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A multiuser downlink system combining limited feedback and channel correlaton information
Huang, Yongming; Yang, Luxi; Bengtsson, Mats et al.
2010In Communications (ICC), 2010 IEEE International Conference on
Peer reviewed
 

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Abstract :
[en] We address the problem of combining limited feedback information with long-term channel statistical information in the design of downlink SDMA schemes. A novel combining method is developed to improve the quality of channel knowledge at the base station. More specifically, a set of novel feedback parameters is proposed and a related method is developed to estimate a representation of the multiuser channel vectors at the base station. This method utilizes the hybrid information by combining instantaneous channel feedback and long-term channel statistics, and is based on a channel phase codebook designed using the generalized Lloyd algorithm. The estimated channel knowledge at the base station can be used for joint design of multiuser precoding and opportunistic scheduling. The advantage of the proposed scheme over existing CSI quantization based SDMA schemes is further confirmed by computer simulations.
Disciplines :
Computer science
Electrical & electronics engineering
Identifiers :
UNILU:UL-ARTICLE-2010-604
Author, co-author :
Huang, Yongming
Yang, Luxi
Bengtsson, Mats
OTTERSTEN, Björn  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Language :
English
Title :
A multiuser downlink system combining limited feedback and channel correlaton information
Publication date :
2010
Event name :
Communications (ICC), 2010 IEEE International Conference on
Event place :
Cape Town, South Africa
Event date :
23-27 May 2010
Audience :
International
Main work title :
Communications (ICC), 2010 IEEE International Conference on
Publisher :
IEEE
ISBN/EAN :
978-1-4244-6402-9
Pages :
1-5
Peer reviewed :
Peer reviewed
Available on ORBilu :
since 03 October 2013

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