TWO-WAY DENOISE-AND-FORWARD NETWORK CODING OPPORTUNISTIC RELAYING AIMING AT MINIMIZING EUCLIDEAN DISTANCE IN MULTI-ACCESS PHASE  

作　　者：Jia Xiangdong Yang Longxiang Shao Shixiang 

机构地区：[1]Wireless Communications Key Lab of Jiangsu Province, Nanjing University of Posts and Telecommunications, Nanjing 210003, China [2]Key Lab of Broadband Wireless Communication and Sensor Network Technology, Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing 210003, China [3]College of Mathematics and Information Science, Northwest Normal University, Lanzhou 730070, China

出　　处：《Journal of Electronics(China)》2011年第4期433-443,共11页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundations of China (No. 61071090,No. 61171093);the Postgraduate Innovation Programs of Scientific Research of Jiangsu Province (CX10B-184Z,CXZZ11_0388);the Project 11KJA510001 and PAPD

摘　　要：To exploit the effect of modulation schemes on the best relay selection,a novel Jointing Modulation schemes max-min criterion(JM-max-min) is proposed firstly for Two-Way De-Noise-and-Forward(DNF) Opportunistic Relaying systems(TW-DNF-OR) by aiming at minimizing the Pairwise Error Probability(PEP) of Multi-Access(MA) phase which dominates the error per-formance of TW-DNF-OR due to the presence of MA interference.The proposed JM-max-min criterion integrates perfectly the minimum distances of constellations and the relay links gains.Then,with the proposed JM-max-min criterion,we analyze the Symbol Error Probabilities(SEPs) of MA phase and BroadCast(BC) phase by using the approximated mathematics analysis,and present the corresponding closed-form expressions to SEPs.The numerical analysis shows,for a given modulations combination at both sources,the TW-DNF-OR systems with the proposed JM-max-min criterion outperform the one with the conventional max-min criterion.To exploit the effect of modulation schemes on the best relay selection,a novel Jointing Modulation schemes max-min criterion（JM-max-min） is proposed firstly for Two-Way De-Noise-and-Forward（DNF） Opportunistic Relaying systems（TW-DNF-OR） by aiming at minimizing the Pairwise Error Probability（PEP） of Multi-Access（MA） phase which dominates the error per-formance of TW-DNF-OR due to the presence of MA interference.The proposed JM-max-min criterion integrates perfectly the minimum distances of constellations and the relay links gains.Then,with the proposed JM-max-min criterion,we analyze the Symbol Error Probabilities（SEPs） of MA phase and BroadCast（BC） phase by using the approximated mathematics analysis,and present the corresponding closed-form expressions to SEPs.The numerical analysis shows,for a given modulations combination at both sources,the TW-DNF-OR systems with the proposed JM-max-min criterion outperform the one with the conventional max-min criterion.

关 键 词：Cooperative communications Opportunistic relaying Network coding Max-min crite-rion 

分 类 号：TN911[电子电信—通信与信息系统]