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This paper investigates delay constrained performance of a cognitive radio relay network when the cognitive (secondary) user transmission is subject to satisfying spectrum-sharing restrictions imposed by a primary user. The primary user allows a secondary user to gain access to its allocated spectrum band as long as certain thresholds on the interference power, on the peak or average values, inflicted...
A power allocation strategy is proposed for spectrum-sharing channels, in which two users share the spectrum band with one of them having a primary access to the band. The secondary user can utilize the spectrum as long as it complies with the service requirements of the primary user. Specifically, the latter allows the former to utilize the channel as long as its rate degradation as a results of...
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