M. A. Sheikh, N. Arya, A. Rajoriya, R. Budhiraja, "IRS-Enhanced Cell-Free mMIMO OTFS Systems: Learning Based Channel Estimator and SE Analysis", in IEEE Transactions on Wireless Communications, doi: 10.1109/TWC.2025.3595411.
A. Rajoriya, J. N. Pisharody, Y. Mishra and R. Budhiraja, "Bayesian Off-Grid Near-Field Channel Estimation," in IEEE Transactions on Vehicular Technology, vol. 74, no. 8, pp. 13127-13132, Aug. 2025, doi: 10.1109/TVT.2025.3558258.
Y. Mishra, A. Rajoriya and R. Budhiraja, "Decentralized Learning Algorithm for Active User and Data Detection in mMTC CF mMIMO Systems," in IEEE Wireless Communications Letters, vol. 14, no. 6, pp. 1743-1747, June 2025, doi: 10.1109/LWC.2025.3554460.
A. Rajoriya, N. Singh, R. Budhiraja and A. K. Chaturvedi, "A Novel Prior-Based Channel Estimation and Activity Detection in Cell-Free mMTC Systems," in IEEE Transactions on Signal Processing, vol. 72, pp. 5500-5516, 2024, doi: 10.1109/TSP.2024.3484949.
M. A. Sheikh, A. Rajoriya, P. Singh and R. Budhiraja, "Bayesian Learning-Aided Channel Estimators for Superimposed-Pilot-Based OTFS Systems," in IEEE Transactions on Communications, vol. 73, no. 2, pp. 950-967, Feb. 2025, doi: 10.1109/TCOMM.2024.3446575.
J. N. Pisharody, A. Rajoriya and R. Budhiraja, "Near-Field Channel Estimation For XL-MIMO Systems Using Variational Bayesian Learning," in IEEE Transactions on Wireless Communications, vol. 23, no. 9, pp. 10740-10756, Sept. 2024.
N. Arya, A. Rajoriya, P. Singh and R. Budhiraja, "Variational Bayesian Learning Based Delay-Doppler Channel Estimator for Multi-User OTFS Systems," in IEEE Communications Letters, vol. 27, no. 12, pp. 3355-3359, Dec. 2023.
M. Nakul*, A. Rajoriya and R. Budhiraja, "Variational Learning Algorithms for Channel Estimation in RIS-Assisted mmWave Systems," in IEEE Transactions on Communications, vol. 72, no. 1, pp. 222-238, Jan. 2024.
J. N. Pisharody, A. Rajoriya, N. Gupta and R. Budhiraja, "Fast Correlated SBL Algorithm For Estimating Correlated Sparse Millimeter Wave Channels," in IEEE Communications Letters, vol. 27, no. 5, pp. 1407-1411, May 2023.
A. Rajoriya and R. Budhiraja, "Joint AMP-SBL Algorithms For Device Activity Detection And Channel Estimation in Massive MIMO mMTC Systems," in IEEE Transactions on Communications, vol. 71, no. 4, pp. 2136-2152, April 2023.
A. Rajoriya, A. Sharma and R. Budhiraja, "Covariance-Free Variational Bayesian Learning For Correlated Block Sparse Signals," in IEEE Communications Letters, vol. 27, no. 3, pp. 966-970, March 2023.
A. Rajoriya, R. Budhiraja and L. Hanzo, "Centralized and Decentralized Channel Estimation in FDD Multi-User Massive MIMO Systems," in IEEE Transactions on Vehicular Technology, vol. 71, no. 7, pp. 7325-7342, July 2022.
A. Rajoriya, S. Rukhsana and R. Budhiraja, "Centralized and Decentralized Active User Detection and Channel Estimation in mMTC," in IEEE Transactions on Communications, vol. 70, no. 3, pp. 1759-1776, March 2022.
S. Srivastava, A. Mishra, A. Rajoriya, A. K. Jagannatham and G. Ascheid, "Quasi-Static and Time-Selective Channel Estimation for Block-Sparse Millimeter Wave Hybrid MIMO Systems: Sparse Bayesian Learning (SBL) Based Approaches," in IEEE Transactions on Signal Processing, vol. 67, no. 5, pp. 1251-1266, 1 March 1, 2019.
Under Review
T. Garg, A. Rajoriya, R. Budhiraja, ‘‘Hardware Impairments Aware Bayesian Learning Channel Estimator for mmWave Wireless Systems,” submitted in IEEE Transactions on Wireless Communications.
M. A. Sheikh, N. arya, A. Rajoriya, R. Budhiraja, "Learning-Based Channel Estimator with Novel Pilot Design for CF IRS-Aided mMIMO-OTFS Systems," accepted in, IEEE GLOBECOM 2025, Taipei, Taiwan.
T. Garg, A. Rajoriya and R. Budhiraja, "Hardware Impairments Aware Bayesian Learning Channel Estimator for mmWave Wireless Systems," 2025 IEEE Wireless Communications and Networking Conference (WCNC), Milan, Italy, 2025, pp. 1-6, doi: 10.1109/WCNC61545.2025.10978184.
M. A. Sheikh, A. Rajoriya, P. Singh, R. Budhiraja, "Coupled Prior-Based Sparse Bayesian Channel Estimation for Superimposed Pilot OTFS Systems," 2023 IEEE Globecom, Kuala Lumpur, Malaysia.
J. N. Pisharody, A. Rajoriya and R. Budhiraja, "Channel Estimation For Extra-Large Massive MIMO Systems With Non-Stationary Channels," 2022 IEEE Globecom Workshops (GC Wkshps), Rio de Janeiro, Brazil, 2022, pp. 1567-1572.
A. Rajoriya, S. Rukhsana and R. Budhiraja, "Joint Active User Detection And Channel Estimation in Massive Access Systems," ICC 2022 - IEEE International Conference on Communications, Seoul, Korea, Republic of, May 2022, pp. 1781-1786.
A. Rajoriya, V. Katiyar and R. Budhiraja, "User Activity And Data Detection For MIMO Uplink C-RAN Using Bayesian Learning," 2020 28th European Signal Processing Conference (EUSIPCO), Amsterdam, Netherlands, Jan. 2021, pp. 1742-1746.
A. Rajoriya, V. Katiyar and R. Budhiraja, "SBL-Based Interference Cancellation and Data Recovery for Uplink C-RAN," 2020 International Conference on Communication Systems & NetworkS (COMSNETS), Bengaluru, India, Jan. 2020, pp. 340-345.
V. Tentu, D. N. Amudala, A. Rajoriya, E. Sharma and R. Budhiraja, "Energy Efficient Multi-Pair Massive MIMO Two-Way AF Relaying: A Deep Learning Approach," 2020 International Conference on Communication Systems & NetworkS (COMSNETS), Bengaluru, India, Jan. 2020, pp. 440-445.
A. Mishra, A. Rajoriya, A. K. Jagannatham and G. Ascheid, "Sparse Bayesian learning-based channel estimation in millimeter wave hybrid MIMO systems," 2017 IEEE 18th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Sapporo, Japan, 2017, pp. 1-5.