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Model Order Selection for Collision Multiplicity Estimation

Escrig, Benoît Model Order Selection for Collision Multiplicity Estimation. (2012) In: Wireless Telecommunications Symposium (WTS), 2012, 18-20 Apr 2012, 18 April 2012 - 20 April 2012, London, UK (London, United Kingdom).

(Document in English)

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Official URL: http://dx.doi.org/10.1109/WTS.2012.6266100


The collision multiplicity (CM) is the number of users involved in a collision. The CM estimation is an essential step in multi-packet reception (MPR) techniques and in collision resolution (CR) methods. We propose two techniques to estimate collision multiplicities in the context of IEEE 802.11 networks. These two techniques have been initially designed in the context of source separation. The first estimation technique is based on eigenvalue statistics. The second technique is based on the exponentially embedded family (EEF). These two techniques outperform current estimation techniques in terms of underestimation rate (UNDER). The reason for this is twofold. First, current techniques are based on a uniform distribution of signal samples whereas the proposed methods rely on a Gaussian distribution. Second, current techniques use a small number of observations whereas the proposed methods use a number of observations much greater than the number of signals to be separated. This is in accordance with typical source separation techniques.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to IEEE editor. This conference publication was published in Wireless Telecommunications Symposium (WTS), 2012. ISSN: 1934-5070 - Print ISBN: 978-1-4577-0579-3 - The original PDF of the article can be found at http://dx.doi.org/10.1109/WTS.2012.6266100
HAL Id:hal-04023824
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)
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)
Laboratory name:
Deposited On:19 Dec 2012 16:01

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