Qualification: 
M.E, BE
lekshmisn@am.amrita.edu

Lekshmi S. Nair currently serves as the Assistant Professor at the Department of Computer Science Engineering at Amrita School of Engineering, Amritapuri. She  has completed M. E. in Computer Science. She has 11 years of academic experience.

Publications

Publication Type: Conference Proceedings

Year of Publication Title

2018

K. Aswathy, Asok, P., Nandini, T., and Lekshmi S. Nair, “Handover Latency Improvement and Packet Loss Reduction in Wireless Networks Using Scanning Algorithm”, Recent Findings in Intelligent Computing, Advances in Intelligent Systems and Computing, vol. 708. Springer Singapore, Singapore, pp. 43-51, 2018.[Abstract]


In the era of wireless technology, communication caters many advantages such as increased mobility, productivity and scalability. One challenge in Mobile IPv4 is getting continuous access to the Internet. In this paper, we propose a scanning algorithm that would scan for the nearest access point and establish the connection. After the connection establishment, the packet transmission starts. We understand that the mobile node is not stationary, and hence, the scanning algorithm runs in the background and finds the next nearest access point and establishes the connection with the new access point. Using this technique, we aim to reduce the handover latency to a good extent, thereby reducing the packet loss. This paper gives an analysis to scale down the handover latency and maximize the packet transmission.

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2018

R. Akhil, Gokul, M. S., Menon, S., and Lekshmi S. Nair, “Automated Soil Nutrient Monitoring for Improved Agriculture”, 2018 International Conference on Communication and Signal Processing (ICCSP). IEEE, Chennai, India, pp. 0688-0692, 2018.[Abstract]


Agriculture contributes only 22% of income to Indian economy. The major cause to this drop is natural calamity and variations in the nutrients of soil due to environmental changes. Overcoming the awful situations due to natural calamity challenges is arduous. Technology can be applied to understand the variations in the soil nutrient thereby helping the farmer community to find out a positive solution. In this paper we have proposed a cost effective model that is deployed using sensors so that the analysis of the soil can be done in most simplest manner. The model discussed here has been experimented and proved to provide 90% accuracy.

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Publication Type: Journal Article

Year of Publication Title

2018

R. Akhil, Gokul, M. S., Sanal, S., Menon, V. K. Sruthi, and Lekshmi S. Nair, “Enhanced Navigation Cane for Visually Impaired”, Advances in Intelligent Systems and Computing, vol. 696, pp. 103-115, 2018.[Abstract]


Vision is an important aspect of brain functionality as it allows us to view our surroundings, and maintain the incisiveness of our mind. For a blind person, to walk without resistance, is the most difficult task. Visually impaired are compelled to depend on others for conducting daily activities, especially walk outdoor. As a humanitarian service, our paper aims to help the blind people to walk independently and enjoy the freedom of walking. The model we present here act as a virtual eye to the visually disabled persons, which helps them to navigate to their destinations without the help of others. This model uses a mobile app, concurrent with the lately developed system using the fundamental principles of Arduino Uno board is based on ATmega328 microcontroller. This module is appended to a walking stick so that it is manageable by a blind person. The sensor in the apparatus returns the span warns with a sound alert if any target can be deleterious to the blind person. The system brings a new domain, Internet of Things (IoT), to the fore of the blind people, to make their existence uncomplicated.

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Publication Type: Conference Paper

Year of Publication Title

2015

Lekshmi S. Nair, Arun, V. S., and Joseph, S., “Secure E-ticketing System Based on Mutual Authentication Using RFID”, in Proceedings of the Third International Symposium on Women in Computing and Informatics, New York, NY, USA, 2015.[Abstract]


E-ticketing system based on contactless smart card like RFID tags which are excellent alternative to paper ticketing system makes public transportation system easy to handle both in terms of accuracy and efficiency. This system is capable of solving three major issues of the existing system: Mutual authentication of E-ticket with the bus terminal and creation of travel record without any digital trace of user called Privacy preservation of user, bus needs to maintain the permanent internet connection to the backend which is practically difficult in real-world transportation system because of network unavailability in most of the rural area, blacklisting the users without contacting the backend database. Existing systems are not considering these issues which directly influence the efficiency and security of transportation system. RFID tag is vulnerable because anyone can read it without authorization. We have implemented certification-based mutual authentication algorithm and establishing the security channel before transmitting the confidential data between RFID tag and bus terminal for solving these issues. This system also gives travel history view option, even though it handles user in terms of pseudonym. We implemented an advanced e-ticketing system for the next generation public transportation using the low cost device like Raspberry pie and a RFID module, which make the system affordable for both transportation agent and user. The system gives prior importance on security and preserving privacy of the user.

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