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Published in: EURASIP Journal on Wireless Communications and Networking 1/2009

Open Access 01-12-2009 | Research Article

Transmission Strategies in MIMO Ad Hoc Networks

Authors: Khalil Fakih, Jean-François Diouris, Guillaume Andrieux

Published in: EURASIP Journal on Wireless Communications and Networking | Issue 1/2009

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Abstract

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 and distributed algorithm based on the quasi-Newton methods to give a lower bound of the system capacity of MIMO ad hoc networks. Our proposed algorithm solves the maximization problem while diminishing the amount of information in the feedback links needed in the cooperative optimization. Secondly, we propose a different problem formulation, which consists in minimizing the total transmit power under a quality of signal constraint. This novel problem design is motivated since the packets are captured in ad hoc networks based on their signal-to-interference-plus-noise ratio (SINR) values. We convert the proposed formulation into semidefinite optimization problem, which can be solved numerically using interior point methods. Finally, an extensive set of simulations validates the proposed algorithms.

Publisher note

To access the full article, please see PDF.
Open AccessThis article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://​creativecommons.​org/​licenses/​by/​2.​0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Metadata
Title
Transmission Strategies in MIMO Ad Hoc Networks
Authors
Khalil Fakih
Jean-François Diouris
Guillaume Andrieux
Publication date
01-12-2009
Publisher
Springer International Publishing
DOI
https://doi.org/10.1155/2009/128098

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