船舶自组网近海环境中的集群分布式协作频谱检测算法
发布时间：2018-11-12 21:11
【摘要】：文中考虑在船舶自组网中应用认知无线电技术,并对该应用在近海环境中的频谱检测算法展开了深入研究。以往研究描述了基于认知无线电技术的船舶自织网中主用户节点的隐藏问题。考虑到该网络的动态拓扑结构以及在海洋通信环境中难以寻找固定中心节点的限制,曾提出了一种离散式协作频谱检测算法,并采用自加权方式对检测结果做出修正,提高了算法可靠性。文中介绍了近海环境中自加权分布式频谱检测算法存在的问题。在近海区域,由于船舶密度较大,用户之间干扰增加,使得离散式频谱检测方法的可靠性降低。针对近海区域的通信场景,进一步改进了现有的频谱检测算法,即提出了集群分布式协作频谱检测算法,并且通过仿真验证了所提算法在近海环境中的有效性。
[Abstract]:In this paper, we consider the application of cognitive radio technology in marine ad hoc networks, and further study the spectrum detection algorithm in offshore environment. Previous studies have described the problem of hiding primary user nodes in ship self-weaving networks based on cognitive radio technology. Considering the dynamic topology of the network and the limitation of finding fixed center nodes in the ocean communication environment, a discrete cooperative spectrum detection algorithm was proposed, and the detection results were modified by self-weighted method. The reliability of the algorithm is improved. The problems of self-weighted distributed spectrum detection algorithm in offshore environment are introduced in this paper. In the offshore area, the reliability of the discrete spectrum detection method is reduced because of the high density of ships and the increase of interference between users. For the communication scene in offshore area, the existing spectrum detection algorithm is further improved, that is, cluster distributed cooperative spectrum detection algorithm is proposed, and the effectiveness of the proposed algorithm in offshore environment is verified by simulation.
【作者单位】： 河海大学物联网工程学院;深圳华为技术有限公司;
【基金】：国家自然科学基金(61273170) 中央高校基本科研业务费专项资金(2015B30614;2015B25214) 江苏省自然科学基金(BK20141157;BK20160287)资助项目
【分类号】：U665.2;TN925
，
本文编号：2328226
[Abstract]:In this paper, we consider the application of cognitive radio technology in marine ad hoc networks, and further study the spectrum detection algorithm in offshore environment. Previous studies have described the problem of hiding primary user nodes in ship self-weaving networks based on cognitive radio technology. Considering the dynamic topology of the network and the limitation of finding fixed center nodes in the ocean communication environment, a discrete cooperative spectrum detection algorithm was proposed, and the detection results were modified by self-weighted method. The reliability of the algorithm is improved. The problems of self-weighted distributed spectrum detection algorithm in offshore environment are introduced in this paper. In the offshore area, the reliability of the discrete spectrum detection method is reduced because of the high density of ships and the increase of interference between users. For the communication scene in offshore area, the existing spectrum detection algorithm is further improved, that is, cluster distributed cooperative spectrum detection algorithm is proposed, and the effectiveness of the proposed algorithm in offshore environment is verified by simulation.
【作者单位】： 河海大学物联网工程学院;深圳华为技术有限公司;
【基金】：国家自然科学基金(61273170) 中央高校基本科研业务费专项资金(2015B30614;2015B25214) 江苏省自然科学基金(BK20141157;BK20160287)资助项目
【分类号】：U665.2;TN925
，
本文编号：2328226
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