Opportunistic Relaying for Two-Way Relay Transmission with Analog Network Coding
This paper studies the outage performance of a two-way relay transmission, where two user terminals exchange information through a shared relay that exploits analog network coding to deal with the multi-access signals. Starting from some definitions, an exact outage probability of the conventional threenode scenario is derived over frequency-nonselective Rayleigh fading channels. To gain more insight, an approximate expression is also formulated. Following this analysis, opportunistic relaying is considered for multi-relay networks to make a good use of the available diversity degrees of the channel. Then, three significant relay selection strategies, I.e., the max-min, the maxhms and the min-scp policies, are studied and analyzed in terms of outage probability. Simulation experiments are performed and performance comparisons are conducted. The results show that the proposed policies are e.cient and appropriate methods to implement relay selection and can achieve significant performance gains in terms of outage probability across the whole range of signal-to-noise ratio (SNR) as well as the sources?target rates, which validates the studies in this paper.
two-way relay transmission opportunistic relaying analog network coding
Xiaodong Ji Baoyu Zheng Lei Wang Xing Gao
Institute of Signal Processing and Transmission Nanjing Universityof Posts and TelecommunicationsNan National Mobile Communications Research LaboratorySoutheast UniversityNanjing, China 210018 School of Electronics and Information Nantong University Nan Tong, China 226019
国际会议
南京
英文
1-5
2011-11-09（万方平台首次上网日期，不代表论文的发表时间）