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Conference Papers Year : 2012

Model-based channel estimation and codeword selection for correlated MIMO channels

Abstract

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.
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Dates and versions

hal-00746824 , version 1 (29-10-2012)

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Cite

Chien-Chun Cheng, Yen-Chih Chen, Y.T. Su, Hikmet Sari. Model-based channel estimation and codeword selection for correlated MIMO channels. 2012 IEEE 13th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Jun 2012, Cesme, Turkey. pp.540 - 544, ⟨10.1109/SPAWC.2012.6292967⟩. ⟨hal-00746824⟩
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