摘要
本文首先对TPC码的编码原理和Pyndiah的软输入软输出译码算法进行了详细地研究,通过对软输出递推式和调节系数的改进,改善了译码性能,提出并引入了迭代停止准则,通过统计信息证明了它在减少迭代译码时延方面的有效性;最后,对TPC码作为信道内编码在数字视频传输系统中的应用方案及其性能仿真结果进行了分析评估。
In this paper the TPC encoding theory and Pyndiah＇s SISO decoding algorithm are introduced. An iterative algorithm for TPC decoding is analyzed, and a hard decision rule is introduced to control the termination of the iterative process to reduce the time delay in decoding. An application example of TPC code in digital video transmission system is also presented.
出处
《自动化技术与应用》
2007年第12期43-46,共4页
Techniques of Automation and Applications
