A power allocation algorithm based on variational inequality problem for cognitive radio networks

被引：1
作者：
Zhou M.-Y. [1 ]
Zhao X.-H. [2 ]
机构：
[1] College of Computer Science and Technology, Changchun University of Technology, Jilin
[2] Key Laboratory of Information Science, College of Communication Engineering, Jilin University, Jilin
来源：
Zhou, Ming-Yue (zmyjlu@ccut.edu.cn) | 1600年 / Korea Information Processing Society卷 / 13期
基金：
中国国家自然科学基金;
关键词：
Cognitive radio; Power allocation; Variational Inequality;
D O I：
10.3745/JIPS.03.0068
中图分类号：
学科分类号：
摘要：
Power allocation is an important factor for cognitive radio networks to achieve higher communication capacity and faster equilibrium. This paper considers power allocation problem to each cognitive user to maximize capacity of the cognitive systems subject to the constraints on the total power of each cognitive user and the interference levels of the primary user. Since this power control problem can be formulated as a mixed-integer nonlinear programming (NP) equivalent to variational inequality (VI) problem in convex polyhedron which can be transformed into complementary problem (CP), we utilize modified projection method to solve this CP problem instead of finding NP solution and give a power control allocation algorithm with a subcarrier allocation scheme. Simulation results show that the proposed algorithm performs well and effectively reduces the system power consumption with almost maximum capacity while achieve Nash equilibrium. © 2017 KIPS.
引用
收藏
页码：417 / 427
页数：10
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