Fairness-oriented physical layer network coding in cooperative multiple access channels due to MRC and SIC

作     者：CHENG Yu-lun YANG Long-xiang 

作者机构：Jiangsu Key Laboratory of Wireless CommunicationsNanjing University of Posts and Telecommunications Key Laboratory of Broadband Wireless Communication and Sensor Network TechnologyNanjing University of Posts and Telecommunications 

出 版 物：《The Journal of China Universities of Posts and Telecommunications》 (中国邮电高校学报（英文版）)

年 卷 期：2012年第19卷第6期

页      面：45-51页

核心收录：

学科分类：0810[工学-信息与通信工程] 1205[管理学-图书情报与档案管理] 0839[工学-网络空间安全] 08[工学] 081001[工学-通信与信息系统] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundations of China(61071090, 61171093) the Postgraduate Innovation Programs of Jiangsu Scientific Research(CXZZ11_0388,CXLX11_0404) the Jiangsu Province Natural Science Foundation Key Projects(11KJA510001) the National Science and Technology Key Projects(2011ZX03005-004-003) Jiangsu 973 Projects(BK2011027) 

主　　题：cooperative system user fairness simultaneous outage MRC SIC 

摘      要：This paper investigates the impacts of network coding （NC） on user fairness from the network perspective in multiple access channels. Firstly, simultaneous outage is exploited as the metric to evaluate user fairness. To optimize it, a fairness-oriented physical layer NC scheme is proposed, in which users＇ signals are superimposed in specific calculated proportion at relay and then decoded by maximal ratio combination （MRC） and serial interference cancellation （SIC） at destination. Furthermore, the influence of power allocation coefficient error on simultaneous outage is also analyzed to reveal its correlation with user fairness. Simulation results indicate that the proposed scheme can supply approximately equal performance promotion for each cooperation-participated user and outperform those without fairness consideration in terms of the employed metric.