基于nRF905的协作分集实验研究  

A Cooperative Diversity Experiment Based on nRF905

作　　者：刘立芳[1] 吴长奇[1] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004

出　　处：《无线电通信技术》2010年第4期24-26,共3页Radio Communications Technology

摘　　要：无线信道衰落特性是影响信道容量和传输质量的关键因素,协作分集技术允许一组无线终端互相中继信号,形成虚拟天线阵列,实现空间分集,进而得到相应的分集增益。针对不同的协作方法进行比较,设计协作实验系统,选择易于实现的解码前传协议,在STC5410单片机和nRF905的硬件环境下完成实验,并参考室内路径损耗模型对实验结果进行了理论分析,实验结果表明该协议可以减小系统中断概率。Fading is the key factor that affects the wireless channel capacity and transmission quality.Cooperative diversity is a new spatial diversity technology,which enables multiple users to share their antennas and relay signals,forms a virtual antenna array to realize spatial diversity and achieves the corresponding diversity gain.Different cooperative protocols are compared,an experiment system is designed,and a decoding and forward protocol easy for implementation is selected.A cooperative diversity experiment is conducted under the conditions of STC5410 and nRF905 hardware environment.The experimental results are analyzed theoretically based on the Keenan-Motley model.And the results show that the protocol reduces the outage probability of system.

关 键 词：协作分集 解码前传 NRF905 中断概率 

分 类 号：TN92[电子电信—通信与信息系统]