UA83705C2 - Method and apparatus (versions) for transmission of pilot-signal and method and apparatus (versions) for estimation of channel in a wireless communication system - Google Patents

Method and apparatus (versions) for transmission of pilot-signal and method and apparatus (versions) for estimation of channel in a wireless communication system

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Publication number
UA83705C2
UA83705C2 UAA200607451A UAA200607451A UA83705C2 UA 83705 C2 UA83705 C2 UA 83705C2 UA A200607451 A UAA200607451 A UA A200607451A UA A200607451 A UAA200607451 A UA A200607451A UA 83705 C2 UA83705 C2 UA 83705C2
Authority
UA
Ukraine
Prior art keywords
pilot
versions
transmitted
mimo
pilot symbols
Prior art date
Application number
UAA200607451A
Other languages
Russian (ru)
Ukrainian (uk)
Inventor
Авниш АГРАВАЛ
Original Assignee
Квелкомм Инкорпорейтед
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 Квелкомм Инкорпорейтед filed Critical Квелкомм Инкорпорейтед
Priority claimed from PCT/US2004/040429 external-priority patent/WO2005057870A1/en
Publication of UA83705C2 publication Critical patent/UA83705C2/en

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Abstract

Efficient pilot transmission schemes for multi-antenna communication systems are described. In general, MISO receivers prefer a pilot transmitted in one spatial direction, and MIMO receivers typically require a pilot transmitted in different spatial directions. In one pilot transmission scheme, a first set of Т scaled pilot symbols is generated with a first training vector and transmitted (e.g., continuously) from T transmit antennas, where Т>1. If MIMO receiver(s) are to be supported by the system, then at least T-l additional sets of Т scaled pilot symbols are generated with at least T-l additional training vectors and transmitted from the Т transmit antennas. The training vectors are for different (e.g., orthogonal) spatial directions. Each MISO receiver can estimate its MISO channel based on the first set of scaled pilot symbols. Each MIMO receiver can estimate its MIMO channel based on the first and additional sets of scaled pilot symbols.
UAA200607451A 2003-12-05 2004-12-03 Method and apparatus (versions) for transmission of pilot-signal and method and apparatus (versions) for estimation of channel in a wireless communication system UA83705C2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US52720103P 2003-12-05 2003-12-05
US89071804P 2004-07-13 2004-07-13
PCT/US2004/040429 WO2005057870A1 (en) 2003-12-05 2004-12-03 Multi-antenna system to simultaneous support of miso and mimo receivers

Publications (1)

Publication Number Publication Date
UA83705C2 true UA83705C2 (en) 2008-08-11

Family

ID=50723087

Family Applications (1)

Application Number Title Priority Date Filing Date
UAA200607451A UA83705C2 (en) 2003-12-05 2004-12-03 Method and apparatus (versions) for transmission of pilot-signal and method and apparatus (versions) for estimation of channel in a wireless communication system

Country Status (1)

Country Link
UA (1) UA83705C2 (en)

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