首页 | 本学科首页   官方微博 | 高级检索  
     检索      

一种LOG-MAP算法的改进迭代实现及其结构
引用本文:周亮.一种LOG-MAP算法的改进迭代实现及其结构[J].电子科技大学学报(社会科学版),2003(5).
作者姓名:周亮
作者单位:电子科技大学通信抗干扰技术国家级重点实验室 成都
摘    要:对LOG-MAP算法进行了可并发性分析,利用可以完整接收一个N长符号传输帧的条件以及正向迭代和反向迭代中的固有对称性质,提出了LOG-MAP算法的一种修正迭代实现算法,其正向和反向迭代计算次数只需码长N的一半,故比标准LOG-MAP算法提高了一倍的处理速度,且没有空间开销的增加、同时,根据修正的迭代实现算法给出了相应的适于FPGA实现的双总线硬件结构的实现方案。

关 键 词:最大后验概率  对数最大后验概率  迭代算法  双总线结构

A New Iterative Implementation and Architecture for LOG-MAP Algorithm
Zhou Liang.A New Iterative Implementation and Architecture for LOG-MAP Algorithm[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2003(5).
Authors:Zhou Liang
Abstract:This paper analyzes the parallel mechanism of logarithmic maximum a posteriori algorithm and presents a modified iterative procedure by the use of the possibility of receiving the full N-symbols frame and the symmtry being inherent in the forward-backward iteration. The procedure achieves a double decoding speed faster than that of the conventional one without the increase of RAM cost because the number of iterations is limited to a half of the code-length N. Also according to the modified algorithm this paper proposes a hardware scheme characterized by a two-busses architecture suitable for implementing with FPGA.
Keywords:maximum a posteriori  logarithmic maximum a posteriori  iterative algorithm  two-busses architecture
本文献已被 CNKI 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号