Experimental full-duplex amplify-and-forward relay scheme for OFDM with power gain control  

作　　者：Pu Yang Xiang-Gen Xia Qingyue Qu Yi Liu 

机构地区：[1]The State Key Laboratory of Integrated Service Network,Xidian University,Xian 710071,China [2]The Department of Electrical and Computer Engineering,University of Delaware,Newark DE 19716,USA

出　　处：《Journal of Information and Intelligence》2024年第5期375-387,共13页信息与智能学报（英文）

基　　金：supported in part by the National Key R&D Program of China(2021YFA0716500);the National 111 Project(B08038).

摘　　要：The fundamental challenges for full-duplex(FD)relay networks are the self-interference cancellation(SIC)and the cooperative transmission design at the relay.This paper presents a practical amplify-and-forward(AF)FD one-way relay scheme for orthogonal frequency division multiplexing(OFDM)transmission with multi-domain SIC.It is found that the residual self-interference(SI)signals at the relay can be regarded as an equivalent multipath model.The effects of the residual sI at the relay are incorporated into the equivalent end-to-end channel model,and the inter-block interference can be removed at the destination by using cyclic prefix(CP)protection.Based on the equivalent multipath model,we present a solution for optimizing the amplification factor on the performance of signal-to-interference-plus-noise ratio(SINR)when the equivalent multipath length is longer than the CP.Furthermore,a practical one way FD relay network with 3 nodes is built and measured.The simulation and measured results verify the superior performance of the proposed scheme.

关 键 词：Full-duplex AMPLIFY-AND-FORWARD Gain control Self-interference cancellation 

分 类 号：TN925[电子电信—通信与信息系统]