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发射端线性预编码技术可以简化接收机的复杂度。文中提出并研究了将该技术用于反映视距传输环境的多输入多输出(MIMO)系统,对比分析了不同线性预编码器在赖斯信道下的性能表现。理论和仿真分析表明,几种线性发射预编码器与对应的接收滤波器具有相似的最小均方误差(MSE)性能,且在不同赖斯因子情况下,发射端维纳预编码器都是最优的。
Transmitter linear precoding techniques can simplify receiver complexity. In this paper, a multi-input multi-output (MIMO) system using this technique to reflect the line-of-sight transmission environment is proposed and studied. The performances of different linear precoders under the Rice channel are compared and analyzed. Theoretical and simulation analysis shows that several linear transmit precoders have similar minimum mean square error (MSE) performance with the corresponding receive filter, and the transmit side Wiener precoders are the best under different Rice factors Excellent.