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In this paper, the problem of maximizing the number of users that can be served in a wireless network under QoS requirements and transmitter power limitations is studied. This problem is mathematically defined and then transformed into a novel form which is solvable by geometric programming. A suboptimum solution is proposed and the performance of this method is investigated by simulations.
Secondary spectrum usage has the potential to considerably increase spectrum utilization. In this paper, quality-of-service (QoS)-aware spectrum underlay is considered. A multi-antenna access point transmits common information to a set of secondary receivers, by means of appropriate beamforming; the objective is to maximize the multicast beamforming rate (or, equivalently, minimize the signal to noise...
We consider the problem of several users transmitting packets to a base station, and study an optimal scheduling formulation involving three communication layers, namely, the medium access control, link, and physical layers. We assume Markov models for the packet arrival processes and the channel gain processes. Perfect channel state information is assumed to be available at the transmitter and the...
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