Performance Analysis of WLAN using OPNET
Tazeem Ahmad Khan1, M T Beg2, M A Khan3

1Tazeem Ahmad Khan, Research Scholar, Department of ECE, F/o Engineering & Technology, JMI, (New Delhi), India.
2M.T Beg, Professor & Head, Department of E&C, F/o Engineering & Technology, JMI, (New Delhi), India.
3M.A Khan, Professor HoS, Department of Electrical Engineering Section, F/o Engineering & Technology, JMI, (New Delhi), India.
Manuscript received on 15 April 2013 | Revised Manuscript received on 22 April 2013 | Manuscript Published on 30 April 2013 | PP: 1-4 | Volume-2 Issue-5, April 2013 | Retrieval Number: C0399022313/13©BEIESP
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Abstract: Abstract- In this paper analyze the performance of Wireless Local Area Networks (WLANs), it is important to identify what types of network settings can cause bad performance. Low throughput, high packet loss rate, delayed round trip time (RTT) for packets, increased retransmissions, and increased collisions are the main attributes to look for when analyzing poor network performance. We use the OPNET Modeler to simulate the RTS/CTS mechanism to evaluate the performance of IEEE 802.11 MAC protocol. We have simulated two scenarios with and without RTS/CTS mechanism enabled on network nodes. We have concluded our findings by comparing the total WLAN retransmissions, data traffic sent/received, WLAN Delay of two scenarios. RTS/CTS mechanism is helpful to reduce the number of retransmissions if hidden node problem persists in network scenarios.
Keywords: RTS/CTS, Wireless LAN, MAC Layer, Opnet.

Scope of the Article: Performance Evaluation of Networks