Khalil Fakih

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Precoding problem in multiple-input multiple-output (MIMO) ad hoc networks is addressed in this work. Firstly, we consider the problem of maximizing the system mutual information under a power constraint. In this context, we give a brief overview of the nonlinear optimization methods, and systematically we compare their performances. Then, we propose a fast(More)
This paper presents a novel analytical model for wireless ad hoc networks. Based on the strong points in the literature, an accurate performance model for IEEE 802.11 MAC protocol is proposed. Moreover, by introducing the properties of spatial reuse, we extend the proposed model to support the throughput analysis of wireless ad hoc networks with directional(More)
In this paper, we evaluate through analytical modeling, the performance of ad hoc networks when the nodes are endowed with M-element antenna array. We first derive the loss probability due to fading when performing a simple beamforming strategy and we present an accurate analytical model for the performance of IEEE 802.11 MAC protocol. We then extend the(More)
Maximizing the system mutual information for MIMO ad hoc networks is considered in this paper. We first give a brief overview of the non-linear optimization methods and systematically we compare their performances. Then we propose a fast and distributed algorithm based on the quasi Newton methods to give a lower bound of the system capacity of MIMO ad hoc(More)
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