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所属单位：计算机科学与技术学院/人工智能学院/软件学院
发表刊物：IEEE Access
摘要：In order to realize a variety of intelligent applications, a large number of devices need to collect and transmit potentially large amounts of data through the Internet of Things. However, with the explosive growth of communication devices, spectrum resources are becoming more and more scarce, which in turn makes it impossible to send information in time. Cognitive radio technology is an effective way to resolve spectrum allocation shortages, while the spatiotemporal uncertainty of spectrum has a great influence on the secondary user (SU)'s throughput. In this paper, we investigate the network coding scheme in cognitive radio networks under multiple primary and SU relationships, including non-collaboration, collaboration, and lease. Moreover, we propose a hybrid network coding scheme to improve the utilization efficiency of idle spectrum. In particular, the successful transmission rate and the packet loss rate can be increased and decreased through redundant coding, respectively. The simulation results show that our proposed scheme can achieve a better performance in terms of both delay and throughput than the existing mechanisms. © 2018 IEEE.
是否译文：否
发表时间：2018-01-01
合写作者：Mei, Shiji,徐曙峰,Ma, Zhenzhou
通讯作者：陈兵