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This letter works on the issue of self-coexistence from the perspective of graph coloring based channel allocation in homogeneous ad-hoc networks. A formal relation is shown between edge restricted multi-coloring scheme and maximum throughput utility function of the system. A distributed edge restricted multi-coloring scheme is proposed to maximize the overall throughput of the system while guaranteeing...
Recently cognitive radio has gain considerable interest by research community as a viable solution to mitigate the problems of spectrum scarcity and spectrum under-utilization. A cognitive radio selects a vacant channel opportunistically and perform its own transmission on it. Detecting an incumbent user along with self-coexistence has become one of the important aspects of the cognitive radio. The...
Recently cognitive radio based dynamic spectrum access techniques have been anticipated to solve the problem of spectrum scarcity and spectrum under-utilization. With multiple cognitive radio network operating in a given region, a network has to mitigate the harmful effects of interference from licensed users and other cognitive radio networks. To this end we propose a self co-existence protocol for...
In this paper we propose a medium access control protocol for single-hop cognitive radio network which distributes the contention for channel access onto respective channel instead of common control channel. The design utilizes rendezvous channel as a media for distributing information about the nodes and channels in the network. The distribution of contention on different channels mitigate the harmful...
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