ARTIFICIAL NEURAL NETWORKS BASED LOCALIZATION FRAMEWORK FOR WIRELESS SENSOR NETWORKS A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Information Technology Submitted by Ashish Payal 248/Ph.D/USIT/07 Under the supervision of Dr. B. V. R. Reddy Dr. C. S. Rai Professor, USICT Professor & Dean USICT GGSIP University, New Delhi GGSIP University, New Delhi University School of Information & Communication Technology Guru Gobind Singh Indraprastha University Dwarka, New Delhi – 110078 March 2016