In recent years, WIMAX technology has witnessed significant advancements, particularly in its capacity to support diverse multimedia applications such as voice and video. As the demand for high-quality, real-time communication continues to surge, the integration of voice and video applications within WIMAX networks has become a focal point for research and development. This thesis focuses on the optimization of multimedia communication in WIMAX networks, addressing different performance metrics such as voice Mos, jitter, voice end-to-end, video delay, voice delay and video end-to-end delay. Building upon earlier studies, the research endeavors to identify and implement improvements that contribute to a more seamless and efficient communication experience. The study commences with an in-depth review of existing literature, highlighting the challenges and advancements in multimedia communication within WIMAX networks. Subsequently, a comprehensive methodology is developed to measure and analyze voice throughput, jitter, and video end-to-end delay. Real-world scenarios are simulated to ensure the applicability of the findings to practical network environments. To achieve enhanced voice end to end delay, jitter as well as throughput, Quality of Service (QoS) implementations are investigated. Jitter mitigation techniques, are explored to minimize disruptions in voice transmission. Furthermore, innovative approaches to reduce video end-to-end delay, are examined. The experimental results demonstrate notable improvements in voice throughput, better jitter, and minimized video end-to-end delay compared to earlier studies. The proposed enhancements contribute to a more reliable and efficient multimedia communication experience in WIMAX networks, catering to the increasing demands of modern communication systems.

In this thesis we concluded mainly two types of studies; one is analytical and second is Practical which is based on OPNET Simulator. Analytic Study concluded the behavior of each Trajectory System like EXAM, FIXEDVECTOR&MANET DOWN LEFT. All the Network Performance has depended on its Trajectory System. Each different Trajectory System has different processing Mechanism according to their environmental scenarios. From Simulator aspects we concluded that which is major factor that can affect the performance of

[1] F.E.Retnasothie, M.K. Ozdemir , T.Y’ Cek, H. Celebi, J. Zhang, and R.Muththaiah, “Wireless IPTV over WIMAX: Challenges and Applications”, Proceedings of IEEE WAMICON, 2006 [2] Deepak Pareek, WIMAX Taking wireless to the MAX, Auerbach Publications, Taylor and Francis Group, Boca Raton, New York, 2006 [3] https://www.engineersgarage.com/contribution/WIMAX-vs-Wi-Fi [4] https://www.investopedia.com/terms/f/EXAM.asp [5] https://www.tempus600.com/blood-transport/EXAM-first-in-first-out [6] Homg, M.-F., Lee, W.-T., Lee, K.-R., Kuo, Y.-H. (2001) An Adaptive Approach to Weighted Fair Trajectory with QoS Enhanced on IP Network. IEEE Catalogue No. 01 CH37239. [7] Brunonas Dekeris, Tomas Adomkus and Aurelijus Budnikas, Analysis of QoS Assurance Using Weighted Fair Trajectorying (VECTOR) Scheduling Discipline with Low Latency Trajectory (LLQ), Information technology interfaces ITI 2006. [8] https://ivanyu.wordpress.com/2011/04/21/modified-weighted-round-robin-modified-deficit-round-robin/ [9] http://what-when-how.com/qos-enabled-networks/queuing-and-scheduling-qos-enabled-networks-part-3/ [10] Mohammad M. Shurman , Reem M. Al-Rashdan , Majeda K. Al-Bataineh “Comparison Study of EXAM and FIXED Queuing Mechanisms On 5G Cellular Network” 2018 9th International Conference on Information and Communication Systems (ICICS). [11] Dr. Mustafa ElgiliMustafa , “The Effect of Queuing Mechanisms First in First out (EXAM), Priority Queuing (PQ) and Vector(VECTOR) on Network’s Routers and Applications”, International Journal of Engineering Innovation & Research Volume 4, Issue 1, ISSN: 2277 – 5668.

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