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认知无线电传感器网络中的分布式频谱感知分簇

Distributed Spectrum-Aware Clustering in Cognitive Radio Sensor Networks

Huazi Zhang, Zhaoyang Zhang, Huaiyu Dai, Rui Yin, Xiaoming Chen

摘要:

针对认知无线电传感器网络提出了一种新的分布式频谱感知分簇算法。DSAC旨在以自组织的方式形成能量高效的集群,同时限制对主用户(PU)系统的干扰。提出了频谱感知的簇结构,其中通信由簇内聚合和簇间中继组成。为了节省通信功率,推导了最优簇数,并引入了分组约束分簇的思想,以最小化频谱感知约束下的簇内距离。在实际实现中,DSAC表现出较好的可扩展性和稳定性,因为它的低复杂度和快速收敛下的动态PU活动。最后给出了仿真结果,验证了该方案的有效性.

英文摘要:

A novel Distributed Spectrum-Aware Clustering (DSAC) scheme is proposed in the context of Cognitive Radio Sensor Networks (CRSN). DSAC aims at forming energy efficient clusters in a self-organized fashion while restricting interference to Primary User (PU) systems. The spectrum-aware clustered structure is presented where the communications consist of intra-cluster aggregation and inter-cluster relaying. In order to save communication power, the optimal number of clusters is derived and the idea of groupwise constrained clustering is introduced to minimize intra-cluster distance under spectrum-aware constraint. In terms of practical implementation, DSAC demonstrates preferable scalability and stability because of its low complexity and quick convergence under dynamic PU activity. Finally, simulation results are given to validate the proposed scheme.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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