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Joint MMSE Vector Precoding Based on GMD Method for MIMO Systems Feng LIU Ling-ge JIANG Chen HE Publication IEICE TRANSACTIONS on Communications Vol.E90-B No.9 pp.2617-2620 Publication Date: 2007/09/01 Online ISSN: 1745-1345 DOI: 10.1093/ietcom/e90-b.9.2617 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: vector precoding, MMSE, GMD method, MIMO systems, Full Text: PDF(119.6KB)>>
Summary: We propose a geometric mean decomposition (GMD) based vector precoding (VP) for multiple input multiple output (MIMO) systems. Minimum mean square error (MMSE) criterion is used for the joint VP design. The application of GMD method eliminates the imbalance among subchannel gains and obtains a better perturbation vector than the conventional method. We then exploit the extended channel matrix for further performance improvement. Simulation results show the proposed schemes significantly outperform the existing VP schemes. | |||||
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