| On the performance of RF-FSO system over Rayleigh and Kappa-Mu/inverse Gaussian fading environment J Gupta, VK Dwivedi, V Karwal IEEE Access 6, 4186-4198, 2018 | 28 | 2018 |
| On the physical layer security of a decode and forward based mixed FSO/RF co-operative system DR Pattanayak, VK Dwivedi, V Karwal, IS Ansari, H Lei, MS Alouini IEEE Wireless Communications Letters 9 (7), 1031-1035, 2020 | 27 | 2020 |
| Physical layer security of a two way relay based mixed FSO/RF network in the presence of multiple eavesdroppers DR Pattanayak, VK Dwivedi, V Karwal Optics communications 463, 125429, 2020 | 22 | 2020 |
| On the physical layer security of hybrid RF-FSO system in presence of multiple eavesdroppers and receiver diversity DR Pattanayak, VK Dwivedi, V Karwal Optics Communications 477, 126334, 2020 | 18 | 2020 |
| Secure transmission for energy efficient parallel mixed FSO/RF system in presence of independent eavesdroppers DR Pattanayak, VK Dwivedi, V Karwal, A Upadhya, H Lei, G Singh IEEE Photonics Journal 14 (1), 1-14, 2021 | 11 | 2021 |
| Advances in Signal Processing and Communication BS Rawat, A Trivedi, S Manhas, V Karwal Springer: Singapore, 2019 | 11 | 2019 |
| Lexicon-based sentiment analysis of Indian Union Budget 2016–17 M Shakeel, V Karwal 2016 International Conference on Signal Processing and Communication (ICSC …, 2016 | 11 | 2016 |
| A new windowing function to reduce ICI in OFDM systems PK Yadav, VK Dwivedi, V Karwal, JP Gupta International Journal of Electronics Letters 2 (1), 2-7, 2014 | 10 | 2014 |
| Independently updating the DCT and DST for shifting windowed data V Karwal, BG Sherlock, YP Kakad Journal of the Franklin Institute 350 (6), 1345-1357, 2013 | 9 | 2013 |
| Free space optical communications with distributed switch‐and‐stay combining J Gupta, VK Dwivedi, V Karwal, IS Ansari, GK Karagiannidis IET Communications 12 (6), 727-735, 2018 | 7 | 2018 |
| Discrete cosine transform-only and discrete sine transform-only windowed update algorithms for shifting data with hardware implementation V Karwal The University of North Carolina at Charlotte, 2009 | 7 | 2009 |
| Performance enhancement of 5G OFDM systems using modified raised cosine power pulse PK Yadav, VK Dwivedi, BT Maharaj, V Karwal, JP Gupta Wireless Personal Communications 106, 2375-2386, 2019 | 6 | 2019 |
| Joint overlay-underlay optimal power allocation in cognitive radio J Gupta, V Karwal, VK Dwivedi Wireless Personal Communications 83, 2267-2278, 2015 | 5 | 2015 |
| Improved algorithm for ODCT computation of a running data sequence S Akhter, V Karwal, RC Jain Journal of Electrical and Computer Engineering 2012, 2012 | 5 | 2012 |
| Windowed DST-independent discrete cosine transform for shifting data V Karwal, BG Sherlock, YP Kakad Proceeding of the 20th International Conference on Systems Engineering, 252-257, 2009 | 5 | 2009 |
| ICI and PAPR Reduction of OFDM Systems Using IPMS Pulse. PK Yadav, VK Dwivedi, V Karwal, JP Gupta International Journal of Microwave & Optical Technology 10 (4), 2015 | 3 | 2015 |
| Physical Layer Security Analysis of Multi-Hop Hybrid RF/FSO System in Presence of Multiple Eavesdroppers DR Pattanayak, VK Dwivedi, V Karwal, PK Yadav, G Singh IEEE Photonics Journal 14 (6), 1-12, 2022 | 2 | 2022 |
| Windowed r-point update algorithm for Discrete Fourier Transform A Srivastava, V Karwal 2013 International Conference on Signal Processing and Communication (ICSC …, 2013 | 2 | 2013 |
| Implementation of odd discrete cosine transform (ODCT-II) using distributed arithmetic approach S Akhter, V Karwal, RC Jain 2012 Nirma University International Conference on Engineering (NUiCONE), 1-6, 2012 | 2 | 2012 |
| Security Analysis for Mixed RF-FSO system in the presence of a RF-Eavesdropper DR Pattanayak, VK Dwivedi, V Karwal 2019 International Conference on Signal Processing and Communication (ICSC …, 2019 | 1 | 2019 |
