AT&T Labs - Research
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AT&T Labs Research - Vinay A. Vaishampayan's Personal Page
Your Photo Here Vinay A. Vaishampayan
Distinguished Member of Technical Staff
AT&T Labs - Research, Shannon Laboratory.
180 Park Avenue, Florham Park, NJ 07932
e-mail: vinay at research dot att dot com
tel: (973) 360-8434

Under Review

  1. N. J. A. Sloane, V. A. Vaishampayan and S. I. R. Costa, ``A note on Projecting the Cubic Lattice'', submitted.

Journal Publications

  1. L. Venturino, V. A. Vaishampayan, M. D. Feuer and X. Wang, ``Effect of Chip-Level Asynchronism on a CDMA-based Overlay System for Optical Network Management,'' to appear, IEEE J. Selected Areas Commun., (Special issue on Next Generation Broadband Optical Access Network Technologfies), 2010.
  2. N.J.A. Sloane and V. Vaishampayan, ``Generalizations of Schobi's Tetrahedral Dissection,'' Discrete and Computational Geometry, March 2009.
  3. C. Tian, V. A. Vaishampayan, N. J. A. Sloane, ``Constant Weight Codes: An Approach Based on Dissections,'' IEEE Transactions on Information Theory, March 2009.
  4. M. D. Feuer, C. Hruska, H. Wang, L. H. Spiekman, B. B. Stefanov, V. A. Vaishampayan, ``Simultaneous Data Regeneration and Digital Lightlabel Swapping in an SOA-MZI Device,'' IEEE Photonics Technology Letters, pp. 1491-1493, vol. 20, No. 17, Sept. 2008.
  5. S. Kanumuri, P. C. Cosman, A. R. Reibman and V. A. Vaishampayan,``Modeling packet-loss visibility in MPEG-2 video,'' IEEE Transactions on Multimedia, vol. 8, pp. 341-355, April 2006.
  6. I. Daubechies, R. DeVore, C. S. Gunturk and V. A. Vaishampayan, ``Exponential Precision in A/D Conversion with an Imperfect Quantizer,'' IEEE Trans. Inform. Theory, pp. 874-885, vol. 52, March 2006.
  7. M. D. Feuer and V. A. Vaishampayan, ``Rejection of Inter-Label Crosstalk in a Digital Lightpath Labeling System with Low-Cost, All-Wavelength Receivers,'' IEEE/OSA Journal of Lightwave Technology, vol.24, pp. 1121-1128, March 2006.
  8. V. A. Vaishampayan and M. D. Feuer, ``An Overlay Architecture for Managing Lightpaths in Optically Routed Networks,'' IEEE Transactions on Communications, vol. 53, No. 10, pp. 1729--1737, Oct. 2005.
  9. A. R. Reibman, V. A. Vaishampayan and Y. Sermadevi, ''Quality Monitoring of Video over a Packet Network,'' IEEE Transactions on Multimedia, vol. 6, No. 2, pp. 327-334, April 2004.
  10. V. A. Vaishampayan and S. I. R. Costa, ``Curves on a Sphere, Shift Map Dynamics and Error Control for Continuous Alphabet Sources,'' IEEE Transactions on Information Theory, vol. 49, No. 7, pp. 1658--1672, July 2003.
  11. N. J. A.. Sloane and V. A. Vaishampayan, ``A Zador-like Formula for Quantizers Based on Periodic Tilings,'' IEEE Transactions on Information Theory, vol. 48, No. 12, pp. 3138-3140, Dec. 2002.
  12. S. Diggavi, N. J. A. Sloane and V. A. Vaishampayan, ``Asymmetric Multiple Description Lattice Vector Quantizers,'' IEEE Transactions on Information Theory, vol. 48, No. 1, pp. 174--191, Jan. 2002.
  13. V. A. Vaishampayan, N. J. A. Sloane and S. D. Servetto, ``Multiple Description Vector Quantization with Lattice Codebooks: Design and Analysis,'' IEEE Transactions on Information Theory, vol. 47, No. 5, pp. 1718-1735, July 2001.
  14. C. S. Gunturk, J. C. Lagarias and V. A. Vaishampayan, ``On the robustness of single-loop sigma-delta modulation,'' IEEE Transactions on Information Theory, vol. 47, No. 5, pp. 1735-1744, July 2001.
  15. Y. Wang, M. Orchard, V. A. Vaishampayan and Amy Reibman, ``Multiple Description Coding using Pairwise Correlating Transforms,'' IEEE Transactions on Image Processing, vol. 10, No. 3, pp. 351-366, March 2001.
  16. R. Balan, I. Daubechies and V. A. Vaishampayan, ``The analysis and design of windowed Fourier frame based multiple description source coding schemes,'' IEEE Transactions on Information Theory, vol. 46, No. 7, pp. 2491 -2536, Nov. 2000.
  17. S. D. Servetto, K. Ramachandran, V. A. Vaishampayan and K. Nahrstedt, ``Multiple Description Wavelet Based Image Coding,'', IEEE Trans. Image Processing, vol. 9, pp. 813-826, May 2000.
  18. V. Vaishampayan and J.-C. Batllo, ``Asymptotic Analysis of Multiple Description Quantizers,'' IEEE Transactions on Information Theory, vol. 44, No. 1, pp. 278-284, Jan. 1998.
  19. J.-C. Batllo and V. Vaishampayan, ``Asymptotic Performance of Multiple Description Transform Codes,'' IEEE Transactions on Information Theory, vol. 43, No. 2, pp. 703-707, March 1997.
  20. S. M. Yang and V. Vaishampayan, ``Low-Delay Communication for Rayleigh Fading Channels: An Application of the Multiple Description Quantizer,'' IEEE Transactions on Communications, vol. 43, No. 11, pp. 2771-2783, Nov. 1995.
  21. A. Ingle and V. Vaishampayan, ``DPCM System Design for Diversity Systems with Applications to Packetized Speech,'' IEEE Transactions on Speech and Audio Processing, vol. 3, No. 1, pp. 48--58, January 1995.
  22. V. Vaishampayan and J. Domaszewicz, ``Design of Entropy-Constrained Multiple Description Scalar Quantizers,'' IEEE Transactions on Information Theory, vol. 40, pp. 245--250, Jan. 1994.
  23. V. Vaishampayan, ``Design of Multiple Description Scalar Quantizers,'' IEEE Transactions on Information Theory, vol. 39, pp. 821--834, May 1993.
  24. V. Vaishampayan and N. Farvardin, ``Joint Design of Block Source Codes and Modulation Signal Sets,'' IEEE Transactions on Information Theory, vol. 38, pp. 1230--1249, July 1992.
  25. N. Farvardin and V. Vaishampayan, ``On the Performance and Complexity of Channel-Optimized Vector Quantizers,'' IEEE Transactions on Information Theory, vol. 37, pp. 155-159, January 1991.
  26. V. Vaishampayan and N. Farvardin, `` Optimal Block Cosine Transform Image Coding for Noisy Channels,'' IEEE Transactions on Communication, vol. 38, pp. 327-336, March 1990.
  27. N. Farvardin and V. Vaishampayan, ``Optimal Quantizer Design for Noisy Channels: An Approach to Combined Source-Channel Coding,'' IEEE Transactions on Information Theory, vol IT-33, pp. 827-838, November 1987.

Conference Proceedings and Presentations

  1. M. D. Feuer and V. A. Vaishampayan, ``Clip-on Fiber Identifier using Digital Lightpath Labels,'' 2009 Communications and Photonics Conference and Exhibition, Nov. 2009.
  2. N. J. A. Sloane, V. A. Vaishampayan and S. I. R. Costa, ``Fat Struts: Constructions and a Bound,'' Proc. 2009 IEEE Information Theory Workshop, pp. 333-337, Taormina, Italy, Oct. 2009.
  3. C. Torezzan, S. I. R. Costa and V. A. Vaishampayan, ``Spherical Codes on Torus Layers,'' Proc. 2009 IEEE International Symposium on Information Theory, pp. 2033-2037, July 2009.
  4. M. D. Feuer, C. Hruska, H. Wang, L. H. Spiekman, B. B. Stefanov, V. A. Vaishampayan, All Optical Swapping of Digital Lightpath Labels, Proceedings of the Optical Fiber Conference (OFC), Feb 24--28, 2008.
  5. Vinay A. Vaishampayan and N. J. A. Sloane, ``Dissections and Constant Weight Codes,'' Proceedings, Information Theory Workshop, Chengdu, China, Oct. 22-26, 2006.
  6. Mark D. Feuer, Vinay A. Vaishampayan, ``LightLabel: a Management Tool for Photonic Networks,'' Proceedings of Lasers and Electro-Optics Society, Sydney, Australia, 2005.
  7. Chao Tian, V. A. Vaishampayan, N. J. A. Sloane, ``Constant Weight Codes: A Geometric Approach,'' Proceedings, IEEE International Symposium on Information Theory, Adelaide, Australia, 2005.
  8. Vinay A. Vaishampayan, Mark D. Feuer, ``Effect of Chip-Level Asynchronism on an Overlay System for Optical Networks,'' Proceedings, International Symposium on Communication Theory and its Applications (ISCTA 2005), Ambleside, UK, 2005.
  9. Mark D. Feuer, Vinay A. Vaishampayan, ``Demonstration of an in-band auxiliary channel for path trace in photonic networks,'' Technical Digest of OFC2005, Anaheim, CA USA, 2005.
  10. S. N. Diggavi, Vinay A. Vaishampayan, ``On Multiple Description Source Coding with Decoder Side Information,'' Proceedings of the 2005 IEEE Information Theory Workshop, San Antonio, TX, Oct. 24-29, 2004, 2004.
  11. M.D. Feuer, V.A. Vaishampayan, ``In-Band Management Channel for Lightpaths in Photonic Networks,'' European Conference on Optical Communications - ECOC2004, paper Tu3.6.3, 2004
  12. A. R. Reibman and V. A. Vaishampayan, ``Low Complexity Quality Monitoring of MPEG-2 Video in a Network,'' to appear, Proceeesings Intl. Conf. Image Proc., Barcelona, Spain, Sept. 2003.
  13. A. R. Reibman and V. A. Vaishampayan, ``Quality Monitoring for Compressed Video Subjected to Packet Loss,'' 2003 IEEE Intl. Conf. Multimedia and Expo, Baltimore, MD, July 2003.
  14. V. A. Vaishampayan, N. J. A. Sloane and S. I. R. Costa, ``Dynamical Systems, Curves and Error Control for Continuous Alphabet Sources,'' {\bf invited presentation} in session: Advances in Spherical Designs and Codes II, Joint Mathematics Meeting, Baltimore, MD, Jan, 2003.
  15. V. A. Vaishampayan, N. J. A. Sloane and S. I. R. Costa, ``Dynamical Systems, Curves and Coding for Continuous Alphabet Sources,'' {\bf invited paper}, Proceedings of the 2002 IEEE Information Theory Workshop, Oct. 20-25, 2002, Bangalore, India.
  16. V. A. Vaishampayan and S. I. R. Costa, ``Curves on a Sphere: Error Control for Continuous Alphabet Sources,'' in Proceedings of IEEE Intl. Symposium in Information Theory, Lausanne, Switzerland, July 2002.
  17. I. Daubechies, R. DeVore, C. S. Gunturk and V. A. Vaishampayan, ``Beta-Expansions: A New Approach to Digitally Corrected A/D Conversion,'' Proc. 2002 IEEE Intl. Conf. Circuits and Systems, pp. 784-787, May 2002.
  18. V. A. Vaishampayan and N. J. A. Sloane, ``Asymptotic Performance of Multiple Description Vector Quantizers, '' in Proceedings of IEEE Intl. Symposium on Information Theory, Sorrento, Italy, July 2000.
  19. H. Yao and V. A. Vaishampayan, ``A Viterbi based decoding algorithm for multiple description variable length codes,'' in Proceedings, 2000 IEEE International Conference on Acoustics, Speech, and Signal Processing, volume 5, pp. 2573 -2576, April 2000.
  20. S. N. Diggavi, N. J. A. Sloane and V. A. Vaishampayan, ``Design of Asymmetric Multiple Description Vector Quantizers,'' in Proceedings of the 2000 Data Compression Conference, Snowbird Utah, March 2000.
  21. V. Vaishampayan and S. John, ``Balanced Interframe Multiple Description Video Compression,'' Proceedings of the 1999 Intl. Conference on Image Processing, Kobe, Japan, 24--28 Oct. 1999.
  22. S. D. Servetto, V. Vaishampayan and N. J. A. Sloane, `` Multiple Description Lattice Vector Quantization,'' in Proceedings of the 1999 Data Compression Conference, Snowbird, Utah, March 1999.
  23. S. Servetto, K. Ramchandran, V. Vaishampayan and K. Nahrstedt, ``Multiple Description Wavelet Based Image Coding,'' Proceedings of the 1998 Intl. Conference on Image Processing, Chicago, IL, Oct. 4--7, 1998.
  24. V. Vaishampayan, ``High Quality A/D Conversion Using Single-Bit Quantizers: A Novel Approach based on Generalized Frequency Modulation,'' Proceedings of the International Symposium on Signals, Systems, and Electronics, Pisa, Italy, Sept. 30--Oct. 2, 1998.
  25. V. Vaishampayan, J.-C. Batllo and A. R. Calderbank, ``On Reducing Granular Distortion in Multiple Description Quantization,'' Proceedings of the 1998 IEEE International Symposium on Information Theory, Cambridge, MA, August 16--20, 1998.
  26. M. Orchard, Y. Wang, V. Vaishampayan and A. Reibman, ``Redundancy Rate-Distortion Analysis of Multiple Description Coding Using Pairwise Correlating Transforms,'' Proceedings of the 1997 IEEE Intl. Conference on Image Processing, Santa Barbara, Nov. 1997.
  27. J.-C. Batllo and V. Vaishampayan, ``Multiple Description Source Encoding of a Gaussian Random Variable---A Geometric Approach,'' Proceedings of the 1997 IEEE International Symposium on Information Theory, Ulm, Germany, June 29--July 4, 1997.
  28. V. Vaishampayan, ``Near-Lossless Transform/Wavelet Compression or Transient DPCM,'' Proceedings of the 1996 Intl. Conference on Image Processing, Lausanne, Switzerland, Sept. 16--19, 1996.
  29. V. Vaishampayan, ``Application of Multiple Description Codes to Image and Video Transmission over Lossy Networks,'' Proceedings of the 7th Intl. Workshop on Packet Video, pp. 55-60, Brisbane, Australia, 18--19 March 1996.
  30. V. Vaishampayan and A. A. Siddiqui, ``Speech Predictor Design for Diversity Communication Systems,'' Proceedings of the 1995 IEEE Workshop on Speech Coding for Telecommunications, pp. 69-70, Annapolis, MD, Sept. 20--22, 1995.
  31. J. Domaszewicz and V. Vaishampayan, ``Graph-theoretical analysis of the fractal transform,'' Proceedings of the IEEE International Conference on Acoustics, Speech, Signal Processing, Detroit, Michigan, May 8--12, 1995.
  32. J. Domaszewicz and V. Vaishampayan, ``Iterative collage coding for fractal compression,'' Proceedings of the First IEEE International Conference on Image Processing, Austin, TX, November 13--16, 1994.
  33. J.-C. Batllo and V. Vaishampayan, ``Multiple Description Transform Codes with an Application to Packetized Speech,'' Proceedings of 1994 IEEE International Symposium on Information Theory, Trondheim, Norway, June 27--July 1 1994.
  34. L. Buzi, V. Vaishampayan and R. Laroia, ``Design and Asymptotic Performance of a Structured Multiple description Vector Quantizer,'' Proceedings of 1994 IEEE International Symposium on Information Theory, Trondheim, Norway, June 27--July 1 1994.
  35. J. Domaszewicz and V. Vaishampayan, ``Structural limitations of self-affine and partially self-affine fractal compression.'' Proceedings of SPIE's 1993 Visual Communications and Image Processing Conference, 8--11 November, Cambridge, MA.
  36. E. Ramirez and V. Vaishampayan, ``Sub-band Coding of Images with Quadtree Guided Recursive Polynomial Decomposition.'' Proceeedings of the 1993 International Conference on Acoustics, Speech and signal Processing, April 27--30, Minneapolis, Minnesota.
  37. J. Domaszewicz and V. Vaishampayan, `` Design of Entropy-Constrained Multiple-Description Scalar Quantizers.'' Proceedings of the 1993 IEEE International Symposium on Information Theory, San Antonio, TX, January 17--22, 1993.
  38. Shih-Ming Yang and V. Vaishampayan, `` Diversity Systems for Rayleigh Fading Channels: An Application of Multiple Description Source Codes.'' Proceedings of the 1993 IEEE International Symposium on Information Theory, San Antonio, TX, January 17--22, 1993.
  39. V. Vaishampayan, ``Multiple Description Scalar Quantizer Design: Good Index Assignments.'' Presented at the Joint DIMACS/IEEE Workshop on Coding and Quantization, Rutgers University, Piscataway, NJ October 19--21, 1992.
  40. V. Vaishampayan, ``Vector Quantizer Design for Diversity Systems,'' Proceedings of the 1991 Conference on Information Sciences and Systems, Johns Hopkins University, Baltimore, MD, March 20--22, 1991.
  41. V. Vaishampayan and N. Farvardin, ``On Optimum Encoder and Decoder Mappings for Vector Sources and Bandlimited Waveform Channels,''Proceedings of the 1990 Conference on Information Sciences and Systems, Princeton, N.J., March 21-23, 1990.
  42. V. Vaishampayan and N. Farvardin, ``Combined Source-Channel Coding for Bandlimited Waveform Channels,'' Abstracts of Papers, 1990 IEEE International Symposium on Information Theory, San Diego, CA, Jan 14-19, 1990.
  43. N. Farvardin and V. Vaishampayan, ``Some Issues on Vector Quantization for Noisy Channels,'' Abstracts of Papers, 1988 IEEE International Symposium on Information Theory, Kobe, Japan, page 163, June 19-24, 1988.
  44. V. Vaishampayan and N. Farvardin, ``Joint Design of Block Source Coders and Modulation Signal Sets,'' Proceedings of the 1988 Conference on Information Sciences and Systems, Princeton, N.J., pp. 373-379, March 16--18, 1988.
  45. N. Farvardin and V. Vaishampayan, ``Optimal Quantizer Design for Noisy Channels: An Approach to Combined Source-Channel Coding,'' Abstracts of Papers, 1986 IEEE International Symposium on Information Theory, Ann Arbor, Michigan, page 9, October 6-9, 1986.
  46. V. Vaishampayan and N. Farvardin, `` Optimal Block Cosine Transform Image Coding for Noisy Channels,'' Proceedings of the 1986 Conference on Information Sciences and Systems, Princeton, N.J., pp. 260-266, March 1986.

Patents Issued

  1. ``Method And Apparatus For Converting An Analog Signal To A Digital Signal,'' United States Patent Number 6160505, 12/12/2000.
  2. ``Predictive Balanced Multiple Description Coder For Data Compression,'' United States Patent Number 6665646, granted 12/16/2003.
  3. ``Multiple Description Lattice Vector Quantization,'' United States Patent Number 6516297, granted 02/04/2003.
  4. `Digital Encoding of Labels for Optical Packet Networks,'' United States Patent Number 7512342, March 31, 2009.
  5. ``Method and Apparatus of Managing Lightpaths in Optically-Routed Networks,'' United States Patent Number 7580632, Aug. 25, 2009.
  6. ``Geometric Approach For Constructing Codes Of Constant Weight,'' United States Patent Number 7587641, Sept. 8, 2009.
  7. ``Methods And Systems For Transferring Data Over Electronic NetworksÓ, US Patent Number 7627549, Dec. 1, 2009.