摘要： 为了估计多用户宽带码分多址(WCDMA)信号的信源信息,利用阵列天线空域滤波对多用户信号进行分离,提出载波调制WCDMA信号盲解码方法,基于主分量分析并结合锁相环技术,估计不同用户的信源信息。在载波频率未知的情况下,根据宽带码分多址信号中扰码和OVSF码叠加序列的帧重复性进行帧等间隔采样,通过构建载波调制的宽带码分多址信号模型进行盲解码。仿真结果表明,该方法可以对多用户WCDMA信号的信源信息进行有效盲解码。

关键词: 宽带码分多址, 独立分量分析, 主分量分析, 锁相环, 盲解码

Abstract: In order to estimate the source information of multi-user Wideband Code Division Multiple Access(WCDMA) signals,the multi-user signals are separated by array antenna airspace filtering first,and then the Principal Component Analysis(PCA) combined with the Phase Locked Loop(PLL) technology is used to estimate the source information of different users.In the case of unknown carrier frequency,this method utilizes the frame repetition of WCDMA signal scrambling code and OVSF code superposition sequence to construct a WCDMA signal model of the carrier modulation to perform blind decoding.Simulation results show that the method can effectively and blindly decode the source information of multi-user WCDMA signals.

Key words: Wideband Code Division Multiple Access(WCDMA), independent component analysis, Principal Component Analysis(PCA), Phase Locked Loop(PLL), blind decoding

中图分类号: 

• TN911.7