Loss probability estimation and control for OFDM/TDMA wireless systems considering multifractal traffic characteristics
| Autor: | Flávio Geraldo Coelho Rocha, Flávio Henrique Teles Vieira, Josemar Alves dos Santos |
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| Rok vydání: | 2012 |
| Předmět: |
Queueing theory
Computer Networks and Communications Orthogonal frequency-division multiplexing business.industry Computer science Quality of service ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Real-time computing Traffic model Time division multiple access Traffic policing Multifractal system Multiplexing Time-division multiplexing Computer Science::Networking and Internet Architecture Wireless business Computer network |
| Zdroj: | Computer Communications. 35:263-271 |
| ISSN: | 0140-3664 |
| DOI: | 10.1016/j.comcom.2011.09.015 |
| Popis: | In this paper, we analyze the queueing performance in terms of loss rate of an OFDM (orthogonal frequency-division multiplexing)/TDMA (time division multiplexing access) based wireless system taking into account the multifractal behavior of the wireless traffic flows. To this end, first, we show evidences of multifractal characteristics on wireless traffic traces. These findings motivated us to propose a traffic policing and control scheme based on a multifractal envelope process in order to maintain the traffic flows well-behaved, i.e., in accordance to the desired QoS parameters. Furthermore, by assuming a multifractal traffic model, we derive a data loss probability equation for wireless traffic flows that was applied to the OFDM/TDMA based wireless system. Simulations and comparisons to other methods were carried out in order to verify the efficiency of the proposed traffic policing scheme as well as of the loss probability estimation approach. |
| Databáze: | OpenAIRE |
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