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Linear Dispersion Codes with Limited Feedback
Dan DENG Jin-kang ZHU Ling QIU
IEICE TRANSACTIONS on Communications
Publication Date: 2007/07/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
MIMO, space-time codes, linear dispersion codes (LDCs), limited feedback, Rayleigh channels,
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LDCs system with finite-rate error-free feedback is proposed in this letter. The optimal transmission codeword is selected at the receiver and the codeword index is sent to the transmitter. A simple random search algorithm is introduced for codebook generation. Moreover, the max-min singular value criterion is adopted for codeword selection. Simulation results showed that, with only 3-4 feedback bits, the low-complexity Zero-Forcing receiver can approach the Maximum-Likelihood (ML) performance.