Download PDF

Summary

The Thesis presents an idea to localize the sensor nodes by keeping the anchor nodes static and the non-anchor nodes dynamic for Hidden Markov Model (HMM) localization.

  • HMM defines its parameters that generate the respective probability matrices for the non-anchor nodes to get localized. Received Signal Strength (RSS) of the non-anchor node with HMM parameter are given as input to obtain the location estimate by evaluating the most probable sequence using Forward-Backward Algorithm and the maximum likelihood sequence using Viterbi Algorithm.  The advantage of the HMM is that it tends to converge the state sequence, which directly helps to reduce the traffic and subsequently consumes low power, reducing the estimation error.
  • Cluster localization is achieved by keeping the cluster head (anchor node) static and the cluster members (non-anchor node) dynamic. Coverage Preserving Clustering Protocol (CPCP) approach is proposed to form clusters for localization with HMM. Cluster localization of sensor nodes using HMM  obtains reduced error estimate and average energy dissipation.
  •  An innovative approach for improving the location accuracy using Bio-Inspired Optimization Algorithm. Optimizing the location accuracy is a one-time process to obtain better accurate location rather than longer sequence. A newer algorithm called hybrid Bacterial Foraging Algorithm_ Particle Swarm Optimization (BFA_PSO) is proposed for optimizing the location of nodes using HMM parameter as fitness function. The fitness function is optimized to obtain the location accuracy in an iterative manner by using hybrid BFA_PSO. The hybrid BFA_PSO optimization technique obtains the location accuracy and tends to converge faster for improved location accuracy.
  • In Hidden Semi-Markov Model(HSMM), the state process is assumed to be a semi-Markov chain with finite number of states by introducing the concept of state duration probability. The length of the observation sequence for each state is determined by the time duration of each state. The most likely state sequence is obtained by using the Viterbi algorithm. The optimal most likely state sequence is found by replacing the sum operations in the forward variable by maximization operations.  It is concluded that the HSMM represents significant improvement over the existing HMM for location estimation.
  • The dissertation concludes with an efficient localization method aimed to attain the location accuracy and less energy consumption for sensor network. Overall, the performance of proposed HMM for location estimation at various stages helps to reduce the error estimation and average energy dissipation for localization process.

Work experience

Sep 2008Jun 2014

Research Scholar 

Anna University, Chennai

Studied Course Work of 4 subjects from Jan 2009 - Dec 2009 (1 Year)

  • Wireless Networks
  • Telecommunication System Modeling and Simulation
  • Wireless Sensor Networks
  • Communication Network Security

Started with the Preliminary Survey for Research, Conceived the research work,simulated,presented papers in conferences, published in journals  and concluded with final thesis ( 4 years 6 months)

Jul 2007May 2008

Assistant Professor

AMC Engineering College, Bangalore.

Handled classes for UG  and PG students (11 Months)

Sep 2006Jul 2007

Assistant Professor

Shirdi Sai Engineering College, Bangalore.

Handled classes for UG students (11 Months)

Apr 2001Aug 2006

Lecturer

Shirdi Sai Engineering College,Bangalore.

Handled classes for UG students (5 years 5 Months).

Jan 1997Sep 1999

Lecturer

Adhiyamaan College of Engineering, Hosur

Handled classes for UG and PG students ( 2 years 9 Months)

Aug 1994Mar 1995

Lecturer

Adhiyamaan College of Engineering, Hosur

Handled classes for UG students ( 8 Months)

Education

Sep 2008Jun 2014

PhD Doctorate

Anna University, Chennai

Awarded degree in Information and Communication Engineering

Specialization in Wireless Sensor Networks

Oct 1999Aug 2001

M.Tech

B.M.S. College of Engineering,Bangalore. ( Affiliated to Visveswariah Technological University,Belgaum.Karnataka)

Specilization in Digital Communication

Jun 1994May 1997

M.B.A

Madurai Kamaraj University, Madurai.

Specilization in Marketing Research

Jun 1990May 1994

B.E

Periyar Maniammai College of Technology for Women, Thanjavur. ( Affiliated to Bharathidasan University, Tiruchirapalli.)

Specialization in Electronics and Communication Engineering

Journal Publications

    1. Contributed a paper titled, “Secure Localiation and Key Distribution in Wireless Sensor Networks,” IJREAT International Journal of Research in Engineering & Advanced Technology, May 2014, vol 2, Issue 2, pp. 1-5.
    2. Published a paper titled, “RSS based localization of sensor nodes by Learning Movement Model,” WSEAS Transactions on Communications, November 2013,  vol. 12, Issue 11, pp. 559-569.
    3. Published a paper titled, “Cluster Localization of Sensor Nodes Using Learning Movement Patterns”, Springer LNCS Communications in Computer and Information Science,January 2011, vol. 32, pp. 148–157.
    4. Published a paper  titled, “Scenario Based Analysis of Localization of Sensor Nodes Using HMM”, Springer LNCS Communications in Computer and Information Science ,July 2010, vol. 90, pp.80-89.

    International / National Conferences

    1. Contributed a paper in the International Conference titled, “Bio-inspired algorithm for optimizing the Localization of Wireless Sensor Networks’, In: Proc. of The Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT - 2013), pp. 1-5.
    2. Contributed a paper in the International Conference titled, “Energy aware optimal cluster head selection in Wireless Sensor Networks”, In: Proc. of The Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT - 2013), pp. 1-4.
    3. Presented a paper in the International Conference titled,” Localization in Wireless Sensor Networks by Hidden Markov Model”, In: Proc. of IEEE The Second International Conference on Advanced Computing (ICoAC-2010),December 2010, pp.14-18.
    4. Contributed a paper in the International Conference titled,” Efficient Cluster based Robust Localization of Mobile anchor Nodes in Wireless Sensor Network”, In: “International Conference on Mathematical Computing and Management” (ICMCM-2010) organized by MACFAST, Tiruvalla on 17th – 19th June 2010.
    5. Presented a paper in the International Conference titled, “Location   Estimation of Sensor Nodes Using Learning Movement Patterns”, In: Proc. of IEEE Students Technology Symposium, April 2010, pp.146-150, 
    6. Contributed a paper in the 3rd International Conference titled, ”Localization in Wireless Sensor Networks by learning movement pattern using Hidden Markov Model”, In: Proceedings of Computer Science & Engineering, LVIV, Ukraine, 2009, pp. 143-147.
    7. Contributed a paper in the 2nd National Conference titled,” Localization in Wireless Sensor Networks by learning movement prediction”, In: “Recent Research Trends in Advanced Computing” (RCAC-2009) organized by Thiagarajar School of Management, Madurai on 17th April 2009.
    8. Presented a paper in the National Conference titled, ”Simulation & Synthesis of Convolutional Encoding & Viterbi decoding on FPGA” in “Recent Trends In Electronics & Communication” organized by SJBIT, Bangalore on 4th May 2007.

    Training Programs Attended

    1. Attended 2 days Workshop on “Research and Writing” held at Anna University Chennai, Conducted by Centre for Empowerment of Women on 14th & 15th September 2011.
    2. Attended 2 week ISTE Workshop on “Effective Teaching / Learning of Computer Programming” under the National Mission on Education through ICT (MHRD) conducted by IIT Bombay in association with  Anna University Chennai from 14th - 24th December 2009.
    3. Attended one-day Workshop on “Network Simulator NS2” held at Pondicherry Engineering College Pondicherry, Conducted by Dept. of ECE on 14th December 2009.
    4. Attended one-day Seminar on “INDO-US Seminar on Research Perspectives for University Excellence: A US Model for India” held at Anna University Chennai on 10th August 2009.
    5. Attended 2 days National Workshop on “MATLAB & its Applications” held at NITTTR Chennai on 21st & 22nd May 2009.
    6. Attended 2 days Workshop on “Thesis Writing for Research Scholars” held at Anna University Chennai, Conducted by Centre for Empowerment of Women on 4th & 5th December 2008.
    7. Attended 2 days National Workshop on “Wireless Communications “held at IISc Bangalore, Conducted by BNMIT in association with IIITB on 17th & 18th August 2007.
    8. Attended one-day seminar “Introduction to Embedded System & Application of Embedded Systems in Wireless Technology” held at SSEC, Bangalore on 30th April 2007.
    9. Attended 2 days Seminar on “Real Time Implementation of DSP Algorithms” held at VkIT, Bangalore on 23 & 24th February 2007.
    10. Completed the Training on “Internal Quality Auditing based on ISO 9001:2000” held at SSEC, Bangalore on 4th December 2006.
    11. Attended 2 days National Workshop on “Advanced Signal Processing” held at BNMIT, Bangalore on 7th & 8th of April 2006.
    12. Attended 3 days Workshop on “Flash Microcontroller” held at BIT, Bangalore on 4th – 6th August 2005.
    13. Attended 3 days National Workshop on “Advanced Communication Technologies” held at BNMIT, Bangalore on 22nd - 24th April 2005.
    14. Attended 3 days National Seminar on “ Recent Trends in Communication Engineering”held at NMIT, Bangalore on 26 – 28th November 2004.
    15. Attended 2 days Workshop on “Wireless Networking Devices & Systems” held at KSIT, Bangalore on 29 & 30th of March 2004.

    Professional Commitment

    1. Contributed as Teaching Assistant for one week ISTE Workshop on “Computer Networking” under the National Mission on Education through ICT(MHRD) conducted by IIT Bombay, in association with Anna University Chennai  from 30th June to 5th July,2014.
    2. Contributed as Teaching Assistant for two week ISTE Workshop on “Basic Electronics” under the National Mission on Education through ICT(MHRD) conducted by IIT Bombay, in association with Anna University Chennai  from 28th June to 8th July,2011.
    3. Acted as Deputy Chief Superintendent (Internal) for VTU Theory Exams  in Shirdi Sai Engineering College, Bangalore during June 2007.
    4. Acted as Deputy Chief Superintendent (Internal) for VTU Theory Exams in Shirdi Sai Engineering College, Bangalore  during June 2005.
    5. Acted as Deputy Chief Superintendent (Internal) for VTU Theory Exams in Shirdi Sai Engineering College, Bangalore  during Jan 2004.

    Awards & Appreciation

    • Recipient of award of appreciation for Academic Excellence.
    • Recipient of 8gm Gold Coin from management for dedication and superior performance.

    Membership of Engineering Bodies

    • Member, Indian Society for Technical Education (ISTE)
    • Member, Institution of Electronics and Telecommunication Engineers (IETE)

    Citations

    • My Papers has got 17 citations in Google Scholar and has an h-index value of 2 and i10-index value of 1.
    • My Paper has got cited in Google book named “Distributed Sensor Networks, Second Edition – Image and Sensor Signal Processing” by CRC Press.

    Research Interests

    • Wireless Sensor Networks
    • Security in WSN
    • Wireless Networks
    • Adhoc Networks
    • Cloud Computing

    Personal

    Date of Birth : 09 Aug 1973

    Spoken Languages: Tamil, English, Kannada, & Hindi.