in this paper, the performance of IEEE 802.Ilb and 802.1 l g Wireless Local Area Networks (WLANs) performance under barrage jamming is evaluated theoretically and using measurements. Single WLAN ad-hoc link performance is measured when receiver station is jammed. W M link vulnerability assessment is based on throughput and Packet Error Rate (PER), which depends on d$-ferent Physical (PHY) layer characteristic. WLAN system is found to be more tolerant to narrow-band jamming than tu wideband-band jamming. In 802.1 I b WLAN, processing gain increases the tolerance to jamming whereus coding and diferent modulations are used to improve the link performance in 802.1 l g WLAN. Measured link throughputs are far from theuretical values, especially when high datu rate modes are used.
This paper investigates how the performance and capacity of the IEEE 802.11 medium access control (MAC) layer is affected by pulse jamming, using a time-driven simulation program in C language implemented at the Communications Laboratory of the Helsinki University of Technology. The simulations demonstrate the effect of pulse duration and pulse repetition interval on the IEEE 802.11 wireless local area network (WLAN) capacity, defined in terms of simultaneous Voice over IP (VoIP) connections. Under normal conditions (i.e., no jamming), the WLAN can support a certain number of real-time VoIP connections, taking into account the fact that VoIP traffic cannot tolerate excessive delays caused by multiple retransmissions or the build-up of VoIP packets in the transmission buffers of the wireless stations. The simulations show that during severe pulse jamming, the number of supported VoIP connections is substantially decreased.
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.