基于干扰管理的功率速率联合控制博弈方法

A Game-Theoretic Joint Rate and Power Control Based On Interference Management

针对已有的干扰温度模型在降低主用户受到的干扰方面的不足,本文加强了主用户在干扰控制中的主观能动性。在次用户相互博弈,调整发射功率和传输速率,降低次用户之间干扰的同时,主用户对受到次用户的干扰进行监测,在保证不超过干扰门限的同时,设计了干扰惩罚因子,对其干扰越大的次用户受到的惩罚越大,进一步合理地分配次用户的发射功率,减少对主用户的干扰。仿真结果表明,提出的干扰博弈方法能够降低次用户的发射功率,减小对主用户产生的干扰,提高了主用户的系统容量。同时,在次用户网络内,因为发射功率的降低,次用户彼此的干扰减小,接收信干比有了一定的改善。

Based on the shortage of the current interference temperature model that reduces the interferences taken to primary users,this paper strengthens those users＇ subjectivities in power control.Besides the game among secondary users to reduce their interferences due to the others by the adjustments in transmission powers and rates,the primary users detect the inferences taken by secondary users and use an interference punishment factor we designed under the premise that the inferences do not exceed the threshold.The more interference that the secondary user affects primary users,the more seriously that the secondary user will be punished.In this way,the transmission powers of secondary users and interferences that primary users affected will be reduced.The simulation results show that the proposed game-theoretic interference method could reduce interference and improve utility of primary users by decreasing secondary transmission powers.At the same time,the interferences among secondary users could also be ieduced,and the received signal to interference will achieve some improvements.