一种干扰受限场景下的双向中继选择方法  

Relay Selection for Interference-limited Two-way Relaying System

作　　者：张庭园 李小兵[2] 郑宇[3] 李靖[3] 

机构地区：[1]中国科学院微电子所,北京100029 [2]中兴通讯股份有限公司,北京100083 [3]西安电子科技大学通信工程学院,陕西西安710071

出　　处：《电视技术》2015年第5期109-111,124,共4页Video Engineering

基　　金：国家自然科学基金项目(61101144);国家科技重大专项(2013ZX03003001)

摘　　要：针对非对称双向中继通信系统,提出了一种干扰受限场景下的机会中继选择方法。该方法仅利用了中继节点的本地信道状态信息且实现复杂度低,适用于两个源节点的发射功率和阈值速率均不同的双向中继通信系统。仿真结果表明,在中高信噪比条件下,所提方法的性能接近于最优中继选择方法,且大大优于未考虑干扰的传统中继选择方法。In this paper, an opportunistic relay selection scheme for interference-limited two-way relaying system is proposed, which only requires the local channel state information at the relay nodes and has low implementation complexity. This scheme can be applied to the situation that two source nodes have different transmit powers and the expected transmission rate thresholds for them are unequal. Simulation results show that for the medium-to-high signal-to-noise ratios （SNRs）, the proposed scheme performs closely to the optimal relay selection scheme and greatly outperforms the traditional interference-free relay selection scheme.

关 键 词：干扰受限 双向通信 中继选择 

分 类 号：TN925[电子电信—通信与信息系统]