码正交发送参考超宽带协作性能分析  

Analysis of Code-Orthogonalized Transmitted-Reference Ultra-Wideband Cooperative Communication System

作　　者：周泽文[1] 李铁峰[1] 李红波[1] 曾繁景[1] 

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《信息工程大学学报》2013年第4期423-427,451,共6页Journal of Information Engineering University

基　　金：国家科技重大专项资助项目(2010ZX03006-002);工信部重大专项资助项目(2009ZX03003-003)

摘　　要：将协作技术引入码正交发送参考超宽带系统之中。建立了码正交发送参考超宽带协作模型;采用抽样扩展分析方法,推导了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;通过数值计算分析对比了非协作与协作场景下COTR-UWB系统的误码率性能。仿真结果表明,该协作系统在最佳积分时间下可获得六阶分集增益。最后分析讨论了时间带宽积、脉冲个数以及瞬时信噪比对系统误码率性能的影响。This paper introduces the cooperation technology into the Code-Orthogonalized Transmitted-Reference Uhra-Wideband （COTR-UWB） system. A COTR-UWB cooperative model is first developed. Then based on the sampling expansion approach, a general expression of cooperative SER is derived by using cooperation strategy of amplify-and-forward relaying and maximal-ratio-combi- ning. Additionally, the SER performance of COTR-UWB system is analyzed in non-cooperation and cooperation scenes respectively by using numerical computation. Simulation results show that the co- operative communication system gains six-order diversity under the condition of optimum integration interval. Also discussed are the effects of time-bandwidth product, numbers of impulses and instantaneously received SNR on the system SER performance.

关 键 词：协作通信 码正交发送参考超宽带 放大转发 最大比合并 瞬时信噪比 抽样扩展 

分 类 号：TN911[电子电信—通信与信息系统]