导频符号辅助干扰删除多用户检测器的研究

A Novel CDMA Multiuser Receiver with Pilot Symbol Aided Interference Cancellation

根据宽带码分多址（ ＷＣＤＭＡ） 系统的特点，提出并分析了一种导频符号辅助干扰删除多用户检测器（ＰＳＡＩＣ），分析结果表明，该方法充分利用了ＷＣＤＭＡ系统中的帧结构，在不增加物理信道的情况下，实现接收信号的相干解调，并与多址干扰删除器相连，可以大大提高系统的性能，增加系统的容量，当干扰删除器的级数为２ 时，其性能有较大的改善。

A new type of interference cancellation multiuser receiver with pilot symbol aided coherent demodulation method is proposed and analyzed.According to our theoretical analysis and numerical analysis,the multiuser access interference is canceled out from the baseband received signal.This new method makes full use of the frame structure of WCDMA,without adding new pilot channel,the coherent demodulation can be obtained and it is integrated with the multiuser receiver.The theoretical analysies also prove that this method can improve the system performance greatly.The results also demonstrate that substantial capacity improvements can be obtained with successive interference canceller whose stage is 2.