Aditya K. Jagannatham
Prof. Aditya K. Jagannatham received his Bachelors degree from the Indian Institute of Technology, Bombay and M.S. and Ph.D. degrees from the University of California, San Diego, U.S.A.. From April '07 to May '09 he was employed as a senior wireless systems engineer at Qualcomm Inc., San Diego, California, where he worked on developing 3G UMTS/WCDMA/HSDPA mobile chipsets as part of the Qualcomm CDMA technologies division. His
research interests are in the area of next-generation wireless communications and networking, sensor and ad-hoc networks, digital video processing for wireless systems, wireless 3G/4G cellular standards and
CDMA/OFDM/MIMO wireless technologies. He has contributed to the 802.11n high throughput wireless LAN standard and has published extensively in leading international journals and conferences. He was awarded the CAL(IT)2 fellowship for pursuing graduate studies at the University of California San Diego and in 2009 he received the Upendra Patel Achievement Award for his efforts towards developing HSDPA/HSUPA/HSPA+ WCDMA technologies at Qualcomm. Since 2009 he has been a faculty member in the Electrical Engineering department at IIT Kanpur, where he is currently an Associate Professor, and is also associated with the BSNL-IITK Telecom Center of Excellence (BITCOE). At IIT Kanpur he has been awarded the P.K. Kelkar Young Faculty Research Fellowship (June 2012 to May 2015) for excellence in research. His popular video lectures for the NPTEL (National Prgramme on Technology Enhanced Learning) course on Advanced 3G and 4G Wireless Mobile Communications can found at the following YouTube link (NPTEL 3G/4G).
MIMO-STBC Cooperative Communication, Sequential Bartlett Spectral Detection and Multicell Cooperative Beamforming for Disaster Management
This talk will focus on some recent research in our lab in the area of wireless communications and cognitive radio which can have significant applications in disaster Management. Initially, results will be presented for the performance of a selective Decode-and-Forward (DF) relaying based multiple-input multiple-output (MIMO) space-time block coded (STBC) cooperative communication system with single and multiple relays. Analysis is presented for the end-to-end PEP of coded block detection, diversity order and optimal power allocation. For the multi-relay scenario, two different relaying protocols are considered based on two-phase and multi-phase communication. In the context of cognitive radio, the optimal Bartlett detector based sequential probability ratio test (SPRT) for spectrum sensing is presented in multi-antenna array cognitive radio networks for single/multiple primary user scenarios over fading wireless channels. Expressions are derived for the average number of blocks required for the sequential detector in terms of the desired probability of false alarm and misdetection. Some results are also presented for unicast/ multicast multicell cooperative transmission, which is well suited for video transmission, with interference among users/user groups. In this context, the optimal minimum variance distortionless response (MVDR)-based successive minimum variance beamforming (SMVB) scheme is proposed, which achieves a superior sum-rate performance compared with the block diagonalization scheme. Subsequently, optimal joint power allocation and broadcast beamforming schemes are derived for multicell cooperative broadcast transmission with total network and per basestation power constraints.