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通过 matlab ldpc 码生成的 LDPC 码

于 2022-05-13 发布 文件大小:578.29 kB
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低密度奇偶校验 (码 LDPC) 编码是光通信相比单载波到合适的编码的调制技术,它具有更强的 (CD) 色散和偏振模色散 (PMD)。最近,出现了不少实验示范使用的 ldpc 码编码、 相干光 OFDM (CO-OFDM) 高速长途传输。然而,CO OFDM 是容易引起激光发射机和接收机的线性相位噪声本地振荡器。在频率域,LPN 会导致公共相位误差 (CPE) 和载波间干扰 (ICI)。卜内门可以近似为加性白高斯噪声 (AWGN) 和激光线宽是小的时候是可以忽略不计。CPE 估计提出了导频子载波或导频制。

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