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OFDM程序

于 2022-05-23 发布 文件大小:907.10 kB
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本文通过MATLAB编程实现正交频分复用(OFDM)的系统仿真,系统采用卷积码和交织码级连的差错控制编码。以高斯噪声信道和电力线信道为例,用本仿真系统分别计算出了无差错控制编码和有差错控制编码情况下误码率与信噪比的关系。结果表明,加入差错控制编码使误码率达到10-3时对信噪比的要求有很大减小。系统误码率随信噪比增加以近似二次曲线下降或部分近似二次曲线下降,以不同系数的二次曲线分别进行模拟,可以控制差值在0.005~0.02范围内。

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