Synchronization algorithms for iterative demodulated M-ary DS-CDMA systems

被引：0

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：

GLOBECOM '01: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-6 | 2001年

关键词：

D O I：

暂无

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, we developed several algorithms to combat the impact of synchronization errors on demodulating Mary orthogonal signaling formats in asynchronous DS-CDMA systems. The system under study resembles the uplink of an IS-95 system. The channel is assumed to be a time-varing flat Rayleigh-fading channel. Investigation shows that synchronization errors severely deteriorate the performance of multi-user detectors. We proposed an adaptive algorithm to estimate the errors in synchronization. Based on this information, remedial actions are taken to alleviate the performance degradation caused by sampling the received signals at the incorrect timing. Simulation results show considerable capacity gains when the proposed algorithms are performed to erroneously sampled signals.

引用

页码：1371 / 1375

页数：5