The capability of the EDCA mechanism to support voice traffic in a mixed voice/data transmission over 802.11e WLANs - an experimental investigation

While fading, in general, is detrimental to accurately localizing a target, fading correlation between adjacent receivers may be exploited to improve localization accuracy. Therefore, this paper presents a novel wireless localization scheme that employs a combination of cross-correlation between shadow fading noise and copula technique to recursively estimate the location of a transmitter. A stochastic filter that models multipath fading as an Ornstein-Uhlenbeck process followed by a Generalized Auto Regressive Conditional Heteroskedasticity (GARCH) filtering is proposed to extract shadow fading residuals from measured RSSI values. Subsequently, Student-t Copula function is used to create the log likelihood function, which acts as the cost function for localization, by combining spatial shadow fading correlation arising among adjacent receivers due to pedestrian traffic in the area. Maximum Likelihood Estimate (MLE) is used for position estimation as it inherits the statistical consistency and asymptotic normality. The performance of our proposed localization method is validated over simulations and hardware experiments.

show abstract

Adaptive channel access tuning and QoS support for multimedia applications over IEEE 802.11e WLANs

Tüysüz

Mantar

2011

ICIMU 2011 : Proceedings of the 5th International Conference on Information Technology &Amp; Multimedia

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

The capability of the EDCA mechanism to support voice traffic in a mixed voice/data transmission over 802.11e WLANs - an experimental investigation

Abstract: Narbutt, M., Davis, M.: The capability of the EDCA mechanism to support voice traffic in a mixed voice/data transmission over 802.

Cited by 12 publications

References 19 publications

Contention Window MAC parameters tyning for wireless multimedia Sensor Networks

Contention Window MAC parameters tyning for wireless multimedia Sensor Networks

Localization of Objects Using Cross-Correlation of Shadow Fading Noise and Copulas

Adaptive channel access tuning and QoS support for multimedia applications over IEEE 802.11e WLANs

Contact Info

Product

Resources

About