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中文摘要：
针对多输入-多输出（MIMO）通信系统提出了一种基于几何平均分解（GMD）的矢量预编码（VP）设计.该设计是基于THP（Tomlinson-Harashima Precoding）技术的GMD收发机的推广形式.基于GMD方法的联合收发处理构建了等对角的上三角信道,消除了子信道增益间的不平衡.给出了基于迫零（ZF）准则的预编码方案,利用扩展信道得到基于最小均方误差（MMSE）准则的方案.仿真结果表明,该方案具有比现有VP和GMD THP收发机更好的性能.
英文摘要：
A geometric mean decomposition （GMD） based vector precoding （VP） for multiple input multipie output （MIMO） systems was proposed. It is in fact a generalized form of the GMI） transceiver based on Tomlinson Harashima precoding （THP）. The joint transmitter and receiver processing based on GMD method constructs an equal diagonal upper triangular channel, which eliminates the imbalance among subchannel gains. The VP design with zero forcing （ZF） criterion was proposed, and the extended channel was exploited to obtain the minimum mean square error （MMSE） approach. The simulation results show that the proposed transceiver outperforms the existing VP and GMD THP scheme.
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