全双工OFDM中继系统的中断性能分析  

Outage Performance Analysis of Full-Duplex OFDM Relay Systems

作　　者：杜瑞[1] 杨文东[2] 蒲晓波[3] 徐信[4] 

机构地区：[1]云南省军区边防4团,云南蒙自661100 [2]解放军理工大学通信工程学院,江苏南京210007 [3]成都军区通信网络技术管理中心,四川成都610011 [4]济南军区通信网络技术管理中心,山东济南250000

出　　处：《军事通信技术》2014年第4期7-12,共6页Journal of Military Communications Technology

摘　　要：OFDM技术具有较高的频谱效率和良好的抗多径干扰能力,得到了广泛的关注和研究。全双工中继技术相比于半双工中继技术其频谱效率提高了一倍,但是当中继工作在全双工模式时,中继同时接收和发送数据,会产生收发自干扰,严重影响了系统的传输性能。将OFDM技术和全双工中继技术结合起来成为了一个非常有前景的研究方向。文章针对全双工OFDM中继系统,讨论了在OFDM和OFDMA两种中继选择方案下系统的中断概率,在推导过程中引入了有效信扰比这一概念,从而推导出两种方案下中断概率的闭式表达,并进行了仿真以验证理论结果。OFDM technology has attracted much attention due to the fact that it has high spectral efficiency and can combat multipath fading.The spectral efficiency of full-duplex relay is twice higher than that of half-duplex relay,but it will cause self-interference due to simultaneous transmission and reception.Combining OFDM with full-duplex relay is a promising topic.A fullduplex OFDM relay system was mainly discussed,and the outage performance of the system under two different relay selection schemes was analyzed.During the derivation of the outage probability,the definition of effective signal-to-interference ratio was brought in.Simulations were carried out to validate the theoretical analysis.

关 键 词：全双工中继 正交频分复用 中断概率 

分 类 号：TN919.3[电子电信—通信与信息系统]