西南交通大学学报Issue(3)：499-506,8.DOI:10.3969/j.issn.0258-2724.2014.03.020
基于OFDM的DF中继链路能效最优资源分配策略
Scheme for Optimal Energy-Efficient and Resource Allocation in OFDM-Based DF Relay Link
摘要
Abstract
The resource allocation problem in OFDM-based DF-Relayed link was formulated as a joint optimization of subcarrier pairing and power allocation while maximizing energy efficiency (EE )with both the minimum rate and the total transmission power constraints. It is proved that the optimal energy-efficient solution under the minimum rate and maximum transmit power constraints for the OFDM-based DF-Relayed link is globally unique. Subsequently,a resource allocation scheme with low complexity was proposed. Simulation results show that compared with the fixed subcarrier pairing strategy,the data rate and EE of the proposed scheme with the subcarriers pairing strategy are respectively increased by 2 . 3% and 3 . 1% when the relay node is located at the midpoint position between the source and destination nodes,and Rmin=1. 5 Mbit/s. Compared with the traditional equal power allocation scheme,rate maximization and waterfilling power minimization schemes,the proposed scheme achieves the optimal EE while guaranteeing minimum rate requirements and maximum total transmission power constraints.关键词
能效/资源分配/正交频分复用/解码转发中继Key words
energy efficiency/resource allocation/OFDM/decode-and-forward (DF)relay分类
信息技术与安全科学引用本文复制引用
黄高勇,方旭明,黄博,陈煜..基于OFDM的DF中继链路能效最优资源分配策略[J].西南交通大学学报,2014,(3):499-506,8.基金项目
国家自然科学基金资助项目（61071108）；中央高校基本科研业务费专项资金青年教师百人计划资助项目 （）
