Efficient video transmission over correlated Nakagami fading channels for IS-95 CDMA systems

被引：0

作者：

Chan, Norman H.L. ^{[1
]}

Mathiopoulos, P.Takis ^{[1
]}

机构：

[1] Univ of British Columbia, Vancouver, Canada

来源：

IEEE Vehicular Technology Conference | 1999年 / 1卷

关键词：

Communication channels (information theory) - Direct sequence systems - Fading (radio) - Radio links - Radio receivers - Standards - Video signal processing;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

This paper deals with the problem of efficient transmission of video signals over generalized fading channels using direct sequence-spread spectrum (DS-SS) systems. We first propose a modified version of the H.263 video codec which results in improvement of average video and frame performance. Using a coherent DS-CDMA system based upon the IS-95 standard, we investigate the performance of the proposed video codec over frequency-selective, correlated Nakagami fading forward-link channels employing a RAKE receiver. A variety of performance evaluation results, both in single-cell and multiple-cell environment, are presented for different number of resolving paths and signal propagation characteristics, as well as for the presence of channel estimation errors.

引用

页码：427 / 432