標題: Model-Based Channel Estimation and Codeword Selection for Correlated MIMO Channels
作者: Cheng, Chien-Chun
Chen, Yen-Chih
Su, Yu T.
Sari, Hikmet
電機工程學系
Department of Electrical and Computer Engineering
公開日期: 2012
摘要: For a closed loop MIMO system to provide outstanding performance, the receiver needs to feedback accurate channel state information, which in turn requires a large codebook size. In this paper, we present a new codeword selection scheme based on a model-based channel estimator. Our scheme performs simultaneous channel estimation and codeword selection by exploiting the structures of the associated MIMO spatial channel and the codebook used. For a DFT-based codebook with arbitrary size, only a quantization operation is needed to select a proper codeword in a correlated fading environment. Using industry-approved standard channel models in simulating the system performance, we show that our low-complexity codeword selection scheme does outperform the scheme based on the conventional least-square estimator.
URI: http://hdl.handle.net/11536/21979
ISBN: 978-1-4673-0971-4
ISSN: 2325-3789
期刊: 2012 IEEE 13TH INTERNATIONAL WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS (SPAWC)
起始頁: 540
結束頁: 544
顯示於類別:會議論文