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2X2 MIMO迫零

于 2022-08-08 发布 文件大小:1.51 kB
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脚本用于计算BER为BPSK调制在瑞利衰落信道,2 TX,2Rx的MIMO信道迫零均衡Y = HX+ N,其中y是接收到的向量,H是瑞利信道矩阵,x被传送的符号,n是白高斯噪声。ZF解调:选择矩阵W,使得WH= I,即Wy的= WHX+ Wn的 => Wy的= IX + Wn的通过数学计算,可以证明,W = INV(H * H)。(H*),即使关对角线项=0其中*是hermition。现在,硬判决用于回收符号和理论和实际的BER被绘制在半对数坐标轴。缺点:在方程Wy的= IX + Wn的,人们可以看到噪声是越来越放大。这背后是低BER相比,MMSE和ML解码的原因。

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