10)

Country Link
US (2) US6606487B2 (es)
EP (1) EP1436907A1 (es)
JP (1) JP2005505966A (es)
KR (4) KR20070105383A (es)
CN (1) CN1561584A (es)
CA (1) CA2461336C (es)
MX (1) MXPA04002839A (es)
NO (1) NO20041722L (es)
TW (3) TW200633408A (es)
WO (1) WO2003030400A1 (es)

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CN1071977C (zh) 1993-03-05 2001-09-26 杰姆斯达发展公司 使用压缩码作电视节目录像时间排定的装置与方法
TW200633408A (en) * 2001-09-28 2006-09-16 Interdigital Tech Corp Automatic frequency correction method and apparatus for time division duplex modes of 3G wireless communications
JP3581357B2 (ja) * 2002-05-22 2004-10-27 松下電器産業株式会社 通信端末装置及び拡散コード推定方法
US7177602B2 (en) * 2002-09-23 2007-02-13 Telefonaktiebolaget Lm Ericsson (Publ) Electronic devices having automatic frequency control systems and methods and computer program products for operating the same
KR100556862B1 (ko) 2003-06-24 2006-03-10 엘지전자 주식회사 이동 통신단말기의 주파수 자동 조절 장치
US7336739B2 (en) * 2003-09-26 2008-02-26 Lockheed Martin Corporation Cross-correlation signal detector
KR100630043B1 (ko) * 2003-11-06 2006-09-27 삼성전자주식회사 이동통신시스템의 수신단에서의 주파수 오차 추정 및 결합기
US7474718B2 (en) * 2003-12-30 2009-01-06 Nokia Corporation Frequency control for a mobile communications device
US20050219002A1 (en) * 2004-03-31 2005-10-06 Vikram Magoon Tuning an oscillator
US7155176B2 (en) * 2004-04-08 2006-12-26 Skyworks Solutions, Inc. System for synchronizing a portable transceiver to a network
DE102004025109B4 (de) * 2004-05-21 2007-05-03 Infineon Technologies Ag Vorrichtung und Verfahren zur Präambeldetektion und Rahmensynchronisation bei der Datenpaketübertragung
US8806533B1 (en) 2004-10-08 2014-08-12 United Video Properties, Inc. System and method for using television information codes
KR100600817B1 (ko) * 2004-12-09 2006-07-18 한국전자통신연구원 주기적 상관 관계의 특성을 이용한 타이밍 에러 검출 장치및 그 방법
GB2429877B (en) * 2005-09-06 2008-02-06 Motorola Inc Radio link handover in a cellular communication system
US7886334B1 (en) 2006-12-11 2011-02-08 Qurio Holdings, Inc. System and method for social network trust assessment
TWI384786B (zh) * 2007-03-02 2013-02-01 Fujitsu Semiconductor Ltd 安布調變序列
US8045506B2 (en) 2007-04-18 2011-10-25 Trueposition, Inc. Sparsed U-TDOA wireless location networks
US8041367B2 (en) * 2007-04-18 2011-10-18 Trueposition, Inc. Sparsed U-TDOA wireless location networks
US8140092B2 (en) 2007-04-18 2012-03-20 Trueposition, Inc. Sparsed U-TDOA wireless location networks
US8242959B2 (en) 2007-04-18 2012-08-14 Trueposition, Inc. Sparsed U-TDOA wireless location networks
KR100930181B1 (ko) 2007-09-28 2009-12-07 삼성전기주식회사 Ｇｐｓ 수신기의 주파수 오차 보상 방법
US20090175468A1 (en) * 2008-01-09 2009-07-09 Mediatek Inc. Methods for preventing unwanted sound caused by gain changes
CN102195645A (zh) * 2011-03-31 2011-09-21 复旦大学 一种适用于软件无线电系统的频率综合器
TWI462539B (zh) * 2012-03-06 2014-11-21 Mstar Semiconductor Inc 頻率校正方法
US9031117B2 (en) * 2012-12-06 2015-05-12 Qualcomm Incorporated Methods and apparatus for handling fingers with large delay spread through utility optimization
WO2014129978A1 (en) * 2013-02-22 2014-08-28 Agency For Science, Technology And Research Digital auto frequency control for a general purpose if subsystem with multi-modulation schemes
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
KR102633143B1 (ko) 2016-12-23 2024-02-02 삼성전자주식회사 무선 채널 분류를 기초로 디지털 루프 필터 이득을 조절하는 자동 주파수 제어기, 상기 자동 주파수 제어기를 포함하는 무선 통신 장치, 자동 주파수 제어 방법 및 무선 통신 방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5684836A (en) * 1994-12-22 1997-11-04 Mitsubishi Denki Kabushiki Kaisha Receiver with automatic frequency control
JP3966523B2 (ja) * 1997-10-20 2007-08-29 富士通株式会社 自動周波数制御回路及び自動周波数制御方法
US6728301B1 (en) * 2000-07-07 2004-04-27 Texas Instruments Incorporated System and method for automatic frequency control in spread spectrum communications
TW200633408A (en) * 2001-09-28 2006-09-16 Interdigital Tech Corp Automatic frequency correction method and apparatus for time division duplex modes of 3G wireless communications

Also Published As

Publication number Publication date
KR20040037121A (ko) 2004-05-04
TW580790B (en) 2004-03-21
WO2003030400A1 (en) 2003-04-10
JP2005505966A (ja) 2005-02-24
TW200417169A (en) 2004-09-01
CN1561584A (zh) 2005-01-05
KR20080058502A (ko) 2008-06-25
US6606487B2 (en) 2003-08-12
CA2461336A1 (en) 2003-04-10
US20030064693A1 (en) 2003-04-03
EP1436907A1 (en) 2004-07-14
TWI285031B (en) 2007-08-01
KR20050090482A (ko) 2005-09-13
CA2461336C (en) 2008-01-22
TW200633408A (en) 2006-09-16
US20030224744A1 (en) 2003-12-04
NO20041722L (no) 2004-06-28
US7103339B2 (en) 2006-09-05
KR20070105383A (ko) 2007-10-30

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