University of Khartoum

Performance Analyses of VoIP over WLAN Networks

Performance Analyses of VoIP over WLAN Networks

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Title: Performance Analyses of VoIP over WLAN Networks
Author: Elmubarak, Mashaer Mohammed ALhassan
Abstract: This Research studies the properties and the performance three Wireless LAN technologies: 802.11b direct sequence, 802.11a, and 802.11 infrared when they are used in VoIP applications, and compares between them to determine which is better. To evaluate the performance of the three technologies, a simulation was performed using OPNET 17.5 modeler. The performance of the technologies was evaluated according to the most important performance factors of VoIP, which are delay, jitter, Mean Opinion Score (MOS-user evaluation), packet loss, and throughput. The results obtained from simulation showed that the technology 802.11a provides the best performance, it has the least delay among all techniques, and it has good throughput. However, it needs very expensive equipments. So, it is good to deploy in large networks. 802.11 b has good MOS because it is cheaper than 802.11 and it provides good performance. For 802.11 infrared, the performance is poor compared to the other technologies, but the equipments are very cheap and highly available. So, it is recommended to use in small networks when the amount of data transmitted is small.
Description: 101page
URI: http://khartoumspace.uofk.edu/handle/123456789/18389
Date: 2016-01-11


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