Faculty Publications
Permanent URI for this communityhttps://idr.nitk.ac.in/handle/123456789/18736
Publications by NITK Faculty
Browse
6 results
Search Results
Item Receiver architectures for 5g: Current status and future prospects(Springer Science and Business Media Deutschland GmbH, 2021) Kumar, A.; Sengar, B.S.; Chaudhary, S.; Pandey, S.K.; Pandey, S.K.; Hasan Raza Ansari, M.; Aaryashree, A.In this chapter, the recent progress in receiver architecture and various aspects of the available receiver architectures have been discussed. Besides, an overview of the systematic classification of architecture has been analyzed. Documentation of new possibilities and system-level trade has been closely inspected. Certainly, there is a requirement of low-power, flexible, and high-performance receiver architecture for the successful implementation of the 5G network. Different works in this regard have been considered as examples for discussing the status and prospects of architectures with respect to 5G future. Various architectures considered in this chapter can be very valuable to design 5G network in future and will expose the research community with new possibilties to explore for further improvements. © Springer Nature Singapore Pte Ltd. 2021.Item A wideband dual polarized bow-tie antenna for 5G applications(Institute of Electrical and Electronics Engineers Inc., 2019) Bellary, B.; Kandasamy, K.; Rao, P.H.A wideband dual polarized bowtie antenna for 5G applications is presented. The dual polarization is achieved by using two different bow-tie antenna elements placed in orthogonal orientation. The design consists of rectangular slots on the two arms of bow-tie antennas which enhances the port to port isolation. The unidirectional radiation pattern is obtained by placing a perfect electric conductor (PEC) ground plane at λ/4 distance. The radiating elements are designed to operate at 3.5 GHz. Measured results of the proposed dual polarized bow-tie antenna exhibit a bandwidth of 42.85% (3.1 - 4.6 GHz) and 11.4% (3.3 - 3.7 GHz) for a VSWR of < 2 and 1.5 respectively. An isolation of 28dB between the two ports and an average gain of 8.4 dB is measured for both the polarizations. © 2019 IEEE.Item Performance of X-Band CMOS LNA with Broadband Approach for 5G Wireless Networks(Springer Science and Business Media Deutschland GmbH, 2021) Pottem, S.K.; Kabade, R.D.; Nikith, T.N.; Mondal, S.; Kumar, S.This paper presents a CMOS low noise amplifier (LNA) for X-band range of communication for 5G wireless networks. The proposed LNA consists of three stages of casade–cascode CS topology. A Chebyshev filter T-network stage is employed for broadband input impedance matching while cascode–cascade stage is followed for a higher gain. The current mirror topology is used to provide bias current and active load to the LNA. The LNA is designed and simulated using 180 nm UMC Taiwan process in cadence platform. The proposed schematic simulation achieved a gain higher than 15 dB for the range of 8 GHz to 12 GHz (X-Band) and a minimum noise figure (NF) of 4.2 dB at 12 GHz. The proposed differential LNA operates under 2 V power supply and layout using metal–insulator–metal layers. The design and layout are verified using DRC and LVS rules. © 2021, Springer Nature Singapore Pte Ltd.Item A Survey on Device to Device Communications(Institute of Electrical and Electronics Engineers Inc., 2022) Raghu, T.V.; Manjappa, M.The demand for the network capacity from the first generation to the current age of technology is exponentially increasing and it leads to scarcity of resources. The increase in the number of users and applications also causes more power consumption. In the future, billions of heterogeneous connected devices will be there and everyone will expect high-quality services. All requirements are to get higher data rates, minimum network latency, greater number of connected devices and more throughput. The existing spectrum resources technologies are insufficient to meet all of these cellular customers' requirements. Device-to-Device (D2D) communication is a potential strategy for increasing device performance by enabling direct transfer between user pairs that are close to each other. The benefits of employing D2D communication include lower network latency, reduced power consumption, greater throughput, spectrum reuse, and much more coverage area. Because D2D users use the same licensed spectrum as cellular users, interference control between cellular users and D2D users is regarded as one of the most essential concerns when D2D is introduced to cellular networks. We present a detailed review of the various state-of-the-art methodologies for interference management in D2D communication supported in cellular networks. The different D2D communication mode is also investigated using various scenarios for resource sharing between cellular and D2D users. Moreover power consumption techniques are also analyzed to improve the battery life conservation. © 2022 IEEE.Item Transmissive All-Dielectric Metasurface for Beam-Splitting in the Ka-band(Institute of Electrical and Electronics Engineers Inc., 2025) Koilkonda, N.; Goud, R.M.; Paul, P.; Kandasamy, K.This paper presents a systematic design methodology and full-wave electromagnetic analysis of a high-efficiency, all-dielectric metasurface engineered for beam-splitting applications within the Ka-band spectrum. The proposed structure consists of a 15×15 transmissive array of subwavelength dielectric unit cells, meticulously optimized for operation at 30 GHz. By offering a lightweight, low-profile alternative to conventional bulky beamforming architectures, the metasurface enables efficient angular beam separation, generating two distinct far-field radiation lobes with a 30° angular divergence. The unit cell configuration incorporates a cylindrical structure positioned atop an ABS plastic substrate, achieving a transmittance exceeding 85% at the design frequency. A continuous 360° phase modulation is realized through precise tuning of the cylinder's radius, facilitating accurate phase-front manipulation. The phase synthesis process is implemented using MATLAB, while full-wave electromagnetic validations are conducted in CST Studio Suite. The demonstrated results underscore the metasurface potential for advanced beam-control applications, making it a promising candidate for next-generation satellite communications, radar systems, and 5G/mm wave networks. © 2025 IEEE.Item Enhancing the Security of SDN in 5G: A Hybrid Feature Selection Based Ensemble Machine Learning Framework for Classification of Cyber-Attacks(Springer, 2025) Singh, M.P.; Haimashreelakshmi; Singh, V.P.; Gupta, M.In recent years, the adoption of 5G has significantly increased due to its numerous benefits, including high availability, lower latency, improved reliability, and high performance. To manage packet flow, 5G relies on Software-Defined Networking (SDN) that employs software controllers and Application Programming Interfaces (APIs) to route packets and communicate with the hardware, providing advantages like high efficiency, low cost, and dependability. However, due to centralized control, SDN controllers are vulnerable to various cyber-attacks, including Distributed Denial of Service (DDoS), Denial of Service (DoS), Password Brute Forcing, Web Attacks, etc. This paper proposes a framework that comprises a hybrid feature selection method and an ensemble machine learning model. The proposed ensemble model combines the strengths of three different machine learning (ML) classifiers to create a voting classifier for classifying traffic in SDN. Additionally, the optimal value for the hyperparameters of each classifier is obtained through hyperparameter tuning. Finally, the experimental analysis of the proposed model using the InSDN dataset shows 99.96% accuracy, highlighting the proposed model’s effectiveness in addressing the limitations of the existing approaches and detecting multiple attacks in the SDN context. © The Author(s), under exclusive licence to Springer Nature Singapore Pte Ltd. 2025.