Research on Channel Quantization Algorithm of Time Correlated Channels

Zhenjie FENG  Taiyi ZHANG  Erlin ZENG  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E91-A    No.10    pp.3063-3066
Publication Date: 2008/10/01
Online ISSN: 1745-1337
DOI: 10.1093/ietfec/e91-a.10.3063
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Digital Signal Processing
multiple-antenna,  transmit beamforming,  channel quantization,  time correlation,  

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Focusing on time correlation of real communication channels, a channel quantization algorithm based on finite state vector quantization (FSVQ) is proposed. Firstly channels are partitioned into finite states, then codebooks corresponding to each state are constructed, which are used to quantize channels transferred from corresponding states. Further, the state transition function is designed to ensure the synchronization between transmitter and receiver. The proposed algorithm can achieve improved performance with the same feedback load compared with classical memoryless channel quantizer without consideration of the influence of time correlation. Simulation results verify the effectiveness of the proposed algorithm.