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We have focused on SC-FDMA based resource allocation in uplink cellular systems. Subchannel and power allocation constraints specific to SC-FDMA are considered. We considered a binary integer programming-based solution recently proposed for weighted sum rate maximization and extended it to different problems. We considered problems such as rate constraint satisfaction with minimum number subchannels...
In this work we study framed transmission in an OFDMA based relayed wireless access system that utilize cooperative diversity. We consider a system of a source, a relay and a number of destination nodes, where the nodes can combine the signals coming from the source and relay. We are interested in the case that the source and relay only have the information of path loss and slow fading. The goal in...
We consider a finite buffer shared by multiple packet queues. Throughput can be considerably improved by partitioning the buffer space among the queues judiciously, especially under a high load regime. We formulate optimal buffer partitioning as a resource allocation problem, the solution of which is found through a greedy incremental algorithm in polynomial time. The rest of the work is devoted to...
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