基于RBF神经网络的DS—CDMA多用户检测

RBF based multiuser detection for DS-CDMA

多用户检测技术是CDMA系统抑制多址干扰,克服远近效应的关键技术,采用RBF神经网络作为DS—CDMA系统的多用户检测器,给出在同步高斯信道条件下RBF神经网络多用户检测器原理图,并分析了利用RBF神经网络进行多用户检测的原理,通过仿真实验证明,讨论的RBF神经网络多用户检测器能够得到优于匹配滤波器接收机的误码率检测性能。

Multiuser detection is important for CDMA systems to reduce multiple access interference （MAI） and near - far effect. In this paper, we consider the Radial Basis Function Network （RBFN） as the multiuser detector in DS -CDMA systems. The model of the RBF multiuser detector in AWGN channel is described, and the principle of RBF multiuser detector is analyzed. Simulation results show that the performance of the RBF - based multiuser detector is better than match filter receivers.