LDPC编译码MATLAB,分别用了比特翻转(Bit-Flipping)译码算法和BP译码算法,绘制信噪比-误码率图像

上传者: yellowyz | 上传时间: 2023-04-27 21:06:18 | 文件大小: 29KB | 文件类型: ZIP
基本达到理论误码率图像,但是性能还不够好,误码率不够理论值那么小,代码有注释,嘎嘎好懂。文件夹中“程序”是BF译码算法,运行main1就行,信噪比我设置为[0:0.5:2],是为了和BP有相同的横坐标,好比较,1-2上误码率比较小,在信噪比为4的时候会有较大的变化,可以根据需要把信噪比改成0-5,程序运行时间比较久,可能需要10分钟左右,同样是个值得优化的点。 解压后直接出现的代码是BP算法,BP算法取对数就是SUM-Product译码算法,运行LDPC_demo.m,信噪比为3,4的时候就没有图像了,所以只设置为0-2,想要大信噪比的同学可以尝试一下把码长变长,但是运行时间会更久。这个程序大概运行10-30分钟,耐心等待~~~有什么问题可以评论区留言咱一起讨论。

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