全双工协作中继网络的遍历容量分析  

Traversal Capacity Analysis of Full-Duplex Collaborative Relay Networks

作　　者：何潘庆 李伟 李跃 辜馨月 郭秋梅[3] HE Panqing;LI Wei;LI Yue;GU Xinyue;GUO Qiumei(Nuclear Power Institute of China,Chengdu 610005,China;Sichuan CNECARIT Engineering Testing Co. ,Ltd. ,Mianyang 621000,China;School of Information Engineering,Southwest University of Science and Technology,Mianyang 621000,China)

机构地区：[1]中国核动力研究设计院,四川成都610005 [2]四川中核艾瑞特工程检测有限公司,四川绵阳621000 [3]西南科技大学信息学院,四川绵阳621000

出　　处：《自动化仪表》2022年第3期46-49,54,共5页Process Automation Instrumentation

基　　金：国家自然科学基金资助项目(61771410);四川省科技厅基金资助项目(2020YFG0148)。

摘　　要：为了对无线网络开展合理设计,就存在直达通信链路的多节点全双工协作中继网络(FD-CRNs)进行了研究。首先,在同时考虑网络内节点的互干扰与全双工(FD)节点进行自干扰消除后的残余自干扰的情况下,基于Nakagami-m衰落就中继节点,分别采用放大转发与解码转发协议的不同场景对遍历容量展开了分析。接着,通过将求解遍历容量转化为求解接收信干噪比的原点矩,求得遍历容量的近似闭合表达式。最后,通过仿真分析了不同中继转发协议、Nakagami-m衰落参数、残余自干扰、互干扰、节点传输功率等不同因素对遍历容量的影响。仿真结果表明,提升节点的发射功率能一定程度提高遍历容量,解码转发协议抗干扰的性能优于放大转发协议。当其他通信参数一定时,中继节点采用解码转发协议时具有更好的容量性能表现。To develop a rational design for wireless networks,multi-node full duplex(FD)collaborative relay networks(FD-CRNs)with direct communication links are investigated.Firstly,the traversal capacity is analyzed based on Nakagami-m fading for different scenarios of relay nodes using amplify-and-forward and decode-and-forward protocols,considering both the mutual interference of nodes in the network and the residual self-interference of FD nodes after self-interference cancellation.Then,an approximate closed expression for the traversal capacity is obtained by converting the solved traversal capacity into the origin moments of the solved received signal to interference ratio.Finally,the effects of different factors on the traversal capacity,such as different relay forwarding protocols,Nakagami-m fading parameters,residual self-interference,mutual interference,and node transmission power,are analyzed by simulation.The simulation results show that increasing the transmission power of nodes can improve the traversal capacity to a certain extent,and the performance of the decode-and-forward protocol against interference is better than that of the amplify-and-forward protocol.When other communication parameters are certain,the relay nodes have better capacity performance when decode-and-forward protocol is used.

关 键 词：全双工 残余自干扰 互干扰 协作中继网络 遍历容量 Nakagami-m衰落 放大转发 解码转发 

分 类 号：TH-701[机械工程]