Prof. Sethuraman Rao is an Associate Professor at Amrita Center for Wireless Networks and Applications, Amrita University, Kollam, Kerala, India. He holds a Masters degree in Computer Science and a Bachelor's degree in Mechanical Engineering from IIT Madras, India. He has over 20 years of international experience in the networking industry having held technical and management positions at Juniper Networks, Alcatel-Lucent and a few startups.


  • M. Tech., Computer Science, I. I. T. Madras, Chennai, India
  • B. Tech., Mechanical Engineering, I. I. T. Madras, Chennai, India


Publication Type: Conference Proceedings
Year of Conference Publication Type Title
2015 Conference Proceedings Jennath H S, Raj Dhanesh, M, K. Anju, and N.Sethuraman Rao, “Comparative Study of Backhaul Options for Communication at Sea”, CNC 2015 Sixth International Conference on Advances in Communication, Network, and Computing. Chennai, India, 2015.
2015 Conference Proceedings S. Unni, Raj Dhanesh, Sasidhar, K., and N.Sethuraman Rao, “Performance measurement and analysis of long range Wi-Fi network for over-the-sea communication”, Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt), 2015 13th International Symposium on. IEEE, Mumbai, pp. 36 - 41, 2015.[Abstract]

Currently, Indian fishermen use handheld radios or satellite phones for offshore communication. While the former is based on broadcast communication with its range limited by Line-of-Sight, the latter is expensive. Therefore, lack of connectivity-at-sea is a huge problem for many Indian fishermen. Hence, this work prescribes a hierarchical point-to-multi-point backhaul network using long range (LR) Wi-Fi technology. It is a multi-hop network consisting of base stations and clusters of boats. Each boat-cluster forms a wireless mesh access network. A field-trial was conducted at sea to measure and analyze the coverage and connectivity of the P2mP LR Wi-Fi backhaul network, using commercially available 5 GHz base stations, antennas and customer premises equipment (CPE). Several parameters such as transmission power level, mechanical antenna tilt at the base station and channel bandwidth were fine-tuned to maximize the range. This paper discusses the observations and the results obtained.

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2013 Conference Proceedings S. Rao, Deepak, S., Preeja Pradeep, and N.Sethuraman Rao, “Parametric analysis of impact of jamming in wireless sensor networks”, Proceedings of the IEEE Tenth International Conference on Wireless and Optical Communications Networks (WOCN). IEEE, Bhopal, pp. 1-5, 2013.[Abstract]

Jamming-based denial of service attacks are a real threat in wireless sensor networks. This paper studies and analyzes the impact of jamming on micaz motes running TinyOS and explores ways to mitigate the impact. Jamming is facilitated by disabling carrier sensing on the jammer nodes. Jamming attack is detected by tracking RSSI and PDR at the receiver. By varying several parameters at the sender such as power level, packet size, distance from the jammer etc., various jamming mitigation methods are explored and the results presented along with theoretical analysis.

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Publication Type: Journal Article
Year of Conference Publication Type Title
2015 Journal Article D. B. Nair, Raj Dhanesh, and N.Sethuraman Rao, “Security Considerations in a Marine Communication Network for Fishermen”, AIRCC International Journal on Cybernetics & Informatics(IJCI) – CNC 2015, vol. 4, 2015.[Abstract]

With the recent advancements in and popularity of wireless networks, the security based issues are also increasing considerably. In this paper, we look at the data security and situational security vulnerabilities in the communication network for fishermen at sea being developed by our research center. We are proposing certain solutions and algorithms for avoiding some of the situations. They are Adaptive Contextaware Transmission Power Control (ACTPC) as a proposed solution for preventing unauthorized users at the maritime border, along with border alert and distress alert. The algorithms are implemented using a network of MICAz motes.

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2015 Journal Article J. Mary Varghese, N.Sethuraman Rao, K.V., N., and Varghese, V. T., “A survey of the state of the art in ZigBee”, International journal on cybernetics and informatics(IJCI), 2015.
2015 Journal Article N.Sethuraman Rao, Rahul, A., G., G. Krishnan, and H., U. Krishnan, “Near Field Communication (NFC) Technology: A Survey”, International journal on cybernetics and informatics(IJCI) 2015, 2015.
Publication Type: Conference Paper
Year of Conference Publication Type Title
2015 Conference Paper B. Aswini, Raj Dhanesh, N.Sethuraman Rao, and Kalyan, P. S., “A Network Operations Center for a Communication Network of Fishing Vessels at Sea”, in Sixth International Conference onAdvances in Communication, Network, and Computing – CNC 2015, Chennai, India, 2015.
2015 Conference Paper P. A. Sumayya Balkees, Sasidhar, K., and N.Sethuraman Rao, “A survey based analysis of propagation models over the sea”, in 2015 International Conference on Advances in Computing, Communications and Informatics, ICACCI 2015, 2015, pp. 69-75.[Abstract]

<p>The design of communication architecture over a sea environment is challenging since it requires careful analysis of different factors such as multipath propagation, antenna characteristics and mobility that affect a signal. Although existing work has addressed a few factors, there is no work which provides a complete analysis of path loss incorporating such factors and how they affect on Received Signal Level. To get a clear picture of what work has been proposed in the literature, we present a survey article that gathers information about various propagation models used and proposed for maritime environment. We analyze each work based on the simulation set up, number of factors considered, error differences between simulated and experimental data and so on. We believe this article will help to identify the current state in simulation and analysis of communication links over the sea environment. © 2015 IEEE.</p>

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2015 Conference Paper S. R., N., D., and N.Sethuraman Rao, “A Universal ICT Device Controller for the Visually Challenged”, in International Conference on Advances in Communication Network and Computing-CNC, Chennai, Chennai, 2015.
2015 Conference Paper N.Sethuraman Rao, R., A. V., and N., D., “RF Based Talking Signage for Blind Navigation”, in International Conference on Advances in Communication Network and Computing-CNC, , Chennai, 2015.
2014 Conference Paper R. Narayanan, V. M. Lekshmy, N.Sethuraman Rao, and Sasidhar, K., “A Novel Approach to Urban Flood Monitoring Using Computer Vision”, in Computing, Communication and Networking Technologies (ICCCNT), 2014 International Conference on, 2014.[Abstract]

Due to the high density of buildings and improper water drainage facilities, flash floods are prevalent in cities. In such scenarios, to extend timely aid, it is often required to estimate the level of flood in different parts of the affected zone. This paper presents a novel method employing participatory sensing and computer vision to estimate the flood level. The method involves the participants capturing and uploading images of the partially submerged static structures such as buildings, lampposts etc., using their smart phones or other intelligent devices. The captured images are geo-tagged and uploaded to a server. The feature matching algorithm, SIFT finds the corresponding matching feature points between the captured and a reference image at the server. The flood line is then estimated and drawn against the reference image. To optimize the network bandwidth usage, images with average resolutions are used. This method yields immediate and considerably accurate results thus helping in isolating areas that have been severely impacted for timely help. More »»
2014 Conference Paper N.Sethuraman Rao, Nithya, G. K., and Rakesh, K., “Development of a wireless sensor network for detecting fire and Gas leaks in a collapsing building”, in Computing, Communication and Networking Technologies (ICCCNT), 2014 International Conference on, 2014.[Abstract]

High-rise commercial and residential buildings are very common in today's modern cities and are subject to fires and gas leaks. When such buildings collapse, however, it is imperative that methods for the rescue and evacuation of residents be considered. This paper mainly focuses on detecting potential occurrences of cascading disasters due to fires and gas leaks in a collapsing building by frequently communicating with an Incident Management System via a wireless sensor network and UAVs. Using QualNet, an in-depth study of various antenna options and their characteristics is done and the selection of a suitable antenna, based on this study, is discussed. The network characteristics of ZigBee at different operating frequencies are also analyzed. Furthermore, an algorithm is proposed to deploy a wireless sensor network to detect fires, gas leaks, etc., using minimal number of ZigBee nodes. More »»
2013 Conference Paper S. Simi, Kurup, R., and N.Sethuraman Rao, “Distributed task allocation and coordination scheme for a multi-UAV sensor network”, in IFIP International Conference on Wireless and Optical Communications Networks, WOCN, Bhopal, Madhya Pradesh, 2013.[Abstract]

<p>Unmanned Aerial Vehicle (UAV) networks require successful mission execution, which is dependent on task planning and control. In this paper, we propose a distributed task allocation algorithm for a multi-UAV sensor network for sensing thorium intensities in the coastal areas of India. A power-aware coordination and planning approach is used to coordinate the activities of multiple UAVs. Depending on the availability of resources in each sensing UAV unit, each UAV initiates a task-scheduling algorithm and distributes its remaining tasks dynamically to other UAVs. The control station sends control information to the UAVs and receives the sensed parameters along with the location information from each UAV. The task allocation algorithm was simulated successfully using a network of static motes. The network was more effective and efficient with the use of this task allocation algorithm, thus contributing to improved mission execution in UAV networks. © 2013 IEEE.</p>

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