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Design of LDPC Codes for Unequal ISI Channels

机译:不等ISI信道的LDPC码设计

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In this paper, we design an irregular low-density parity-check (LDPC) codes for unequal inter-symbol interference channels based on the modified extrinsic information transfer chart. During transmission, each LDPC codeword will be divided and transmitted to the different channels. The aim of this scheme is to avoid transmitting the whole codeword in a high error rate channel. The simulation results show that the proposed code optimized for both PR! and PR2 channels can achieve a 0.2 coding gain over the codes designed specifically for each individual channel. When this simple code is applied to a perpendicular channel with these two targets, the coding gains of the proposed code is about 0.08 dB at the frame error rate of 10-3.
机译:在本文中,我们基于改进的外部信息传递图,为不等号符号间干扰信道设计了不规则的低密度奇偶校验(LDPC)码。在传输期间,每个LDPC码字将被分割并传输到不同的信道。该方案的目的是避免在高误码率信道中发送整个码字。仿真结果表明,所提出的代码均针对PR进行了优化!与PR2通道相比,为每个通道专门设计的代码可以获得0.2的编码增益。当将此简单代码应用于具有这两个目标的垂直通道时,在10 -3 的帧错误率下,所建议代码的编码增益约为0.08 dB。

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