基于功率分配的最大化协作网络寿命  

Power allocation for lifetime maximization in cooperative networks

作　　者：于春玲[1] 朱玉全[2] YU Chun-ling 1,ZHU Yu-quan 2(1.Department of Information,Jiangsu Food and Pharmaceutical Science College,Huai ’an 223005,China;2.School of Computer Science and Telecommunications Engineering,Jiangsu University,Zhenjiang 212013,Chin)

机构地区：[1]江苏食品药品职业技术学院信息系,江苏淮安223005 [2]江苏大学计算机科学与通信工程学院,江苏镇江212013

出　　处：《计算机工程与设计》2018年第7期1851-1855,共5页Computer Engineering and Design

基　　金：国家自然科学基金项目(71271117);江苏省自然科学基金项目(BK20150531);国家科技创新基金项目(14C26213201047)

摘　　要：为最大化协作网络寿命,提出一种基于功率分配的最大化协作网络寿命算法(power allocation algorithm for lifetime maximization,PALM)。基于符号出错率约束条件下,为最大化网络寿命,对PALM算法进行研究。建立节点功率消耗模型,构建目标函数,利用Lagrangian函数求解目标函数,优化功率分配。分析网络尺寸、非对称用户初始能量分布对网络寿命的影响。实验结果表明,相比于WLFEPAT和WLFOPA算法,PALM算法极大提高了网络寿命,特别是在非对称初始能量条件下。To maximize the lifetime of collaborative networks,an algorithm for lifetime maximization based on power allocation was proposed to maximize the lifetime of collaborative networks.The PALM algorithm was studied to maximize the network lifetime under the constraint of symbol error rate.The node power consumption model was established,the objective function was constructed,and the Lagrangian function was used to solve the objective function,and the power allocation was optimized.The influence of the network size and the initial energy distribution of asymmetric users on the network lifetime was analyzed.Experimental results show that,compared with WLFEPAT and WLFOPA algorithm,the proposed PALM algorithm greatly improves the network lifetime,especially under asymmetric initial energy conditions.

关 键 词：协作网络 功率分配 网络寿命 Lagrangian函数 符号出错率 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]