Add to ORKGIt gives me immense pleasure to acknowledge few people who have been with me during my work and have been a constant source of inspiration. I would like to thank Dr. Zhou Wang, my supervisor, instructor, and my mentor at The University of Texas at Arlington for his immense support, constant guidance and resourceful inspiration. I am obliged to him for his belief in me to carry over the work he initiated. I would like to thank Dr. Seoung Bum Kim for his guidance and support during the implementation of our work. His inputs and feedbacks have been very critical in this work. I would like to thank Dr. K R Rao for his interest in the research work and being part of the thesis committee. I would like to take this opportunity to thank Qiang Li fo...