DocumentCode :
3417726
Title :
Kerdock codes for limited feedback MIMO systems
Author :
Inoue, Takao ; Heath, Robert W., Jr.
Author_Institution :
Wireless Networking & Commun. Group, Texas Univ., Austin, TX
fYear :
2008
fDate :
March 31 2008-April 4 2008
Firstpage :
3113
Lastpage :
3116
Abstract :
A codebook based limited feedback strategy is a practical way to obtain partial channel state information at the transmitter in precoded multiple-input multiple-output (MIMO) wireless systems. Construction of conventional codebooks, such as Grassmannian and Fourier codebooks, relies on nonlinear search and iterative algorithms which often does not exhibit structure to ease storage or online search computation. Furthermore, multiple codebooks are needed to support beamforming and spatial multiplexing. In this paper, we propose a new codebook design based on Kerdock codes and mutually unbiased bases which enjoys performance similar to previously known codebooks. The proposed Kerdock codebook with quaternary alphabet has systematic construction, reduced storage, and reduced online search computation. Special structure in the codebook is used to derive a spatial multiplexing codebook from multiple columns of the beamforming codebook resulting in further storage reduction.
Keywords :
MIMO communication; codes; multiplexing; precoding; Fourier codebook; Grassmannian codebook; Kerdock codes; limited feedback MIMO systems; multiple-input multiple-output wireless systems; partial channel state information; precoding; quaternary alphabet; reduced online search computation; reduced storage; spatial multiplexing codebook; Algorithm design and analysis; Array signal processing; Channel state information; Discrete Fourier transforms; Iterative algorithms; MIMO; Quadrature amplitude modulation; Quantization; State feedback; Transmitters; Array signal processing; MIMO systems; codes; feedback communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
Conference_Location :
Las Vegas, NV
ISSN :
1520-6149
Print_ISBN :
978-1-4244-1483-3
Electronic_ISBN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2008.4518309
Filename :
4518309
Link To Document :
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