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多用户MIMO系统中各种波束成型预编码性能比较(ZF,BD,MMSE,SLNR,MF,SVD)

于 2023-08-15 发布 文件大小:206.75 kB
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代码说明:

应用背景波束成形是MIMO 关键技术之一。多用户MIMO 系统中存在多用户干扰和多天线干扰,波束成形技术能有效抑制此类干扰,在信道中同时传播多路并行数据流,实现分集增益和复用增益。本代码用于测试多用户MIMO通信系统中各种波束成型预编码合速率、误码率性能比较。关键技术 多用户MIMO通信系统中各种波束成型预编码算法合速率、误码率性能比较。我们研究了多种经典的波束成形方法,包括奇异值分解(Singular value decomposition, SVD)、块对角化(Block diagonalization, BD)、迫零(Zero forcing,ZF )、匹配滤波( Matched filtering, MF )、最大化信泄噪比( Maximum signal-to-leakage-and-noise, Max-SLNR ) 和最小化均方误差( Minimum mean-squared error, MMSE)。通过仿真,我们得出结论:在传统的多用户MIMO系统下, 采用各种波束成形方法的和速率性能优劣排序如下:SVD>Max-SLNR>MMSE>BD>ZF>MF ;  误码率性能优劣排序如下:SVD>MMSE>Max-SLNR>BD>ZF>MF。

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