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All Journal Bulletin of Electrical Engineering and Informatics
Zaynab Mahir Abdel-Ameer
AL- Nahrain University
Electrical & Electronics Engineering

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Performance analysis and evaluation of IEEE 802.11 distributed coordination function using OPNET Zaynab Mahir Abdel-Ameer; Abdul Kareem A. Najem Alaloosy; Khattab M. Ali Alheeti
Bulletin of Electrical Engineering and Informatics Vol 9, No 6: December 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v9i6.2477

Abstract

This paper discusses the distributed coordination function (DCF) access mechanism which is a carrier sense multiple access with collision avoidance (CSMA/CA) scheme. Simulation projects for different DCF performance parameters have been built using the OPNET network simulator. The projects are mainly basic service set (BSS) topology simulated under different parameter values (data rate, fragmentation, RTS/CTS, number of nodes, and load condition). Simulation results show when the DCF access mechanism is better under what load condition, and how to choose the best fragmentation threshold and other access-mechanism specific parameters according to the network conditions. Simulation results were validated against a theoretically calculated maximum throughput (the simulation maximum throughput was about 70% of the theoretically calculated maximum throughput). 
Co-Authors Abdul Kareem A. Najem Alaloosy Khattab M. Ali Alheeti