CA2714455C - Methods and systems for choosing cyclic delays in multiple antenna ofdm systems - Google Patents

Methods and systems for choosing cyclic delays in multiple antenna ofdm systems Download PDF

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Publication number
CA2714455C
CA2714455C CA2714455A CA2714455A CA2714455C CA 2714455 C CA2714455 C CA 2714455C CA 2714455 A CA2714455 A CA 2714455A CA 2714455 A CA2714455 A CA 2714455A CA 2714455 C CA2714455 C CA 2714455C
Authority
CA
Canada
Prior art keywords
pilot
transmit antenna
generating
cyclic delay
processing
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CA2714455A
Other languages
English (en)
French (fr)
Other versions
CA2714455A1 (en
Inventor
Pranav Dayal
Ayman Fawzy Naguib
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
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
Priority claimed from US12/357,935 external-priority patent/US8570939B2/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of CA2714455A1 publication Critical patent/CA2714455A1/en
Application granted granted Critical
Publication of CA2714455C publication Critical patent/CA2714455C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0671—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different delays between antennas
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • 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
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/0256—Channel estimation using minimum mean square error criteria
    • 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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)
CA2714455A 2008-03-14 2009-02-25 Methods and systems for choosing cyclic delays in multiple antenna ofdm systems Expired - Fee Related CA2714455C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US3689508P 2008-03-14 2008-03-14
US61/036,895 2008-03-14
US12/357,935 US8570939B2 (en) 2008-03-07 2009-01-22 Methods and systems for choosing cyclic delays in multiple antenna OFDM systems
US12/357,935 2009-01-22
PCT/US2009/035196 WO2010011369A2 (en) 2008-03-14 2009-02-25 Methods and systems for choosing cyclic delays in multiple antenna ofdm systems

Publications (2)

Publication Number Publication Date
CA2714455A1 CA2714455A1 (en) 2010-01-28
CA2714455C true CA2714455C (en) 2013-07-09

Family

ID=41478800

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2714455A Expired - Fee Related CA2714455C (en) 2008-03-14 2009-02-25 Methods and systems for choosing cyclic delays in multiple antenna ofdm systems

Country Status (9)

Country Link
EP (1) EP2266247A2 (pt)
JP (1) JP5579626B2 (pt)
KR (1) KR101200510B1 (pt)
CN (2) CN106506054A (pt)
BR (1) BRPI0908916A2 (pt)
CA (1) CA2714455C (pt)
RU (1) RU2471298C2 (pt)
TW (1) TWI482445B (pt)
WO (1) WO2010011369A2 (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100952336B1 (ko) * 2007-10-25 2010-04-09 에스케이 텔레콤주식회사 멀티 비교기준정보를 이용한 상품비교 방법 및 그를 위한상품비교 서버
KR101115442B1 (ko) * 2008-10-23 2012-02-21 에스케이플래닛 주식회사 상품을 비교하는 방법 및 쇼핑몰 서버
EP2663000B1 (en) 2011-01-07 2019-05-01 Sun Patent Trust Transmitter, receiver, transmission method, and reception method
CN103686830A (zh) * 2012-09-26 2014-03-26 电信科学技术研究院 一种测试终端移动速度的方法及设备
CN104506283B (zh) * 2014-11-10 2017-10-20 中国电子科技集团公司第二十研究所 基于多根发送天线的向量ofdm的循环延迟发送方法
KR101706629B1 (ko) 2016-01-25 2017-02-16 주식회사 이노와이어리스 Ｍｉｍｏ-ｏｆｄｍ 송신기에 대한 파워 캘리브레이션 방법
US10063306B2 (en) * 2016-10-24 2018-08-28 Mitsubishi Electric Research Laboratories, Inc. Method and systems using quasi-synchronous distributed CDD systems
US10237055B1 (en) * 2017-12-12 2019-03-19 Mitsubishi Electric Research Laboratories, Inc. Method and systems for radio transmission with distributed cyclic delay diversity

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100291476B1 (ko) * 1998-05-25 2001-07-12 윤종용 파일럿측정요구명령제어방법및시스템
US6546248B1 (en) * 2000-02-10 2003-04-08 Qualcomm, Incorporated Method and apparatus for generating pilot strength measurement messages
US7248559B2 (en) * 2001-10-17 2007-07-24 Nortel Networks Limited Scattered pilot pattern and channel estimation method for MIMO-OFDM systems
US8233555B2 (en) * 2004-05-17 2012-07-31 Qualcomm Incorporated Time varying delay diversity of OFDM
US8577299B2 (en) * 2004-06-04 2013-11-05 Qualcomm Incorporated Wireless communication system with configurable cyclic prefix length
KR100938091B1 (ko) * 2004-10-13 2010-01-21 삼성전자주식회사 직교주파수다중분할 이동통신시스템에서 블록 부호화기법과 순환 지연 다이버시티 기법을 사용하는 기지국송신 장치 및 방법
US9520972B2 (en) * 2005-03-17 2016-12-13 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
CN1838655A (zh) * 2005-03-24 2006-09-27 北京三星通信技术研究有限公司 Mimo－ofdm接收机
RU2008117460A (ru) * 2005-11-04 2009-11-10 Панасоник Корпорэйшн (Jp) Радиопередающее устройство, радиоприемное устройство, способ беспроводной связи и система беспроводной связи
US7848438B2 (en) * 2006-02-14 2010-12-07 Motorola Mobility, Inc. Method and apparatus for pilot signal transmission
KR101037829B1 (ko) * 2006-04-25 2011-05-31 닛본 덴끼 가부시끼가이샤 파일럿 신호 전송 방법 및 무선 통신 장치
JP2008048092A (ja) * 2006-08-14 2008-02-28 Toshiba Corp Ｏｆｄｍを用いる無線送信方法、送信機及び受信機

Also Published As

Publication number Publication date
BRPI0908916A2 (pt) 2018-02-14
WO2010011369A3 (en) 2010-05-20
CN106506054A (zh) 2017-03-15
WO2010011369A2 (en) 2010-01-28
RU2471298C2 (ru) 2012-12-27
JP5579626B2 (ja) 2014-08-27
EP2266247A2 (en) 2010-12-29
CA2714455A1 (en) 2010-01-28
TW201014234A (en) 2010-04-01
KR101200510B1 (ko) 2012-11-13
TWI482445B (zh) 2015-04-21
KR20100124329A (ko) 2010-11-26
JP2011517518A (ja) 2011-06-09
CN101939943A (zh) 2011-01-05
RU2010141988A (ru) 2012-04-20

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Effective date: 20200225