判决反馈变步长盲自适应多用户检测

Blind Adaptive Multiuser Detection with Decision Feedback of Variable Step Size

多用户干扰是影响码分多址系统性能的主要因素之一 .基于判决反馈原理 ,本文提出一种变步长盲自适应多用户检测算法 ,以抵消多址干扰 .理论分析和数值模拟表明该算法的收敛性能和误码性能均好于MOE检测器 .

Multiple access interference (MAI) is one of the major impairments on the performance of CDMA systems.On the basis of decision feedback theory we propose a new blind adaptive multiuser detector with variable step size for canceling interference.Theoretical analysis and numerical simulation show that the convergence performance and symbol error performance of the new algorithm are better than those of the MOE detector.