WCDMA体制卫星通信系统抗衰落技术研究  

Study on Anti-fading Technology in WCDMA Satellite Communication System

作　　者：庄云胜[1] 王力男[1] 孙凯[2] 

机构地区：[1]中国电子科技集团公司第五十四研究所 [2]中国人民解放军63756部队

出　　处：《无线电工程》2013年第3期27-29,共3页Radio Engineering

摘　　要：卫星通信是重要的现代通信技术之一,宽带码分多址(Wideband Code Division Multiple Access,WCDMA)卫星通信系统是当前卫星通信界的研究热点。通过比较和分析陆地移动信道和地球静止轨道(GEO)卫星信道的差异,研究了WCDMA的抗干扰技术在GEO卫星通信中的适应性问题。针对GEO卫星信道慢衰落、长相干时间和长时延的特点,在功率控制、交织方式和帧结构设计3个方面提出了改进方案。Satellite communication is one of the important communication technologies. Recently,WCDMA satellite communication systems become a main research field of satellite communication technologies. This paper analyzes the differences between terrestrial mobile channel and GEO satellite channel, studies the possible applicability of the WCDMA anti-fading technology to GEO satellite communication. As for the characteristics of GEO satellite channel in terms of slow fading,large delay and long coherence time, some improvements in interleaving design.Dower control and frame structure are nronosed.

关 键 词：WCDMA 卫星通信 信道衰落 相干时间 

分 类 号：TN391.4[电子电信—物理电子学]