Qualification: 
Ph.D, M.E
k_navin@blr.amrita.edu

Dr. Navin Kumar serves as Chairperson and Associate Professor at the Department of Electronics and Communication, School of Engineering, Amrita Vishwa Vidyapeetham, Bengaluru.

Dr. Navin Kumar obtained his Ph.D. in Telecommunication Engineering from the University of Porto, Aveiro and Minho – Portugal, Europe (2007-2011) and M.Tech. in Digital System Engineering from Motilal National Institute of Technology, Allahabad, India in the year 2000. He did his bachelor's degree in Engineering from the Institution of Electronics and Telecommunication Engineers, New Delhi in 1996.

Dr. Navin has over 22 years of working experience in Government, Industry and academia in IT and Telecommunication area. He has over 10 years of overseas experience in teaching, research and development. Some of the international research projects he has worked on like VIDAS, iLITE (EU). Dr. Navin has over 50 publications in peer-reviewed international journals and IEEE conference proceedings. In addition, he has also authored a book and book chapters.

He is a reviewer of reputed journals like IEEE Transaction on wireless communications, intelligent transportation, vehicular communications and many others. He is very active in organizing workshops (local and international), conferences etc. He is the chair of the ComSoc Bangalore chapter and also associated with IEEE Photonics, ITS, VTS, Consumer Electronics and Sensor council. Dr. Navin has been awarded the Fraunhofer Challenge award in the academic year 2010-2011 for the best PhD thesis work. He also received a research grant from Govt. of Portugal towards his Ph.D. research work. Dr. Navin is the recipient of the Gowri Memorial award, India in the year 2009 for the best journal paper. He is Sr. Member of IEEE, AIENG (HK), Life member of IETE and IE (India). Dr. Navin has been giving tutorial at IEEE flagship conferences like ICC, WCNC. He regularly speaks and delivers talks as keynote, invited speakers in conferences and workshops. He has successfully guided a PhD and 6-PhD scholars are working with him, most of them in 5G Wireless Technology. His research area includes 5G (mmWave, Architecture and Massive MIMO), Intelligent Transportation Systems, Visible Light Communication, Optical Wireless Communication, IoT& Smart City and Wireless/Mobile Communications & Networks. He is also the part of IEEE 5G Initiative in standardization.

Publications

Publication Type: Conference Paper

Year of Publication Title

2020

P. D. F. Mahesh Kum Jha, Dr. Navin Kumar, and Lakshmi, Y. V. S., “NOMA MIMO Visible Light Communication with ZF-SIC and MMSE-SIC”, in 2020 2nd PhD Colloquium on Ethically Driven Innovation and Technology for Society (PhD EDITS), Bangalore, India, India, 2020.[Abstract]


Non orthogonal multiple access (NOMA) is used to maintain the throughput and fairness in communication system. It is also investigated in context of visible light communication (VLC). The bit-error-rate (BER) and channel performance like important parameters are improved by using equalizer. In this paper, NOMA multiple input multiple output (MIMO) based VLC system is analyzed using zero forcing equalizer with successive interface cancellation (ZF-SIC) and minimum mean square error (MMSE) equalizer with successive interface cancellation (MMSE-SIC) to enhance BER performance. Simulation results showed that MMSE-SIC improves BER by 3dB of signal-to-noise ratio (SNR).

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2020

L. H and Dr. Navin Kumar, “Blind Frequency Synchronization for WLAN MIMO OFDM Systems”, in 2020 2nd PhD Colloquium on Ethically Driven Innovation and Technology for Society (PhD EDITS), 2020.[Abstract]


In the current paper, we have developed a new frequency offset estimation algorithm using cyclic prefix (CP) without using the training sequence. specifically for wireless local area network (WLAN) systems typically operating at 5 GHz radio frequency (RF) band such as IEEE 802.11 class of standards like 11a, 11g, 11n, 11ac and more recent one such as 11ax which is yet to be ratified, And are built on multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM). Rayleigh fading effects are applied in addition to additive white gaussian noise (AWGN) to analyze the performance. The algorithm performance is prevailed in all the MIMO configurations proposed for (2×2), (3×3) and (4×4). Also, it is observed that the mean square error improves as the configuration increase.

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2020

R. Tengshe and Dr. Navin Kumar, “Preliminary investigation on Analog Joint Source Channel Coding and Feedback based Communication System”, in 2020 2nd PhD Colloquium on Ethically Driven Innovation and Technology for Society (PhD EDITS), Bangalore, India, India, 2020.[Abstract]


Joint source channel coding for transmission of continuous amplitudes in discrete-time is found to be suitable for the noisy channel.Similarly, analog feedback based communication system (AFCS) is found to have an optimized channel capacity by reaching theoretical value. In this work, preliminary investigation on these two systems is carried out.We compared these systems based on optimum performance theoretically attainable (OPTA). It is found that AFCS reaches the OPTA more closely in a higher signal-to-noise ratio (SNR) regime when the feedback noise variance is low i.e the quality of the feedback channel is good. Whereas the joint source channel coding technique is found to have a constant increment below the OPTA with respect to SNR.

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2020

A. Debnath and Dr. Navin Kumar, “Simple Additive Weighted Algorithm for Vertical Handover in Heterogeneous Network”, in 2020 2nd PhD Colloquium on Ethically Driven Innovation and Technology for Society (PhD EDITS), 2020.[Abstract]


5G mobile communication is not only promising very high data rate but ubiquitous connectivity and very small latency along with many other extreme performance parameters. Additionally, 5G is also expected to provide seamless connectivity to the users and ensure smooth handover across heterogeneous networks. There are various decision-making algorithms to carry out the handover process. The paper describes the simple additive weighting algorithm to select the best network for handover.

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2018

S. Raman, V. Vignesh, and Dr. Navin Kumar, “Design and Implementation of Quadrature Voltage Controlled Oscillator in 65nm CMOS”, in 7th IEEE International conference on Advances in Computing, Communications and Informatics (ICACCI), PES Institute of Technology, Bengaluru, South campus, India, 2018.

2018

R. Kumari, V. Vignesh, and Dr. Navin Kumar, “Wideband Low Noise Amplifier Design for Microwave Frequency using CMOS 65nm technology”, in 7th IEEE International conference on Advances in Computing, Communications and Informatics (ICACCI, PES Institute of Technology, Bengaluru, South campus, India, 2018.

2015

Ra Sharma and Dr. Navin Kumar, “QoS-alert Markov chain based scheduling scheme in internet of things”, in 2015 IEEE Globecom Workshops, GC Wkshps 2015 - Proceedings, 2015.[Abstract]


Guaranteeing quality of service (QoS) to transmit real time applications which are delay sensitive is of utmost importance in Internet of Things (IoT) environment. This paper presents a dynamic Markov Chain based scheduling scheme for ensuring QoS for the delay sensitive traffic in IoT. The traffic is classified into prioritized and non- prioritized traffic. By estimating previous bandwidth allocated to prioritized traffic and the amount of decrease/increase in probability of average queue length of prioritized packets in consecutive cycles, the scheduler dynamically adjusts the percentage of link bandwidth allocated to it in each cycle. This helps in providing guaranteed services to real time traffic in IoT applications and simultaneously provide better throughput for non real time traffic as well. The proposed QoS- alert scheduling mechanism is able to optimize the desired performance in IoT network. For different experiments the simulation is performed which verifies and satisfies the blocking probability requirements of prioritized traffic for IoT data. © 2015 IEEE.

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2015

A. Aa Nawandhar, Yamujala, Lb, and Dr. Navin Kumar, “Image segmentation using thresholding for cell nuclei detection of colon tissue”, in 2015 International Conference on Advances in Computing, Communications and Informatics, ICACCI 2015, 2015, pp. 1199-1203.[Abstract]


In this paper, image segmentation process using thresholding technique is discussed. We focus our study for nuclei detection of Hematoxilin Eosin (HE) stained colon tissue for the cancer detection. Detection of cancer cell at early stage is very important and several studies are being carried out. In medical imaging for the processing of microscopic tissue images and especially the detection of cell nuclei is done more and more using digital imagery techniques. However, there are many other techniques varies in complexity and quality of detection. In this paper the result of different thresholding techniques are applied on HE-stained colon tissue to detect cell nuclei in the image. In the proposed method, a binary mask is formed which is of the same size as that of original image. In this binary image, the centre of cell nuceli is represented by white colour and the background in black. This image is superimposed over the original image. The outcome of this is a segmented image to detect the cell nuclei. The process is relatively simple and results are encouraging. © 2015 IEEE.

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2015

MaSheeba Kumari, Rao, S. Ab, and Dr. Navin Kumar, “Characterization of mmWave link for outdoor communications in 5G networks”, in 2015 International Conference on Advances in Computing, Communications and Informatics, ICACCI 2015, 2015, pp. 44-49.[Abstract]


A number of issues are being addressed in prospective millimetre wave (mmWave) technology for the design of 5G cellular networks. High atmospheric attenuation in the proposed 60GHz band for 5G system put a limit in the communication range and cell size. The channel characteristics may vary for many different indoor and outdoor scenarios, resulting in differing performance. In this paper, an attempt is made to investigate and characterize the mmWave communication link in a specific scenario of urban area on road surrounded by multistorey buildings. Average received signal level in this scenario is normally the primary metric considered. A ray tracing channel model is used owing to the deterministic nature of the link. This is due to the choice of directional antennas in mmWave communication. A significant fluctuation in the received signal is observed for varied carrier frequencies at different antenna separation. © 2015 IEEE.

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2015

M. Ka Jha, Addanki, Ab, Lakshmi, Y. V. Sc, and Dr. Navin Kumar, “Channel coding performance of optical MIMO indoor visible light communication”, in 2015 International Conference on Advances in Computing, Communications and Informatics, ICACCI 2015, 2015, pp. 97-102.[Abstract]


In this paper, a visible light communication (VLC) in the indoor environment based on MIMO system is investigated and analyzed. An attempt is made to optimize the placement of light emitting diodes (LED) VLC emitter in 4 × 4 MIMO configuration at ceiling and ground floor for the receiver to obtain uniform signal-to-noise ratio (SNR) for the desired bit error rate (BER) in the given area. The system is also optimized for the necessary power transmission from LED emitters for the maximum data rate. Two channel coding techniques repetition code (RC) and spatial modulation (SM) are analyzed and their BER and data rate performance results are presented for different receiver spacing moving in the entire area. The result shows that RC gives almost constant SNR whereas SM offers better SNR ratio for more spacing between receivers. In the case of SM, only one transmitter will transmit at a time. So the SNR value will be very low at other corner of the room. © 2015 IEEE.

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2015

R. Sharma, Dr. Navin Kumar, Gowda, N. B., and Srinivas, T., “Probabilistic prediction based scheduling for delay sensitive traffic in internet of things”, in Procedia Computer Science, 2015, vol. 52, pp. 90-97.[Abstract]


This paper proposes a probabilistic prediction based approach for providing Quality of Service (QoS) to delay sensitive traffic for Internet of Things (IoT). A joint packet scheduling and dynamic bandwidth allocation scheme is proposed to provide service differentiation and preferential treatment to delay sensitive traffic. The scheduler focuses on reducing the waiting time of high priority delay sensitive services in the queue and simultaneously keeping the waiting time of other services within tolerable limits. The scheme uses the difference in probability of average queue length of high priority packets at previous cycle and current cycle to determine the probability of average weight required in the current cycle. This offers optimized bandwidth allocation to all the services by avoiding distribution of excess resources for high priority services and yet guaranteeing the services for it. The performance of the algorithm is investigated using MPEG-4 traffic traces under different system loading. The results show the improved performance with respect to waiting time for scheduling high priority packets and simultaneously keeping tolerable limits for waiting time and packet loss for other services. © 2015 The Authors. Published by Elsevier B.V.

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2014

Ma Anand and Dr. Navin Kumar, “New, effective and efficient dimming and modulation technique for visible light communication”, in IEEE Vehicular Technology Conference, 2014, vol. 2015-January.[Abstract]


Dimming control function in light emitting diodes (LED) based visible light communication (VLC) is not only important but challenging too. Many interesting techniques are being investigated for different application scenarios. In this paper, an attempt is made to design a new and effective dimming control mechanism which is adaptive as per environmental condition to address successful data communication in case of infrastructure to vehicular (I2V) or vehicle to vehicle (V2V) or vehicle to infrastructure (V2I) mode of communication in intelligent transportation systems (ITS). We developed pulse dual slope amplitude modulation (PDSAM) to address both flickering and dimming in VLC system and combines the properties of slope and amplitude variation resulting in improved bit error rate (BER) performance. © 2014 IEEE.

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Publication Type: Journal Article

Year of Publication Title

2020

A. N., Dr. Navin Kumar, and Lakshmi, V. Y. S., “GPU Accelerated Stratified Squamous Epithelium Biopsy Image Segmentation for OSCC Detector and Classifier”, Springer Journal on Signal processing and Control , 2020.

Workshop/Conference organized:

  • Dr. Navin Kumar organized and acted as Workshop Chair in IEEE 5th International Conference on 5G and Future Wireless Technologies (5G-FWT) 2020 in association with 15th IEEE ANTS held from 14-17 Dec 2020.
  • Dr Navin Kumar was invited as a Panelist during IEEE ANTS panel session on “IIoT for Industry 4.0” and represented academia.
  • Dr Navin Kumar was invited as invited speaker at 6G Knowledge Lab Inauguration and 36th GISFI meeting held on 21-22 Dec, in Herlin Denmark.
  • Dr Navin Kumar was invited to deliver 3-4 hours session on “Defining a Problem and Writing quality technical paper under Research Methodology workshop” organized by Wipro and Samsung on 5th December.
  • Dr Navin Kumar organized half day workshop on “Open Source for Communication” in association with IEEE ComSoc and Samsung on 12th December 2020.