[3] He is known for his researches on multiple-input multi-output systems[4] and is an elected fellow of all the three major Indian science academies viz.
[12][13] His higher studies were at the University of Southern California from where he completed an MS in electrical engineering in 1988 and followed it up with a PhD in 1992.
[7] Mallik's researches have been in the fields of communication theory and systems, difference equations, and linear algebra[16] and he has worked extensively on the performance analysis of multiple-input multi-output systems, especially characterization of fading channel statistics and error analysis under correlated fading conditions.
The invited or key note speeches delivered by him include the lecture on Performance Evaluation and Channel Characterization for Wireless Communication System at National Science day (2009),[25] the address on Optimal Signaling for Multi-Level Amplitude-Shift Keying with Single-Input Multiple-Output and Non-coherent Reception at CALCON (2014),[26] Alexander Graham Bell lecture of IEEE (2015),[27] and the keynote speech at IEEE Patna 5G Summit (2016).
[5] In addition, the years 2012 and 2013 brought him two elected fellowships; that of The World Academy of Sciences[33] and The Institute of Electrical and Electronics Engineers, Inc., respectively.