Tutorial Speaker – Prof. Santi P. Maity


Cooperative Cognitive Radio Networks: Energy-Spectral Efficiency, Harvesting and Outage Secrecy


Biography

Prof. Santi P. Maity
Professor, Dept. of Information Technology,
Indian Institute of Engineering Science and Technology,
Shibpur, West Bengal, India




Santi P. Maity received his B. E. degree in Electronics and Communication Engineering from National Institute of Technology, Durgapur (formerly known as REC Durgapur) and M. Tech in Microwaves with specialization in digital communication, from the University of Burdwan, West Bengal, India in 1993 and 1997, respectively. He did his Master project in Time and Frequency Section, National Physical Laboratory, New Delhi, India in 1997. He received his Ph. D degree in Engineering from Indian Institute of Engineering Science and Technology, Shibpur (formerly Bengal Engineering and Science University, Shibpur), India in 2008 in association with Machine Intelligence Unit, Indian Statistical Institute, Kolkata. He received couple of Post-Doctoral research positions in different universities-Nanyang Technological University, Singapore; Laboratoire des Signaux et Systems, France and University of Vigo, Spain. He did his Post-Doctoral research for one year (January 2009 to July 2009 and February 2011 to July 2011) in the “Laboratoire des Signaux et Systems (CNRS-Supelec-Universite Paris-Sud 11)” in France. He is at present working as Professor since September, 2012 in Indian Institute of Engineering Science and Technology, Shibpur, India. He was Head for the Department of Information Technology in IIEST, Shibpur from February, 2012 to 1st February, 2014. His research interests include multicarrier (MC)-CDMA, Cognitive Radio Networks, Compressive Sampling, Digital Watermarking, Secret Sharing, Medical Image Reconstruction at Compressed Sensing and Segmentation, Blood Vessels and Lesion Detection on Retinal Images. He has published about 190 research papers in International Journals and Conferences including IEEE Transactions/Journals, Letters, Elsevier Science, Springer Verlag, World Scientific etc. He completed successfully the Govt. of India sponsored project on Wireless Communication (MC-CDMA) as Principal Investigator on 2008-2010, supervised several Master and 6 Ph. D thesis and many others are working for Ph. D. He has delivered about 40 invited lectures and tutorial talk in International and National Conferences, National Seminars, Workshops, Faculty Development Programs and acted as Coordinator, TPC Member, Program Chair(s) and General Chair(s) in International Conferences.


Abstract

Cognitive Radio (CR) has emerged as a promising solution to overcome the bandwidth problem in wireless communications through spectrum sensing and thereby opportunistically accessing the vacant spectrum slots by secondary users (SUs) leading to an increase in spectral efficiency (SE). Cooperative Cognitive Radio Network (CCRN) enables a fast and reliable spectrum sensing over the licensed/primary user (PU) band and consequent throughput improvement by power saving operation of the cooperative relay nodes that leads to an increase in energy efficiency (EE). However, simultaneous EE and SE maximization is difficult, a tradeoff exists that needs an efficient solution to maximize this bi-objective problem while meeting certain other goals, namely sensing reliability, cooperative SE for primary network, fairness in SE for each SU, SU power budget etc. Furthermore, the relay nodes in CCRN are assumed to be battery driven and power limited; hence needs frequent recharging and/or replacement to enhance network lifetime. Energy harvesting appears as a form of green cognitive communications having an impact on EE-SE trade-off. CCRN is sometimes vulnerable to different attacks, for example, spectrum sensing data falsification (SSDF) attack, which demands fusion strategy to be secured or reliable or improved sensing to be done in presence of PUEA (primary user emulated attack) or eavesdropping in multi-hop cooperative data transmission. This tutorial will present an in-depth discussion on Energy-Spectral efficiency trade-off, energy harvesting- issues and challenges, outage secrecy in cooperative communication- in a wide perspective ranging from theory to practice, from architecture to algorithms, and from policy to implementation.