Publications

Books/Book Chapters

[B8] N. Sharma, S. Gautam, P. K. Upadhyay, S. Chatzinotas, and B. Ottersten, "Spectrum Management for 6G RIS-SWIPT Systems," Intelligent Spectrum Management: Towards 6G, S. Iyer et al. (eds.), Wiley, 2024.

[B7] V. Bankey, P. K. Upadhyay, and D. B. da Costa, "Physical Layer Security in Hybrid Satellite-Terrestrial Relay Networks," Physical Layer Security, K. N. Le (eds.), Springer Nature Switzerland, 2021.

[B6] P. K. Upadhyay, "Improving Performance of Relay-Assisted Molecular Communication Systems using Network Coding," Modelling, Simulation and Intelligent Computing, N. Goel et al. (eds.), Springer Nature Singapore, 2020.

[B5] V. Bankey and P. K. Upadhyay, "On the Physical Layer Security for Land Mobile Satellite Systems," Modelling, Simulation and Intelligent Computing, N. Goel et al. (eds.), Springer Nature Singapore, 2020.

[B4] V. Singh, P. K. Upadhyay, K.-J. Lee, and D. B. da Costa, "Cooperative and Cognitive Hybrid Satellite-Terrestrial Networks," Cognitive Radio, Mobile Communications and Wireless Networks, M. H. Rehmani and R. Dhaou (eds.), EAI/Springer Innovations in Communications and Computing Book Series, 2018.

[B3] D. S. Gurjar and P. K. Upadhyay, "Spectrum Sharing for D2D Communications in Fifth-Generation Wireless Networks," Enabling Technologies and Architectures for Next-Generation Networking Capabilities, M. Elkodr (eds.), IGI Global, 2018.

[B2] P. K. Upadhyay, "Spatial Diversity for Analog Network Coding," Lambert Academic Publishing, Germany, 2012.

[B1] P. K. Upadhyay and S. Prakriya, "Bidirectional Cooperative Relaying," in Radio Communications, Alessandro Bazzi (eds.), InTech, 2010.

Journals and Conferences

2025

[J75] K. Yadav, P. K. Upadhyay, J. M. Moualeu, A. A. F. Osman, and P. H. J. Nardelli, "Deep Learning-Based Secrecy Performance of UAV-IRS NOMA Systems with Friendly Jamming," IEEE Open Journal of the Communications Society, vol. 6, pp. 4533-4548, May 2025, doi: 10.1109/OJCOMS.2025.3570923.

[J74] C. K. Singh, D. Kumar, J. Lehtomaki, Z. Khan, M. Latva-Aho, and P. K. Upadhyay, "Robust UAV-integrated Active STAR-RIS RSMA Networks: Analysis with Deep Learning Techniques," IEEE Transactions on Vehicular Technology, vol. 74, no. 5, pp. 8297-8302, May 2025.

[J73] S. Cheepurupalli, D. K. Egu, P. K. Upadhyay, A. M. Salhab, J. M. Moualeu, and P. H. J. Nardelli, "Deep Learning-Enabled Secrecy Performance Analysis of UAV-Aided Reconfigurable Intelligent Surfaces with Non-Orthogonal Multiple Access," IEEE Transactions on Cognitive Communications and Networking (early access), Feb. 2025, doi: 10.1109/TCCN.2025.3546608.

[C56] K. Yadav, P. K. Upadhyay, J. M. Moualeu, and P. H. J. Nardelli, Secure Communication in Aerial IRS-Assisted NOMA Systems with Friendly Jamming, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Istanbul, Türkiye, Sep. 1–4, 2025.

[C55] S. Cheepurupalli, D. Daftari, P. K. Upadhyay, and A. M. Salhab, "Deep Learning-Aided Analysis for UAV-Assisted NOMA Networks using FSO-RF Communications," National Conference on Communications (NCC), IIT Delhi, Delhi, India, Mar. 6-9, 2025.

2024

[J72] C. K. Singh, D. Kumar, J. Lehtomaki, Z. Khan, M. Latva-Aho, and P. K. Upadhyay, "Analysis with Deep Learning of Robust UAV-Mounted Active IRS NOMA Networks with Imperfections," IEEE Open Journal of the Communications Society, vol. 5, pp. 7878-7899, Dec. 2024, doi: 10.1109/OJCOMS.2024.3510887.

[J71] A. A. F. Osman, J. M. Moualeu, F. Takawira, K. Yadav, and P. K. Upadhyay, "On Secure Hybrid RF-FSO MIMO-NOMA Systems with Colluding and Non-Colluding Eavesdroppers," IEEE Wireless Communications Letters, vol. 13, no. 9, pp. 2472-2476, Sep. 2024.

[J70] A. K. Naik, S. K. Nanda, P. K. Upadhyay, and A. K. Singh, "Kalman‐Based Multiple Sinusoids Identification from Intermittently Missing Measurements of the Superimposed Signal," International Journal of Adaptive Control and Signal Processing, Jun. 2024, doi: 10.1002/acs.3853.

[J69] C. K. Singh, P. K. Upadhyay, J. Lehtomaki, and M. Juntti, "Performance Analysis with Deep Learning Assay for Cooperative UAV-Borne IRS NOMA Networks under Non-Ideal System Imperfections," IEEE Transactions on Vehicular Technology, vol. 73, no. 1, pp. 1065-1083, Jan. 2024.

[J68] D. Scazzoli, S. Moro, V. Teeda, P. K. Upadhyay, and M. Magarini, "Experimental Comparison of UAV-Based RSSI and AoA Localization," IEEE Sensors Letters, vol. 8, no. 1, pp. 1-4, Jan. 2024.

[C54] S. A. Siddique, S. Kumar, P. K. Upadhyay, F. Vakilipoor, and D. Scazzoli, "Spectral Features-based Machine Learning Approach to Detect SARS-COV-2 Infection Using Sound," EAI BODYNETS, Milan, Italy, Feb. 2024.

[C53] N. S. Mouni, P. Reddy M., A. Kumar, P. K. Upadhyay, and M. Magarini, "Adaptive Multi-User Clustering and Power Allocation for Hybrid OMA-NOMA System with Imperfect SIC," COMSNETS 2023 Poster Track, Bengaluru, India, Jan. 3-7, 2024.

2023

[J67] R. Kumar, C. K. Singh, P. K. Upadhyay, A. M. Salhab, A. A. Nasir, and M. Masood, "IoT-Inspired Cooperative Spectrum Sharing with Energy Harvesting in UAV-Assisted NOMA Networks: Deep Learning Assessment," IEEE Internet of Things Journal, vol. 10, no. 24, pp. 22182-22196, Dec. 15, 2023.

[J66] A. K. Shukla, J. M. Moualeu, P. K. Upadhyay, F. Takawira, and P. H. J. Nardelli, "On the Performance of Cache- and Energy Harvesting-Assisted NOMA in D2D Communications with Hardware Impairments," IEEE Sensors Letters, vol. 7, no. 11, pp. 1-4, Nov. 2023.

[J65] A. K. Naik, P. K. Upadhyay, M. Magarini, and A. K. Singh, "Nonlinear Filtering with Sporadically Missing Sensor Data," IEEE Sensors Letters, vol. 7, no. 10, pp. 1-4, Oct. 2023.

[J64] C. K. Singh, P. K. Upadhyay, and J. Lehtomaki, "Performance Analysis and Deep Learning Assessment of Full-Duplex Overlay Cognitive Radio NOMA Networks under Non-Ideal System Imperfections," IEEE Transactions on Cognitive Communication and Networking, vol. 9, no. 3, pp. 664-682, Jun. 2023.

[J63] A. K. Shukla, K. Yadav, P. K. Upadhyay, and J. M. Moualeu, "Exploiting Deep Learning in the Performance Evaluation of EH-Based Coordinated Direct and Relay Transmission System with Cognitive NOMA," IEEE Communications Letters, vol. 27, no. 6, pp. 1501-1505, Jun. 2023.

[J62] A. K. Naik, P. K. Upadhyay, and A. K. Singh, "Gaussian Kernel Quadrature Kalman Filter," European Journal of Control, Vol. 71, May 2023, 100805.

[C52] D. Tagliaferri, M. Mizmizi, F. Vakilipoor, M. Magarini, P. K. Upadhyay, and S. Bregni, "Distance Estimation Based on Impulse Response Distortion in Diffusive Molecular Communication," IEEE Latin-American Conference on Communications (LATINCOM), Panama City, Panama, 15-17 Nov. 2023.

[C51] K. Yadav, P. K. Upadhyay, and M. Magarini, "Physical Layer Security Analysis of IRS-Aided UAV Relaying Systems with NOMA," IEEE International Mediterranean Conference on Communications and Networking (MeditCom), Dubrovnik, Croatia, pp. 157-163, Oct. 2023.

[C50] A. K. Shukla, J. M. Moualeu, M. Magarini, and P. K. Upadhyay, "Performance Analysis of Cache- and SWIPT-Aided NOMA-Based CDRT Networks," International Telecommunications Conference (ITC), Alexandria, Egypt, Jul. 18-20, 2023.

[C49] M. Nemalidinne, P. Reddy M, A. Kumar, and P. K. Upadhyay, "Enhanced User Pairing and Power Allocation Strategies for Downlink NOMA Systems with Imperfections in SIC," COMSNETS 2023 Poster Track, Bengaluru, India, Jan. 3-8, 2023. (Best Poster Award)

2022

[J61] A. K. Shukla, J. Sharanya, K. Yadav, and P. K. Upadhyay, "Exploiting SWIPT-Enabled IoT-Based Cognitive Nonorthogonal Multiple Access with Coordinated Direct and Relay Transmission," IEEE Sensors Journal, vol. 22, no. 19, pp. 18988-18999, Oct. 2022.

[J60] L. Chouhan, P. K. Upadhyay, P. K. Sharma, and A. M. Salhab, "On Anomalous Diffusion of Devices in Molecular Communication Systems," IEEE Transactions on Molecular, Biological and Multi-Scale Communications, vol. 8, no. 3, pp. 207-211, Sep. 2022.

[J59] H. Kong, M. Lin, J. Zhang, J. Ouyang, J-B. Wang, and P. K. Upadhyay, "Ergodic Sum Rate for Uplink NOMA Transmission in Satellite-Aerial-Ground Integrated Network," Chinese Journal of Aeronautics, vol. 35, no. 9, pp. 58-70, Sep. 2022.

[J58] A. K. Naik, G. Kumar, P. K. Upadhyay, P. Date, and A. K. Singh, "Gaussian Filtering for Simultaneously Occurring Delayed and Missing Measurements," IEEE Access, vol. 10, pp. 100746-100762, Sep. 2022.

[J57] S. Jain, P. Jain, P. K. Upadhyay, J. M. Moualeu, and A. Srivastava, "An Energy Efficient Health Monitoring Approach with Wireless Body Area Networks," ACM Transactions on Computing for Healthcare, vol. 3, no. 3, article no. 29, pp. 1-22, Jul. 2022.

[J56] C. K. Singh, V. Singh, P. K. Upadhyay, and M. Lin, "Energy Harvesting in Overlay Cognitive NOMA Systems with Hardware Impairments," IEEE Systems Journal, vol. 16, no. 2, pp. 2648-2659, Jun. 2022.

[J55] C. K. Singh and P. K. Upadhyay, "Overlay Cognitive IoT-Based Full-Duplex Relaying NOMA Systems with Hardware Imperfections," IEEE Internet of Things Journal, vol. 9, no. 9, pp. 6578-6596, May 2022.

[J54] L. Chouhan and P. K. Upadhyay, "Effect of Time-Dependent Drift and Diffusion in Molecular Communication Systems," IEEE Communications Letters, vol. 26, no. 4, pp. 778-782, Apr. 2022.

[J53] V. Singh and P. K. Upadhyay, "Exploiting FD/HD Cooperative-NOMA in Underlay Cognitive Hybrid Satellite-Terrestrial Networks," IEEE Transactions on Cognitive Communications and Networking, vol. 8, no. 1, pp. 246-262, Mar. 2022.

[J52] V. Singh and P. K. Upadhyay, "Exploiting Cache-Free/Cache-Aided TWR-NOMA in Cognitive Hybrid Satellite-Terrestrial Networks," IEEE Transactions on Vehicular Technology, vol. 71, no. 2, pp. 1778-1793, Feb. 2022.

[C48] N. S. Mouni, P. Reddy M., A. Kumar, and P. K. Upadhyay, "Alpha-Fairness based User Pairing for Downlink NOMA Systems with Imperfect SIC," IEEE Global Communications Conference (GLOBECOM), Rio de Janeiro, Brazil, Dec. 4-8, 2022.

[C47] K. Mutha, P. K. Upadhyay, and J. M. Moualeu, "Caching in SWIPT-Enabled Bidirectional Cooperative Hybrid Relaying Networks," IEEE 8th World Forum on Internet of Things (WF-IOT 2022), Yokohama, Japan, Oct. 26-Nov. 11, 2022.

[C46] N. S. Mouni, P. Reddy M., A. Kumar, and P. K. Upadhyay, "DNN based Adaptive User Pairing and Power Allocation to Achieve Alpha-Fairness in NOMA Systems with Imperfections in SIC," International Conference on AI-ML Systems, Bangalore, India, Oct. 12-15, 2022.

[C45] K. Yadav, P. K. Upadhyay, J. Lehtomaki, and J. M. Moualeu, "Physical Layer Security of Overlay Cognitive NOMA Systems with Control-Jamming," IEEE Vehicular Technology Conference (VTC2022-Fall), London/Beijing, Sep. 26-29, 2022, pp. 1-7.

[C44] C. K. Singh, P. K. Upadhyay, J. Lehtomaki, and M. Juntti, "Outage Performance with Deep Learning Analysis for UAV-Borne IRS Relaying NOMA Systems with Hardware Impairments," IEEE Vehicular Technology Conference (VTC2022-Fall), London/Beijing, Sep. 26-29, 2022, pp. 1-7.

[C43] N. S. Mouni, P. Reddy M., A. Kumar, and P. K. Upadhyay, "Adaptive Multi-User Clustering and Power Allocation for NOMA Systems with Imperfect SIC," N2Women Workshop, ACM SIGCOMM Posters, Amsterdam, Aug. 22-26, 2022.

2021

[J51] N. S. Mouni , A. Kumar, and P. K. Upadhyay, "Adaptive User Pairing for NOMA System with Imperfect SIC," IEEE Wireless Communications Letters, vol. 10, no. 7, pp. 1547-1551 , Jul. 2021.

[J50] A. K. Shukla, V. Singh, P. K. Upadhyay, A. Kumar, and J. M. Moualeu, "Performance Analysis of Energy Harvesting-Assisted Overlay Cognitive NOMA Systems with Incremental Relaying," IEEE Open Journal of the Communications Society, vol. 2, pp. 1558-1576, Jun. 2021.

[J49] A. K. Shukla, P. K. Upadhyay, A. Srivastava, and J. M. Moualeu, "Enabling Co-Existence of Cognitive Sensor Nodes with Energy Harvesting in Body Area Networks," IEEE Sensors Journal, vol. 21, no. 9, pp. 11213-11223, May 2021.

[J48] V. Singh, S. Solanki, P. K. Upadhyay, D. B. da Costa, and J. M. Moualeu, "Performance Analysis of Hardware-Impaired Overlay Cognitive Satellite-Terrestrial Networks with Adaptive Relaying Protocol," IEEE Systems Journal, vol. 15, no. 1, pp. 192-203, Mar. 2021.

[C42] N. S. Mouni, A. Kumar, and P. K. Upadhyay, "Minimum SINR Difference based User Paring for NOMA Systems with Imperfect SIC," N2Women Workshop, ACM SIGCOMM Posters, Aug. 23-27, 2021.

[C41] A. K. Shukla, P. K. Upadhyay, A. Srivastava, and J. M. Moualeu, "Energy Harvesting-Assisted Cognitive Sensor Nodes in Wireless Body Area Networks," IEEE 7th World Forum on Internet of Things (WF-IoT 2021), New Orleans, Louisiana, USA, 14 Jun.-31 Jul. 2021.

2020

[J47] L. Chouhan, P. K. Sharma, P. K. Upadhyay, P. Garg, and N. Varshney, "Impacts of Unintended Nanomachine in Diffusion-based Molecular Communication System," IEEE Transactions on Molecular, Biological, and Multi-Scale Communications, vol. 6, no. 3, pp. 210-219, Dec. 2020.

[J46] S. Solanki, P. K. Upadhyay, D. B. da Costa, H. Ding, and J. M. Moualeau, "Performance Analysis of Piece-Wise Linear Model of Energy Harvesting-Based Multiuser Overlay Spectrum Sharing Networks," IEEE Open Journal of the Communications Society, vol. 1, pp. 1820-1836, Nov. 2020.

[J45] X. Liu, M. Lin, W. -P. Zhu, J. -Y. Wang, and P. K. Upadhyay, "Outage Performance for Mixed FSO-RF Transmission in Satellite-Aerial-Terrestrial Networks," IEEE Photonics Technology Letters, vol. 32, no. 21, pp. 1349-1352, Nov. 2020.

[J44] P. K. Upadhyay, "Development of Spectral- and Energy-Efficient Wireless Communication Techniques," CSI Transactions on ICT, vol. 8, no. 2, pp. 165-169, Jun. 2020.

[J43] V. Singh, P. K. Upadhyay, and M. Lin, " On the Performance of NOMA-Assisted Overlay Multiuser Cognitive Satellite-Terrestrial Networks," IEEE Wireless Communications Letters, vol. 9, no. 5, pp. 638-642, May 2020.

[J42] G. Cheng, Q. Huang, R. Xing, M. Lin, and P. K. Upadhyay, "On the Secrecy Performance of Integrated Satellite-Aerial-Terrestrial Networks", International Journal of Satellite Communications and Networking, vol. 38, no. 3, pp. 314-327, May 2020.

[C40] V. Singh, V. Bankey, and P. K. Upadhyay, "Underlay Cognitive Hybrid Satellite-Terrestrial Networks with Cooperative-NOMA," IEEE Wireless Communications and Networking Conference (WCNC), Seoul, South Korea, 25-28 May 2020.

[C39] V. Bankey, V. Singh, and P. K. Upadhyay, “Physical Layer Secrecy of NOMA-Based Hybrid Satellite-Terrestrial Relay Networks,” IEEE Wireless Communications and Networking Conference (WCNC), Seoul, South Korea, 25-28 May 2020.

[C38] V. Bankey and P. K. Upadhyay, “On the Physical Layer Security for Land Mobile Satellite Systems,” International Conference on Modelling, Simulation & Intelligent Computing (MoSICom 2020), Dubai, UAE, 29-31 Jan. 2020.

[C37] P. K. Upadhyay, "Improving Performance of Relay-Assisted Molecular Communication Systems using Network Coding," International Conference on Modelling, Simulation & Intelligent Computing (MoSICom 2020), Dubai, UAE, 29-31 Jan. 2020.

[C36] V. Bankey and P. K. Upadhyay, "Improving Secrecy Performance of Land Mobile Satellite Systems via a UAV Friendly Jammer," IEEE Consumer Communications & Networking Conference (CCNC): Workshop on Unmanned Aerial Vehicle (UAV 20) Communications & Networks, Las Vegas, USA, 10-13 Jan. 2020.

[C35] V. Singh, S. Solanki, P. K. Upadhyay, D. B. da Costa, and J. M. Moualeu, "Impact of Hardware Impairments on Cognitive Satellite-Terrestrial Relaying with a Direct Link," IEEE Consumer Communications & Networking Conference (CCNC), Las Vegas, USA, 10-13 Jan. 2020.

2019

[J41] S. Solanki, V. Singh, and P. K. Upadhyay, "RF Energy Harvesting in Hybrid Two-Way Relaying Systems with Hardware Impairments," IEEE Transactions on Vehicular Technology, vol. 68, no. 12, pp. 11792-11805, Dec. 2019.

[J40] X. Wu, M. Lin, H. Kong, Q. Huang, J. Y. Wang, P. K. Upadhyay, “Outage Performance for Multiuser Threshold-based DF Satellite Relaying,” IEEE Access, vol. 7, no. 1, pp 103142-103152, Dec. 2019.

[J39] V. Bankey and P. K. Upadhyay, “Physical Layer Security of Hybrid Satellite-Terrestrial Relay Networks with Multiple Colluding Eavesdroppers over Non-identically Distributed Nakagami-m Fading Channels,” IET Communications, vol. 13, no. 14, pp. 2115-2123, Aug. 2019.

[J38] D. B. da Costa, G. K. Karagiannidis, O. A. Dobre, P. K. Upadhyay, M. Xia, H. Ding, and R. Schober, “Introduction to the Special Section on Energy-Harvesting Cognitive Radio Networks,” IEEE Transactions on Cognitive Communications and Networking, vol. 5, no. 2, pp. 342-346, Jun. 2019.

[J37] P. S. Bithas, A. G. Kanatas, D. B. da Costa, P. K. Upadhyay, and A. Hatziefremidis, "Novel Results for the Multivariate Ricean Distribution with Non-identical Parameters," IEEE Transactions on Vehicular Technology, vol. 68, no. 5, pp. 5129-5133, May 2019.

[J36] V. Bankey and P. K. Upadhyay, "Physical Layer Security of Multiuser Multirelay Hybrid Satellite-Terrestrial Relay Networks," IEEE Transactions on Vehicular Technology, vol. 68, no. 3, pp. 2488-2501, Mar. 2019.

[C34] V. Bankey and P. K. Upadhyay, “Average Symbol Error Probability of Interference-Limited Multiuser Hybrid Satellite-Terrestrial Relay Networks with Outdated Channel State Information,” IEEE Region 10 International Conference (TENCON), Kochi, Kerala, India, Oct. 2019.

[C33] S. Solanki, P. K. Upadhyay, D. B. da Costa, H. Ding, and J. M. Moualeu, "Non-linear Energy Harvesting Based Cooperative Spectrum Sharing Networks," Int. Symp. on Wireless Commun. Syst. (ISWCS), Oulu, Finland, Aug. 2019. (Invited Paper)

[C32] V. Bankey and P. K. Upadhyay, "Ergodic Secrecy Capacity Analysis of Multiuser Hybrid Satellite-Terrestrial Relay Networks with Multiple Eavesdropper," IEEE International Conference on Communications Workshops (ICC Workshops): Wireless Physical Layer Security, May 2019.

[C31] S. K. Tiwari and P. K. Upadhyay, "Estimation and Optimization of Design Parameters in Diffusive Molecular Nanonetworks," Graduate Student Day Workshop, National Conference on Communications (NCC), IISc Bangalore, India, Feb. 2019.

2018

[J35] S. Solanki, P. K. Sharma, and P. K. Upadhyay, "Adaptive Link Utilization in Two-Way Spectrum Sharing Relay Systems Under Average Interference-Constraints," IEEE Systems Journal, vol. 12, no. 4, pp. 3461-3472, Dec. 2018.

[J34] D. S. Gurjar and P. K. Upadhyay, "Overlay Device-to-Device Communications in Asymmetric Two-Way Cellular Systems with Hybrid Relaying," IEEE Systems Journal, vol. 12, no. 4, pp. 3713-3724, Dec. 2018.

[J33] S. K. Tiwari, T. R. T. Reddy, P. K. Upadhyay, and D. B. da Costa,"Joint Optimization of Molecular Resource Allocation and Relay Positioning in Diffusive Nanonetworks," IEEE Access (Special Section on Molecular Communication Networks), vol. 6, pp. 67681-67687, Dec. 2018.

[J32] V. Singh, S. Solanki, and P. K. Upadhyay, "Cognitive Relaying Cooperation in Satellite-Terrestrial Systems With Multiuser Diversity," IEEE Access, vol. 6, pp. 65539-65547, Dec. 2018.

[J31] S. Solanki, P. K. Upadhyay, D. B. da Costa, P. S. Bithas, A. G. Kanatas, and U. S. Dias, "Joint Impact of RF Hardware Impairments and Channel Estimation Errors in Spectrum Sharing Multiple-Relay Networks," IEEE Transactions on Communications, vol. 66, no. 9, pp. 3809-3824, Sep. 2018.

[J30] S. Solanki, P. K. Upadhyay, D. B. da Costa, P. S. Bithas, and A. G. Kanatas, "Performance Analysis of Cognitive Relay Networks with RF Hardware Impairments and CEEs in the Presence of Primary Users' Interference," IEEE Transactions on Cognitive Communications and Networking, vol. 4, no. 2, pp. 406-421, Jun. 2018.

[J29] V. Bankey and P. K. Upadhyay, "Physical Layer Secrecy Performance Analysis of Multi-User Hybrid Satellite-Terrestrial Relay Networks," CSI Transactions on ICT, vol. 6, no. 2, pp. 187-193, Jun. 2018.

[J28] V. Bankey and P. K. Upadhyay, "Ergodic Capacity of Multiuser Hybrid Satellite-Terrestrial Fixed Gain AF Relay Networks with CCI and Outdated CSI," IEEE Transactions on Vehicular Technology, vol. 67, no. 5, pp. 4666-4671, May 2018.

[J27] V. Bankey, P. K. Upadhyay, D. B. da Costa, P. S. Bithas, A. G. Kanatas, and U. S. Dias, "Performance Analysis of Multi-Antenna Multiuser Hybrid Satellite-Terrestrial Relay Systems for Mobile Services Delivery," IEEE Access, vol. 6, pp. 24729-24745, Apr. 2018.

[J26] P. S. Bithas, A. G. Kanatas, D. B. da Costa, P. K. Upadhyay, and U. S. Dias, “On the Double-Generalized Gamma Statistics and Their Application to the Performance Analysis of V2V Communications,” IEEE Transactions on Communications, vol. 66, no. 1, pp. 448-460, Jan. 2018.

[C30] V. Singh and P. K. Upadhyay "Cognitive Hybrid Satellite-Terrestrial Relay Networks with Simultaneous Energy and Information Transmission," IEEE International Conference on Advanced Networks and Telecommunication Systems (ANTS), Indore, India, 16-19 Dec. 2018.

[C29] V. Singh, P. K. Upadhyay, D. B. da Costa, and U. S. Dias "Hybrid Satellite-Terrestrial Spectrum Sharing Systems with RF Energy Harvesting," IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communication (PIMRC), Bologna, Italy, 9-12 Sep. 2018.

[C28] S. K. Tiwari and P. K. Upadhyay, "Estimate-and-Forward Relaying in Molecular Communication Using Brownian Motion with Drift," International Conference on Signal Processing and Communication (SPCOM), IISc Bangalore, India, 16-19 Jul. 2018.

[C27] P. S. Bithas, A. G. Kanatas, D. B. da Costa, and P. K. Upadhyay, "A Low Complexity Communication Technique for Mobile-to-Mobile Communication Systems," 14th International Wireless Communications and Mobile Computing Conference (IWCMC), Limassol, Cyprus, 25-29 Jun. 2018.

[C26] U. Singh, S. Solanki, D. S. Gurjar, P. K. Upadhyay, and D. B. da Costa, "Wireless Power Transfer in Two-Way AF Relaying with Maximal-Ratio Combining under Nakagami-m Fading," 14th International Wireless Communications and Mobile Computing Conference (IWCMC), Limassol, Cyprus, 25-29 Jun. 2018.

[C25] D. S. Gurjar, U. Singh, and P. K. Upadhyay, "Energy Harvesting in Hybrid Two-Way Relaying with Direct Link under Nakagami-m fading," IEEE Wireless Communications and Networking Conference (WCNC), Barcelona, Spain, 15-18 Apr. 2018.

[C24] V. Bankey, P. K. Upadhyay, and D. B. da Costa, "Physical Layer Security of Interference-Limited Land Mobile Satellite Communication Systems," International Conference on Advanced Communication Technologies and Networking (CommNet), Marrakech, Morocco, 2-4 Apr. 2018. (Best Paper Award)

2017

[J25] S. K. Tiwari, T. R. T. Reddy, and P. K. Upadhyay, “Error Performance Optimization using Logarithmic Barrier Function in Molecular Nanonetworks,” IEEE Communications Letters, vol. 21, no. 11, pp. 2408-2411, Nov. 2017.

[J24] Y. R. Ortega, P. K. Upadhyay, D. B. da Costa, P. S. Bithas, A. G. Kanatas, U. S. Dias, and R. T. de Sousa Junior, “Joint Effect of Jamming and Noise on the Secrecy Outage Performance of Wiretap Channels with Feedback Delay and Multiple Antennas,” Transactions on Emerging Telecommunications Technologies, vol. 28, no. 11, 10.1002/ett.3191, Nov. 2017.

[J23] P. K. Sharma, P. K. Upadhyay, D. B. da Costa, P. S. Bithas, and A. G. Kanatas, "Performance Analysis of Overlay Spectrum Sharing in Hybrid Satellite-Terrestrial Systems with Secondary Network Selection," IEEE Transactions on Wireless Communications, vol. 16, no. 10, pp. 6586-6601, Oct. 2017.

[J22] D. S. Gurjar, P. K. Upadhyay, D. B. da Costa, and R. T. de Sousa Jr., "Beamforming in Traffic-Aware Two-Way Relay Systems with Channel Estimation Error and Feedback Delay," IEEE Transactions on Vehicular Technology, vol. 66, no.10, pp. 8807-8820, Oct. 2017.

[J21] D. S. Gurjar and P. K. Upadhyay, "Overlay Spectrum Sharing for Device-to-Device Communications in Two-Way Cellular Networks with Nodes-Mobility," Transactions on Emerging Telecommunications Technologies, vol. 28, no. 10, 10.1002/ett.3164, Oct. 2017.

[J20] S. K. Tiwari and P. K. Upadhyay, "Estimate-and-Forward Relaying in Diffusion-Based Molecular Communication Networks: Performance Evaluation and Threshold Optimization," IEEE Transactions on Molecular, Biological, and Multiscale Communications, vol. 3, no. 3, pp. 183-193, Sep. 2017. (Most popular document with the best ranking of 2 in the month of April 2018)

[J19] A. K. Meshram, D. S. Gurjar, and P. K. Upadhyay, "Joint Impact of Nodes-Mobility and Channel Estimation Error on the Performance of Two-Way Relay Systems," Elsevier Physical Communications, vol. 27, pp. 103-113, Jun. 2017.

[J18] S. Solanki and P. K. Upadhyay, “Performance Analysis of Cognitive Relay Sharing Systems with Bidirectional Primary Transmissions Under Nakagami-m Fading,” IET Communications, vol. 11, no. 8, pp. 1199-1206, Jun. 2017.

[J17] P. K. Sharma and P. K. Upadhyay, “Performance Analysis of Cooperative Spectrum Sharing with Multiuser Two-Way Relaying over Fading Channels,” IEEE Transactions on Vehicular Technology, vol. 66, no. 2, pp. 1324-1333, Feb. 2017.

[C23] S. Solanki, P. K. Sharma, P. K. Upadhyay, D. B. da Costa, P. S. Bithas, and A. G. Kanatas, "Cognitive Multi-Relay Networks with RF Hardware Impairments and Channel Estimation Errors," IEEE Global Communication Conference (GLOBECOM), Singapore, Dec. 2017.

[C22] P. S. Bithas, A. G. Kanatas, D. B. da Costa, P. K. Upadhyay, and U. S. Dias, "The Double-Generalized Gamma Distribution and its Application to V2V Communications," IEEE Global Communication Conference (GLOBECOM), Singapore, Dec. 2017.

[C21] Y. R. Ortega, P. K. Upadhyay, D. B. da Costa, P. S. Bithas, A. G. Kanatas, U. S. Dias, and R. T. de Sousa Junior, "Joint Effect of Jamming and Noise in Wiretap Channels with Multiple Antennas," 13th International Wireless Communications and Mobile Computing Conference (IWCMC), Valencia (Spain), 26-30 Jun. 2017.

[C20] S. Solanki and P. K. Upadhyay, “Secure Underlay Cognitive Relay Networks in Presence of Primary User’s Interference,” IEEE 85th Vehicular Technology Conference (VTC), Sydney, Australia, 4-7 Jun. 2017.

[C19] V. Bankey and P. K. Upadhyay, “Secrecy Outage Analysis of Hybrid Satellite-Terrestrial Relay Networks with Opportunistic Relaying Schemes,” IEEE 85th Vehicular Technology Conference (VTC), Sydney, Australia, 4-7 Jun. 2017.

[C18] P. K. Sharma, P. K. Upadhyay, D. B. da Costa, P. S. Bithas, and A. G. Kanatas, “Hybrid Satellite-Terrestrial Spectrum Sharing System with Opportunistic Secondary Network Selection,” IEEE International Conference on Communications (ICC), Paris, France, 21-25 May 2017.

[C17] P. S. Bithas, A. G. Kanatas, D. B. da Costa, and P. K. Upadhyay, “Transmit Antenna Selection in Vehicle-to-Vehicle Time-Varying Fading Channels,” IEEE International Conference on Communications (ICC), Paris, France, 21-25 May 2017.

2016

[J16] S. K. Tiwari and P. K. Upadhyay, “Maximum Likelihood Estimation of SNR for Diffusion-Based Molecular Communication,” IEEE Wireless Communications Letters, vol. 5, no. 3, pp. 320-323, Jun. 2016.

[J15] D. S. Gurjar and P. K. Upadhyay, "Impact of Channel Estimation Error on Zero-Forcing based MIMO Two-Way Relaying," IET Signal Processing, vol. 10, no. 3, pp. 210–217, Apr. 2016.

[J14] P. K. Sharma and P. K. Upadhyay, "Cognitive Relaying with Transceiver Hardware Impairments under Interference Constraints," IEEE Communications Letters, vol. 20, no. 4, pp. 820-823, Apr. 2016.

[J13] D. S. Gurjar and P. K. Upadhyay, "Performance Analysis of Zero-Forcing based MIMO Two-Way Relaying in Overlay Device-to-Device Communications," IET Communications, vol. 10, no. 6, pp. 699–708, Apr. 2016.

[J12] P. K. Upadhyay and P. K. Sharma, "Max-Max User-Relay Selection Scheme in Multiuser and Multirelay Hybrid Satellite-Terrestrial Relay Systems," IEEE Communications Letters, vol. 20, no. 2, pp. 1089-7798, Feb. 2016.

[J11] P. K. Sharma and P. K. Upadhyay, "Cooperative Spectrum Sharing in Two-Way Multi-User Multi-Relay Networks," IET Communications, vol. 10, no. 1, pp. 111 - 121, Feb. 2016.

[C16] D. S. Gurjar and P. K. Upadhyay, "Three-Phase Overlay D2D Communications in Traffic-Aware Two-Way Cellular Systems," IEEE Region 10 International Conference (TENCON), Marina Bay Sands, Singapore, 22-25 Nov. 2016.

[C15] P. K. Upadhyay and P. K. Sharma, “Multiuser Hybrid Satellite-Terrestrial Relay Networks with Co-Channel Interference and Feedback Latency,” European Conference on Networks and Communications (EuCNC), Athens, Greece, 27-30 June, 2016.

[C14] S. Solanki, P. K. Sharma and P. K. Upadhyay, “Cognitive Relay Sharing for Two-Way Primary Transmissions Under Nakagami-m Fading Channels,” International Conference on Signal Processing and Communications (SPCOM), IISc Bangalore, India, 13-15 June, 2016.

[C13] S. Yadav, R. Chawla, and P. K. Upadhyay, “Outage Performance and Location Optimization for Traffic-Aware Two-Way Relaying with Direct Link,” International Conference on Signal Processing and Communications (SPCOM), IISc Bangalore, India, 13-15 June, 2016.

[C12] S. Solanki, P. K. Sharma and P. K. Upadhyay, “Average Interference-Constrained Cognitive Two-Way Relaying with Efficient Link Utilization,” IEEE International Conference on Communications (ICC), Kuala Lumpur, Malaysia, 23-27 May, 2016.

[C11] P. K. Upadhyay and D. S. Gurjar, “Beamforming in Asymmetric Two-Way Relay Systems with Imperfect Channel Estimation,” IEEE Wireless Communications and Networking Conference (WCNC), Doha, Qatar, 3-6 Apr. 2016.

[C10] P. K. Sharma and P. K. Upadhyay, “Performance of Two-Way Overlay Spectrum Sharing Systems in the Presence of Co-Channel Interference,” IEEE Wireless Communications and Networking Conference (WCNC), Doha, Qatar, 3-6 Apr., 2016.

2015

[J10] S. Yadav and P. K. Upadhyay, “Impact of Outdated Channel Estimates on Opportunistic Two-Way ANC-Based Relaying with Three-Phase Transmissions,” IEEE Transactions on Vehicular Technology, vol. 64, no. 12, 2015.

[J9] P. K. Sharma, S. Solanki, and P. K. Upadhyay, "Outage Analysis of Cognitive Opportunistic Relay Networks with Direct Link in Nakagami-m Fading," IEEE Communications Letters, vol. 19, no. 5, May 2015.

[C9] R. Chawla, M. Mounika Reddy, and P.K. Upadhyay, "Outage Analysis of Cellular Two-Way Relaying with Spectrum Sharing in Nakagami-m Fading," 18th International Symposium on Wireless Personal Multimedia Communications (WPMC), Hyderabad, India, Dec. 13-16, 2015.

[C8] P. K. Sharma and P. K. Upadhyay, “Overlay Spectrum Sharing with Multiuser Two-Way Relaying using TDBC in Nakagami-m Fading,” IEEE 81st Vehicular Technology Conference (VTC), Glasgow, Scotland, May 2015.

[C7] D. S. Gurjar and P. K. Upadhyay, “Outage Performance of Zero-Forcing Based MIMO Two-Way Relaying with Channel Estimation Error,” National Conference on Communications (NCC), IIT Bombay, Feb. 2015.

2014

[J8] S. Yadav, P. K. Upadhyay, and S. Prakriya, “Performance Evaluation and Optimization for Two-Way Relaying with Multi-Antenna Sources,” IEEE Transactions on Vehicular Technology, vol. 63, no. 6, pp. 2982-2989, Jul. 2014.

[J7] S. Yadav and P. K. Upadhyay, “Finite-SNR Diversity-Multiplexing Tradeoff for Three-Phase ANC with Channel Estimation Errors,” IEEE Communications Letters, vol. 18, no. 5, pp. 817-820, May 2014.

[J6] S. Yadav and P. K. Upadhyay, “Performance Analysis of Cognitive Spectrum Sharing with Time Division Broadcast Protocol,” IEEE Communications Letters, vol. 18, no. 2, pp. 305-308, Feb. 2014.

[C6] S. Yadav and P. K. Upadhyay, “Overall Outage Analysis of Three-Phase Analog Network Coding with Channel Estimation Errors,” IEEE 79th Vehicular Technology Conference (VTC), Seoul, Korea, May 2014.

2013

[J5] P. K. Upadhyay and S. Yadav, “On the Performance of Cellular Two-Way Relay Systems with Analog Network Coding and Multiuser Diversity,” Wireless Personal Communications, vol. 72, no. 4, pp. 2705-2720, Oct. 2013.

[J4] S. Yadav and P. K. Upadhyay, “Performance of Three-Phase Analog Network Coding with Relay Selection in Nakagami-m Fading,” IEEE Communications Letters, vol. 17, no. 8, pp. 1620-1623, Aug. 2013.

[C5] P. K. Upadhyay and S. Prakriya, “Joint Power and Location Optimization for Analog Network Coding with Multi-Antenna Sources,” IEEE Wireless Communications and Networking Conference (WCNC 2013), Shanghai, China, Apr. 2013.

[C4] S. Yadav and P. K. Upadhyay, “Performance Analysis of Two-Way AF Relaying Systems Over Cascaded Generalized-K Fading Channels,” National Conference on Communications (NCC), IIT Delhi, New Delhi, Feb. 2013.

2012

[C3] P. K. Upadhyay and S. Prakriya,"Outage Performance of MIMO Two-Way AF Relaying with End-to-End Antenna Selection," IEEE Sarnoff Symposium, Newark, New Jersey, May 2012.

2011

[J3] P. K. Upadhyay and S. Prakriya, “Outage-Optimal Opportunistic Scheduling with Analog Network Coding in Multiuser Two-Way Relay Networks,” EURASIP Journal on Wireless Communications and Networking, 2011:194.

[J2] P. K. Upadhyay and S. Prakriya, “Performance of Analog Network Coding with Asymmetric Traffic Requirements,” IEEE Communications Letters, vol. 15, no. 6, pp. 647-649, Jun. 2011.

[J1] P. K. Upadhyay and S. Prakriya, “Performance of Two-Way Opportunistic Relaying with Analog Network Coding over Nakagami-m Fading,” IEEE Transactions on Vehicular Technology, vol. 60, no. 4, pp. 1965-1971, May 2011.

[C2] P. K. Upadhyay and S. Prakriya, “Performance Bounds for Analog Network Coding Based Two-Way Relaying with Multiuser Selection Diversity,” IEEE Wireless Communications and Networking Conference (WCNC 2011), Cancun, Mexico, Mar. 2011.

[C1] P. K. Upadhyay and S. Prakriya, “Outage Analysis of User Scheduling with Antenna Selection in Multiuser Two-Way AF Relaying,” ICDeCom, BIT Mesra, India, Feb. 2011.

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