On the block error rate performance of spatially coupled LDPC codes for streaming applications
On the block error rate performance of spatially coupled LDPC codes for streaming applications
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DOI：
10.1109/itw.2016.7606831
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发表时间：
2016-09
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影响因子：
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通讯作者：
David G. M. Mitchell;A. E. Pusane;M. Lentmaier;D. Costello
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文献类型：
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作者：
David G. M. Mitchell;A. E. Pusane;M. Lentmaier;D. Costello
在本文中，我们研究了空间耦合低密度奇偶校验（SC-LDPC）码的误块率（BLER）性能使用滑动窗口解码器适合于流应用。先前对SC-LDPC码的研究主要集中在整个码长上的误比特率（BER）性能或误帧率（FER）性能。在这里，我们考虑基于原型图的结构的SC-LDPC码，其中窗口解码器连续输出块在流的方式，我们检查与这些块相关的误比特率。我们开始通过以SC-LDPC码的总约束长度保持恒定的方式改变块大小和耦合宽度来检查原模图设计对流式传输BLER的影响。接下来，我们研究了块大小和耦合宽度的BLER缩放行为。最后，我们考虑了采用外码来保护块的效果，使得少量的残留错误可以由外码纠正。仿真结果的加性白色高斯噪声信道（AWGNC）和LDPC分组码（LDPC-BC）的比较。
In this paper, we study the block error rate (BLER) performance of spatially coupled low-density parity-check (SC-LDPC) codes using a sliding window decoder suited for streaming applications. Previous studies of SC-LDPC have focused on the bit error rate (BER) performance or the frame error rate (FER) performance over the entire length of the code. Here, we consider protograph-based constructions of SC-LDPC codes in which a window decoder continuously outputs blocks in a streaming fashion, and we examine the BLER associated with these blocks. We begin by examining the effect of protograph design on the streaming BLER by varying the block size and the coupling width in such a way that the overall constraint length of the SC-LDPC code remains constant. Next, we investigate the BLER scaling behavior with block size and coupling width. Lastly, we consider the effect of employing an outer code to protect blocks, so that small numbers of residual errors can be corrected by the outer code. Simulation results for the additive white Gaussian noise channel (AWGNC) are included and comparisons are made to LDPC block codes (LDPC-BCs).