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2) Fault Tolerant Data Dissemination Protocols in Sensor Networks (Aug ’04 – Dec ‘06)


Ravish Khosla
E-mail: rkhosla(at)purdue.edu Education: ? PhD in Electrical and Computer Engineering, Purdue University Expected Graduation Date: May 2010 GPA: 4.00/4.00 Master of Science in Electrical and Computer Engineering, Purdue University Thesis Title: Reliable data Dissemination in Energy Constrained Sensor Networks Graduated: August 2006 GPA: 4.00/4.00 Bachelor of Technology (Honors) in Electrical Engineering Indian Institute of Technology, Kharagpur, India Minor: Electronics and Electrical Communication Engineering Graduated: May 2004 GPA: 9.34/10.00, GPA in Minor: 9.54/10.00

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Research Interests: Computer Networks, Network Security, Information Security, Ad-hoc and Sensor Networks Research Experience: 1) Evaluating Resilience of the Internet to Security Attacks (Jan ’07 – Present) Advisors: Dr. Sonia Fahmy and Dr. Charlie Hu, Purdue University - Focus on Border Gateway Protocol (BGP), the Interdomain Routing Protocol in internet - Released a freely-downloadable Toolset written in C++ that computes AS relationships - Working on analyzing the dynamics of BGP which will help in evaluating resilience 2) Fault Tolerant Data Dissemination Protocols in Sensor Networks (Aug ’04 – Dec ‘06) Advisors: Dr. Saurabh Bagchi and Dr. Edward J. Coyle, Purdue University - Designed a fault-tolerant energy aware data dissemination protocol for Sensor Networks - Worked on GTSNets, a discrete event simulator in C++ used for Sensor Networks - Modified lower layers of the simulator and developed various applications to run on top of the lower layers - Resulted in publications in IEEE WCNC ’07 and IEEE VTC ‘07 3) Reliable Data Dissemination using Trust in Sensor Networks (Jan ’05 – Dec ’05) Advisor: Dr. Saurabh Bagchi, Purdue University - Designed a protocol for data dissemination using trust in hierarchical sensor networks - Uses a metric ‘trust’ maintained at each node for its neighbors - Protocol builds on TIBFIT, which uses trust for determining location of events - Uses trust for multi-hop routing to the Base Station - Reduces location determination error in the event of malicious nodes - Resulted in a Fast Abstract publication in IEEE DSN conference 2005

Ravish Khosla

17 September, 2007

4) Design of IEEE 802.11g compliant Wireless LAN system (Aug ’03 – Apr ’04) Advisor: Dr. Saswat Chakrabarti, I.I.T. Kharagpur - Part of a team developing Physical layer and MAC layer design compatible to the standard. - Simulated IEEE 802.11g Physical layer with bit rates till 54 Mbps. - Simulation was used in hardware implementation of the standard. 5) Equalization of 10 Gb Ethernet (GbE) multimode fiber links (May ’03 – Jul ’03) Advisor: Dr. Stephen E. Ralph, Georgia Institute of Technology - Simulated complete 10 GbE multimode fiber optical link using measured multimode fiber responses for different lengths of fiber. - Applied Decision Feedback Equalization (DFE) to the optical link. - Demonstrated reach extension of the optical link to 300 m. which is a 4x improvement over the existing IEEE standard of 82 m (for a BER requirement of 10-12). - Resulted in a publication in IEEE LEOS Conference, 2003 Work Experience: 1) Research Assistant, Purdue University (May 2007 – Present) - Released an open-source Toolset written in C++ that computes AS relationships - Toolset uses publicly available BGP routing tables and applies a well-known algorithm 2) Teaching Assistant, Purdue University (Aug. 2004 – Aug. 2006, Jan 2007 – Aug 2007) - Instructor for ECE 207: Electronic Measurement Techniques laboratory - Organized laboratory experiments, prepared weekly quizzes and assigned final grades - Helped improve my communication, interpersonal and organizational skills 3) Research Assistant, Purdue University (May 2006 – Dec. 2006) - Working on GTSNets, a discrete event simulator in C++ used for Sensor Networks - Developed a new Protocol, SPMS-Rec for optimizing energy consumption 4) Summer Intern, Georgia Institute of Technology (May – July 2003) - Simulated an optical fiber link using Matlab - Involved measurement of optical fiber response & signal processing operations 5) Project Member, School of Telecommunications, IIT Kharagpur (Jan. 2003 – May 2004) - Simulated Physical layer of IEEE 802.11a standard for Wireless LAN - Simulations done in C++ were used for implementation of the standard Publications: 1) Ravish Khosla, Xuan Zhong, Gunjan Khanna, Saurabh Bagchi and Edward J. Coyle, “Performance Comparison of SPIN based Push-Pull Protocols”, In IEEE Wireless Communications and Networking Conference (WCNC), March 2007. 2) Xuan Zhong, Ravish Khosla, Gunjan Khanna, Saurabh Bagchi and Edward J. Coyle, “Data-Centric Routing in Sensor Networks: Single-hop Broadcast or Multi-hop Unicast?”, In IEEE Vehicular Technology Conference (VTC), April 2007.

Ravish Khosla

17 September, 2007

3) Ravish Khosla, “Reliable Data Dissemination in Energy Constrained Sensor Networks”, Masters Thesis, August 2006 4) Ravish Khosla, Yu Cheng, and Saurabh Bagchi, "Reliable Data Dissemination using Trust in Multi-hop Sensor Networks", Fast Abstract, The International Conference on Dependable Systems and Networks (DSN), Japan, 2005. 5) Ravish Khosla, “Physical Layer Design of IEEE 802.11a compliant Wireless LAN”, B.Tech Thesis, May 2004. 6) Ravish Khosla, Kshitiz Kumar, Ketan M. Patel, Cattalen Pelard and Stephen E. Ralph, “Equalization of 10 GbE multimode fiber links”, Published in the Proceedings of 16th Annual Meeting of the IEEE Lasers and Electro-Optics Society (LEOS), 2003. Honors: 1. Awarded Magoon Award for Teaching Excellence from ECE department, Purdue University 2. Awarded Graduate Teacher Certificate (GTC) by Center for Instructional Excellence (CIE), Purdue University 3. Awarded Tellabs Research Assistantship at Purdue University for a period of 7 months 4. Awarded Graduate Teaching Assistantship at Purdue University for a period of two years 5. Awarded the Institute Silver Medal for having the highest GPA in a class of 70 in Electrical Engineering Department, IIT Kharagpur. Other Professional Activities: Reviewed Papers for IEEE Wireless Communications and Networking Conference (WCNC) ‘08 IEEE Wireless Communications and Networking Conference (WCNC) ‘07 Symposium on Reliable Distributed Systems (SRDS) ’06 International Conference on Parallel Processing (ICPP) ‘06 International Conference on Dependable Systems and Networks (DSN) ’05 Technical Skills: C, C++, Shell Scripting, Perl, HTML, CSS Simulation tools: Georgia Tech Sensor Network Simulator (GTSNets), Network Simulator (ns-2), Matlab Operating Systems: Linux, UNIX, Windows

References: Available on Request.

Ravish Khosla

17 September, 2007



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