《计算机应用研究》|Application Research of Computers

一种双信道协作中继的认知网络功率分配算法

Cognitive network power allocation algorithm for dual channel cooperative relay

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作者 刘少江,许志明,倪伟传,王凤,万智萍
机构 中山大学新华学院 a.信息科学学院;b.设备与实验室管理处,广州 510520
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文章编号 1001-3695(2020)06-051-1851-04
DOI 10.19734/j.issn.1001-3695.2019.01.0002
摘要 针对认知无线网络主、次用户的互相干扰对网络中断性能以及系统传输效率的影响进行了研究,采用一种双信道协作中继的传输方案来减少干扰,并提出一种基于中断概率的最优功率分配方案来改善中断性能和传输效率。在该传输方案中,主、次系统通过对接收的主信号和复合信号进行处理,采用连续的干扰解码和消除得到去干扰信号。该功率分配方案在保障主系统中断性能的前提下,提出次系统中断概率的优化方程,通过关联功率分配因子来实现最大化次系统吞吐量。实验结果表明,该算法在改善中断性能和系统吞吐量方面具有较好的效果。
关键词 双信道协作中继; 认知无线网络; 中断性能; 功率分配
基金项目 广东省青年创新人才自然科学基金资助项目(2014KQNCX253,2015KQNCX227)
中山大学新华学院2017年度校级科研项目(2017YB005)
本文URL http://www.arocmag.com/article/01-2020-06-051.html
英文标题 Cognitive network power allocation algorithm for dual channel cooperative relay
作者英文名 Liu Shaojiang, Xu Zhiming, Ni Weichuan, Wang Feng, Wan Zhiping
机构英文名 a.School of Information Science,b.Dept. of Equipment & Laboratory Management,Xinhua College of Sun Yat-Sen University,Guangzhou 510520,China
英文摘要 Aiming at the influence of mutual interference of primary and secondary users of cognitive wireless network on network interruption performance and system transmission efficiency, this paper used a two-channel cooperative relay transmission scheme to reduce interference, and proposed an optimal power allocation scheme based on outage probability to improve the interrupt performance and transmission efficiency. In the transmission scheme, the primary and secondary systems processed the received primary signal and the composite signal, and used continuous interference decoding and cancellation to obtain a de-interference signal. In the power allocation scheme, under the premise of guaranteeing the interruption performance of the main system, it proposed an optimization equation for the probability of sub-system outage, which maximized the subsystem throughput by correlating the power allocation factors. Experimental results show that the algorithm has a good effect in improving interrupt performance and system throughput.
英文关键词 dual channel cooperative relay; cognitive wireless network; interrupt performance; power allocation
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收稿日期 2019/1/15
修回日期 2019/2/20
页码 1851-1854
中图分类号 TN925
文献标志码 A