传感技术学报2012，Vol.25Issue(3)：397-401,5.DOI:10.3969/j.issn.1004-1699.2012.03.024
一种改进的Two-way中继协作系统下的节点选取和功率分配策略
An Improved Strategy on Relay Selection and Power Allocation in a Two-Way Cooperative Relay System
摘要
Abstract
For a traditional Two-way DF relay system,to enhance sum-rate of the system,this paper introduces a bidirectional relay selection ( BRS) strategy, which implements the optimal relay selection based on both received Signal-to-Noise Ratio ( SNR) at the relay and channel gain from the relay to destination. Moreover, the optimal strategy on power allocation is also proposed in the paper, based on the physical network coding( PNC) protocol. Simulation results show that,when the total power of the system is large, BRS strategy has 2. 5 bit/(s·Hz) increment of the sum-rate comparing to a random relay selection ( RRS ) strategy. Meanwhile, the proposed power allocation strategy also gains about 1 dB in average over the equal power allocation ( OPA) strategy. Also, Comparing to traditional One-way relay cooperative system, 3 bit/(s· Hz) improvement on sum-rate can be obtained.关键词
无线传感器网络/中继选择和功率分配/物理层网络编码/最优功率分配/多接入信道/广播信道Key words
wireless sensor networks/ relay selection and power allocation/ physical network coding/ optimal power allocation/ multi-access channel/ broadcasting channel分类
信息技术与安全科学引用本文复制引用
刘顺兰,徐光建..一种改进的Two-way中继协作系统下的节点选取和功率分配策略[J].传感技术学报,2012,25(3):397-401,5.基金项目
高校合作项目(K0828011) （K0828011）
