R. Kumar received his Ph.D. degree from SRM University, India (2009), Master of Science from BITS Pilani (1993) and bachelor’s degree in Electronics and Communication Engineering from Bharathidasan University, 1989. He is working as a professor in the Department of Electronics and Communication Engineering, SRM University, Chennai, India. His areas of interest include spread spectrum techniques, wireless communication, cognitive radio, wireless sensor networks, and MIMO–OFDM systems. He has supervised a number of undergraduate, postgraduate as well as Ph.D. students in the area of wireless communication. His research work led him to publish more than 100 papers in journals and in conferences.