Ramachandran Ramjee
PRINCIPAL RESEARCHER
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I am a researcher in the Mobility, Networks, and Systems group. Here is a short bio. You can reach me at ramjee@microsoft.com
Some recent publication and project information is listed below. Please proceed to my previous homepage for older publications and other information.
Publications
- Pavan Kumar Athivarapu, Ranjita Bhagwan, Saikat Guha, Vishnu Navda, Ramachandran Ramjee, Dushyant Arora, Venkat Padmanabhan, and George Varghese, RadioJockey: Mining Program Execution to Optimize Cellular Radio Usage, ACM MOBICOM, 22 August 2012
- Krishna Chintalapudi, Bozidar Radunovic, Vlad Balan, Michael Buettener, Srinivas Yerramalli, Vishnu Navda, and Ramachandran Ramjee, WiFi-NC : WiFi Over Narrow Channels, no. MSR-TR-2012-17, 27 April 2012
- Krishna Chintalapudi, Bozidar Radunovic, Vlad Balan, Michael Buettener, Srinivas Yerramalli, Vishnu Navda, and Ramachandran Ramjee, WiFi-NC : WiFi Over Narrow Channels, in NSDI, NSDI, 27 April 2012
- Eugenio Magsiretti, krishna kant chintalapudi, Bozidar Radunovic, and Ramachandran Ramjee, WiFi-Nano : Reclaiming WiFi Efficiency through 800 ns slots, in Mobicom, September 2011
- Anand Iyer, Krishna Kant Chintalapudi, Vishnu Navda, Ramachandran Ramjee, Venkat Padmanabhan, and Chandra Murthy, SpecNet: Spectrum Sensing Sans Frontières, in 8th USENIX Symposium on Networked Systems Design and Implementation (NSDI), USENIX, March 2011
- Anand Iyer, Krishna Chintalapudi, Vishnu Navda, Ramachandran Ramjee, Venkat Padmanabhan, and Chandra Murthy, Spectrum Sensing Sans Frontieres, no. MSR-TR-2011-21, February 2011
- Aaron Schulman, Vishnu Navda, Ramachandran Ramjee, Neil Spring, Pralhad Deshpande, Calvin Grunewald, Venkata N. Padmanabhan, and Kamal Jain, Bartendr: A Practical Approach to Energy-aware Cellular Data Scheduling, in Mobicom, Association for Computing Machinery, Inc., 20 September 2010
- Tathagata Das, Pradeep Padala, Venkat Padmanabhan, Ramachandran Ramjee, and Kang G. Shin, LiteGreen: Saving Energy in Networked Desktops Using Virtualization, in USENIX Annual Technical Conference [BEST PAPER], USENIX, 23 June 2010
- Tathagata Das, Prashant Mohan, Venkat Padmanabhan, Ramachandran Ramjee, and Asankhaya Sharma, PRISM: Platform for Remote Sensing using Mobile Smartphones, in International Conference on Mobile Systems, Applications and Services (Mobisys), Association for Computing Machinery, Inc., 15 June 2010
- Eric Rozner, Vishnu Navda, Ramachandran Ramjee, and Shravan Rayanchu, NAPman: Network-Assisted Power Management for WiFi Devices, in MobiSys, Association for Computing Machinery, Inc., 15 June 2010
- Bhavish Aggarwal, Aditya Akella, Ashok Anand, Athula Balachandran, Pushkar Chitnis, Chitra Muthukrishnan, Ramachandran Ramjee, and George Varghese, EndRE: An End-System Redundancy Elimination Service for Enterprises, in Symposium on Networked Systems Design and Implementation (NSDI), USENIX, April 2010
- P. Agrawal, A. Kumar, J. Kuri, M. K. Panda, V. Navda, R. Ramjee, and V. Padmanabhan, Analytical Models for Energy Consumption in Infrastructure WLAN STAs Carrying TCP Traffic, in International Conference on Communication Systems and Networks (COMSNETS), Best Paper Award, IEEE, January 2010
- Ashish Sharma, Vishnu Navda, Ramachandran Ramjee, Venkat Padmanabhan, and Elizabeth Belding, Cool-Tether: Energy Efficient On-the-fly WiFi Hot-spots using Mobile Phones, in International Conference on emerging Networking EXperiments and Technologies (CoNEXT), Association for Computing Machinery, Inc., December 2009
- Ranveer Chandra, Sandeep Karanth, Thomas Moscibroda, Vishnu Navda, Jitu Padhye, Ramachandran Ramjee, and Lenin Ravindrananth, DirCast: A Practical and Efficient Wi-Fi Multicast System, in International Conference on Network Protocols (ICNP), IEEE, October 2009
- Ashok Anand, Chitra Muthukrishnan, Aditya Akella, and Ramachandran Ramjee, Redundancy in Network Traffic: Findings and Implications, in Proceedings of ACM SIGMETRICS/Performance, Association for Computing Machinery, Inc., June 2009
- Li Erran Li, Richard Alimi, Ramachandran Ramjee, Harish Viswanathan, and Yang Richard Yang, muNet: Harnessing Multiuser Capacity in Wireless Mesh Networks, in Proceedings of IEEE Infocom Mini Symposium, IEEE, April 2009
- Prashanth Mohan, Venkat Padmanabhan, and Ramachandran Ramjee, Nericell: Rich Monitoring of Road and Traffic Conditions using Mobile Smartphones, in ACM Sensys, Association for Computing Machinery, Inc., November 2008
- Prashanth Mohan, Venkata N. Padmanabhan, and Ramachandran Ramjee, TrafficSense: Rich Monitoring of Road and Traffic Conditions using Mobile Smartphones, no. MSR-TR-2008-59, April 2008
- R. Alimi, L. E. Li, Ramachandran Ramjee, H. Viswanathan, and Y. R. Yang, iPack: in-Network Packet Mixing for High Throughput Wireless Mesh Networks, in IEEE Infocom, IEEE Communications Society, April 2008
- L. E. Li, R. Alimi, Ramachandran Ramjee, J. Shi, Y. Sun, H. Viswanathan, and Y. R. Yang, Superposition Coding for Wireless Mesh Networks, in Extended Abstract (4 pages) in ACM Mobicom, Association for Computing Machinery, Inc., September 2007
- L. E. Li, Ramachandran Ramjee, M. Buddhikot, and S. Miller, Network Coding-Based Broadcast in Mobile Ad hoc Networks, in IEEE Infocom, Anchorage, AK, USA, IEEE Communications Society, May 2007
Recent Talks
- Keynote talk titled "Going beyond Gigabit WiFi" at WASA 2012.
- Invited talk titled "Nericell: Rich Monitoring of Road and Traffic Conditions using Mobile Smartphones" at Kaist Computer Science Colloquium, Korea, March 2009 (earlier versions of this talk given at MIT, UMASS, IIT Chennai and WIZARD'2009)
- Keynote talk titled "Context-Aware Mobile Information Access" at Infovision 2009 conference.
Press Coverage
- Cellphones team up to make Wi-Fi where you want it (New Scientist, 1 Dec 2009)
- Cool-Tether Links Phones' Bandwidth To Make High-Speed Hotspots (SlashDot, 1 Dec 2009)
- Microsoft Technology Reduces Network Redundancy (PC World, 23 Nov 2009)
- Inside Microsoft Research: The Cutting Edge on Display (PC World, 04 Mar 2008)
- TechFest takes a worldview (Seattle Post-Intelligencer, 05 Mar 2008)
Professional Activities
I co-organized the First Mysore Park Workshop on Building and Programming the Cloud (January 2010, Infosys Campus, Mysore, India) with Sriram Rajamani.
I served as the Program Co-chair of ACM MOBICOM 2006 and IEEE ICNP 2004. Recent service on conference program committees include:
- ACM SIGCOMM 2010 (TPC member)
- IEEE INFOCOM 2010 (TPC Area Chair)
- ACM MOBICOM 2009 (TPC member)
- IEEE INFOCOM 2009 (TPC member)
- ACM SENSYS 2008 (TPC member)
- IEEE ICNP 2008 (TPC member)
- ACM MOBICOM 2008 (TPC member)
- IEEE INFOCOM 2008 (TPC Area Chair)
Teaching
I taught two graduate courses "Wireless and Mobile Networking I & II" (Spring'03 and Fall'03) in the Electrical Engineering Department at Columbia University, New York.
Education
- Ph.D. Computer Science, University of Massachusetts, Amherst, 1997
Title: Supporting Connection Mobility in Wireless Networks
Advisors: Prof. Jim Kurose and Prof. Don Towsley. - M.S., Computer Science, University of Massachusetts, Amherst, 1994
Title: Adaptive Playout Mechanisms for Packetized Audio Applications in Wide-Area Networks
Advisors: Prof. Jim Kurose and Prof. Don Towsley. - B.Tech., Computer Science and Engineering, Indian Institute of Technology, Madras, 1992.
