摘要
为解决复杂环境中WCDMA长周期扰码识别问题,提出采用独立分量分析结合锁相环技术,在载波未知情况下估计不同用户的扰码序列和信源信息。所提算法,利用OVSF码和扰码叠加序列的帧重复性,建模成单通道盲源分离形式以实现信号分离和扰码估计。仿真结果表明,算法可有效估计其长周期扰码和信息码。
In order to identify the long period scramble code in complex environment,independent component analysis and phase locked loop are proposed to estimate the scramble sequence and signal data with carrier frequency unknown.Based on the frame repetition of scramble code and OVSF code,a new blind source separation model with carrier modulation is constructed.Simulation results show that the proposed method can effectively identify the scrambling sequence of multi-user WCDMA signals and blindly decode the signal.
作者
苗佳佳
沈雷
郭婧婧
韩煜
MIAO Jiajia;SHEN Lei;GUO Jingjing;HAN Yu(School of Communication Engineering,Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China;State Key Lab of Information Control Technology in Communication System of No.36 Research Institute,China Electroncc Technology Corprration,Jiaxing Zhejiang 314001,China)
出处
《杭州电子科技大学学报（自然科学版）》
2018年第3期28-33,共6页
Journal of Hangzhou Dianzi University：Natural Sciences
基金
国家自然科学基金资助项目(61401133)
中国博士后科学基金资助项目(2014M562302)
关键词
宽带码分多址
扰码估计
盲解码
锁相环
wideband code division multiple access
scramble code estimation
blind decode
phase locked loop
