Abstract
The performance of wireless local area networks supporting video streaming applications, based on MPEG-2 video codec, in the presence of interference is here dealt with. IEEE 802.11g standard wireless networks, that do not support QoS in according with IEEE 802.11e standard, are, in particular, accounted for and Bluetooth signals, additive white Gaussian noise, and competitive data traffic are considered as sources of interference. The goal is twofold: from one side, experimentally assessing and correlating the values that some performance metrics assume at the same time at different layers of an IEEE 802.11g WLAN delivering video streaming in the presence of in-channel interference; from the other side, deducing helpful and practical hints for designers and technicians, in order to efficiently assess and enhance the performance of an IEEE 802.11g WLAN supporting video streaming in some suitable setup conditions and in the presence of interference. To this purpose, an experimental analysis is planned following a cross-layer measurement approach, and a proper testbed within a semianechoic chamber is used. Valuable results are obtained in terms of signal-to-interference ratio, packet loss ratio, jitter, video quality, and interference data rate; helpful hints for designers and technicians are finally gained.
Highlights
Wireless local area networks (WLANs) compliant with the family of IEEE 802.11 standards are nowadays one of the most successful emerging network technologies in the wireless communication scenario [1]
The length of delivered packets has been monitored through a digital signal oscilloscope (DSO) connected to a receiving antenna positioned in the chamber
Preliminary measurements have been performed forcing the WLAN to operate in multicast mode and with additive white Gaussian noise (AWGN) interference and signal-to-interference power ratio (SIR) within the interval 6–20 dB
Summary
Wireless local area networks (WLANs) compliant with the family of IEEE 802.11 standards ( known as Wi-Fi standards) are nowadays one of the most successful emerging network technologies in the wireless communication scenario [1] They are commonly used to provide wireless access to the Internet and network connectivity for personal digital assistants, laptops, and modern consumer electronics. The IEEE 802.11b and g standards are allowed to operate in the unlicensed and crowded 2.4 GHz industrial scientific medical (ISM) band, in which several different devices may operate simultaneously, like, for instance, IEEE 802.15.4 (Zig-Bee) [7] and IEEE 802.15.1 (Bluetooth) [8] apparatuses, microwave ovens, cordless phones, baby monitors, security cameras, and so forth, [9].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: EURASIP Journal on Wireless Communications and Networking
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
