认知无线网络中功率和信道接入的联合优化

doi:10.11959/j.issn.1000-0801.2017013

电信科学 ›› 2017, Vol. 33 ›› Issue (2): 55-65.doi: 10.11959/j.issn.1000-0801.2017013

认知无线网络中功率和信道接入的联合优化

朱江,杜清敏,巴少为

重庆邮电大学移动通信技术重庆市重点实验室，重庆 400065
重庆邮电大学移动通信技术重庆市重点实验室，重庆400065

修回日期:2017-01-04 出版日期:2017-02-01 发布日期:2017-03-07
作者简介:朱江（1977-），男，博士，重庆邮电大学副教授，主要研究方向为通信理论与技术、信息安全技术等。|杜清敏（1990-），女，重庆邮电大学硕士生，主要研究方向为认知无线电。|巴少为（1991-），女，重庆邮电大学硕士生，主要研究方向为认知无线电。
基金资助:
国家自然科学基金资助项目(61102062);国家自然科学基金资助项目(61271260);重庆市科委自然科学基金资助项目(cstc2015jcyjA40050)

Joint optimization of power and channel access in cognitive radio network

Jiang ZHU,Qingmin DU,Shaowei BA

Chongqing Key Laboratory of Mobile Communications Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,China

Revised:2017-01-04 Online:2017-02-01 Published:2017-03-07
Supported by:
The National Natural Science Foundation of China(61102062);The National Natural Science Foundation of China(61271260);The Natural Science Foundation of Chongqing Science and Technology Commission(cstc2015jcyjA40050)

摘要/Abstract

摘要：

在认知无线网络中，针对系统中所有用户能否接入同一信道进行通信的问题，提出了适用于不同情形的联合优化方案。在系统不可行的情形下，提出了联合优化功率和接入控制的方案。由于接入控制是NP问题，于是利用所提LP-PSO算法来实现优化控制，并分析和证明了所提算法的收敛性。在系统可行的情形下，提出了联合优化功率和传输速率分配的方案，通过改进拉格朗日对偶（Lagrange duality）算法来实现优化控制。数值结果分析表明，相比其他接入控制算法，虽然所提算法的时间复杂度有所增加但能够快速收敛，在有效地提高接入量的同时还能降低功率消耗，并能使传输速率得到更公平的分配。

关键词: 认知无线网络, 功率和接入控制, 功率和传输速率分配, NP问题

Abstract:

In cognitive radio networks,according to the problem of all users can access the same channel to communicate,two joint optimization schemes for different scenarios were proposed.When the system is infeasible,a scheme of joint optimal power and admission control was proposed.As admission control is the NP problem,the LP-SO was used to achieve optimize control.At the same time,the convergence of the proposed algorithm was analyzed and proved.When the system is feasible,a scheme of joint optimal power and transmission rate allocation was proposed,using the improved Lagrange duality algorithm to achieve optimize control.The numerical results show that compared with other admission control algorithms,the time complexity of proposed algorithm is increased,but it can converge quickly,effectively improves the number of admitted uses while reducing power consumption.In addition,the proposed algorithm can allocate transmission rate more fairly.

Key words: cognitive radio network, power and admission control, power and transmission rate allocation, NP problem

中图分类号:

TN929

朱江,杜清敏,巴少为. 认知无线网络中功率和信道接入的联合优化[J]. 电信科学, 2017, 33(2): 55-65.

Jiang ZHU,Qingmin DU,Shaowei BA. Joint optimization of power and channel access in cognitive radio network[J]. Telecommunications Science, 2017, 33(2): 55-65.

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算法	复杂度
联合优化方案	O(N×N×size×T)
LD	O(N×N)
I-SMIRA	O(N×N)
SMIRA	O(N×N)

认知无线网络中功率和信道接入的联合优化

Joint optimization of power and channel access in cognitive radio network

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