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I would like to dedicate my work to my parents, Mr. and Mrs. A.Sreedhar Rao and my brother Seshu, for their constant prayers and encouragement throughout my life. I am very grateful to my advisor Dr. A. Srivastava for his guidance, patience and understanding throughout this work. His suggestions, discussions and constant encouragement have helped me to get a deep insight in the field of VLSI design. my committee. I would like to thank Dr. P. K. Ajmera and Dr. Martin Feldman for being a part of I am very thankful to Electrical Engineering Department, for supporting me financially during my stay at LSU. I would like to thank my friend Miss. Chandra Srinivasan for her constant love and support for me through out my life. I take this opportunity to thank my friends Anand, Uday, Vijay and Harish for their help and encouragement at times I needed them. I would also like to thank all my friends here who made my stay at LSU an enjoyable and a memorable one. Last of all I thank GOD for keeping me in good health and spirits throughou