参数估计误差对串行干扰抵消性能的影响  

Performance degradation caused by imperfect parameter extraction in serial interference cancellation

作　　者：潘申富[1] 李振东[1] 梁庆林[1] 

机构地区：[1]北京大学电子学系卫星与无线通信实验室,北京100871

出　　处：《电波科学学报》2004年第1期17-20,共4页Chinese Journal of Radio Science

摘　　要：利用复基带信号模型推导了在串行干扰抵消中 ,PSK干扰信号参数估计误差 (包括符号定时误差、载波相位误差、幅度估计误差、误码率 )及信道估计误差与干扰抑制比的关系 ,通过仿真验证其可作为选择具体参数估计算法的重要依据。Based on complex base-band signal model, the performance degradation in serial interference cancellation caused by imperfect parameters extraction of PSK interference signal (such as symbol timing error, carrier phase error, signal amplitude error, symbol error and channel estimation error, etc.) and channel are analyzed. The analysis results are verified by computer simulations.

关 键 词：参数估计 误差 串行干扰 抵消性能 干扰抑制比 CDMA 多用户检测系统 

分 类 号：TN914.53[电子电信—通信与信息系统]