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On Cooperative Broadcast in MANETs with Imperfect Clock Synchronization

Sahin, Serdar and Cipriano, Antonio and Poulliat, Charly and Boucheret, Marie-Laure On Cooperative Broadcast in MANETs with Imperfect Clock Synchronization. (2019) In: IEEE Military Communications Conference (MILCOM 2018), 29 October 2018 - 31 October 2018 (Los Angeles, CA, United States).

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Official URL: https://doi.org/10.1109/MILCOM.2018.8599770

Abstract

This paper considers the evaluation of the characteristics of the channel that arises in the context of cooperative broadcast in mobile ad-hoc networks (MANETs) with practical radios, and tackles the problem of detection with affordable frequency domain receivers. When multiple nodes use cooperative signalling to transmit a signal to a destination, their clock offsets, oscillator drifts, and non-negligible propagation delays yield an equivalent doubly-selective channel seen from any destination node's point-of-view. For demanding applications with high data rate requirements, this equivalent cooperative channel needs to be mitigated with physical layer signal processing. In the first part of the paper, statistical characteristics of the power-delay profile of the equivalent cooperative transmission channel are modelled to gain a better understanding of its behaviour. This preliminary analysis points out that equalization is required to successfully carry out cooperative broadcast. Next, conventional linear frequency domain equalizer (FDE) and a recently proposed non-linear FDE based on Bayesian inference, are considered for the equalization of the aforementioned channels. The detection performance of these receivers is evaluated in some critical channels which can jeopardize the robustness of the cooperative links, identified with the preliminary statistical analysis. Numerical results indicate that, non-linear but low-complexity frequency domain receivers are attractive solutions for cooperative broadcast, especially within high-data rate applications.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to IEEE editor. The definitive version is available at http://ieeexplore.ieee.org This papers appears in Proceedings of MILCOM 2018 - Track 1 Electronic Electronic ISSN: 2155-7586 ISBN: 978-1-5386-7185-6 The original PDF of the article can be found at: https://ieeexplore.ieee.org/document/8599770 Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
HAL Id:hal-02191801
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Thales (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
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Deposited On:10 Jul 2019 14:34

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