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| Minimum Mean Square Error Non-linear Transceiver Design Based on Imperfect Channel State Information |
| GENG Hui-1, HE Di-2 |
| (1. College of Information Engineering, Shanghai Maritime University, Shanghai 201306, China; 2. School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract A design method for nonlinear transceiver with Tomlinson-Harashima precoding(THP) structure was proposed based on minimum mean square error (MSE) criterion, when the transceiver knows the imperfect channel state information (CSI) for multiple-input multiple-output (MIMO) system. The MSE is derived firstly, and then transformed as the function of only one variable being precoding matrix. By minimizing the lower bound of MSE using optimization and matrix theory, the optimal precoding matrix and the closed-form of the lower bound are obtained, so that the total non-linear transceiver matrices are solved. The simulation results show that the proposed method outperforms the existing linear transceiver and the classic THP transceiver.
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Received: 19 November 2011
Published: 30 November 2012
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