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Multiple-input multiple-output (MIMO) systems can achieve high capacity with applying space division multiple access benefits. By using channel state information at BS/MS we can remove inter user interference by applying beam forming. An important challenge at multi user (MU) systems is how design transmitting vector with respect to inter user interference. Capacity problem optimization, maximizing...
This paper addresses feedback design issues in ad hoc networks with simultaneous access of multiple users, when type II HARQ exploits a constrained capacity reverse channel. In such networks, communications performance is limited by interference and nodes operate in a distributed fashion; thus, efficient resource allocation relies on proper feedback signaling, which on the other hand can use only...
We consider the downlink of a wireless system with an M-antenna base station and K single-antenna users. A limited feedback-based scheduling and precoding scenario is considered that builds on the multiuser random beamforming (RBF). Such a scheme was shown to yield the same capacity scaling, in terms of multiplexing and multiuser diversity gain, as the optimal full CSIT-based (channel state information...
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