Performance of iterative DS-CDMA M-ary demodulation in the presence of synchronization errors

被引：4

作者：

Xiao, P ^{[1
]}

Ström, E ^{[1
]}

机构：

[1] Chalmers Univ Technol, Dept Signals & Syst, Commun Syst Grp, SE-41296 Gothenburg, Sweden

来源：

IEEE VTC 53RD VEHICULAR TECHNOLOGY CONFERENCE, SPRING 2001, VOLS 1-4, PROCEEDINGS | 2001年

关键词：

D O I：

10.1109/VETECS.2001.944985

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The robustness of different interactive schemes for demodulating M-ary orthogonal signaling formats in asynchronous DS-CDMA systems to the synchronization errors is addressed in this paper. The system tender study resembles the uplink of an IS-95 system. The channel is assumed to be a time-varing flat Rayleigh fading channel. Our simulation results show that performance degradation for the considered multi-user detectors increase linearly with synchronization errors and eventually converge to that of conventional matched filter. In order to see the impact of channel estimation on the performance of multi-user detectors, we made some comparisons between non-coherent and coherent variants of the detection algorithms.

引用

页码：1703 / 1707

页数：5