Radio Electronics |
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A simplified MMSE-based iterative receiver for MIMO systems |
Yuan YANG, Hai-lin ZHANG |
State Key Lab of Integrated Services Networks, Xidian University, Xi’an 710071, China; Datang Linktech Infosystem Co., Ltd., Beijing 100191, China |
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Abstract A simplified minimum mean square error (MMSE) detector is proposed for joint detection and decoding of multiple-input multiple-output (MIMO) systems. The matrix inversion lemma and the singular value decomposition (SVD) of the channel matrix are used to simplify the computation of the coefficient of the MMSE filter. Compared to the original MMSE detector, the proposed detector has a much lower computational complexity with only a marginal performance loss. The proposed detector can also be applied to MIMO systems with high order modulations.
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Received: 27 March 2009
Published: 03 September 2009
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