摘要
为分析跳延时发送参考超宽带系统引入协作机制后的性能,建立了该协作系统的一般模型,利用高斯逼近法推导了跳延时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条件误码率,并利用矩生成函数推导了系统误码率的一般表达式和渐近表达式,理论分析与仿真结果表明系统可获得二阶分集增益,误码率性能也有了明显的提高。
In order to analyze the performance of delay-hopped transmitted-reference UWB cooperative communication system, a transmitted-reference UWB cooperative communication model is presented. By using Gaussian approximation method, the conditions BER is derived for the delay-hopped transmitted- reference UWB cooperative communication system under amplify-and- forward, maximum-ratio combining cooperation. Meanwhile by using the moment-generating function, the closed-form SER formulation and the tight SER approximation are explicitly obtained. Simulation results show that the system could achieve fairly good SER performance and second-order diversified gain.
出处
《通信技术》
2013年第11期60-63,共4页
Communications Technology
关键词
协作通信跳延时发送参考超宽带放大转发矩生成函数
cooperative communication
delay - hopped transmitted reference UWB
amplify - and - for-ward
moment-generating function
