Thanks to Almighty Allah for providing us with the strength, enthusiasm and determination for completing our thesis work and project. We have our heartfelt gratitude, deep respect and appreciation to our supervisor, Capt. M. Mahbubur Rahman, Dean, Faculty of Electrical and Computer Engineering (ECE), Military Institute of Science and Technology, Dhaka, Bangladesh for his expert, unceasing supervision, motivation, encouragement and kind guidance. His knowledge and priceless advice has largely contributed in finding our way through the research world. We also gratefully acknowledge the generous support of the Institute and share our joy of success.