基于CDS的分布式协作共识频谱感知方法

Distributed Consensus Cooperative Spectrum Sensing Method Based on Connected-Dominating-Set

  • 摘要: 针对原有全网络分布式协作共识方法信息交互量大、收敛速度慢、共识收敛结果不稳定的问题,本文在分布式协作共识频谱感知方法的基础上,提出了基于连通支配集的分布式协作共识频谱感知方法。该方法通过网络连通支配子集进行网络频谱感知信息的收集和共识计算,获得稳定的共识结果,再将共识结果分享给网络其他非支配集节点,实现全网络快速共识收敛。与原有分布式协作共识方法相比,降低了网络节点间的信息交互量,并且能快速收敛到稳定、精确的共识结果,仿真结果验证了算法的优良特性。

     

    Abstract: Aiming at the problems of large amount of information exchange, slow convergence and unstable convergence result of the original whole-network distributed cooperative consensus method, a distributed consensus cooperative spectrum sensing method based on connected-dominating-set is proposed. In this paper, the connected-dominating-set method collects information of network spectrum sensing and does consensus calculation through the network connected dominating subset, which gets a stable consensus result. Then, the consensus results are shared to other non-dominated nodes in the network, so rapid convergence is achieved. There are two advantages of the proposed method compared with the original network distributed cooperative consensus method. One is that the amount of information exchanged among network nodes reduces, the other is that the network can quickly converge to a stable and accurate consensus result. The proof of convergence theorem of distribution consensus is given in this paper. Lastly, the simulation results show the excellent characteristics of this new algorithm.

     

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