U. Shripathi Acharya

Designation:

Professor

Date of Joining at NITK:

Friday, February 17, 1995

Professional Experience:

Total: 30 years and at NITK: 28 years

Contact Details

E-mail:

sripati.acharya1@gmail.com

shripathi.acharya@nitk.edu.in

Telephone:

+91-824-2473503, Mobile: +91-9845056189

Academic Background

• Ph.D.: Indian Institute of Science, Bangalore, 2005
• M.Tech: Karnataka Regional Engineering College (Mangalore University), 1992
• B.E: Manipal Institute of Technology (Mangalore University), 1989

Areas of Interest

1. Error Control Coding and its applications to Wireless Communication, Storage Systems and Wired Communication.
2. Free Space Optical Communication (both terrestrial and under–water).
3. Digital and Analog Communication.
4. Electromagnetic Waves and Radiating Systems.
5. Signal Detection and |Estimation
6. Electronic Design leading to socially relevant products/ processes.

Significant Projects

Sponsored Research Projects handled as Principal Investigator:

Project title: ``Secure Turbulence Resistant Free Space Optical (FSO) Links for Broadband Wireless Access Networks” funded by Ministry of Information and Communication technology, New Delhi. Project value: Rs. 116 Lakhs.
Project title: ``Uncoordinated, Secure and Energy Aware Access in Distributed Wireless Networks’’, (jointly with IIT Bombay, TIFR, Mumbai and NIT Durgapur) funded by Information Technology Research Academy, New Delhi. Project value: Rs. 21.25 Lakhs to NITK, Surathkal.
Project Title: Automatic warning Systems for unmanned Level Crossings on Indian Railways, funded by TEQIP-II, NITK, Surathkal. Project value: Rs. 4 Lakhs.

Sponsored Research Projects handled as Co-Principal Investigator:

Project Title: ``Development of cost effective Radiofrequency ablation system and magnetic hyperthermia equipment for thermal therapies of cancerous tumors” funded by Project IMPRINT, Duration: 2019- 2022, Project value: Rs. 65.0 lakhs, P.I: Dr. Ajay Yadav, Associate Professor, Department of Mechanical Engineering, NITK, Surathkal

Consultancy Projects:

Single line and Double line Simulators for the Indian railway signaling system. This project was executed for Konkan Railway Corporation (2007-09). (jointly with Prof. Ramesh Kini) Consultancy value: Rs. 1.92 Lakhs
Technical Support to Public sector banks in the procurement of Currency note sorting machines. (Multiple assignments since 2010): Under these assignments, I (along with Prof. Laxminidhi T) have provided complete support to public sector banks (Syndicate Bank, Corporation Bank and Vijaya bank) during the process of procurement of Currency note machines. We have assisted the banks in the framing of technical specifications for the machines, formulating procedures for testing to ensure that the functioning of the machines is in accordance with the regulations framed by the Reserve Bank of India and carrying out the various tests to qualify machines offered by various vendors. Consultancy value: In excess of Rs. 70 lakhs since 2010.

Product development for meeting Societal needs:

1. Design of an accurate system for measurement of moisture level in raw cashew seeds (Jointly with Kalbavi Cashews, Mangalore):
In this assignment, we are working along with Kalbavi Cashews, to development an accurate, portable and rugged instrument to measure the moisture content in raw cashew seeds that are procured from the farmer by the Cashew Industry. This is designed to quickly and accurately determine the average moisture content in a sample of raw cashew seeds. It will aid the industry in weeding out poor quality seeds and enable farmers supplying good quality cashew seeds to obtain a higher price for their produce. The instrument has been designed and two prototypes are undergoing field tests. (Co-investigators: Prof. Laxminidhi T, Professor E&C Department and Mr. Kalbavi Prakash Rao, CEO, Kalbavi Cashew Works)

2. Design of a non- invasive device to measure the pulse rate of a patient seated on a Dental Chair (jointly with College of Dental Sciences (CODS), KMC, Mangalore):
In this work, we are attempting to design and prototype a simple wrist mounted instrument which can detect accurately the pulse rate of the patient seated on the dental chair and inform the Doctor of any large and sudden fluctuations in the pulse rate through a wireless link. (Co-investigators: Dr. Karuna and Dr. Srikanth N, Associate Professors, CODS, KMC, Mangalore)

Outreach Activities:

Technical member of Tender evaluation committee (along with Prof. Laxminidhi T) for inspection of CCTV components procured for installation in Naxal affected districts.
Member of the team (along with Prof. Laxminidhi T) tasked with the responsibility of evaluating the accuracy of GPS systems installed in boats and lorries used for mining sand in Udupi district. We have tested and verified the functioning of GPS systems installed in boats and trucks carrying sand.
Was appointed as a technical member of the committee responsible for framing the tender for networking of Emission Testing Centers by the Transport Department, Government of Karnataka.

Supervision of Ph.D

Number of Ph. D completed: 10
Number of Ph. D in progress: 02

Significant Publications

List of Journal papers :

Ramavath, P. N., Acharya, U. S., & Suyan, N. K. (2020). Experimental Evaluation of Reliable Underwater Optical Communication in the Presence of Turbulence and Blockage. In Optical and Wireless Technologies (pp. 75-83). Springer, Singapore.
Ramavath, P. N., Udupi, S. A., & Krishnan, P. (2020). High-speed and reliable Underwater Wireless Optical Communication system using Multiple-Input Multiple-Output and channel coding techniques for IoUT applications. Optics Communications, 461, 125229.
Ramavath, P. N., Udupi, S. A., & Krishnan, P. (2020). Experimental demonstration and analysis of underwater wireless optical communication link: Design, BCH coded receiver diversity over the turbid and turbulent seawater channels. Microwave and Optical Technology Letters, 62(6), 2207-2216.
Ramavath, P. N., Acharya, U. S., & Krishnan, P. (2020). Co-operative RF-UWOC link performance over hyperbolic tangent log-normal distribution channel with pointing errors. Optics Communications, 125774.
Ramavath, P. N., Kumar, A., Godkhindi, S. S., & Acharya, U. S. (2018). Experimental studies on the performance of underwater optical communication link with channel coding and interleaving. CSI Transactions on ICT, 6(1), 65-70.
Raghavendra, M. A. N. S., and U. Shripathi Acharya. "Index modulation aided multi carrier power line communication employing rank codes from cyclic codes." Physical Communication 39 (2020): 100975.
Raghavendra, M. A. N. S., and U. Shripathi Acharya. "Non-orthogonal space–frequency block codes from cyclic codes for wireless systems employing MIMO-OFDM with index modulation." Physical Communication 34 (2019): 174-187.
Godkhindi Shrutkirthi S., Goutham Simha G.D.,U. Shripathi Acharya,“ Spatially Modulated Non Orthogonal Space Time Block Code: Construction and Design from cyclic codes over Galois Field", Physical Communication, Elsevier, Volume 35, August 2019, 100735.
Goutham Simha G.D, Shriharsha K, Neha .N, Raghavendra M.A.N.S and U.Sripati, “Redesigned Spatial Modulation for Spatially Correlated Fading Channels”, Springer Wireless personal communications, Volume 97 Issue 4, pp 5003-5030 (2017). (SCI).
Goutham Simha G.D, Shriharsha K, Raghavendra M.A.N.S and U.Shripathi Acharya, “A comprehensive framework for Double Spatial Modulation under imperfect channel state information”, Elsevier Physical Communication, Volume 25 Part 2, pp 519-526 (2017). (SCI).
Goutham Simha G.D, Raghavendra M.A.N.S, Shriharsha K and U.Shripathi Acharya, “Signal Constellations Employing Multiplicative Groups of Gaussian and Eisenstein Integers for Enhanced Spatial Modulation”, Elsevier Physical Communication, Volume 25 Part 2 pp 546-554 (2017). (SCI).
Lwaa Faisal Abdulameer, Jokhakar Jignesh D., U. Sripati and Muralidhar Kulkarni, “BER Performance Enhancement for Secure Wireless Optical Communication Systems Based on Chaotic MIMO Techniques”, Nonlinear Dynamics, An international Journal of Nonlinear Dynamics and Chaos in Engineering Systems, (SPRINGER), DOI:10.1007/s11071-013-1044-z.,September 2013.
Lwaa Faisal Abdulameer, Jokhakar Jignesh D., U. Sripati and Muralidhar Kulkarni, “BER Performance Enhancement for Secure Wireless Communication Systems based on DCSK-MIMO Techniques under Rayleigh Fading Channel”, Radioelectronics and Communications Systems”, (SPRINGER) Vol. 56, No. 10, pp. 481-492, September 2013.
Rajesh Shetty K, Ramakrishna, Prashantha Kumar H, Sripati U, “Design and Construction of BCH Codes for Enhancing Data Integrity in Multi Level Flash Memories”, International Journal of Information and Communication Technology (IJICT-Inderscience Publishers) Vol. 4, No. 1, ISSN: 1466-6642, pp. 40-60, March- 2012.
Prashantha Kumar H, Sripati U, Rajesh Shetty K, Shankarananda B, “Stack Decoding of Linear Block Codes for Discrete Memoryless Channel Using Tree Diagram”, ICTACT Journal on Communication Technology, Vol. 3, Issue 1, ISSN: 0976-0091, pp. 498-503, March-2012.
H. Prashantha Kumar, U. Sripati and K. Rajesh Shetty , “High-speed and parallel approach for decoding of binary BCH codes with application to Flash memory devices”, International Journal of Electronics, Taylor and Francis, December 2011.
Geetha Prakash, Muralidhar Kulkarni,U Shripathi, 2012, Classification of FSO channel models using Radial Basis Function Neural networks and their BER performance with Luby Transform Codes, International Journal of Artificial Intelligence (IJAI), 2012.
K.H. Prashantha, U.K. Vinuth, U. Shripathi, Rajesh K Shetty , Performance Analysis of stack Decoding on Block Coded Modulation Schemes using Tree Diagram, Radio electronics and communication systems,Vol.55, No.8, pp. 349 – 359, August 2012
Prashantha Kumar H, Shripathi U, Rajesh Shetty K and B. Shankarananda, Enhancing the Error Correcting Capability of Imai-Kamiyanagi Codes for Data Storage Systems by Adopting Iterative Decoding Using a Parity Check Tree, IETE Journal of Research, Vol. 58, Issue 4, pp. 272-278, July-Aug 2012.
Prashantha Kumar H, Shripathi U, Rajesh Shetty K, Shankarananda B, Stack Decoding of Linear Block Codes for Discrete Memoryless Channel Using Tree Diagram, ICTACT Journal on Communication Technology, Vol. 3, Issue1, ISSN: 0976-0091, pp. 498-503, March-2012.
Rajesh Shetty K, Ramakrishna, Prashantha Kumar H, Shripathi U, Design and Construction of BCH Codes for Enhancing Data Integrity in Multi Level Flash Memories, International Journal of Information and Communication Technology (IJICT-Inderscience Publishers) Vol. 4, No. 1, ISSN: 1466-6642, pp. 40-60, March- 2012.
H. Prashantha Kumar , U. Shripathi & K. Rajesh Shetty, High-speed and parallel approach for decoding of binary BCH codes with application to Flash memory devices, International Journal of Electronics, 2011, 1–11, Taylor and Francis.
Rajesh Shetty K, Shripathi U, Prashantha Kumar H, Shankarananda B, Design and Construction of Algebraic Codes for Enhancing Data Integrity in Flash Memories, International Journal of Advances in Communication Engineering, Vol. 2, No. 2, ISSN: 0975-6094, pp. 51-56, July-December 2010.
Myagmarbayar Nergui, U Shripathi Acharya , Rajendra Acharya U, and Wenwei Yu, Reliable and Robust transmission and storage techniques for Medical Images with Patient Information, Journal of Medical Systems,July 2009
Prashantha Kumar H, Shripathi U, Rajesh Shetty K, Shankarananda B, Soft decision Fano coding of block codes over discrete menoryless channel using tree diagram, Journal of Electrical Engineering, Vol.63, No. 1, ISSN 1335 - 3632, pp.59-64, Jan – Feb 2012.

List of Conference papers :

D.S.L Praharshita, Bethi Pardhasaradhi, Pathipati Srihari, U. Shripathi Acharya and G.V. K Sharma, ``High Frequency and Low Latency DSP Architecture for Information Fusion Matrix Fusion’’, accepted for publication in IEEE CONNECT 2021.
Ramavath Prasad Naik, U Shripathi Acharya, Nitin Kumar Suyan, "Experimental evaluation of Reliable Underwater optical communication in the presence of turbulence and blockage", International Conference on Optical and Wireless Technologies (OWT-2019), March 16-17, 2019.
Godkhindi Shrutkirthi S., Goutham Simha G.D and U. Shripathi Acharya, “A MIMO SM-NSTBC scheme for High Altitude Platform Communication systems: Study and Analysis”, at 6th IEEE International Conference on Signal Processing and Integrated Networks (SPIN 2019) 7 - 8 March 2019.
Godkhindi Shrutkirthi S., Goutham Simha G.D and U. Shripathi Acharya, “Performance of SM-NSTBC for correlated HAP fading channels with Imperfect-CSI”, “3rd International Conference on Optical & Wireless Technologies", (In Proceedings of OWT 2019).
Ramavath Prasad Naik, Amardeep Kumar, U Shripathi Acharya, "Experimental Studies on Performance of Optical Communication Links for Seawater Employing Channel Coding, Interleaving and Diversity Techniques", International Conference on Sonar Systems and Sensors (ICONS-2018), Feb 22-24, 2018.
M.A N S Raghavendra, Goutham Simha G.D and U. Shripathi Acharya “Non-orthogonal full rank space-time block codes over Eisenstein-Jacobi integers for MIMO systems” 2017 4th International Conference on Electronics and Communication Systems (ICECS).
Goutham Simha G.D, Shriharsha K, Raghavendra M.A.N.S, and U.Shripathi Acharya, “Modified Signal Design for Multistream Spatial Modulation over Spatially Correlated Channels”, published in Proceedings of the 6th IEEE “International conference on Advances in Computing, Communications and Informatics” Manipal Institute of Technology, Manipal, Karnataka, September 2017.
Raghavendra M A N S, Goutham Simha G.D and Udupi Sripati “Abelian codes over Eisenstein-Jacobi integers for MIMO systems” 2017 International Conference on Advances in Computing, Communications and Informatics (ICACCI).
Adaptive receive-antenna selection technique for Spatial Modulation MIMO systems, Neha N; Shriharsha Koila; Prashantha Kumar H; U. Sripati 2015 IEEE International Advance Computing Conference (IACC) Year: 2015 Pages: 547 – 551 IEEE Conference Publications.
Performance of Spatial-Modulation and spatial-multiplexing systems over Weibull fading channel, Goutham Simha G.D.; Shriharsha Koila; Neha N; U. Sripati. 2015 International Conference on Computing and Network Communications (CoCoNet) Year: 2015 Pages: 389 - 394, IEEE Conference Publications.
FPGA implementation of a BCH Codec for free space optical communication system, Shriharsha Koila; Goutham Simha G D; Muralidhar Kulkarni; U. Sripati 2014 International Conference on Advances in Computing, Communications and Informatics (ICACCI) Year: 2014 Pages: 1822 – 1826 Cited by: Papers (2) IEEE Conference Publications.

Achievements

Patent granted:
M Shankaranaryana Bhat, Udupi Shripathi, Omprakash M Sringeri, `` Alternative means for Conductor based short distance signal / Data transfer’’, Indian patent number 301828

• Six research scholars have completed their research work (for a Ph.D. degree) under my guidance (Four students have got their degrees and two have submitted their theses). These have been in the areas of Stream Cipher Systems, Space Time Block Codes for use on Wireless channels, Algebraic codes applied to Storage Devices for achieving information integrity, Application of Error Control codes to Power line channels, Evaluation of performance of Chaotic-MIMO systems to improve performance over Wireless channels and application of Fountain Codes to enhance information integrity over Free Space Optic Communication channels. Two research students are currently working on their research problems under my guidance. I have also guided one M.Tech. (by research) dissertation in the academic year 2011-13.

• I have successfully completed a major Research project entitled ` Secure Turbulence Resistant Free Space Optical (FSO) Links for Broadband Wireless Access Networks’ with an outlay of Rs. 130.56 Lakhs (Rs. 13.056 million). We carried out collaborative projects with the Light Wave and Optical Systems (LEOS) laboratory of the Indian Space Research Organization (ISRO) and the Transmission R&D group of Indian telephone Industries (ITI) Limited with the support provided by the project. Duration: July 2010 to December 2013.

(jointly with Prof. M. Kulkarni)

• A second research project entitled ` Uncoordinated, Secure and Energy Aware Access in Distributed Wireless Networks (jointly with IIT Bombay, TIFR Mumbai, and IIT Durgapur) sponsored by Information Technology Research Academy, Media Lab Asia with a Project Outlay of Rs. 20.25 Lakhs (for NITK) and a duration of three years (December 2013-December 2016) is under progress under my supervision at NITK.

• Design and commissioning of Simulator for training railway personnel on the Indian Railway Signaling System Client: Konkan Railway Corporation.

(jointly with Prof. Ramesh Kini M).

• I have been assisting Public Sector banks (jointly with Prof. Laxminidhi T) since 2009 (Corporation Bank, Syndicate bank, Vijaya bank) in their procurement of Currency note machines. This work involves assisting the respective banks in the framing of the Technical specifications of the machines for the tender, evaluating the machines for their compliance with specifications laid down by the Reserve Bank of India and conducting field tests to assess features such as the consistency of the machines during note sorting, the ability of the machine to detect suspect (fake) notes and the ability of the machine to perform the expected duties under working conditions prevailing in the Currency Chests/ branches in India.

• I was appointed as the Nodal Officer (academic) of the TEQIP-II program at NITK. I am currently also discharging the responsibilities of Co-coordinator of this project. I (along with Dr. Laxminidhi T) have designed a number of schemes (the scheme of Half Time Teaching Assistants, Postgraduate Research Associates, peer mentoring of First year students by Third year students etc were designed by us) to improve the teaching-learning environment at NITK with the support provided by this project. I have personally conducted several workshops (and facilitated the conduction of many more) to foster research and R&D activities at NITK.

• I have taught seven theory and three laboratory courses in the past four years at both UG and PG level at NITK. These courses are Electromagnetic Waves, Antennas and Propagation, Detection and Estimation Theory, Error Control Coding, MIMO Wireless Communication, Mathematical Foundations for Communication Engineering and Microwave Engineering. I have also served as the instructor for Basic Communication Lab, Advanced Communication lab and Product Design laboratories. I have also designed and fabricated several specialized instruments for the use of research scholars of Physics, Chemistry and Mechanical Engineering Departments.

More info::

Resume_U Shripathi Acharya_July 2021.pdf

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