Computer Networks and Communications, Information Systems, Signal Processing, Artificial Intelligence
54
Scopus Publications
482
Scholar Citations
12
Scholar h-index
16
Scholar i10-index
Scopus Publications
A 1-Bit Holey Substrate-Integrated Reconfigurable Intelligent Surface for Enhanced Signal Coverage Sunanda Mukhopadhyay, Abhishek Sarkhel, Debojyoti Chattapadhyay, Soumendu Ghosh, Satyendra Singh Yadav IEEE Antennas and Wireless Propagation Letters, 2026 This letter proposes a low-insertion-loss, 1-bit re-configurable intelligent surface (RIS) with a high relative band-width to enhance signal coverage in indoor environments. The RIS meta-atom, with an aperture of 0.22λ<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub>, accomplishes phase tailoring by embedding a varactor diode between two triangular patches printed on top of a dielectric substrate and a holey sub-strate, which serves as an intermediate layer, backed by a metal-lic patch as a reflector. The presence of the holey substrate ena-bles a maximum tunable phase shift of 231° with a relative bandwidth of 21.10% over a frequency span of 3.01-3.72 GHz. Furthermore, a characteristic mode-based approach has been employed for the realization of high relative bandwidth over a frequency range, which makes this work unique. Thereaf-ter, an array of 16×16 meta-atoms with a specific phase gradi-ent map has been placed in a realistic wireless indoor environ-ment to authenticate the signal coverage enhancement. Finally, the RIS prototype has been fabricated and measured to demon-strate a power intensity enhancement in the indoor environment.
A Multi-Metric Performance Analysis of STAR-RIS Aided MIMO-NOMA Framework for CIoT-Enabled 6G Wireless Networks Debbarni Sarkar, Satyendra Singh Yadav, Vipin Pal, Keshav Singh, Kapal Dev, Hyundong Shin IEEE Transactions on Consumer Electronics, 2026 Consumer internet of things (CIoT) devices are increasingly being integrated into various aspects of wireless communication, enhancing the scalability of networks. Along with these, in sixth-generation (6G) wireless networks, reconfigurable intelligent surface (RIS) has emerged as a prominent technology that can dynamically control the wireless environment. As a progression of this technology, recently, simultaneously transmitting and reflecting-RIS (STAR-RIS) has gained significant attention for its ability to achieve full-space coverage by simultaneously transmitting and reflecting signals. On the other hand, multiple input multiple output (MIMO) and non-orthogonal multiple access (NOMA) technologies have already proven their dominance in fifth-generation (5G) wireless communication networks by obtaining massive connectivity and high spectral efficiency. This paper proposes a mode switching-based STAR-RIS aided MIMO-NOMA framework for 6G wireless networks to cover the non-line-of-sight (NLoS) region as a footprint. The proposed framework adopts the selection combining and maximum ratio combining protocols to meet the quality of service requirements of the CIoT devices in NLoS regions. The study also derives mathematical formulations for the proposed framework by analyzing key performance metrics, including achievable data rate (ADR), outage probability, bit error rate (BER), diversity order, and throughput. To evaluate the effectiveness of the proposed system, comparative analyses are conducted against benchmark models such as STAR-RIS assisted single-input single-output (SISO) orthogonal multiple access and STAR-RIS assisted SISO-NOMA schemes. Simulation results affirm the superiority of the proposed framework for both the reflecting and transmitting regions of the STAR-RIS. In the transmitting region, under the maximum ratio combining protocol, the far CIoT device of the proposed STAR-RIS aided MIMO-NOMA framework attains an ADR at least 0.45 times higher than the conventional framework. Further, the BER of the proposed framework is 0.93 times lower than conventional framework.
Intelligent Resource Allocation for Satellite-RIS-Assisted URLLC-ISAC Systems Using Deep Learning Approach Debbarni Sarkar, Keshav Singh, Satyendra Singh Yadav, Chih-Peng Li IEEE Transactions on Cognitive Communications and Networking, 2026 In sixth-generation (6G) wireless communication, cognitive satellite-terrestrial networks play a crucial role in ensuring seamless and reliable connectivity for satellite users (SUs) and concurrently enable efficient spectrum sharing among cellular users (CUs). However, the coexistence of SUs and CUs introduces challenges such as interference management, latency constraints, privacy threats from potential eavesdroppers (Eves), and the need for accurate sensing to support dynamic spectrum access. To address these challenges, the reconfigurable intelligent surface (RIS) emerges as a promising and cost-efficient technology, and its performance can be further enhanced through integration with ultra-reliable low-latency communication (URLLC). URLLC ensures fast, reliable, and secure communication for SUs and CUs and supports both real-time and mission-critical applications. Along with these, integrated sensing and communication (ISAC) is a pivotal technology that enhances the system performance through environmental monitoring, detecting Eves activity, and strengthening both satellite and terrestrial links. Recently, deep learning (DL) techniques have gained significant attention as powerful tools in optimizing network performance, improving signal detection, enabling smarter resource allocation, and adaptive beamforming. Therefore, this paper introduces an intelligent resource allocation approach in a satellite-RIS-assisted URLLC-ISAC system. A DL model has been proposed to optimize the sensing beam, maximizing the minimum beam gain across multiple targets to enhance resource allocation. The proposed DL model jointly optimizes transmit beamforming, the reflecting units, and the sensing matrix under practical constraints. Simulation results demonstrate the model’s effectiveness in handling the complex optimization in the system under consideration. Simulation results show that the convergence and feasibility of the proposed model, and the proposed DL model outperform in optimizing the beam gain compared to the benchmark models. The performance has also been analyzed for both active and passive RIS configurations. Furthermore, to test the model’s efficacy in changing channel conditions, the performance of the proposed model has been validated across different channels. The time complexity analysis of the proposed model has also been evaluated.
A Super Light Convolutional Neural Network for Automatic Modulation Recognition in Unmanned Aerial Vehicles based 6G Wireless Network Debbarni Sarkar, Samarth Verma, Rupa Kumari, Yogita Yogita, Vipin Pal, Satyendra Singh Yadav IEEE Latin America Transactions, 2025 Automatic Modulation Recognition (AMR) is a fundamental capability for Unmanned Aerial Vehicle (UAV) communication systems in sixth-generation (6G) wireless networks. It enables UAVs to intelligently identify and track received signals, supporting reliable connectivity under dynamic environments. In practical UAV applications, AMR methods must achieve high recognition accuracy with minimal computational complexity, since UAV platforms operate under strict constraints in storage, memory, and processing power. While recent Deep Learning (DL)-based solutions have advanced AMR performance, most prioritize accuracy at the cost of significantly larger models and higher computational demands. Conversely, lightweight models often lack the accuracy required for real-time deployment, limiting their practical utility. To overcome these limitations, this paper presents a novel Super Light Convolutional Neural Network (SLCNN) for AMR. Unlike conventional models, SLCNN em-ploys a carefully optimized architecture with fewer convolutional layers, smaller filters, and pooling operations, combined with Gaussian noise and dropout for robust generalization. This design strategy reduces model size and inference time while preserving high accuracy. The proposed SLCNN was evaluated on the HisarMod 2019.1 dataset and validated across RML 2016.10a, 2016.10b, and 2018.01a datasets. Experimental comparisons with Convolutional Long Short-Term Memory Deep Neural Network (CLNN), Long Short-Term Memory, Gated Recurrent Unit, and Residual Network highlight that SLCNN achieves superior results, attaining 98.50% classification accuracy with significantly reduced computational cost. Furthermore, deployment on the NVIDIA Jetson Orin Nano demonstrates real-time suitability, confirming the models effectiveness for UAV-based 6G wireless networks.
Deep Learning Based Channel Estimation for UAVs: A Modified U-Net Approach C. GUPTA, S. S. YADAV Advances in Electrical and Computer Engineering, 2025 A stable and reliable communication link is crucial for unmanned aerial vehicle (UAV) applications. Key challenges include the UAV's high mobility (10-100 km/h) and an unstable data link. Orthogonal frequency division multiplexing (OFDM) enables higher data rate transmission with improved bandwidth efficiency, while minimizing channel effects on the received signal and enhancing bit error rate (BER) performance. This article proposes a deep learning based channel estimation (CE) for 802.11ac OFDM systems considering the mobility of the receiver. The proposed CE algorithm is a two-step process. The first step uses an especially developed deep neural network built on the U-Net model for denoising the signal received, followed by least squares (LS) estimation in the next step. The simulation results show that the proposed model has improved the BER by 50% and 40%, the data rate by 10% and 7% and outage probability by 10% and 7%, respectively, when compared to the conventional LS estimator and machine learning based LS estimator. The proposed model has also been evaluated for three different modulation schemes, i.e., QPSK, 16-QAM, and 64-QAM and the complexity analysis has been done to strengthen our studies further.
Low-RCS Wideband Absorber Based on Symmetry Frequency Selective Surfaces for Next-Generation Stealth Applications Debojyoti Chattapadhyay, Satyendra Singh Yadav, Abhishek Sarkhel Indiscon 2025 IEEE 6th India Council International Subsections Conference Proceedings, 2025 This paper presents a wide-band absorber incorporating a compact frequency-selective surface (FSS) element specifically designed for operation across the $\mathrm{C}, \mathrm{X}, \mathrm{Ku}$, and K-bands $(6.65-21.71 \mathrm{GHz})$. The proposed structure comprises a symmetric FSS with a central metallic square, extended meandered arms, and resistive patches to regulate absorption. Its symmetric configuration ensures polarization insensitivity, achieving a wide absorption bandwidth of 106.21% along with a minimum of 92% absorption efficiency. The absorber exhibits stable electromagnetic performance under oblique incidence angles up to 50° across orthogonal polarization states. The proposed absorber’s design is significantly smaller in size, $0.199 \lambda_{L} \times 0.095 \lambda_{L}$. Additionally, it effectively reduces the radar cross-section (RCS), enhancing stealth capability by mitigating backscattered signals. The combination of wideband absorption, polarization insensitivity, and the overall reduction of RCS makes this absorber an excellent challenger for stealth and radar applications.
Differently Shaped Beams Analysis of Reconfigurable Intelligent Surface for 6G FR1 Band Signal Coverage Extension in Indoor Environment Sunanda Mukhopadhyay, Abhishek Sarkhel, Satyendra Singh Yadav 2025 IEEE Microwaves Antennas and Propagation Conference Mapcon 2025, 2025 In the field of 6 G wireless propagation, reconfigurable intelligent surfaces (RISs) have currently attracted a lot of interest. However, due to the increasing number of obstacles, direct line-of-sight (LoS) propagation has been restricted. Therefore, the extension of signal coverage for the FR1 band in the indoor environment is an essential requirement. Despite the growing demand for RIS on 6G FR1 band wireless signal coverage extension, a limited number of research works have been reported. In this article, the differently shaped beam of RIS has been analyzed through the phase gradient profile developed on top of the RIS layer for the 6 G FR1 band application. Thereafter, two customized corridors with different configurations have been designed. Finally, these differently shaped beams have been located inside the indoor environment to evaluate the expansion of signal coverage.
Fuzzy Clustering based Cluster Head Selection for IoT enabled WSNs Proceedings of the 17th Indiacom 2023 10th International Conference on Computing for Sustainable Global Development Indiacom 2023, 2023
FCMOC: Fuzzy-C-Means based Optimal Clustering Approach for Load Balanced Energy Efficient Wireless Sensor Networks IB Prasad, S Gangwar, SS Yadav, K Kumar, V Pal IEEE Sensors Journal , 2026 2026
A 1-Bit Holey Substrate-Integrated Reconfigurable Intelligent Surface for Enhanced Signal Coverage S Mukhopadhyay, A Sarkhel, D Chattapadhyay, S Ghosh, SS Yadav IEEE Antennas and Wireless Propagation Letters , 2026 2026
Intelligent Resource Allocation for Satellite-RIS-Assisted URLLC-ISAC Systems Using Deep Learning Approach D Sarkar, K Singh, SS Yadav, CP Li IEEE Transactions on Cognitive Communications and Networking , 2026 2026
A Multi-Metric Performance Analysis of STAR-RIS Aided MIMO-NOMA Framework for CIoT-Enabled 6G Wireless Networks D Sarkar, SS Yadav, V Pal, K Singh, K Dev, H Shin IEEE Transactions on Consumer Electronics , 2025 2025 Citations: 1
Differently Shaped Beams Analysis of Reconfigurable Intelligent Surface for 6G FR1 Band Signal Coverage Extension in Indoor Environment S Mukhopadhyay, A Sarkhel, SS Yadav 2025 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), 1-4 , 2025 2025
A Super Light Convolutional Neural Network for Automatic Modulation Recognition in Unmanned Aerial Vehicles based 6G Wireless Network D Sarkar, S Verma, R Kumari, Y Yogita, V Pal, SS Yadav IEEE Latin America Transactions 23 (12), 1305-1317 , 2025 2025
SVD Assisted Agglomerative Clustering Based Framework for Video Summarization and Captioning A Verma, D Kumar, V Kumar, V Pal, SS Yadav 2025 International Conference on Artificial intelligence and Emerging … , 2025 2025 Citations: 1
Low-Power Smart Sensor Module for Real-Time Threat Monitoring and Warning in Unattended Vehicles for Vandalism P Maji, RK Singh, SS Yadav 2025 IEEE 6th India Council International Subsections Conference (INDISCON), 1-6 , 2025 2025
Low-RCS Wideband Absorber Based on Symmetry Frequency Selective Surfaces for Next-Generation Stealth Applications D Chattapadhyay, SS Yadav, A Sarkhel 2025 IEEE 6th India Council International Subsections Conference (INDISCON), 1-6 , 2025 2025
Polarization-Insensitive Triple-Band Milimeter- Wave Absorver for 6G Radar Communication D Chattapadhyay, S Ghosh, SS Yadav, A Sarkhel Millimeter Wave and Terahertz Devices for 5G and 6G systems: Modern Design … , 2025 2025
Passive metasurface reflector for 6G wireless signal coverage enhancement in indoor environment: Design and experimental demonstrations S Mukhopadhyay, A Sarkhel, PP Sarkar, SS Yadav Physical Communication 71, 102664 , 2025 2025 Citations: 2
A Wideband Digitally Coded Metasurface Using Staggering Tuning Mechanisms for Beam Steering Application in 6G mm-Wave Communication S Mukhopadhyay, A Sarkhel, SS Yadav Millimeter Wave and Terahertz Devices for 5G and 6G systems: Modern Design … , 2025 2025
Phase Gradient Profile and Target Deviation Error Analysis of 3-Bit Angle Insensitive Intelligent Reflecting Surface for 6G FR1 Band Application S Mukhopadhyay, A Sarkhel, SS Yadav 2025 IEEE Wireless Antenna and Microwave Symposium (WAMS), 1-5 , 2025 2025 Citations: 1
Comparative Analysis of OTFS and OFDM for UAV Assisted Wireless Network C Gupta, SS Yadav, RK Das 2025 7th International Conference on Energy, Power and Environment (ICEPE), 1-6 , 2025 2025 Citations: 1
Deep Learning Based Channel Estimation for UAVs: A Modified U-Net Approach C Gupta, SS Yadav Advances in Electrical & Computer Engineering 25 (1) , 2025 2025 Citations: 3
GANCE: Generative Adversarial Network Assisted Channel Estimation for Unmanned Aerial Vehicles Empowered 5G and Beyond Wireless Networks C Gupta, RK Das, RK Barik, SN Qurashi, DS Roy, SS Yadav IEEE Access 13, 198-213 , 2024 2024 Citations: 8
Optimizing Power Allocation to Maximize User Fairness in IRS-Aided NOMA Networks D Sarkar, V Pal, SS Yadav, SK Patra 2024 IEEE 21st India Council International Conference (INDICON), 1-6 , 2024 2024
Performance evaluation of ML-based classifiers for IRS-aided NOMA-based 6G cognitive radio networks D Sarkar, SS Yadav, V Pal, Yogita, SK Patra Wireless Personal Communications 139 (4), 2577-2599 , 2024 2024 Citations: 1
An Efficient Ensemble Deep Learning Model-based Signal Detection in 6G Wireless Communication V Malewar, T Kant, D Sarkar, V Pal, SS Yadav IEEE Global Conference on Information Technologies and Communications (GCITC … , 2024 2024 Citations: 2
A Framework for Enhancing Accuracy in AI Generated Text Detection Using Ensemble Modelling K Aggarwal, S Singh, V Pal, SS Yadav 2024 IEEE Region 10 Symposium (TENSYMP), 1-8 , 2024 2024 Citations: 10
MOST CITED SCHOLAR PUBLICATIONS
A Comprehensive Survey on IRS Assisted NOMA based 6G Wireless Network: Design Perspectives, Challenges and Future Directions D Sarkar, Yogita, SS Yadav, V Pal, N Kumar, SK Patra IEEE Transactions on Network and Service Management 21 (2) , 2024 2024 Citations: 77
Fast block distributed CUDA implementation of the Hungarian algorithm PAC Lopes, SS Yadav, A Ilic, SK Patra Journal of Parallel and Distributed Computing 130, 50-62 , 2019 2019 Citations: 52
A Node Overhaul Scheme for Energy Efficient Clustering in Wireless Sensor Networks J Singh, SS Yadav, V Kanungo, V Pal, Yogita IEEE Sensors Letters 5 (4), 1-4 , 2021 2021 Citations: 38
Intelligent Reflecting Surface Aided NOMA-HARQ based IoT Framework for Future Wireless Networks D Sarkar, SS Yadav, Yogita, V Pal, N Kumar IEEE Transactions on Vehicular Technology 72 (5), 6268-6280 , 2023 2023 Citations: 32
HLBC: A Hierarchical Layer-Balanced Clustering Scheme for Energy Efficient Wireless Sensor Networks IB Prasad, Yogita, SS Yadav, V Pal IEEE Sensors Journal , 2021 2021 Citations: 26
GTFR: A Game Theory Based Fuzzy Routing Protocol for WSNs S Gangwar, Yogita, IB Prasad, SS Yadav, V Pal, N Kumar IEEE Sensors Journal , 2023 2023 Citations: 20
Machine Learning based Framework to Predict Finger Movement for Prosthetic Hand G Kumar, SS Yadav, Yogita, V Pal IEEE Sensors Letters , 2022 2022 Citations: 19
An Ensemble Deep Learning Model for Automatic Modulation Classification in 5G and Beyond IoT Networks C Roy, SS Yadav, V Pal, M Singh, SK Patra, GR Sinha Computational Intelligence and Neuroscience 2021 , 2021 2021 Citations: 17
HSCR: Hierarchical structured cluster routing protocol for load balanced wireless sensor networks G Saumitra, IB Prasad, Yogita, SS Yadav, V Pal, SK Patra Software: Practice and Experiences , 2022 2022 Citations: 16
TDRA: Transformer Based Deep Recurrent Architecture for Automatic Modulation Classification (AMC) Pertinent to Intelligent Reflecting Surface Assisted Internet of Things (IoT … D Sarkar, Yogita, SS Yadav, LR Cenkeramaddi, OJ Pandey IEEE Internet of Things Journal , 2024 2024 Citations: 14
Analysis of GFDM in generalized η-μ fading channel: A simple probability density function approach for beyond 5G wireless applications SK Bandari, SS Yadav, VV Mani AEU - International Journal of Electronics and Communications 154260 (https … , 2022 2022 Citations: 14
Hungarian algorithm for subcarrier assignment problem using GPU and CUDA SS Yadav, PAC Lopes, A Ilic, SK Patra International Journal of Communication Systems 32 (4), e3884 , 2018 2018 Citations: 14
IRS-aided NOMA-based communication architecture for 6G wireless networks: An enhanced error-control and reliable data transmission D Sarkar, V Pal, SS Yadav, SK Patra Physical Communication, https://doi.org/10.1016/j.phycom.2024.10 , 2024 2024 Citations: 12
PAPR Reduction in OFDM systems PK Pradhan, SS Yadav, SK Patra 2014 Annual IEEE India Conference (INDICON), 1-5 , 2014 2014 Citations: 11
A Framework for Enhancing Accuracy in AI Generated Text Detection Using Ensemble Modelling K Aggarwal, S Singh, V Pal, SS Yadav 2024 IEEE Region 10 Symposium (TENSYMP), 1-8 , 2024 2024 Citations: 10
Application of Machine Learning Framework for Next-Generation Wireless Networks: Challenges and Case Studies SS Yadav, S Hiremath, P Surisetti, V Kumar, SK Patra Handbook of Intelligent Computing and Optimization for Sustainable … , 2022 2022 Citations: 10
GANCE: Generative Adversarial Network Assisted Channel Estimation for Unmanned Aerial Vehicles Empowered 5G and Beyond Wireless Networks C Gupta, RK Das, RK Barik, SN Qurashi, DS Roy, SS Yadav IEEE Access 13, 198-213 , 2024 2024 Citations: 8
HCM: a hierarchical clustering framework with MOORA based cluster head selection approach for energy efficient wireless sensor networks IB Prasad, S Gangwar, Yogita, SS Yadav, V Pal Microsystem Technologies , 2023 2023 Citations: 8
Detecting Sinkhole Attacks in IoT-Based Wireless Sensor Networks Using Distance From Base Station K Mondal, SS Yadav, V Pal, AP Singh, Yogita, M Singh International Journal of Information System Modeling and Design 13 (6), 1-18 , 2022 2022 Citations: 8
GTTR: A Game Theory-based TOPSIS Optimized Routing Protocol for Wireless Sensor Networks S Gangwar, IB Prasad, Yogita, SS Yadav, V Pal, N Kumar IEEE Sensors Journal , 2024 2024 Citations: 7