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）
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。
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