Reference : A multiuser downlink system combining limited feedback and channel correlaton information
Scientific congresses, symposiums and conference proceedings : Paper published in a book
Engineering, computing & technology : Computer science
Engineering, computing & technology : Electrical & electronics engineering
http://hdl.handle.net/10993/7595
A multiuser downlink system combining limited feedback and channel correlaton information
English
Huang, Yongming [> >]
Yang, Luxi [> >]
Bengtsson, Mats [> >]
Ottersten, Björn mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
2010
Communications (ICC), 2010 IEEE International Conference on
IEEE
1-5
Yes
International
978-1-4244-6402-9
Communications (ICC), 2010 IEEE International Conference on
23-27 May 2010
Cape Town
South Africa
[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.
Others
http://hdl.handle.net/10993/7595
10.1109/ICC.2010.5502116

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