A study on time domain deterministic-stochastic model of spectrum usage in WLAN



Umebayashi, K and Lopez-Benitez, M
(2018) A study on time domain deterministic-stochastic model of spectrum usage in WLAN. In: IEEE Wireless Communications and Networking Conference (WCNC 2018), 4th IEEE International Workshop on Smart Spectrum (IWSS 2018), 2018-4-16 - 2018-4-16, Barcelona, Spain.

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Abstract

Duty cycle (DC) has been used to express the deterministic and stochastic aspects of spectrum usage. Specifically, a deterministic model for the mean of the duty cycle (MDC) has been proposed in a previous work. On the other hand, the observed DC (O-DC) during short time duration has randomness and a stochastic model is used to express the randomness. In this paper, we extend the conventional approach to a combined deterministic-stochastic (DS) model which represents both the deterministic and stochastic aspects. For the distribution of the O-DC, the beta distribution has been used as stochastic model, but we employ a mixture of beta distributions. The mixture-beta distribution can achieve higher accuracy but requires more capacity for data storage in spectrum usage measurements since it has a higher number of parameters than the beta distribution. For this issue, we employ regression analysis in DS-model to reduce the number of parameters while retaining the accuracy. We show the validity of DS-model based on exhaustive spectrum measurements in IEEE 802.11-based wireless local area networks.

Item Type: Conference or Workshop Item (Unspecified)
Uncontrolled Keywords: 46 Information and Computing Sciences, 4006 Communications Engineering, 40 Engineering
Depositing User: Symplectic Admin
Date Deposited: 02 Feb 2018 15:58
Last Modified: 21 Jun 2024 02:02
DOI: 10.1109/wcnc.2018.8377445
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3017362