[Publications]

Journals:

[49]  U. K. Singh, M. Ahmadi, R. Mitra, K. Venkateswaran, R.R. Thipparaju, "Tracking Scheme for Monitoring Indoor Scene using Distributed mmWave MIMO Radar Sensors", Springer Journal of Signal Processing Systems (Accepted, 2025).

[J48] S. Jain, P.Kumar, R. Mitra, P. Singya, S. Sharma, V. Bhatia, "Generalized Versoria Soft-Root-Sign Based Adaptive Filter for System Identification Under Impulsive Noise", in IEEE Access (accepted), 2025.

[J47]  D. Boro, S. Jain, R. Mitra and P. Swami, "LHCAF-Based Hyperparameter-Free Sparse Channel Estimator for Hybrid MIMO Millimeter Wave Communication Under Impulsive Noise," in IEEE Signal Processing Letters, vol. 32, pp. 3515-3519, 2025.

[J46] A. Ranjan, S. Yadav, S. Jain, R. Mitra and M. Uysal, "Quaternion Recursive Maximum Correntropy and Versoria Criterion Algorithm for Channel Estimation Under Impulsive Noise," in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 72, no. 8, pp. 4209-4222, Aug. 2025.

[J45] A. Sharma, R. Mitra, O. Krejcar, K. Choi, M. Dobrovolny and V. Bhatia, "Hyperparameter-Free RFF Based Post-Distorter for OTFS VLC System," in IEEE Photonics Journal, vol. 15, no. 2, pp. 1-7, April 2023.

[J44] V.B.Shukla,R.Mitra,O.Krejcar,V.Bhatia, and K.Choi,"Performance Analysis of Sparse Channel Estimators for Millimeter Wave Hybrid MIMO Systems With Non-Ideal Hardware," in IEEE Transactions on Vehicular Technology, vol. 72, no. 9, pp. 11913-11923, Sept. 2023.

[J43] E.Sfeir, R.Mitra and G.Kaddoum,"A Random Fourier Feature Based Receiver Detection  for Enhanced BER Performance in Nonlinear PD-NOMA," in IEEE Transactions on Vehicular Technology, vol. 72, no. 2, pp. 2701-2706, Feb. 2023.

[J42] R. Mitra, S. Jain, G. Kaddoum, and K. Choi, "Recursive Hyperpramater Free Criterion Learning", IEEE Transactions on Ciruits and Systems II (Accepted), Jun. 2022.

[J41] S. Jain, R. Mitra, O. Krejcar, J. Nebhen and V. Bhatia, "Kernel Recursive Maximum Versoria Criterion based Post-Distorter for VLC using Kernel-Width Sampling," in IEEE Photonics Journal, doi: 10.1109/JPHOT.2022.3163714, Apr. 2022.

[J40] R. Mitra and G. Kaddoum, "Random Fourier Feature Based Deep Learning for Wireless Communications", IEEE Transactions on Cognitive Communications and Networking (Accepted), Mar. 2022. 

[J39] F. Miramirkhani, M. Karbalayghareh, E. Zeydan, R. Mitra, "Enabling 5G Indoor Services for Residential Environment using VLC Technology", Physical Communicaton (Accepted), Mar. 2022.

[J38] E. Sfeir, R. Mitra, G. Kaddoum, and V. Bhatia. "Comparative analytical study of SCMA detection methods for PA nonlinearity mitigation." Sensors 21, no. 24 (2021): 8408.

[J37]. R. Mitra, G. Kaddoum, D. B. da Costa, “Hyperparameter Free MEEF based Learning for Next Generation Communication Systems",IEEE Transactions on Communications, vol. 70, no. 3, pp. 1682-1696, Jan. 2022.

[J36]. B. Donmez, F. Miramirkhani, and R.Mitra,"Channel Modeling and Characterization for VLC-based Medical Body Sensor Networks:Trends and Challenges", IEEE Access <Accepted>, Nov. 2021.

[J35]. U. K. Singh, R. Mitra, V. Bhatia, and A. K. Mishra, "Kernel Minimum Error Entropy based Estimator for MIMO Radar in Non-Gaussian Clutter", IEEE Access <Accepted>, Sep. 2021.

[J34]. R. Mitra, G. Kaddoum, G. Dahman, and G. Poitau, "Hyperparameter Free MEE-FP based Localization", IEEE Signal Processing Letters, vol. 28, Sep. 2021.

[J33]. R. Mitra, G. Kaddoum, and G. Poitau, "Analytical Guarantees for Hyperparameter Free RFF based Deep Learning in the Low-Data Regime", IEEE Transactions on Circuits and Systems (II), vol. 69, no. 2, Feb. 2022.

[J32]. R.Mitra, V. Bhatia, S. Jain, K.Choi, "Performance Analysis of Random Fourier Features Based Unsupervised Multistage-Clustering for VLC", IEEE Communications Letters, vol. 25, no. 8, pp. 2659-2663, Jun. 2021.

[J31]. F. Miramirkhani, M. Karbalayghareh, and R.Mitra,"Least Minimum Symbol Error Rate based Post-Distortion for Adaptive Mobile VLC Transmission with Receiver Selection", Physcial Communication, Elsevier <Accepted>, Apr. 2021.

[J30]. R. Mitra, G. Kaddoum, G. Dahman, and G. Poitau, "Performance Analysis of Information Theoretic Learn- ing based Cooperative Localization", IEEE Communications Letters, vol. 25, no. 7, pp. 2196-2200, Jul. 2021.

[J29]. Reddy Sekhar K, F. Miramirkhani, R. Mitra, and A. C. Turlapaty, "Generic BER Analysis of VLC Channels Impaired by 3D User-Mobility and Imperfect CSI", IEEE Communications Letters, vol. 25, no. 7, pp. 2319- 2323, Jul. 2021.

[J28]. V. Bhatia, S. Jain, K. Garg, and R. Mitra, "Performance Analysis of RKHS based Detectors for Nonlinear NLOS Ultraviolet Communications",IEEE Transactions on Vehicular Technology <Accepted>, Mar. 2021.

[J27]. S. Jain, R. Mitra, and V. Bhatia, "Kernel Recursive Maximum Versoria Criterion Algorithm Using Random Fourier Features", IEEE Transactions on Circuits and Systems (II) (Accepted), Jan. 2021.

[J26]. E. Sfeir, R. Mitra, G. Kaddoum, and V. Bhatia, "Performance Analysis of Maximum-Correntropy based detection for SCMA", IEEE Communications Letters, Dec. 2020.

[J25]. R. Mitra, G. Kaddoum, and V. Bhatia, "Hyperparameter-Free Transmit-Nonlinearity Mitigation Using a Kernel-Width Sampling Technique", IEEE Transactions on Communications (Accepted), vol. 69, no.8, pp. 2613-2627, Dec. 2020.

[J24]. R.Mitra,G.Kaddoum,G.Dahman,and G.Poitau,"Error Analysis of Localization Based on Minimum-Error Entropy with Fiducial Points",IEEE Communications Letters (Accepted), Dec. 2020.

[J23]. S. Jain, R. Mitra and V. Bhatia, "Kernel MSER-DFE based Post-Distorter for VLC Using Random Fourier Features", IEEE Transactions on Vehicular Technology, vol. PP, no. 99, 2020.

[J22]. R. Mitra, S. Sharma, G. Kaddoum, and V. Bhatia, "Color-domain SCMA NOMA for Visible Light Communication", IEEE Communications Letters, vol. PP, no. 99, 2020.

[J21]. R. Mitra, F. Miramirkhani, V. Bhatia, and M. Uysal, "Low Complexity Least Minimum Symbol Error Rate based Post-Distortion for Vehicular VLC", IEEE Transactions on Vehicular Technology, vol. 69, no. 10, pp. 11800 - 11810, Oct. 2020.

[J20]. E. Sfeir, R. Mitra, G. Kaddoum, and V. Bhatia, "RFF Based Detection for SCMA in Presence of PA Nonlinearity", IEEE Communications Letters, vol. PP, no. 99, pp. 1-4, 2020.

[J19]. R.Mitra, S. Jain, and V. Bhatia, "Least Minimum Symbol Error Rate Based Post-Distortion for VLC Using Random Fourier Features", IEEE Communications Letters, vol. 24, no. 4, Apr. 2020.

[J18]. V. Bhatia, P. Swami, S. Sharma, and R. Mitra, "Non-orthogonal Multiple Access: An Enabler for Massive Connectivity". Journal of the Indian Institute of Science (2020), Springer.

[J17]. R.Sekhar K,and R.Mitra,"MBER Combining for MIMO VLC with User Mobility and Imperfect CSI", IEEE Communications Letters, vol. 24, no.2, pp. 376-380, Feb. 2020.

[J16]. S. Jain, R. Mitra, and V. Bhatia, "Hybrid Adaptive Precoder and Post-distorter for Massive-MIMO VLC ", IEEE Communications Letters, vol. 24, no. 1, pp. 150-154, Jan. 2020.

[J15]. U. K. Singh, R. Mitra, V. Bhatia, and A. K. Mishra, "Range and Velocity Estimation using Kernel Maximum Correntropy based Nonlinear Estimators in 

Non-Gaussian Clutter," IEEE Transactions on Aerospace and Electronic Systems, vol. 56, no. 3, pp. 1992-2004,Oct. 2019.

[J14]. S.Jain, R.Mitra, and V.Bhatia,"KLMS-DFE based adaptive post-distorter for visible light communication", Optics Communications,vol. 451, pp. 353-360, Nov. 2019.

[J13]. R. Mitra, F. Miramirkhani, V. Bhatia, and M. Uysal, "Mixture-kernel Based Post-distortion in RKHS for Time-varying VLC Channels",IEEE Transactions on Vehicular Technology, vol. 68, no. 2, pp. 1564-1577, Feb. 2019.

[J12]. U.K. Singh, R. Mitra, V. Bhatia, and A. K. Mishra, "Kernel LMS based Estimation Techniques for Radar Systems", IEEE Transactions on Aerospace and Electronic Systems, vol. 55, no. 5, pp. 2501 - 2515, Jan. 2019.

[J11]. R. Mitra, and V. Bhatia, "Minimum Error Entropy Criterion Based Channel Estimation for Massive-MIMO in VLC," IEEE Transactions on Vehicular Technology, vol. 68, no. 1, pp. 1014-1018, Jan. 2019.

[J10]. S.Jain, R.Mitra, and V.Bhatia,“Adaptive Precoding Based Detection Algorithm for Massive MIMO Visible Light Communication", IEEE Communications Letters, vol. 22, no. 9, pp. 1842-1845, Sept. 2018.

[J9]. R. Mitra, and V. Bhatia, “Precoded Chebyshev-NLMS based pre-distorter for nonlinear LED compensation in NOMA-VLC," IEEE Transactions on Communications, vol. 65, no. 11, pp. 4845-4856, Nov. 2017.

[J8]. R. Mitra, and V. Bhatia, “Low complexity post-distorter for visible light communications," IEEE Communication Letters, vol. 21, no.9, pp. 1977-1980, Sept. 2017.

[J7]. R.Mitra,and V.Bhatia,“Kernel-based parallel multi-user detector for massive-MIMO,"ElsevierComputers and Electrical Engineering (special issue on “Recent Trends in Signal Processing for 5G Technologies, 2017"), vol. 65, pp. 543-553, 2018.

[J6]. R. Mitra, and V. Bhatia, “Unsupervised Multi-Stage Clustering based Hammerstein post-distortion for VLC," IEEE Photonics Journal, vol. 9, no. 1, pp. 1-10, Feb. 2017.

[J5]. R.Mitra,andV.Bhatia,“Finite Dictionary Techniques for MSER Equalizationin RKHS," Signal ImageVideo Processing (SIVP), Springer, vol. 11, no. 5, pp. 849-856, Feb. 2017.

[J4]. R. Mitra, and V. Bhatia, “Adaptive Sparse Dictionary-Based Kernel Minimum Symbol Error Rate Post- Distortion for Nonlinear LEDs in Visible Light Communications," IEEE Photonics Journal, vol. 8, no. 4, pp. 1-13, Aug. 2016.

[J3]. R. Mitra, and V. Bhatia, “Chebyshev Polynomial-Based Adaptive Predistorter for Nonlinear LED Compen- sation in VLC," IEEE Photonics Technology Letters, vol. 28, no. 10, pp. 1053-1056, May 2016.

[J2]. R. Mitra, and V. Bhatia, “Improved multi-stage clustering-based blind equalisation in interference-limited CDMA environments," Electronics Letters, vol. 50, no. 14, pp. 1027-1029, Jul. 2014.

[J1]. R.Mitra, S.Singh, and A.Mishra,“Improved multi-stage clustering-based blind equalisation,"IET Communications, vol. 5, no. 9, pp 1255-1261, Jun. 2011.

Conferences: 

[C21] R. Mitra, Madhu. G.C., Manju V.N., U.K. Singh, P. Brida, V. Bhatia, "RFF based Enhanced CNN Architectures for Handwritten Alphabet/Digit Recognition Using the EMNIST Dataset", IEEE International Conference on Interdisciplinary Approaches in Technology and Management for Social Innovation (IATMSI-2026)  , (Accepted).

[C20] A. Verma, R. Mitra, S. Jain, K. Venkaateswaran, and V. Bhatia, "Hyperparameter-Free RFF based Post-Distortion for Multi-RIS Aided DCO-OTFS VLC System with LED Non-Linearity",  IEEE International Conference on Advanced Networks and Telecommunications System (ANTS), 2025 (Accepted).

[C19] U. K. Singh, R. Mitra,  A.K. Mishra, V. Bhatia, K. Venkatswaran, A. Datta, R.R. Thipparaju, "A Robust Nonlinear-Adaptive Estimator for MIMO Radar in the Presence of Clutter", IEEE International Conference on Advanced Networks and Telecommunications System (ANTS), 2025 (Accepted).

[C18] U.K. Singh, R. Mitra, A. K. Mishra, V.  Bhatia, K. Venkateswaran, R.R. Thipparaju, "Hyperparameter Free MEEF Based Adaptive Estimator for MIMO Radar", IEEE Radar Conference (RadarConf), Krakow, Poland, 2025 (Accepted for Lecture Presentation).

[C17] R. Kumar, V. B. Shukla, R. Mitra, V. Bhatia, N. Rajatheva and M. Latva-Aho, "Hyperparameter Free Information Theoretic Learning Based Channel Estimation for mmWave MIMO," 2024 27th International Symposium on Wireless Personal Multimedia Communications (WPMC), Greater Noida, India, 2024, pp. 1-5.

[C16]. V. B. Shukla, R. Mitra and V. Bhatia, "Millimeter Wave Hybrid MIMO System Channel Estimation Using Variable Step Size Zero Attracting LMS," 2022 IEEE International Conference on Signal Processing and Communications (SPCOM), Bangalore, India, 2022.

[C15]. V. B. Shukla, R. Mitra and V. Bhatia, "Adaptive Sparse Aware Algorithm based Channel Estimation for mmWave Hybrid MIMO System," 2021 IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS), Hyderabad, India, 2021.

[C14]. A. Sharma, S. Jain, R. Mitra and V. Bhatia, "Performance Analysis of OTFS Over Multipath Channels for Visible Light Communication," 2020 International Conference on Communications, Signal Processing, and their Applications (ICCSPA), Sharjah, United Arab Emirates, 2021.

[C13]. A. Sharma, S. Jain, R. Mitra and V. Bhatia, "Performance Analysis of OTFS Over Mobile Multipath Channels for Visible Light Communication," 2020 IEEE REGION 10 CONFERENCE (TENCON), Osaka, Japan, 2020, pp. 490-495.

[C12]. V. Chhangani, R. Mitra and V. Bhatia, "RFF Based Parallel Detection for Massive MIMO," 2020 European Conference on Networks and Communications (EuCNC), Dubrovnik, Croatia, 2020, pp. 291-295.

[C11]. U. K. Singh, R. Mitra, V. Bhatia and A. K. Mishra, "Vector-Valued KLMS based Multiple Target Range and Velocity Estimation using IEEE 802.11pWaveform for Autonomous Vehicle," 2019 IEEE International Con- ference on Advanced Networks and Telecommunications Systems (ANTS), GOA, India, 2019, pp. 1-6.

[C10]. S. Jain, A. Agrawal, R. Mitra, V. Bhatia and S. Prakash, "Low Complexity Kernel-MSER based Equalizer for Crosstalk Mitigation in Multicore Fiber Communication," 2019 IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS), GOA, India, 2019, pp. 1-6.

[C9]. S.Jain,R.Mitra and V.Bhatia,"Multivariate-KLMS based Post-Distorter for Nonlinear RGB-LEDs for Color-Shift Keying VLC," IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Istanbul, Turkey, 2019, pp. 1-6.

[C8]. U.K.Singh,R.Mitra,V.Bhatia and A.K.Mishra,"Low-Complexity Complex KLMS based Non-linear Estimators for OFDM Radar System," 2018 IEEE International Conference on Advanced Networks and Telecom- munications Systems (ANTS), Indore, India, 2018.

[C7]. S.Jain, R.Mitra and V.Bhatia,"Kernel Adaptive Filtering Based on Maximum Versoria Criterion,"2018IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS), Indore, India, 2018, pp. 1-6.

[C6]. K. Reddy Sekhar and R. Mitra, "Performance analysis of DCO-OFDM over precoded massive MIMO VLC channel," 2018 IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS), Indore, India, 2018, pp. 1-6.

[C5]. R. Mitra and V. Bhatia, "Precoding Technique for Ill-Conditioned Massive MIMO-VLC System," 2018 IEEE 87th Vehicular Technology Conference (VTC Spring), Porto, 2018, pp. 1-5.

[C4]. R.Mitra and V.Bhatia,"A kernel based technique for MSER equalisation for non-linear channels,"201523rd European Signal Processing Conference (EUSIPCO), Nice, 2015, pp. 1446-1450.

[C3]. R. Mitra and V. Bhatia, "Normalised Multi-Stage Clustering Equaliser For Underwater Acoustic Channels," 2015 Sensor Signal Processing for Defence (SSPD), Edinburgh, 2015, pp. 1-5.

[C2]. R. Mitra and V. Bhatia, "The Diffusion-KLMS Algorithm," 2014 International Conference on Information Technology, Bhubaneswar, 2014, pp. 256-259.

[C1]. R. Mitra, A. K. Mishra and T. Choubisa, "Maximum likelihood estimate of parameters of Nakagami-m distribution," 2012 International Conference on Communications, Devices and Intelligent Systems (CODIS), Kolkata, 2012, pp. 9-12.