重庆邮电大学学报（自然科学版）2019，Vol.31Issue(1)：1-10,10.DOI:10.3979/j.issn.1673-825X.2019.01.001
能量收集认知网络中基于次用户意愿和吞吐量的中继协作方案
Optimal relay scheme for cooperation and throughput requirements of secondary users in energy harvesting cognitive networks
摘要
Abstract
Energy harvesting cognitive radio networks is a research hotspot at present, but it seldom considers the demands of secondary users, and lacks specific cooperative schemes between primary users (PU) and secondary users (SU). So, in this paper, we propose a relay cooperative scheme based on SU's willingness. Unlike the traditional cooperative schemes, we consider the SU's willingness and assume that SU can select PU with less traffic load to cooperate with, and specific cooperative strategy is proposed. In this scheme, we firstly design an optimizing scheme of energy harvesting time sharing factor to maximize the SU's throughput in cooperation mode and non-cooperation mode. Moreover, we derive the closed-form solution of energy harvesting time sharing factor in non-cooperation mode. Meanwhile, in cooperation mode, the optimal result can not be obtained directly through analytical algorithm, so the optimizing problem is solved through ergodic searching solution. Finally, we conduct the simulation analysis, on the one hand, the results indicate that the proposed scheme has better performance compared with existing cooperative schemes; on the other hand, we simulate the impact that different parameters have on the performance of proposed scheme.关键词
认知无线电/能量收集/次用户意愿/中继协作/吞吐量最大Key words
cognitive radio/energy harvesting/willingness of secondary users/relay cooperation/throughput maximization分类
信息技术与安全科学引用本文复制引用
谢显中,罗莹,陈九九,严可..能量收集认知网络中基于次用户意愿和吞吐量的中继协作方案[J].重庆邮电大学学报（自然科学版）,2019,31(1):1-10,10.基金项目
国家自然科学基金 (61271259, 61601070) （61271259, 61601070）
重庆市教委科学技术研究项目 (KJ1600411) （KJ1600411）
重庆市教委重点实验室专项经费 (KJ12010000062) （KJ12010000062）
重庆市基础与前沿研究计划项目 (CSTC2016jcyjA0455) （CSTC2016jcyjA0455）
长江学者和创新团队发展计划 (IRT1299) （IRT1299）
