摘要
基于统计分析方法,导出了传统并行干扰消除检测器(PIC)、部分干扰消除检测器(P-PIC)和最小均方误差检测器(MV-PIC)的输出均值和方差.结果表明:与传统PIC检测器比较,P-PIC检测器降低了软判决量的均值和方差的偏差;选择恰当的部分干扰消除系数,可以使MV-PIC的输出均值增大、方差减小、误码性能优于PIC检测器.
Based on the method of statistics, this paper derived the output mean value and variance of conventional parallel interference cancellation （PIC）, partial parallel interference cancellation （P-PIC） and minimum mean-squared error （MV-PIC） detectors for CDMA. The results indicated that the deviations of mean value and variance of the linear decision parameters were reduced by P-PIC compared with PIC. The output mean value was increased and the variance was decreased by choosing suitable partial interference cancellation coefficient for MV-PIC, and its performance of code error is superior to PIC.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2006年第9期881-885,共5页
Journal of University of Science and Technology Beijing
关键词
移动通信系统
并行干扰消除
软判决
最小均方误差
mobile communication system
parallel interference cancellation
linear decision
minimum mean-squared error
