基于协作分集的HAPS应急通信系统性能研究  

Performance Research of Emergency Communication System Based on Cooperative Diversity via HAPS

作　　者：霍辰杰[1] 陈树新[1] 吴昊[1] 张衡阳[1] 

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077

出　　处：《电视技术》2013年第7期91-93,170,共4页Video Engineering

基　　金：国家自然科学基金项目(61202490);航空科学基金联合项目(20095596016);陕西省自然科学基金项目(2010JQ8010);学院科研创新基金项目(DYCX1006);2011年空军大学信息与导航学院研究生创新基金项目

摘　　要：基于协作分集技术,提出一种发射功率受限的多用户双天线协作应急通信系统,理论分析了该系统和多用户单天线协作系统在高信噪比条件下能够达到的最大分集增益,仿真研究了不同HAPS雨衰场景下该系统和传统系统的误码性能。研究结果表明:该系统能够克服传统系统在高信噪比出现的"地板效应",在10-3误码条件下取得2～3 dB的性能增益,与理论研究结果吻合。A cooperative emergency communication system whose transmit power is limited for multi-users each with double antennas is presented based on techniques of cooperative diversity. The maximum diversity gains of both the proposed system and the traditional cooperative system for single-antenna multi- users in high SNR are analyzed theoretically. And a simulation for the error performances of both proposed and traditional systems via different HAPS scene of rain attenuation is made. The research results show that the proposed system can overcome the ＂flooring effect＂ caused in traditional system in high SNR, and the proposed system obtain 2-3 dB performance gain when the error rate is 10-3 , which can meet the results of the theoretical research.

关 键 词：协作分集 HAPS通信 应急通信 

分 类 号：TN927[电子电信—通信与信息系统]