Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:P2
Session:
Number:P2-102
Quantized Precoding Techniques for Spatially Correlated Channels without Correlation Feedback
Myoung-Seok Kim, Myeongcheol Shin, Wonwoo Park, Chungyong Lee,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
This thesis deals with the quantized precoding techniques for spatially correlated MISO (multiple-input single-output) channels. The transformed codebook, which has been proposed recently for correlated channel, has problem of loosing diversity despite using additional feedback for channel correlation matrix. In this thesis, an efficient algorithm to estimate the correlation matrix without additional feedback and also prevent diversity loss is proposed. In the proposed algorithm, the estimation can be done using the codeword selection patterns. In order to estimate and get SNR gain simultaneously, the proposed algorithm uses both transformed codebook and specific forms of IID (independent identically distributed) codebook for estimation, which also prevents diversity loss.