一种CDMA正交自适应RAKE接收机

Orthogonal Adaptive RAKE Receiver for CDMA Wireless System

针对实际的CDMA无线通信系统,基于空域信号处理领域的Frost波束成形技术,设计了一种正交自适应Frost-RAKE接收机。与LMMSE算法相比,二者复杂度相当,但仿真结果表明,作者设计的Frost-RAKE接收机,其误码接收性能更为优越。同时Frost-RAKE接收机中引入了约束条件,避免了LMMSE算法的收敛慢、收敛步长不确定等问题,更易于在实际系统中应用。

Based on Frost beamformer, an orthogonal adaptive Frost-RAKE receiver for CDMA wireless communication system is designed, in which constraints is applied, solving problems of slow convergence, uncertainty of step size in LMMSE algorithm. Moreover, which brings about improved performance of BER（Bits Error Rate）.