一种认知无线电功率分配方法

A power allocation algorithm in the cognitive radio networks

提出了一种分布式认知无线电功率分配算法。在保证认知用户给主用户造成的干扰低于主用户所能承受的最大干扰功率和各个认知用户的总发射功率的前提下,最大化系统容量。通过拉格朗日乘子算法,算法收敛于均衡点。实验仿真表明,该算法不仅能够最大化系统容量,而且可以保证系统无缝通信。

An efficient CR users＇ power transmission algorithm is proposed here to ensure the interfering temperature be below the limitation and the maximum transmission power for each user be cognitive, at the time the power capacity is maximized. With Lagrange dual method, the proposed algorithm converges to equilibrium point. Simulation results show that the algorithm not only can maximize the capacity, but also guarantee the system to seamless communication.