Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

VIT Unitversity

Department of Communication Engineering

School of Electronics Engineering

Vellore Campus

World University root node

2019 International Conference on Vision Towards Emerging Trends in Communication and Networking (ViTECoN)

Monitoring of Groundwater level and Development of Control Mechanism based on Machine Learning Algorithm

Smart healthcare systems are essentially going to become an inevitable part of our day to day activities. Sophisticated health monitoring devices will be used to provide a safer and less accident-prone society. Their use in active accident mitigation and management will extend, in the coming years, to not only our home atmosphere but will also include manufacturing, transportation, work-place and agricultural milieu. As a matter of fact, real time healthcare monitors have been introduced in some high-end, expensive luxury cars such as Mercedes-Benz and Tesla. The design proposed is a low-cost and affordable, continuous healthcare monitoring system which aims to extend the use Internet of Things (IoT) to vehicular systems. It is designed to detect anomalies in the driver’s health conditions and take preventive actions to prevent road accidents. These actions include steadily reducing the vehicle’s speed and ultimately stopping it. Simultaneously, an alarm or warning is relayed to the nearby vehicles of the impending emergency that has occurred, thus cautioning them of a possible accident. An emergency message is spontaneously relayed to the concerned medical personnel and to the emergency contacts–relatives of the driver.

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International Journal of Engineering & Technology

Real-Time Monitoring of Driver’s Biometrics to Prevent Multi-Vehicle Chain Collisions Caused by Impending Medical Emergencies

A soft switched single switch isolated dc-dc conveys proposed in this paper. This converter works on the principle of zero current switching (zcs) and zero voltage switching (zvs). The circuit comprises lossless snubber with low rating. The switch works on zcs during turn on and zvs during turnoff. The diodes are based on zcs turn on and turnoff conditions. This paper presents the concept of soft switching and its applications to dc-dc converter. The losses due to soft switching and hard switching are compared.

Department of Energy and Power Electronics

School of Electrical Engineering

Department of Electrical Engineering

IOP Conference Series: Materials Science and Engineering

Soft switched DC-DC converter

The multiple input Multiple Output (MIMO) is a wireless technology that can offer high spectral efficiency, capacity gain and/or diversity gain. On the other hand, the Worldwide Interoperability for Microwave Access (WiMAX) is a promising wireless technology which delivers data at high rates covering larger area. To retrieve desired signals in such technologies, we need to incorporate appropriate Channel estimation and signal detection techniques at the receiver. Thus, in this paper we propose Scaled Least Square-Maximum Likelihood (SLS-ML) and Reduced Minimum Mean Square Error-ML (RMMSE-ML) receivers for MIMO system under WiMAX environment. The proposed techniques are consistently outperforming the exiting Least Square-Maximum Likelihood (LS-ML) and Minimum Mean Square Error-ML (MMSE-ML) receivers. The RMMSE and SLS techniques minimize channel estimation error and the Maximum Likelihood (ML) detector cancels residual interference from other transmitting antennas. In the simulation study, the Bit Error Rate (BER) performance evaluation of 2×2 and 4×4 antenna structures with different detector and channel estimator techniques over various Erceg's channel models has been discussed. The investigations show that the ML detection applied to the mobile WiMAX systems provide better performance than other detector systems, irrespective of the number of antenna array size and the fading effect.

International Journal of Intelligent Engineering and Systems

Efficient Channel Estimation and Signal Detection Schemes for Multiple Input and Multiple Output System under WiMax Environment

International Journal of Communication Networks and Distributed Systems

An energy-efficient wireless communication scheme using Quint Fibonacci number system

International Conference on Information Communication and Embedded Systems (ICICES2014)

An electronic walking stick for blinds

i-manager’s Journal on Wireless Communication Networks

Mobile- Microcontroller Based Wireless Communication For The Control Of Appliances Integrated With Their Automation

i-manager's Journal on Circuits and Systems

PC Cooling fan using Pulse Width Modulation

All around the globe, various research oriented work is going regarding the optimization of orthogonal frequency division multiplexing (OFDM) for wide range of applications. Coded-OFDM eliminates interference (ISI) and is robust to radio fading channels impairments. Thus OFDM offers higher data throughput with increased reliability in data transmission. Since the Ultra wideband (UWB) spectrum has the unlicensed nature, all wireless devices sharing the spectrum must coexist. According to Multi Band OFDM Alliance (MBOA), multiband OFDM (MB-OFDM) has the advantageous feature of complying with local regulations by dynamically turning off certain tones or channels in software. But disadvantage is the side-band interferences in UWB caused by MB-OFDM. We propose a soft-spectrum adaptation based Detect and Avoid (DAA) mechanism to suppress the undesired interference. Detection technique is based on power spectrum density estimation and Avoidance mechanism is based on sub carrier nullifying using windowing technique. A type of block Turbo code modulation scheme is employed where the side-band interferences are attenuated quickly. Simulation result of soft-spectrum based DAA technique is shown along with SNR performance comparison between coded and uncoded OFDM. © 2013 IEEE.

Department of Design and Automation

School of Mechanical Engineering

2013 International Conference on Communication and Signal Processing

Interference reduction in MB-OFDM ultra wideband systems using Turbo code

2011 10th International Conference on Telecommunication in Modern Satellite Cable and Broadcasting Services (TELSIKS)

Performance comparison of NBI suppression methods for MIMO VDSL systems

International Journal of Computer and Electrical Engineering

Adaptive OFDM for High Mobility Computer Application

International Journal of Computer Theory and Engineering

Low -Complex ICI Reduction Due to Channel Estimation Error in OFDM Systems Using VSB-VBL Technique for High Mobility Applications

2009 International Conference on Advances in Recent Technologies in Communication and Computing

ISI and Self-Noise Reduction Using Symbol-Rate Adaptive Receiver within a Detection Guided Rake Receiver

OFDM based wireless system provides high spectral efficiency but they are very sensitive to Doppler shift. High mobility causes the channel to be fast fading channel. The rapid variation of the channel can induce Inter Carrier Interference (ICI). ICI due to carrier frequency offset can be mitigated by accurate frequency synchronization but ICI due to fast fading channel is more difficult to handle. Thus ICI reduces the throughput and increases the BER. In this paper we proposed an OFDM system which will use Variable Sub carrier Bandwidth (VSB) with Variable Bit Loading (VBL) to minimize the effect of ICI due to high mobility. We investigate the performance of such VSB-VBL OFDM system with Fixed Sub carrier Bandwidth (FSB-OFDM) system based on Signal Interference to Noise Ratio (SINR). © 2009 IEEE.

SINR Improvement in OFDM Systems Using VSB-VBL Technique for High Mobility Applications

More than 23% of annual vehicle accidents are rear-end collisions, this gives an important test-case for enhanced collision avoidance approaches based on v2v wireless communications. V2V wireless network concern with the impact of a IEEE 802.11 based multi-hop MAC protocol that propagates an emergency warning message (EWM) down a platoon of cars on a highway. The design objective is to ensure reception of this message with stringent delay constraints so as to provide drivers with requisite available manoeuvre time (AMT) to avoid rear-end collision. This V2V wireless communication protocol provides a realistic simulation in Ns-2 for various topologies (lane-1&amp; lane-3) and the performances were evaluated for different parameters such as EWM delay, delay due to overhead packets and probability of successful delivery of the emergency warning message (EWM). © 2009 IEEE.

Department of Embedded Technology

Department of Software Systems

School of Computer Science and Engineering

V2V Wireless Communication Protocol for Rear-end Collision Avoidance on Highways with Stringent Propagation Delay

2008 International Conference on Computer and Communication Engineering

Inter-satellite laser communication system