KR100886817B1 - 무선 통신망에서의 주파수 취득 시스템 및 방법 - Google Patents

무선 통신망에서의 주파수 취득 시스템 및 방법 Download PDF

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Publication number
KR100886817B1
KR100886817B1 KR1020067017390A KR20067017390A KR100886817B1 KR 100886817 B1 KR100886817 B1 KR 100886817B1 KR 1020067017390 A KR1020067017390 A KR 1020067017390A KR 20067017390 A KR20067017390 A KR 20067017390A KR 100886817 B1 KR100886817 B1 KR 100886817B1
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South Korea
Prior art keywords
counter
frequency offset
threshold
metric
metric value
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KR1020067017390A
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English (en)
Korean (ko)
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KR20060126798A (ko
Inventor
알록 케이. 굽타
퓨연 링
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콸콤 인코포레이티드
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Priority claimed from US11/020,413 external-priority patent/US8433005B2/en
Application filed by 콸콤 인코포레이티드 filed Critical 콸콤 인코포레이티드
Publication of KR20060126798A publication Critical patent/KR20060126798A/ko
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Publication of KR100886817B1 publication Critical patent/KR100886817B1/ko

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    • 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
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • 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
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • 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
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • 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
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26132—Structure of the reference signals using repetition
    • 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
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
    • 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
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • 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
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols
    • 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
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H04L27/2695—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with channel estimation, e.g. determination of delay spread, derivative or peak tracking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
KR1020067017390A 2004-01-28 2005-01-24 무선 통신망에서의 주파수 취득 시스템 및 방법 KR100886817B1 (ko)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US???? 2004-01-16
US54008904P 2004-01-28 2004-01-28
US53994104P 2004-01-28 2004-01-28
US60/539,941 2004-01-28
US60/540,089 2004-01-28
US11/021,028 2004-12-22
US11/020,413 US8433005B2 (en) 2004-01-28 2004-12-22 Frame synchronization and initial symbol timing acquisition system and method
PCT/US2005/002306 WO2005074222A1 (en) 2004-01-28 2005-01-24 Systems and methods for frequency acquisition in a wireless communication network

Publications (2)

Publication Number Publication Date
KR20060126798A KR20060126798A (ko) 2006-12-08
KR100886817B1 true KR100886817B1 (ko) 2009-03-05

Family

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Application Number Title Priority Date Filing Date
KR1020067017390A KR100886817B1 (ko) 2004-01-28 2005-01-24 무선 통신망에서의 주파수 취득 시스템 및 방법

Country Status (4)

Country Link
EP (1) EP1712052A1 (zh)
KR (1) KR100886817B1 (zh)
CN (1) CN1998210A (zh)
WO (1) WO2005074222A1 (zh)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8027372B2 (en) 2004-06-18 2011-09-27 Qualcomm Incorporated Signal acquisition in a wireless communication system
CN100352243C (zh) * 2005-08-19 2007-11-28 中兴通讯股份有限公司 时分同步码分多址系统多载波高速下行分组接入实现方法
US8738056B2 (en) 2006-05-22 2014-05-27 Qualcomm Incorporation Signal acquisition in a wireless communication system
CN101467413B (zh) * 2006-06-13 2013-08-21 高通股份有限公司 用于在无线通信系统中发送和接收导频的方法和装置
US8929353B2 (en) 2007-05-09 2015-01-06 Qualcomm Incorporated Preamble structure and acquisition for a wireless communication system
ATE511284T1 (de) * 2006-06-13 2011-06-15 Qualcomm Inc Präambelstruktur und erfassung für ein drahtloses kommunikationssystem
CN101989907B (zh) * 2009-07-31 2014-04-23 王知康 互联网时钟同步装置及方法
CN103259570A (zh) * 2012-02-15 2013-08-21 重庆金美通信有限责任公司 一种改进的大多普勒频移下的频偏补偿技术
CN104702554B (zh) * 2013-12-09 2017-12-15 瑞昱半导体股份有限公司 载波频率偏移校正方法
EP3195544A1 (en) * 2014-09-18 2017-07-26 Telefonaktiebolaget LM Ericsson (publ) Frequency estimation
KR102477037B1 (ko) * 2017-12-01 2022-12-14 엘지전자 주식회사 무선 통신 시스템에서 채널 추정을 위한 방법 및 이를 위한 장치
CN110536405B (zh) * 2018-05-25 2021-08-03 华为技术有限公司 一种同步方法及接入点

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003028270A1 (en) * 2001-09-24 2003-04-03 Atheros Communications, Inc. Post-fft scaling to reduce multiple effects and fine frequency offset estimation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100402906B1 (ko) * 2001-02-08 2003-10-22 (주)아이앤씨테크놀로지 직교주파수분할다중방식에서의 주파수 오프셋 동기화 장치및 방법
SG111072A1 (en) * 2002-07-03 2005-05-30 Oki Techno Ct Singapore Pte Receiver and method for wlan burst type signals
KR100479864B1 (ko) * 2002-11-26 2005-03-31 학교법인 중앙대학교 이동 통신 시스템에서의 하향링크 신호의 구성 방법과동기화 방법 및 그 장치 그리고 이를 이용한 셀 탐색 방법

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003028270A1 (en) * 2001-09-24 2003-04-03 Atheros Communications, Inc. Post-fft scaling to reduce multiple effects and fine frequency offset estimation

Also Published As

Publication number Publication date
EP1712052A1 (en) 2006-10-18
CN1998210A (zh) 2007-07-11
KR20060126798A (ko) 2006-12-08
WO2005074222A1 (en) 2005-08-11

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