ACKNOWLEDGEMENTS

I would like to thank my Ph.D. advisor Dr. Sajal K. Das for providing the oppor-tunity to work on my doctoral degree at the Center for Research in Wireless Mobility and Networking (CReWMaN). He has been extremely helpful in developing the direction of my research. I have been also fortunate enough to work with Dr. Mainak Chatterjee. One of the best things that happened to me in graduate school was working with Professor Kalyan Basu. He has been a motivating factor to me in all aspects of life. I am also thankful to my committee members for being kind enough to serve in my doctoral committee. During the August of 2005, I started working with Sumantra Kundu who is a graduate student at CReWMaN. The collaboration has been extremely fruitful and re-warding. I would also like to thank the other members of CReWMaN who has made my life enjoyable as a Ph.D. student. I would also like to thank my beloved friend Kuver Sinha for being there for me during all the crisis I have faced. I am also indebted to the Computer Science and Engineering department at the University of Texas, Arlington for funding me during my entire period of graduate study without which I would definitely not have been able to complete my doctoral studies. Last, but definitely not the least, I would like to thank my parents and my family for providing constant emotional and moral support without which I would not have reached this far. My work, life and existance stand on their sacrifices