Performance of IEEE 802.11 medium access control protocol over a wireless local area network with distributed radio bridges

TitlePerformance of IEEE 802.11 medium access control protocol over a wireless local area network with distributed radio bridges
Publication TypeConference Paper
Year of Publication1999
AuthorsChow, C. C., and V. C. M. Leung
Conference NameWireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Pagination535 -539 vol.1
Keywords2D network model, access delay performance, additive white Gaussian noise, AWGN, capture effect, capture ratio, carrier sense multiple access, CDMA/CD, channel model, computer simulations, coverage area, delays, distributed radio bridges, distributed wireless local area network, diversity reception, IEEE 802.11 medium access control protocol, linear network, log normal distribution, log-normal shadowing, macrodiversity, radio bridges, radio channel, Rayleigh channels, Rayleigh fading, receiver, throughput performance, wireless LAN, wireless terminals
Abstract

In this paper, the throughput and access delay performance of a distributed wireless local area network employing the IEEE 802.11 medium access control protocol is analyzed by computer simulations. The proposed network uses the same radio channel over the entire coverage area for wireless terminals to communicate with multiple radio bridges (RBs) with macrodiversity. A channel model with additive white Gaussian noise, log-normal shadowing and Rayleigh fading is considered, with or without capture effect at each receiver. Without capture effect the throughput of a linear network with 4 RBs is improved by at least 120% over that with one RB. With capture effect, the increase in performance with number of RBs is reduced as the capture ratio is increased. A two dimensional network model is also considered and found to have slightly different performance

URLhttp://dx.doi.org/10.1109/WCNC.1999.797883
DOI10.1109/WCNC.1999.797883

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