Loss probability estimation and control for OFDM/TDMA wireless systems considering multifractal traffic characteristics

  • Authors:
  • Flávio Henrique Teles Vieira;Flávio Geraldo Coelho Rocha;Josemar Alves dos Santos, Jr.

  • Affiliations:
  • School of Electrical and Computer Engineering (EEEC), Federal University of Goiás, Av. Universitária, n. 1488, Qd 86, Bloco A, 3 piso, 74605-010, Setor Leste Universitário, Goií ...;School of Electrical and Computer Engineering (EEEC), Federal University of Goiás, Av. Universitária, n. 1488, Qd 86, Bloco A, 3 piso, 74605-010, Setor Leste Universitário, Goií ...;School of Electrical and Computer Engineering (EEEC), Federal University of Goiás, Av. Universitária, n. 1488, Qd 86, Bloco A, 3 piso, 74605-010, Setor Leste Universitário, Goií ...

  • Venue:
  • Computer Communications
  • Year:
  • 2012

Quantified Score

Hi-index 0.24

Visualization

Abstract

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.