【摘要】 首先对 IEEE 80 2 .1 6标准进行简要介绍 ,接着阐述卷积 Turbo码的编译码原理 ,在此基础上给出了 Turbo码的 log_ MAP算法 ,最后讨论 Turbo码实现过程中影响译码性能的4个关键问题更多还原

【Abstract】 At first, IEEE 802.16 standard is introduced briefly, then the encoding and decoding principle of convolutional Turbo code is depicted. As decoding algorithm is concerned, log_MAP algorithm is selected due to some considerations on implements on the platform of DSP. At the end, 4 key issues are discussed that would make difference to decoding performance.更多还原