基于信道选择和自适应功率控制的动态频谱分配

Dynamic Spectrum Allocation Based on Channel Select and Adaptive Power Control

针对频谱分配过程中会出现用户间的干扰问题,提出了一种基于信道选择和自适应功率控制的动态频谱分配算法.该算法的基本思想是将认知用户间频谱的竞争转化为以信道选择为策略空间的博弈模型,通过调整发射功率和利用改进后的效用函数来选择最优的分配策略.实验结果表明:该算法在实现频谱动态分配的同时减小了对授权用户的干扰,提高了系统总吞吐量.

This paper presents a dynamic spctrum allocation algorithm based on channel select and adaptive power control to keep from interference among the users in the spectrum allocation.The proposed algorithm presents that the competition among cognitive users is transformed into a game model of strategy space of channel selection by adjusting transmitting power and using the improved utility function to select the optimal allocation strategy.The experimental results demonstrate that the proposed algorithm realizes dynamic spectrum allocation and decreases the interference of authorized users,and at the same time increases the total throughput of system.