NDLI: Two-dimensional Markov model for throughput analysis of IEEE 802.11 Distributed Coordination Function in non ideal channel with capture effects

Content Provider	IEEE Xplore Digital Library
Author	Alsbou, N. Refai, H.
Copyright Year	2012
Description	Author affiliation: Department of Electrical and Computer Engineering, University of Oklahoma, Norman OK 73019 (Alsbou, N.; Refai, H.)
Abstract	Wireless technologies are emerging as an important component of our daily life. Distributed Coordination Function (DCF) is the basis of IEEE 802.11 WLAN MAC protocol, which uses Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) protocol and binary slotted exponential back-off scheme. DCF implementation specified by the IEEE 802.11 standard reset the contention window (CW) to minimum value upon a successful transmission. Although the newCW is minimal the congestion level goes gradually to minimum, causing the node to probably waste time and channel bandwidth going through several collisions and retransmissions before reaching a CW value corresponds to the congestion level. This paper modifies the implementation to reduce the window to half its size after a successful transmission. The paper uses analytical and simulation analysis to show throughput improvements under ideal and non-ideal channel with channel induced errors and capture effect. When compared to the standard implementation, throughput has improved for both ideal and non ideal channel.
Starting Page	316
Ending Page	321
File Size	2221372
Page Count	6
File Format	PDF
ISBN	9781457713781
e-ISBN	9781457713798
DOI	10.1109/IWCMC.2012.6314223
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-08-27
Publisher Place	Cyprus
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	IEEE 802.11 Analytical models IEEE 802.11 Standards CSMA/CA DCF Markov processes Markov modeling Throughput Mathematical model Equations Payloads
Content Type	Text
Resource Type	Article

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