认知网络能效性协作功率分配算法  

Cooperative Power Allocation Algorithm for the Energy Efficiency of CR Network

作　　者：贾鹤萍[1] 郭艳艳[1] 卫霞[1] 杨荣草[1] JIA Heping GUO Yanyan WEI Xia YANG Rongcao(College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, Chin)

机构地区：[1]山西大学物理电子工程学院,山西太原030006

出　　处：《测试技术学报》2017年第5期377-383,共7页Journal of Test and Measurement Technology

基　　金：国家自然科学基金资助项目(61178013);山西省自然科学基金资助项目(2016011038)

摘　　要：当前认知无线电(cognitive radio,CR)协作策略的目的主要是为了提高认知系统的容量、中断概率或带宽利用率,而对于能量有限认知网络,如传感器网络,协作传输减少传输能量消耗和延长网络生命周期才是最关键的问题.协作提高CR系统能效性策略和现在的研究相比,中继节点选择及功率分配有所不同.本文提出了一种基于共存式频谱共享情况下的CR协作功率分配策略,目的是最小化CR系统的能量消耗.The aim of cognitive radio（CR）cooperative strategy in many existing works is to improve the capacity,outage probability or bandwidth utilization of cognitive systems.For the limited energy cognitive networks,such as sensor networks,reducing the transmission energy consumption and prolonging the network life cycle by cooperative transmission are the most critical issues.Comparing the cooperative CR system with those of the current researches,the relay node selection and power allocation are quite different.This paper proposes a cooperative power allocation strategy for cooperative CR system based on coexistence spectrum sharing with the aim of minimizing the energy consumption of CR system.

关 键 词：认知无线电 共存式频谱共享 能量受限的认知网络 CR协作系统 

分 类 号：TN925.1[电子电信—通信与信息系统]