STBC——OFDM matlab
本程序是2*2的OFDM在模拟瑞利多径衰落下的仿真程序。
主程序为：SDMA-OFDM_System_program.m
导频：采用的是梳状的正交导频。
交织：最基本的行变列，列变行的交织。
编码：卷积编码。
调制：4QAM调制。
译码：维比特译码。
信道估计：信道估计采用的是基于LS算法和MMSE算法的信道估计。
仿真结果图：前两个图分别为在不同信噪比下，两个接收信道的归一下相对误差。
图三为解映射后的误码率随信噪比变化图，和经过解交织、解卷积进行向前纠错后的整体误码率。
辅助仿真程序：OFDM_SIM.m为多载波的OFDM程序。程序关键部分都已进行了中文注释。
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