The paper provides detailed computational steps for implementing an iterative serial concatenated convolutional code (SCCC) decoder. These are based on maximum a posteriori probability (MAP) decoding of a single, rate 1/2, recursive, systematic convolutional code, which is reduced to easily implemented equations for forward and backward recursion. In particular, the crucial information exchange between MAP decoders is clarified. Simulation of a rate 1/3 SCCC with memory-2 codes and a coding delay of N=1000 shows a bit error rate of 10/sup -6/ for E/sub b//N/sub 0/=1.5 dB, and gives a typical interleaver gain of N/sup -3/.
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机译：本文提供了实现迭代串行级联卷积码（SCCC）解码器的详细计算步骤。这些基于单个速率1/2递归系统卷积码的最大后验概率（MAP）解码，该码被简化为易于实现的前向和后向递归方程。特别是，阐明了MAP解码器之间的关键信息交换。使用内存2代码和N = 1000的编码延迟对速率1/3 SCCC进行仿真显示，对于E / sub b // N / sub 0 / = 1.5 dB，误码率为10 / sup -6 /给出典型的交织器增益N / sup -3 /。
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