In recent years, wireless communication has seen tremendous growth and the industry has set aggressive targets for 5G - Gbps mobility user experience and 1000x capacity increase over 4G. Multiuser information theory has been successful to obtain fundamental limits of communication while capturing some of the aspects of real world scenarios like interference, role of feedback, interactive communication. Many
sophisticated techniques like interference alignment (IA), interference cancelation proposed for multiuser scenarios in the framework of information theory, have promised significant throughput gain, even when the systems are interference limited.
The primary interest in this direction is to develop communication and signal processing techniques to achieve the current as well as future needs.
Currents Topic of Interests
Delay-tolerant Feedback-based Transmission Techniques
Multi Way Communication
Our Contributions
K. G. Nagananda, P. Mohapatra, C. R. Murthy, and S. Kishore, Multiuser Cognitive Radio Networks: An Information-Theoretic Perspective, International Journal of Advances in Engineering Sciences and Applied Mathematics, An IIT Madras Journal from Springer, vol. 5, no. 1, pp. 43-65, Mar. 2013
P. Mohapatra and C. R. Murthy, Outer Bounds on the Sum Rate of the K-User MIMO Gaussian Interference Channel, IEEE Transactions on Communication, vol. 61, no. 1, pp. 176-186, Jan. 2013.
P. Mohapatra and C. R. Murthy, Inner Bound on the GDOF of the K-User MIMO Gaussian Symmetric Interference Channel, IEEE Transactions on Communication, vol. 61, no. 1, pp. 187-196, Jan. 2013.
P. Mohapatra, K. E. Nissar, and C. R. Murthy, Interference Alignment Algorithms for the K-User Constant MIMO Interference Channel,IEEE Transactions on Signal Processing, vol. 59, no. 11, pp. 5499 - 5508, Nov. 2011.
P. Mohapatra and C. R. Murthy, Generalized Degrees of Freedom of the K-User Symmetric MIMO Interference Channel, Proc. IEEE International Symposium on Information Theory (ISIT), St. Petersburg, Russia, Aug. 2011.