Improved Algorithm for ODCT Computation of a Running Data Sequence. - Shamim Akhter; Vikram Karwal; Roop C. Jain (J. Electr. Comput. Eng., 2012)

Independently updating the DCT and DST for shifting windowed data. - Vikram Karwal; Barry G. Sherlock; Yogendra P. Kakad (J. Frankl. Inst., 2013)

Joint Overlay-Underlay Optimal Power Allocation in Cognitive Radio. - Juhi Gupta; Vikram Karwal; Vivek Kumar Dwivedi (Wirel. Pers. Commun., 2015)

On the Performance of RF-FSO System Over Rayleigh and Kappa-Mu/Inverse Gaussian Fading Environment. - Juhi Gupta; Vivek Kumar Dwivedi; Vikram Karwal (IEEE Access, 2018)

Free space optical communications with distributed switch-and-stay combining. - Juhi Gupta; Vivek Kumar Dwivedi; Vikram Karwal; Imran Shafique Ansari; George K. Karagiannidis (IET Commun., 2018)

Performance Enhancement of 5G OFDM Systems Using Modified Raised Cosine Power Pulse. - Pankaj Kumar Yadav; Vivek Kumar Dwivedi; Bodhaswar T. Maharaj; Vikram Karwal; Jai P. Gupta 004 (Wirel. Pers. Commun., 2019)

On the Physical Layer Security of a Decode and Forward Based Mixed FSO/RF Co-Operative System. - Dipti R. Pattanayak; Vivek Kumar Dwivedi; Vikram Karwal; Imran Shafique Ansari; Hongjiang Lei; Mohamed-Slim Alouini (IEEE Wirel. Commun. Lett., 2020)