一种新的频谱共享模型

A Novel Spectrum Sharing Model

考虑认知无线电系统中多个主用户与单个次用户共享频谱的问题,提出了基于Cournot博弈的频谱共享模型。依次推导了基于Coumot与Bertrand博弈的频谱共享模型的静态纳什均衡,给出了动态博弈获取纳什均衡解的分布式算法,分别分析了只考虑主用户收益与考虑社会效益这两种情况中,信道质量与频谱的可替代性对两种博弈模型的影响,给出了它们的适用范围。最后通过仿真结果验证了本文模型的可行性。

The problem of spectrum sharing among multiple primary users and a secondary user in cognitive radio network is considered. Cournot game is presented based spectrum sharing model. Static game Nash Equilibrium of Cournot and Bertrand game are derived based spectrum sharing model. Distributed algorithms are used to obtain the solution for dynamic game. In the cased of considering profit of primary user and considering the social welfare respectively, the impacts of spectrum substitutability and channel quality on two game models are ana- lyzed. The scope of application of the two models is obtained. Finally, the feasibility of the model is proved by the simulation results.