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DAVINCI Non-Binary LDPC codes: Performance and complexity assessment

机译:DAVINCI非二进制LDPC代码:性能和复杂性评估

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Non-Binary Low Density Parity Check (NB-LDPC) codes are expected to reduce the performance gap between binary LDPC and Turbo Codes for both short and medium length codewords, retaining in both cases the best of each. This paper presents the performance evaluation of NB-LDPC when compared to state-of-art channel coding techniques, namely Convolutional Turbo Codes (CTC) and Quasi-Cyclic LDPC. The performance evaluation is twofold: first at the link level and then at system level. In both analyses, it has been shown that the NB-LDPC codes outperform the benchmark codes giving a Signal to Noise Ratio gain up to 0.5 dB and improving the average throughput 5%. Besides, a complexity analysis is also provided for NB-LDPC showing that, using a low complexity decoder, the complexity is approximately one order of magnitude above that required in case of CTC or QC-LDPC.
机译:对于中短码字,非二进制低密度奇偶校验(NB-LDPC)码有望减少二进制LDPC码和Turbo码之间的性能差距,在两种情况下都将保持最佳状态。本文介绍了NB-LDPC与最新的信道编码技术(即卷积Turbo码(CTC)和准循环LDPC)相比的性能评估。性能评估是双重的:首先在链接级别,然后在系统级别。在这两种分析中,已经表明NB-LDPC码的性能优于基准码,信噪比增益高达0.5 dB,平均吞吐量提高了5%。此外,还提供了针对NB-LDPC的复杂度分析,该分析表明,使用低复杂度解码器,复杂度大约比CTC或QC-LDPC情况下所需的复杂度高一个数量级。

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