DocumentCode :
3559857
Title :
A limited feedback precoding system with hierarchical codebook and linear receiver
Author :
Huang, Yongming ; Xu, Daofeng ; Yang, Luxi ; Zhu, Wei-Ping
Author_Institution :
Sch. of Inf. Sci. & Eng., Southeast Univ., Nanjing
Volume :
7
Issue :
12
fYear :
2008
fDate :
12/1/2008 12:00:00 AM
Firstpage :
4843
Lastpage :
4848
Abstract :
In this paper, the conventional Grassmannian codebook for precoding is first analyzed, showing that the performance loss caused by linear receivers was not taken into account. To tackle the performance loss issue, a novel hierarchical codebook consisting of a Grassmannian subcodebook and a perturbation subcodebook is then proposed for precoding systems with linear receivers. A two-step codeword selection scheme that uses the product of two codewords selected from the subcodebooks as the precoder is also presented. Our analysis shows that the perturbation subcodebook is able to compensate for the performance loss from linear receivers. Compared with the Grassmannian codebook, the superiority of the proposed codebook in terms of search complexity as well as throughput/ BER is further confirmed by computer simulations.
Keywords :
MIMO communication; channel coding; error statistics; feedback; precoding; radio receivers; BER; Grassmannian codebook; MIMO channel; bit error rate; feedback precoding system; hierarchical codebook; linear receiver; perturbation subcodebook; two-step codeword selection scheme; Bit error rate; Channel state information; Computer simulation; MIMO; Performance analysis; Performance loss; State feedback; Throughput; Transmitters; Vectors; Precoding, hierarchical codebook, perturbation; subcodebook.;
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE Transactions on
Publisher :
ieee
Conference_Location :
12/1/2008 12:00:00 AM
ISSN :
1536-1276
Type :
jour
DOI :
10.1109/T-WC.2008.071178
Filename :
4712701
Link To Document :
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