BRPI0908916A2 - methods and systems for choosing cyclic portraits in multi-antenna ofdm systems - Google Patents

methods and systems for choosing cyclic portraits in multi-antenna ofdm systems

Info

Publication number
BRPI0908916A2
BRPI0908916A2 BRPI0908916A BRPI0908916A BRPI0908916A2 BR PI0908916 A2 BRPI0908916 A2 BR PI0908916A2 BR PI0908916 A BRPI0908916 A BR PI0908916A BR PI0908916 A BRPI0908916 A BR PI0908916A BR PI0908916 A2 BRPI0908916 A2 BR PI0908916A2
Authority
BR
Brazil
Prior art keywords
systems
portraits
choosing
cyclic
methods
Prior art date
Application number
BRPI0908916A
Other languages
Portuguese (pt)
Inventor
Fawzy Naguib Ayman
Dayal Pranav
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 BRPI0908916A2 publication Critical patent/BRPI0908916A2/en

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)
BRPI0908916A 2008-03-14 2009-02-25 methods and systems for choosing cyclic portraits in multi-antenna ofdm systems BRPI0908916A2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US3689508P 2008-03-14 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
PCT/US2009/035196 WO2010011369A2 (en) 2008-03-14 2009-02-25 Methods and systems for choosing cyclic delays in multiple antenna ofdm systems

Publications (1)

Publication Number Publication Date
BRPI0908916A2 true BRPI0908916A2 (en) 2018-02-14

Family

ID=41478800

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0908916A BRPI0908916A2 (en) 2008-03-14 2009-02-25 methods and systems for choosing cyclic portraits in multi-antenna ofdm systems

Country Status (9)

Country Link
EP (1) EP2266247A2 (en)
JP (1) JP5579626B2 (en)
KR (1) KR101200510B1 (en)
CN (2) CN101939943A (en)
BR (1) BRPI0908916A2 (en)
CA (1) CA2714455C (en)
RU (1) RU2471298C2 (en)
TW (1) TWI482445B (en)
WO (1) WO2010011369A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100952336B1 (en) * 2007-10-25 2010-04-09 에스케이 텔레콤주식회사 Method and Server for Comparing Goods Based on Multi-Criteria
KR101115442B1 (en) * 2008-10-23 2012-02-21 에스케이플래닛 주식회사 Method and Server for Comparing Commodities
EP3515006B1 (en) 2011-01-07 2020-08-12 Sun Patent Trust Integrated circuit, transmitter and transmission method
CN103686830A (en) * 2012-09-26 2014-03-26 电信科学技术研究院 Method and device for measuring movement speed of terminal
CN104506283B (en) * 2014-11-10 2017-10-20 中国电子科技集团公司第二十研究所 The circulation delay sending method of vectorial OFDM based on many transmission antennas
KR101706629B1 (en) 2016-01-25 2017-02-16 주식회사 이노와이어리스 power calibration method for MIMO-OFDM transmitter
US10063306B2 (en) * 2016-10-24 2018-08-28 Mitsubishi Electric Research Laboratories, Inc. Method and systems using quasi-synchronous distributed CDD systems

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100291476B1 (en) * 1998-05-25 2001-07-12 윤종용 A method and a system for controlling a pilot measurement request order in cellular system
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
US8588203B2 (en) * 2004-06-04 2013-11-19 Qualcomm Incorporated Wireless communication system with improved broadcast coverage
KR100938091B1 (en) * 2004-10-13 2010-01-21 삼성전자주식회사 Apparatus and method for providing efficient transmission using block coding and cyclic delay diversities in the OFDM based cellular systems
US9520972B2 (en) * 2005-03-17 2016-12-13 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
CN1838655A (en) * 2005-03-24 2006-09-27 北京三星通信技术研究有限公司 MIMO-OFDM receiver
CA2625387A1 (en) * 2005-11-04 2007-05-10 Matsushita Electric Industrial Co. Ltd. Radio transmitting apparatus, radio receiving apparatus, wireless communication method, and wireless communication system
US7848438B2 (en) * 2006-02-14 2010-12-07 Motorola Mobility, Inc. Method and apparatus for pilot signal transmission
US8121105B2 (en) * 2006-04-25 2012-02-21 Nec Corporation Pilot signal transmission method and radio communication apparatus
JP2008048092A (en) * 2006-08-14 2008-02-28 Toshiba Corp Radio transmission method using ofdm, transmitter and receiver

Also Published As

Publication number Publication date
TW201014234A (en) 2010-04-01
WO2010011369A3 (en) 2010-05-20
CN101939943A (en) 2011-01-05
CA2714455C (en) 2013-07-09
RU2471298C2 (en) 2012-12-27
JP5579626B2 (en) 2014-08-27
KR20100124329A (en) 2010-11-26
CN106506054A (en) 2017-03-15
CA2714455A1 (en) 2010-01-28
JP2011517518A (en) 2011-06-09
EP2266247A2 (en) 2010-12-29
WO2010011369A2 (en) 2010-01-28
KR101200510B1 (en) 2012-11-13
TWI482445B (en) 2015-04-21
RU2010141988A (en) 2012-04-20

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B15K Others concerning applications: alteration of classification

Free format text: A CLASSIFICACAO ANTERIOR ERA: H04L 5/00

Ipc: H04B 7/06 (1968.09), H04L 5/00 (1968.09), H04L 27/

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

Free format text: REFERENTE A 11A 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 2555 DE 24/12/2019.