江苏大学学报（自然科学版）2011，Vol.32Issue(6)：706-709,714,5.DOI:10.3969/j.issn.1671-7775.2011.06.017
结合波束形成的双向中继选择策略
Two-way relay selection strategy combined with beamforming
摘要
Abstract
To enhance transmission performance of multi-antenna source and multiple single-antenna twoway relay communication systems with decreased signal processing complexity, an optimal relay selection combined with beamforming scheme was proposed. The relay selection was performed by only local channel state information in a distributed way, and the transmitting and receiving beamforming vectors were realized according to two sources by maximum-ratio-transmission (MRT) and maximum-ratio-combining ( MRC) rules. Based on the channel statistical property, the outage probability performance of the new scheme was analyzed in Rayleigh fading channels to deduce the closed expression of the system outage probability. The new scheme was simulated to compare with other five schemes. The results show that outage probability of the new transmission scheme is obviously better than those based on the path, sum rate, symbol error ratio, opportunistic single relay selection and equal-power multiple relays transmission. The system outage probability of the new scheme is improved with the increase of relay and antenna number, since the multi-relay and multi-antenna diversities can be fully utilized.关键词
中继系统/波束形成/瑞利衰落/分集/最大比发送/中断概率Key words
relay system/beamforming/Rayleigh fading/diversity/maximum-ratio-transmission ( MRT)/outage probability分类
信息技术与安全科学引用本文复制引用
赵睿..结合波束形成的双向中继选择策略[J].江苏大学学报（自然科学版）,2011,32(6):706-709,714,5.基金项目
国家自然科学基金资助项目(60902012,60772164) （60902012,60772164）
福建省科技重大专项项目(2009 HZ0008) （2009 HZ0008）
华侨大学科研项目(10BS208) （10BS208）
