A resource allocation scheme jointly considering network capacity and user satisfaction in cognitive radio networks

作者：Li Jing Ye^*; Luo Tao; Yue Guang Xin

来源：Acta Electronica Sinica, 2012, 40(7): 1315-1322.

DOI：10.3969/j.issn.0372-2112.2012.07.005

• Capacity
• Cognitive radio network
• Confidence levels
• Effective capacity
• Higher networks
• Lower density
• Multi-objective optimization models
• Mutual interference
• Network Capacity
• Opportunistic spectrum access
• Optimization models
• Power allocations
• Resource allocation schemes
• Spectrum utilization
• System Capacity
• User satisfaction
• User scheduling
• Wireless channel

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.

• 出版日期2012
• 单位北京大学