基于高斯逼近的码正交发送参考超宽带协作系统性能分析  

COTR-UWB Cooperative Performance Analysis Based on Gaussian Approximation Approach

作　　者：周泽文[1] 李红波[1] 李铁峰[1] 曾繁景[1] 

机构地区：[1]信息工程大学,河南郑州450002

出　　处：《信息与控制》2014年第2期159-164,170,共7页Information and Control

基　　金：国家科技重大专项(2009ZX03006-008);工信部重大专项(2009ZX03003-003)

摘　　要：为分析码正交发送参考超宽带的协作性能,建立了码正交发送参考超宽带协作模型.给出非协作下高斯Q函数形式的误码率公式.以三节点协作模型为基础,采用高斯逼近的分析方法,推导出码正交发送参考超宽带系统在放大转发、最大比合并协作方式下的误码率一般表达式,并对理论结果进行了数值分析.仿真结果表明,协作下的码正交发送参考超宽带系统获得了多阶分集增益.分析讨论了时间带宽积、脉冲个数及瞬时信噪比对误码率性能的影响.To analyze the performance of a code-orthogonalized transmitted-reference ultra-wideband（ COTRUWB） cooperative system,a cooperation model of COTR-UWB is proposed.Gaussian Q-function is invoked to derive the noncooperative symbol error rate（ SER）.Based on the three-node model,which uses amplifyand-forward relaying and maximal-ratio-combining as a cooperation strategy,Gaussian approximation is adopted to deduce a general expression of cooperative SER.Numerical analyses illustrate the theoretical results.Simulation results show that the cooperative communication system gains multiorder diversity.The effects of time-bandwidth,impulses,and instantaneous received SNR on the SER performance are also discussed.

关 键 词：协作通信 码正交发送参考超宽带(COTR-UWB) 放大转发(AF) 最大比合并(MRC) 高斯逼近 

分 类 号：TN911[电子电信—通信与信息系统]