A Feedback- Soft Sensing-Based Access Scheme for Cognitive Radio Networks
作者： Ahmed M. Arafa , Karim G. Seddik , Ahmed K. Sultan , Tamer ElBatt , Amr A. El-Sherif
DOI: 10.1109/TWC.2013.061413.120851
关键词:
摘要: In this paper, we examine a cognitive spectrum access scheme in which secondary users exploit the primary feedback information. We consider an overlay network employing random channel by certain probabilities that are functions of sensing metric. setting our problem, assume can eavesdrop on link's feedback. study radio from queuing theory point view. Access determined solving throughput maximization problem subject to constraint queues' stability. First, formulate is found be non-convex. Yet, solve it efficiently exploiting structure equation. Our yields improved results in, both, user and packet delay as compared where no information exploited. addition, comes very close optimal genie-aided act upon presumed perfect knowledge users' activity.
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