Linear Dispersion Codes with Limited Feedback

Dan DENG  Jin-kang ZHU  Ling QIU  

IEICE TRANSACTIONS on Communications   Vol.E90-B   No.7   pp.1876-1879
Publication Date: 2007/07/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.7.1876
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
MIMO,  space-time codes,  linear dispersion codes (LDCs),  limited feedback,  Rayleigh channels,  

Full Text: PDF(185.2KB)>>
Buy this Article

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.