Research on Approximated Log-MAP Algorithm

摘要：

This paper proposes an approximate calculation for correction function of Log-MAP Algorithm and obtains a well turbo decoding in AWGN channel. The algorithm mainly uses the method of segmenting and fitting for correction function by spline function. The proposed method has solved the difficulties and obstacles resulting from inaccessible calculation of correction function with exponential and logarithm computations. It shows that error correction performance of turbo decoder with the interpolation function to calculate the correction function is the same as that with Log-MAP algorithm and the former algorithm complexity is much obviously lower than the latter.

关键词： Turbo codes MAP algorithm Quadratic spline functions Hermile interpolation

作者: Jianyi Wang Gang Bi

作者单位: Dept of Information Science & Electronic Engineering Zhejiang University Hangzhou 310027 China School of Information & Electronic Engineering Zhejiang University City College Hangzhou 310015 Chin

会议类型: 国际会议

会议名称: The 2nd IEEE International Conference on Advanced Computer Control(第二届先进计算机控制国际会议 ICACC 2010)

会议地点: 沈阳

会议语种:英文

页码: 537-541

在线出版日期: 2010-03-27（万方平台首次上网日期，不代表论文的发表时间）