A Resource Allocation Scheme Jointly Considering Network Capacity and User Satisfaction in Cognitive Radio Networks
LI Jing-ye1,2, LUO Tao1, YUE Guang-xin1
1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;
2. The State Key Laboratory of Integrated Services Networks, Xidian University, Xi’an, Shaanxi 710071, China
Abstract：Opportunistic spectrum access is an effective method to improve the spectrum utilization.In this paper,a multi-objective optimization model is proposed to take the time-variance characteristic of wireless channel,confidence level of sub-channel detection and the mutual interference between the primary networks and the cognitive radio networks into consideration,in which the effective capacity and user satisfaction are jointly optimized.Then,we also present a resource allocation scheme for power allocation and user scheduling (PAUS).The simulation results show that in lower density environment for the primary user,the proposed optimization model can achieve better performance in user satisfaction than that of the model to maximize the system capacity,and it can obtain higher network capacity than that of the optimization model to maximize the user satisfaction.
李静叶, 罗涛, 乐光新. 联合网络容量与认知用户满意度的资源分配优化方案[J]. 电子学报, 2012, 40(7): 1315-1322.
LI Jing-ye, LUO Tao, YUE Guang-xin. A Resource Allocation Scheme Jointly Considering Network Capacity and User Satisfaction in Cognitive Radio Networks. Chinese Journal of Electronics, 2012, 40(7): 1315-1322.
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