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 |