Alhamdulillah

Bismillah

Thanks to Allah for His Great Blessing and Solawat to our beloved Prophet (P.B.U.H). This thesis is the outcome of years of research that has been done since I came to IIUM as a postgraduate student. By that time, I have worked with a great number of people whose contribution in various ways to the research and the making of the thesis deserved special mention. It is a pleasure to convey my gratitude to them all in my humble acknowledgment.

In the first place I would like to record my gratitude to Assoc. Prof. Dr. F. A. for his supervision, advice, and guidance from the very early stage of this research as well as giving me opportunities to present my findings at many international conferences throughout the work.

In addition, I would also like to express my thanks to U.niversiti T.eknologi M.ARA for generously funding my studies. Their financial support has given me opportunity of experiencing comfortable learning facilities and environment.

And of course, I am thankful for being blessed with support and understanding by my parents and siblings. They stand by me at all occasions, through the happy and tough times. To them, I am still their clumsy sister and daughter who would still go to them no matter what. They have been my inspiration all this while.

I also gratefully acknowledge my Networking Research Group Lab members: Bro Zeldi, Dr. Omer, Sis Naimah and Sis Fariza for their advice, supervision, and crucial contribution, which made them a backbone of this research and so to this thesis. I am grateful in every possible way and hope to keep up our collaboration in the future. Our friendship has also become a memorable one.

It is also a pleasure to pay tribute to Mr Ronan de Renesse and Mr Vinod Kone for their kindness of answering my inquiries regarding QoS in MANETs through emails. They have been very generous in providing the information that I require.

Last but not least, collective and individual acknowledgments are also owed to my colleagues at IIUM whose presence somehow perpetually refreshed, helpful, and memorable. Many thanks go in particular to Sis Shuhada, Sis Rozaidah, Sis Winda, Sis Zakiah, Sis Yusnita, Sis Hasimah, Sis Hanani, Sis Syazilawati, Sis Iman, Sis Siti, Bro Iwan, Bro Turnad, Bro Hakim and Bro Amart for giving me such a pleasant time during my study, especially for the exhilarating time we spent together.

Finally, I would like to thank everybody who was important to the successful realization of this thesis as well as expressing my apology that I could not mention personally one by one.

Wallahul musta'an