Joint MMSE vector precoding based on GMD method for MIMO systems

Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, Shanghai Shi, China
IEICE Transactions on Communications (Impact Factor: 0.23). 09/2007; E90B(9). DOI: 10.1093/ietcom/e90-b.9.2617
Source: OAI


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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