(ii) ACKNOWLEDGEMENT I would like to place on record my deep sense of grati tude to Prof. Suman Lata Tripathi , HOD-Dept. Of Electronics & Communication E ngineering , Kashi Institute Of Technology , Varanasi for her generous guidance, help and useful suggestions. I express my sincere gratitude to Asst. Prof. Pushpraj Singh Dept. Of Electronics & Communication Engineering , Kashi Institute Of Technology, Varanasi for his stimulating guidence, continous encrougement and supervision through out the course of present work. I also to thanks to Asst. Prof. Priti Guptaand Other Colleagues for attending my seminars and for their insightful comments and constructive suggestions to improve the quality of this project work. I am extremely thankful to Dr. P.N. Tiwari( Director), Kashi Institute Of Technology, Varanasi for providing me infrastructural facilities to work in, without which this work would not have been possible.
