Qualification: 
M.Tech

Prof. Sethuraman (Sethu) N Rao is an Associate Professor at Amrita Center for Wireless Networks and Applications, Amrita Vishwa Vidyapeetham, India. He holds a Master's degree in Computer Science and a Bachelor's degree in Mechanical Engineering from Indian Institute of Technology (IIT) Madras (Chennai), India. He has over 30 years of international experience in the networking industry and academia having held technical and management positions at Juniper Networks, Alcatel-Lucent and a few startups. He has over 50 research publications and two US patents to his credit.

His areas of interest include Wireless Local Area Networks, Wireless Security, Crowd-sourcing, Computer Vision, Software Defined Networks and Network Management.

Qualifications

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

Publications

Publication Type: Patent

Year of Conference Publication Type Title

2018

Patent

Dr. Maneesha V. Ramesh, Rangan, D. P. Venkat, and Sethuraman Rao, “Mobile Infrastructure for Coastal Region Offshore Communications and Networks ”, 2018.[Abstract]


A marine communication system has an on-shore base station providing a long-range network, an Internet router connecting the base station to an Internet network, a plurality of first fishing boats in a cluster, each having an onboard Access Router, and at least one second boat in the cluster equipped with Adaptive Backhaul Equipment, including a directional antenna and a backhaul transceiver capable of accessing the network provided by the base station. The access routers provide communication with communication devices used by fishermen aboard the boats, and at least one Access Router communicates with the equipment aboard the at least one second boat in the cluster, thereby providing Internet connectivity and email, voice, text and video communication through the base station and the Internet network, to the fishermen aboard the boats in the cluster.

More »»

2017

Patent

Sethuraman Rao, Dr. Maneesha V. Ramesh, and Rangan, D. P. Venkat, “Mobile Infrastructure for Coastal Region Offshore Communications and Networks”, 2017.[Abstract]


A marine communication system has an on-shore base station providing a long-range network, an Internet router connecting the base station to an Internet network, a plurality of first fishing boats in a cluster, each having an onboard Access Router, and at least one second boat in the cluster equipped with Adaptive Backhaul Equipment, including a directional antenna and a backhaul transceiver capable of accessing the network provided by the base station. The access routers provide communication with communication devices used by fishermen aboard the boats, and at least one Access Router communicates with the equipment aboard the at least one second boat in the cluster, thereby providing Internet connectivity and email, voice, text and video communication through the base station and the Internet network, to the fishermen aboard the boats in the cluster.

More »»

Publication Type: Conference Paper

Year of Conference Publication Type Title

2018

Conference Paper

D. George Koshy and Sethuraman Rao, “Evolution of SIM Cards – What’s Next?”, in 7th international Conference on Advances in Computing, Communications and Informatics (ICACCI 2018), Banglore, 2018.

2018

Conference Paper

A. S, Sethuraman Rao, and Bennaceur, D. K., “A Survey of Low Cost lock in Amplifiers for Sensor Application”, in 7th international Conference on Advances in Computing, Communications and Informatics (ICACCI 2018), Banglore, 2018.

2018

Conference Paper

V. S. Anusha, Nithya, G. K., and Sethuraman Rao, “A comprehensive survey of electromagnetic propagation models”, in 2017 International Conference on Communication and Signal Processing (ICCSP), Chennai, India, 2018.[Abstract]


Path loss is caused by the propagation characteristics and the obstacles between transmitter and receiver due to which signal strength is reduced in wireless communication. Analysis based on path loss models provides good initial estimate of the signal characteristics. Propagation models are used to determine the path attenuation based on parameters such as carrier frequency, transmitter-receiver distance, basestation antenna height, receiver antenna height and terrain profile (e.g. rural, suburban and urban). Propagation models are used for path loss estimation which is important for planning the deployment of base-stations and area of coverage. In this paper, different Propagation models such as Okumura's Model, Hata Model, Longley rice Model, Free Space Propagation Model, COST 231 Extension to Hata Model, COST 231 Walfisch Ikegami Model, Stanford University Interim (SUI) Model and Hata-Okumura Model are surveyed. A comparative analysis of these models is provided which can serve as a valuable guide for selecting the appropriate model for a specific application scenario.

More »»

2017

Conference Paper

M. M.S and Sethuraman Rao, “Comparative Analysis of IoT Protocols for a Marine IoT system”, in International Conference on Advances in Computing, Communications and Informatics (ICACCI), Banglore, 2017.

2017

Conference Paper

M. M.S and Sethuraman Rao, “A Survey of the State of the Art of 802.11ah”, in 2017 IEEE International Conference on Computational Intelligence and Computing Research(ICCIC), Coimbatore, 2017.

2017

Conference Paper

A. Viswanathan, B, S. Shibu N., Sethuraman Rao, and Dr. Maneesha V. Ramesh, “Security Challenges in the Integration of IoT with WSN for Smart Grid Applications”, in 2017 IEEE International Conference on Computational Intelligence and Computing Research(ICCIC), Coimbatore, 2017.

2017

Conference Paper

K. A, Kumar, S., and Sethuraman Rao, “Security Considerations for a Real Time Landslide Monitoring System”, in 2017 IEEE International Conference on Computational Intelligence and Computing Research, Coimbatore, 2017.

2017

Conference Paper

S. Krishnan, Sethuraman Rao, and S, A. M., “Security Considerations for IoT in Smart Buildings ”, in 2017 IEEE International Conference on Computational Intelligence and Computing Research(ICCIC), Coimbatore, 2017.

2017

Conference Paper

S. P. S, Menon, G. S., and Sethuraman Rao, “MICRO GRID: Security Issues and Solutions”, in 2017 IEEE International Conference on Computational Intelligence and Computing Research(ICCIC), Coimbatore, 2017.

2017

Conference Paper

D. George Koshy and Sethuraman Rao, “A Study of Various Aircraft Communication Technologies”, in 2017 2nd International Conference on Communication and Electronics Systems (ICCES), 2017.[Abstract]


The study of aircraft communication is both interesting and challenging as not many papers have been published in this area. Communication is the most important thing that an aircraft needs while in flight as well as on the ground or else it would be like a flightless bird. Lack of proper communication is considered as the major factor resulting in aircraft crashes, thus it is important to research into this area to ensure the safety of passengers and pilots on board. This paper surveys the existing communication technologies that serve the aircraft and the future adaptations that may be required in the field of communication for handling large amount of data coming to and from the aircraft. In addition, an alternate low cost technology using Long Range Wi-Fi is proposed to meet the demand for traffic handling.

More »»

2017

Conference Paper

A. S and Sethuraman Rao, “Comparison of Long Range Wi-Fi and IEEE 802.22 for Marine Connectivity”, in 2017 IEEE International Conference on Computational Intelligence and Computing Research(ICCIC), Coimbatore, 2017.

2017

Conference Paper

B.B. Nair and Sethuraman Rao, “Flood water depth estimation-A survey”, in 2016 IEEE International Conference on Computational Intelligence and Computing Research, ICCIC 2016, 2017.[Abstract]


Global warming induced drastic climate changes have increased the frequency of natural disasters such as flooding, worldwide. Flooding is a constant threat to humanity and reliable systems for flood monitoring and analysis need to be developed. Flood hazard assessment needs to take into account physical characteristics such as flood depth, flow velocity and the duration of flooding. This paper provides the researchers with a detailed compilation of the methods that can be used for the estimation of flood water depth. A comparative study has been done between the water depth estimation techniques based on image processing and those which does not involve image processing. The comparison is based on various attributes such as implementation methods, advantages, accuracy and cost. Image processing methods are classified based on various algorithms such as character recognition, feature extraction, region of interest (ROI), FIR filter etc. Similarly, non-image processing methods are classified based on hardware used such as sensors, level indicators, etc., and other signal based techniques. This study can be used to identify the best method for flood water depth estimation.

More »»

2017

Conference Paper

Sethuraman Rao and Aswathy, V. R., “An electronic escort for the visually challenged”, in 2016 IEEE International Conference on Computational Intelligence and Computing Research, ICCIC 2016, 2017.[Abstract]


Visually challenged people find it extremely difficult to move around especially in unfamiliar places without the help of an escort. They cannot read the visual signs and they need to look out for obstacles in their way and navigate around them. This work presents an electronic escort system to come to their aid. The system uses a smart phone in conjunction with a wearable RF module worn on the user's waist. The module is also equipped with an ultrasonic range finder to aid in obstacle detection. Locations of interest are also fitted with an RF device which keeps sending beacons periodically. The user's RF module receives the beacons and communicates the message to the smart phone over Bluetooth. The smart phone interprets and conveys the message to the visually challenged user as talking signage. The messages are delivered in the language chosen by the user which could be the user's native language. Thus the system creates an IoT environment around the visually challenged user to provide electronic escort service. Indoor locations such as wash rooms, elevators, entry/exit, etc. as well as outdoor locations such as bus stops, traffic lights, restaurants, etc. can be identified in this way. The system was implemented at our research center with ten different locations fitted with the RF device and was successfully tested with blindfolded people for its effectiveness. The system was also able to detect obstacles up to 5 meters away. © 2016 IEEE.

More »»

2017

Conference Paper

H. S. Jennath, Nandesh Nair, Sethuraman Rao, Raj Dhanesh, Narayanan, S., and Krishnaswamy, D., “A resilient self-organizing offshore communication network for fishermen”, in ACM International Conference Proceeding Series, 2017, vol. Part F125794.[Abstract]


Fishing is a major industry that provides the livelihood for millions of families worldwide. The fishing vessels are typically at sea for 5-7 days at a stretch completely cut off from the land. In a low-cost offshore communication system for fishermen currently being developed, a multilevel P2MP backhaul network connects clusters of boats at the fishing zones. Each cluster forms a wireless mesh network with multiple potential gateways to the backhaul network. This work proposes a resilient lightweight protocol for optimized dynamic provisioning of the backhaul network based on an adaptive, demand driven algorithm. A local controller, capable of running on any access router, selects the optimal subset of gateways so that the rest can be reconfigured as mobile base stations or switched to power saver mode. It assigns every boat in a cluster to the most appropriate gateway maximizing the utilization of gateways. A proof-of-concept implementation has been done with a hardware test bed and the results are very encouraging. © 2017 ACM. More »»

2015

Conference Paper

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.

2015

Conference Paper

S. R., N., D., and 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

P. A. Sumayya Balkees, Sasidhar, K., and 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>

More »»

2015

Conference Paper

B. Aswini, Raj Dhanesh, 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.

2014

Conference Paper

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 »»

2014

Conference Paper

R. Narayanan, V. M. Lekshmy, 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 »»

2013

Conference Paper

S. Simi, Kurup, R., and 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>

More »»

Publication Type: Journal Article

Year of Conference Publication Type Title

2015

Journal Article

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.

2015

Journal Article

J. Mary Varghese, 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

D. B. Nair, Raj Dhanesh, and 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.

More »»

Publication Type: Conference Proceedings

Year of Conference Publication Type Title

2015

Conference Proceedings

S. Unni, Raj Dhanesh, Sasidhar, K., and 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.

More »»

2015

Conference Proceedings

Jennath H S, Raj Dhanesh, M, K. Anju, and 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.

2013

Conference Proceedings

S. Rao, Deepak, S., Preeja Pradeep, and 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.

More »»