Turbo乘积码编译码算法研究及ASIC设计.pdf

摘要
Turbo 乘积码（Turbo Product Codes）是一种先进的前向纠错（FEC, Forward
Error Correction）信道编码方式，纠错性能好，编码效率高，同时由于其编码构造
采用了线性分组码，所以译码方法简单，实现复杂度低。Turbo 乘积码已成为信道
编码领域近几年来研究的热点，在无线通信领域有着广泛的应用前景。
本文对 Turbo 乘积码编译码算法进行了详细的讨论和研究，并介绍了编译码器
的 ASIC 设计实现。首先，本文对课题涉及的信道编码理论基础、线性分组码的概
念和线性分组码的译码进行了阐述，形成较完整的信道编码理论体系，为 Turbo
乘积码的研究奠定理论基础。其次，对 Turbo 乘积码编译码原理进行了研究，重点
分析了 Chase 迭代译码算法，讨论了影响译码性能的因素。再次，给出了编译码
器的 ASIC 设计实现方案和验证方案，并对实验验证结果进行了分析。最后，根据
课题研究中遇到的问题，提出了下一步的工作建议和研究方向。
设计的硬件验证工作在 Xilinx 公司 Virtex-II 系列 FPGA 平台上完成，系统级
测试在某遥测系统地面站上完成，按照验证方案对设计进行了具体的实验测试，
对实验结果进行了必要的分析和参数计算。实验结果表明，本课题设计的编译码
器满足预期指标要求。

关键词： 信道编码 Turbo乘积码 迭代译码 SISO ASIC
Abstract
Turbo Product Codes is an advanced FEC channel encoding method, which has
excellent performance and high codes rate. And because of its linear group codes
structure, the decoding method is simple and easy to realize. So the Turbo Product Codes
has become the focus of the channel encoding area, and will be widely applied in
wireless communication.
The paper makes an elaborate study of the encoding and decoding algorithm for
Turbo Product Codes, and introduces the ASIC design of the encoder & decoder. Firstly,
through analyzing the related channel encoding theory, with studying the concept and
decode of linear codes, the principle and processes of Channel Encoding are
systematically investigated, all of these formed a quite complete channel coding
theoretical system and lay a theoretical foundation for the further study for the Turbo
Product Codes. Secondly, we did a research of the principle of Turbo Product Codes,
and discussed the factors which may have effect on the performance of TPC
described the Chase iterative decoding algorithm. Thirdly, the
whole schemes of TPC coding ASIC realization and verification are introduced and also
the experiment verification