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In this paper we study the problem of client association, airtime sharing and contention resolution in a multi-cell WLAN to achieve fair download bandwidth sharing. We first model the problem as a utility maximization problem, then, because of the integral nature of association, the problem being NP-hard, we decompose it into two sub-problems: the client association problem on one hand, and the joint...
In co-channel deployment of macrocell and indoor femtocells, almost blank subframe (ABS) is considered as an effective enhanced inter-cell interference coordination strategy for mitigating downlink cross-tier interference. In this paper, a novel distributed dynamic ABS ratio setting scheme is proposed for dense residential femtocell deployment with closed subscriber group configuration. Both the overall...
In this paper, we investigate spatial intercell interference cancellation -- an efficient technique to mitigate intercell interference in multicell networks. We consider a practical model for channel state information (CSI), where the transmit CSI is acquired through downlink training and uplink feedback. Due to the requirement of channel information from multiple base stations, the training and feedback...
Compared to real cellular systems where users are spatially distributed and interference levels vary by several orders of magnitude over a cell, in the Wyner model user locations are fixed and the interference intensity is characterized by a single fixed parameter. Although it is a fairly extreme simplification, the Wyner model has been extensively used to analyze cellular networks. Does it capture...
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