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Due to the characteristic of collaborative beamforming, more than one node will be used to form the beampatten. Although the more nodes are selected the better beampattern can be formed, it also means more energy will be consumed. Considering the scarcity of energy in wireless ad-hoc network, the number of collaborative nodes must be controlled. It is necessary to select some of them to form the pattern...
In this paper a spectrum sharing scheme is proposed to maximize the successful transmission probability of a single-hop cognitive network coexisting with a random primary network. Both cognitive and primary networks exhibit randomness in topologies and endure imperfect wireless channel conditions. For a given primary outage probability bound, the maximum secondary transmit power is determined and...
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