一种超宽带模拟合并转发协作通信系统  

An Ultra-wideband Analog Combination and Forward Cooperative Communication System

作　　者：钱慧[1] 余轮[1] 郑海峰[1] 

机构地区：[1]福州大学物理与信息工程学院,福建福州350108

出　　处：《电讯技术》2011年第1期84-88,共5页Telecommunication Engineering

基　　金：福建省自然科学基金资助项目(2009J01286)~~

摘　　要：针对频率选择性衰弱信道下协作通信系统信道估计复杂的问题,提出了一种模拟合并放大转发超宽带(UWB)协作通信方案。该方案在源节点处对发送符号进行实数分布式空时编码并附加传输参考,在中继节点处利用传输参考对多径分量进行模拟合并,从而构建了一种改进型非正交放大转发协作通信系统。仿真结果证明,相对于无协作通信系统,模拟合并转发协作系统无需信道估计就可获得传输性能的有效提升。In allusion to the complexity channel estimation of cooperative communication system over frequencyselective fading channels, a scheme of analog combination and forward ultra- wideband （UWB） cooperative communication is proposed. The transmitting symbol is coded by real space - time code and the transmitted reference is appendded at source node, the multipath components are analog combined by applying the transmitted reference at relay node, then a modified non - orthogonal amplify - and - forward cooperative communication system is construed. The simulation results show that compared to the non - cooperative communication, the transmission ability of analog combination and forward cooperation system can be efficiently improved without channel estimation.

关 键 词：超宽带通信 协作通信 实数分布式空时码 传输参考 非正交放大转发 

分 类 号：TN925[电子电信—通信与信息系统]