一种改进的SISO多用户检测算法  

Enhanced Soft-Input Soft-Output Multiuser Detection Algorithm

作　　者：梅中辉[1] 殷玮玮[1] 吴乐南[1] 

机构地区：[1]东南大学无线电工程系,江苏南京210096

出　　处：《应用科学学报》2006年第5期469-473,共5页Journal of Applied Sciences

基　　金：国家自然科学基金资助项目(60472054)

摘　　要：根据信道译码器所提供的发送比特的先验信息,对数据联合算法(PDA)进行了改进,在仅有较小性能损失的前提下,进一步降低了PDA算法的计算复杂度.The iterative muhiuser detector is made up by a soft-input soft-output （SISO） muhiuser detector concatenated with a SISO channel decoder. The computational complexity of the optimal SISO algorithm grows exponentially with the number of users, so it can not be well applied to the system with large number of active users. The probabilistic data association （PDA） algorithm is a novel SISO multiuser detection algorithm, which has a good performance approximating to that of the optimal algorithm and low computational complexity of order 0 （K^3）. In this paper, we make an improvement for the PDA algorithm to further reduce the computational complexity of the PDA algorithm with just a small loss in performance.

关 键 词：PDA算法 SISO多用户检测器 多址干扰 

分 类 号：TN914[电子电信—通信与信息系统]