[go: up one dir, main page]

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

Info

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

Links

Landscapes

  • Radio Transmission System (AREA)

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)

Similar Documents

Publication Publication Date Title
AR046751A1 (en) PILOT TRANSMISSION SCHEMES FOR A MULTIPLE ANTENNAS SYSTEM
US8290539B2 (en) Beam selection in open loop MU-MIMO
US20110176633A1 (en) Method and system for orthogonalized beamforming in multiple user multiple input multiple output (mu-mimo) communication systems
SG153656A1 (en) Efficient multiple input multiple output system for multi-path fading channels
US20160105226A1 (en) Methods for Opportunistic Multi-User Beamforming in Collaborative MIMO-SDMA
US8194762B2 (en) Feedforward of non-quantized precoding weights in a wireless communications system
SG150535A1 (en) Multi-antenna transmission for spatial division multiple access
CA2542270A1 (en) Receiver spatial processing for eigenmode transmission in a mimo system
US20140185700A1 (en) Method and apparatus for linear precoding in multi-user multiple-input multiple-output system
CN105745893B (en) Large-scale fading coefficient estimation method and mobile station in wireless massive MIMO system
US8594215B2 (en) MIMO system having a plurality of service antennas for data transmission thereof
MX2009001250A (en) Method, apparatus and system for implementing multi-user virtual multiple-input multiple-output.
RU2006135107A (en) TRANSMISSION SPACE AND SPATIAL EXTENSION FOR A COMMUNICATION SYSTEM WITH ANYTHE ANTENNAS USING MULTIPLEXING WITH ORTHOGONAL FREQUENCY DIVERSITY
KR20080106428A (en) Apparatus, System and Method for Providing MIO Channel Interface
TW200718065A (en) Method and apparatus for providing antenna diversity in a wireless communication system
CN101471712A (en) Method, apparatus and base station for processing precoding of multi-input multi-output broadcast channel
US8149946B2 (en) Joint transceiver design for MIMO communications
WO2005104651A3 (en) Apparatus, and associated method, for facilitating closed-loop power control in a communication system utilizing a multiple transmit antenna configuration
CN103634071B (en) Pre-coding matrix selection method, device and system
KR20090053599A (en) Apparatus and method for data transmission / reception for transmission antenna selection and multiple input / output channel estimation for uplink data transmission in time division multiplexing wireless communication system including multiple input / output antennas
UA83705C2 (en) Method and apparatus (versions) for transmission of pilot-signal and method and apparatus (versions) for estimation of channel in a wireless communication system
WO2006095829A1 (en) Base station, communication terminal apparatus, and data detecting method in mimo system
TW200513052A (en) Method and system of path gain estimation in a WCDMA system
Davis et al. Channel estimation and user selection in the MIMO broadcast channel
US7412011B2 (en) Joint ratio estimation and weights detection in closed loop transmit diversity