Ph.D.
Department of Electrical Engineering,
Stanford University

Advisor: Prof. John M. Cioffi

Contact Information

E-mail: jsumanth AT gmail DOT com

Research Interests

• Communication Theory
• Multi-user Information Theory
• Multiple Antenna Systems (MIMO)
• DMT and OFDM Systems
• Digital subscriber lines
• Wireless LAN, WiMAX, LTE, etc.
• Home Power-line Communications

Theses

• Ph.D. Dissertation, "Interference and Outage Optimization in Multi-user Multi-carrier Communication Systems," June 2008, Stanford University, California, USA.
  Advisor: Prof. John M. Cioffi
• B.Tech. Project Report, "Studying the Effect of Delay Diversity on a DS-CDMA Downlink," June 2003, Indian Institute of Technology, Madras, India.
  Advisor: Prof. K. Giridhar

Online Articles

• Digital subscriber line (DSL) in Scholarpedia

IEEE Copyright Information

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Journal and Magazine Publications

• S. Jagannathan, V. Pourahmad, K. Seong, J. M. Cioffi, M. Ouzzif, R. Tarafi, "Common-mode Data Transmission using the Binder Sheath in Digital Subscriber Lines," IEEE Trans. Commun., Mar. 2009.
• S. Jagannathan and J. M. Cioffi, "Distributed Adaptive Bit-loading for Spectrum Optimization in Multi-user Multicarrier Systems," Elsevier Physical Communication (2008), vol. 1/1, pp. 40-59, doi:10.1016/j.phycom.2008.01.005.
• S. Jagannathan, C. S. Hwang, J. M. Cioffi, "Margin Optimization in Digital Subscriber Lines - Part I: Level-1 Dynamic Spectrum Management," submitted to IEEE Trans. Commun., Oct. 2007.
• S. Jagannathan, C. S. Hwang, J. M. Cioffi, "Margin Optimization in Digital Subscriber Lines - Part II: Level-2 Dynamic Spectrum Management," accepted in IEEE Trans. Commun.
  
• B. Lee, J. M. Cioffi, S. Jagannathan, K. Seong, Y. Kim, M. Mohseni, M. H. Brady, "Binder MIMO channels," IEEE Trans. Commun., vol.55, no.8, pp.1617-1628, Aug. 2007.
• B. Lee, J. M. Cioffi, S. Jagannathan, M. Mohseni, "Gigabit DSL," IEEE Trans. Commun., vol.55, no.9, pp.1689-1692, Sept. 2007.
• J. M. Cioffi, S. Jagannathan, M. Mohseni, G. Ginis, "CuPON: The Copper Alternative to PON 100 Gb/s DSL Networks,"IEEE Communication Magazine, vol. 45, no. 6, pp.132-139, June 2007. Winner of the 2008 IEEE Communications Society Award for Outstanding Paper on New Communication Topics.
  
• S. Jagannathan and K. Giridhar, "Studying the Effect of Delay Diversity on a DS-CDMA Downlink," Journal of Research, Institution of Electronics and Telecomm Engineers (IETE), India, vol. 51, no. 1, Jan-Feb 2005.

Conference Publications

• A. Chowdhery, S. Jagannathan, J. M. Cioffi, M. Ouzzif, “A Polite Cross-layer Protocol for Contention-based Home Power-line Communications”, IEEE ICC 2009.
• H. Zou, A. Chowdhery, S. Jagannathan, J. M. Cioffi, J. L. Masson, “Multi-user Joint Subchannel and Power Resource-Allocation for Powerline Relay Networks” IEEE ICC 2009.
• J. M. Cioffi, S. Jagannathan, W. Lee, H. Zou, A. Chowdhery, W. Rhee, G. Ginis, P. Silverman, “Greener Copper with Dynamic Spectrum Management,” AccessNets, Las Vegas, NV, USA, Oct. 2008.
• H. Zou, S. Jagannathan, J. M. Cioffi, “Multiuser OFDMA Resource Allocation Algorithms for In-Home Power-Line Communications,” GLOBECOM 2008: 2906-2910.
• J. M. Cioffi, H. Zou, A. Chowdhery, W. Lee, S. Jagannathan, “Greener Copper with Dynamic Spectrum Management,” GLOBECOM 2008: 5697-5701.
• S. Jagannathan, C. S. Hwang, J. M. Cioffi, "Margin Optimization in Digital Subscriber Lines Employing Level-1 Dynamic Spectrum Management," IEEE International Conference on Communications (ICC), Beijing, China, May 2008.
• S. Jagannathan, C. S. Hwang, J. M. Cioffi, "Margin Optimization in Digital Subscriber Lines Employing Level-2 Dynamic Spectrum Management," IEEE International Conference on Communications (ICC), Beijing, China, May 2008. ICC Best Paper Award, Signal Processing for Communications Symposium.
• S. Jagannathan and J. M. Cioffi, "Distributed, Adaptive Bit-loading for Spectrum Optimization in Multi-user Multicarrier Systems," IEEE International Conference on Communications (ICC), Beijing, China, May 2008.
• S. Jagannathan, C. S. Hwang, J. M. Cioffi, "Per-tone Margin Optimization in Multicarrier Communication Systems," IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Las Vegas, NV, U.S.A.,Apr. 2008.
• S. Jagannathan, C. S. Hwang, J. M. Cioffi, "Resource Allocation in Uplink Multi-carrier MIMO systems for Low-complexity Transceivers," Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, U.S.A, Nov. 2007.
• S. Jagannathan and J. M. Cioffi, "Optimality of FDMA in Gaussian Multiple-access Channels with Non-zero SNR Margin and Gap," IEEE Global Communications Conference (Globecom), San Francisco, CA, U.S.A., Dec. 2006.
• J. M. Cioffi et. al., "Vectored DSLs with DSM: The Road to Ubiquitous Gigabit DSLs," World Telecommunications Conference, Budapest, Hungary, May 2006 (Invited paper).
• S. Jagannathan, H. Aghajan, A. Goldsmith, "The effect of time synchronization errors on the performance of cooperative MISO systems," IEEE Global Communications Conference (Globecom) Workshop on Wireless Ad hoc and Sensor Networks, Dallas, TX, U.S.A., Nov. 2004.
• N. Khaled, S. Jagannathan, A. Bahai, F. Petr&eacute, G. Leus, H. De man, "On the impact of multi-antenna RF transceivers' amplitude and phase mismatches on transmit MRC," IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Philadelphia, PA, U.S.A., Mar. 2005.
• K. H. Aparna, S. Jagannathan, P. Krishnan, S. Chakravarthy, "An Optical Character Recognition System for Tamil Newsprint," National Conference on Communications (NCC), IIT Madras, Chennai, India, Feb. 2003.
• S. Jagannathan and J. Sundararajan, "An Application of Microbial Genetic Algorithm for VLSI CAD," IEEE ACE, Science City, Kolkata, India, Dec., 2002.
• R. Sarathi, P. Krishnan, S. Ramanan, S. Jagannathan, C. Venkataseshaiah, ""Diagnostics of Degradation condition in Outdoor Polymeric Insulation Structures Using Neural Networks," IEEE ACE, Science City, Kolkata, India, Dec. 2002.
• K. H. Aparna, S. Jagannathan, P. Krishnan, S. Chakravarthy, "Document Image Analysis: With Specific Application to Tamil Newsprint," International Conference on Universal Knowledge and Language (ICUKL), Goa, India, Nov. 2002.
• S. Jagannathan and J. Sundararajan, "Two Level Boolean Logic Minimization using Microbial Genetic Algorithms,"GECCO 2001, San Francisco, CA, U.S.A., July 2001.

Standards Contributions

• S. Jagannathan, W. Lee, J. Cioffi, G. Ginis, P. Silverman, "An Updated Level 2 Proposal for Annexes A and C for DSM TR Issue 2," ATIS Contribution NIPP-NAI 2008-083, Miami, FL, Apr. 28, 2008.
• J. Cioffi, S. Jagannathan, W. Lee, G. Ginis, P. Silverman, "Green DSL-Power saving from DSM," ATIS Contribution NIPP-NAI 2008-082, Miami, FL, Apr. 28, 2008.
• W. Lee, S. Jagannathan, J. Cioffi, G. Ginis, P. Silverman, "Further examples on Level 2 DSM Power-Saving," ATIS Contribution NIPP-NAI 2008-007, Vancouver, Canada, Jan. 21, 2008.
• J. Cioffi, W. Lee, S. Jagannathan, G. Ginis, P. Silverman, "DSM Level 1: Polite Low-Power Single-DSL Stability," ATIS Contribution NIPP-NAI 2007-158, Vancouver, Canada, Nov. 12, 2007.
• J. Cioffi, W. Lee, S. Jagannathan, G. Ginis, P. Silverman, "DSM Level 2: Polite and Efficient Access-Network Throughput Increase," ATIS Contribution NIPP-NAI 2007-159, Vancouver, Canada, Nov. 12, 2007.
• W. Lee, S. Jagannathan, J. Cioffi, G. Ginis, P. Silverman, "Higher-Rate Level 2 DSM Power-Saving Examples," ATIS Contribution NIPP-NAI 2007-160, Vancouver, Canada, Nov. 12, 2007.
• W. Lee, C. Chen, S. Jagannathan, J. Cioffi, G. Ginis, P. Silverman, "Power and Rate Management for Level 3 DSM Vectored DSLs," ATIS Contribution NIPP-NAI 2007-162, Vancouver, Canada, Nov. 12, 2007.
• J. Cioffi, W. Lee, S. Jagannathan, G. Ginis, "The Inherent Simplicity of Distributed Band Preference," ATIS Contribution NIPP-NAI 2007-129R2, Miami, FL, Sept. 24, 2007.
• S. Jagannathan, C. S. Hwang, J. Cioffi, "Margin Optimization in DSM Levels 1 and 2," ATIS Contribution NIPP-NAI 2007-135R1, Miami, FL, Sept. 24, 2007.
• J. Cioffi, S. Jagannathan, G. Ginis, M. Mohseni, "DSL is Faster than Fiber," ATIS Contribution NIPP-NAI 2007-057, Minneapolis, MN, May 14, 2007.
• S. Jagannathan and J. Cioffi, "DSM Level 2 Band-Preference using Penalty Tables," ATIS Contribution NIPP-NAI 2007-062, Minneapolis, MN, May 14, 2007.
• S. Jagannathan and J. Cioffi, "Supporting contribution for Stanford University's letter ballot comments on Annex G of the DSM TR.," ATIS Contribution NIPP-NAI 2007-002, Nashville, TN, Feb. 12, 2007.
• S. Jagannathan, C. Chen, J. Cioffi, G. Ginis, "Spatial Noise Cancellation using Extra Wire-pairs in the DSL Downstream," ATIS Contribution NIPP-NAI 2006-129, Vancouver, Canada, Oct. 9, 2006.
• M. Brady, P. Silverman, S. Jagannathan, G. Ginis, "Performance of 552 kHz Extended US0 with Level 2 DSM,"ATIS Contribution NIPP-NAI 2006-119, Sept. 7, 2006, conference call.
• S. Jagannathan P. Silverman, G. Ginis, "The need for Margin Cap Mode Lab Test Results," ATIS contribution NIPP-NAI 2006-114, Aug. 30, 2006, conference call.
• J. Cioffi, S. Jagannathan, G. Ginis, M. Brady, "DSM is for Unbundled DSL," ATIS Contribution NIPP-NAI 2006-087R1, Savannah, GA, June 26, 2006.
• G. Ginis, P. Silverman, S. Jagannathan, "Explanation of band preference (PREFBAND)," ATIS Contribution NIPP-NAI 2006-090R1, Savannah, GA, June 26, 2006.
• G. Ginis, P. Silverman, S. Jagannathan, "Equivalence between Tone-Dependent Target SNR Margin and Virtual Noise," ATIS Contribution NIPP-NAI 2006-091R1, Savannah, GA, June 26, 2006.
• J. Cioffi, S. Jagannathan, G. Ginis, M. Brady, "DSM Upstream Data Rate Revival: the Restoration of Symmetry,"ATIS Contribution NIPP-NAI 2006-092, Savannah, GA, June 26, 2006.
• J. Cioffi, S. Jagannathan, V. Pourahmad, G. Ginis, B. Lee, "Full Binder Level 3 DSM Capacity and Vectored DSL Reinforcement," ATIS Contribution NIPP-NAI 2006-041, Las Vegas, NV, March 20, 2006.