# Faculty Publications - Kannan Ramchandran

## Book chapters or sections

- A. G. Dimakis and K. Ramchandran, "Network coding for distributed storage in wireless networks," in
*Networked Sensing Information and Control*, V. Saligrama, Ed., New York, NY: Springer Science+Business Media, LLC, 2008, pp. 115-134. - A. G. Dimakis and K. Ramchandran, "Networked coding for distributed storage in wireless networks," in
*Networked Sensing Information and Control*, V. Saligrama, Ed., New York, NY: Springer Science+Business Media, LLC, 2008, pp. 115-134. - C. Yeo, P. Ahammad, and K. Ramchandran, "A rate-efficient approach for establishing visual correspondences via distributed source coding (Invited Paper)," in
*Visual Communications and Image Processing 2008*, W. A. Pearlman, J. W. Woods, and L. Lu, Eds., Proceedings Electronic Imaging Science and Techology, Vol. 6822, Bellingham, WA/Springfield, VA: SPIE/IS&T, 2008, pp. 68221R-1-9. - C. Yeo and K. Ramchandran, "Robust distributed multi-view video compression for wireless camera networks (Best Student Paper Award)," in
*Visual Communications and Image Processing 2007*, C. W. Chen, D. Schonfeld, and J. Luo, Eds., Proceedings of Electronic Imaging Science and Technology, Vol. 6508, Bellingham, WA/Springfield, VA: SPIE/IS&T, 2007, pp. 65080P-1-9. - M. Johnson, D. Wagner, and K. Ramchandran, "On compressing encrypted data without the encryption key," in
*Theory of Cryptography: Proc. 1st Theory of Cryptograpy Conf. (TSS 2004)*, M. Naor, Ed., Lecture Notes in Computer Science, Vol. 2951, Berlin, Germany: Springer-Verlag, 2004, pp. 491-504.

## Articles in journals or magazines

- N. B. Shah, S. Balakrishnan, J. Bradley, A. Parekh, K. Ramchandran, and M. Wainwright, "Estimation from Pairwise Comparisons: Sharp Minimax Bounds with Topology Dependence,"
*AISTATS, San Diego, May 2015*, 2015. - V. N. Ekambaram, G. C. Fanti, B. Ayazifar, and K. Ramchandran, "Spline-Like Wavelet Filterbanks for Multiresolution Analysis of Graph-Structured Data,"
*Signal and Information Processing Over Networks, IEEE Transactions on*, vol. 1, no. 4, pp. 268-278, Dec. 2015. - X. Pan, D. Papailiopoulos, S. Omyak, B. Recht, K. Ramchandran, and M. Jordan, "Parallel correlation clustering on big graphs,"
*Advances in Neural Information Processing Systems 28*, Dec. 2015. [abstract] - L. Tian, X. Li, K. Ramchandran, and L. Waller, "Multiplexed coded illumination for Fourier Ptychography with an LED array microscope,"
*Biomed. Opt. Express*, vol. 5, no. 7, pp. 2376--2389, July 2014. [abstract] - V. Ekambaram and K. Ramchandran, "citeKey, {Distributed High Accuracy Peer-to-Peer Localization in Mobile Multipath Environments},"
*Arxiv preprint arXiv:1011.6075*, Dec. 2010. [abstract] - H. Zhang, C. Yeo, and K. Ramchandran, "{VSYNC --- A Novel Video File Synchronization Protocol},"
*to appear in Proc. ACM International Conference on Multimedia (ACM MM)*, 2008. - C. Yeo, P. Ahammad, K. Ramchandran, and S. S. Sastry, "High-speed action recognition and localization in compressed domain videos,"
*IEEE Trans. Circuits and Systems for Video Technology*, vol. 18, no. 8, pp. 1006-1015, Aug. 2008. - V. M. Prabhakaran, R. Puri, and K. Ramchandran, "Colored Gaussian source-channel broadcast for heterogeneous (analog/digital) receivers,"
*IEEE Trans. Information Theory*, vol. 54, no. 4, pp. 1807-1814, April 2008. - A. K. Fletcher, S. Rangan, V. K. Goyal, and K. Ramchandran, "Robust predictive quantization: Analysis and design via convex optimization,"
*IEEE J. Selected Topics in Signal Processing*, vol. 1, no. 4, pp. 618-632, Dec. 2007. - S. S. Pradhan, S. Choi, and K. Ramchandran, "A graph-based framework for transmission of correlated sources over multiple-access channels,"
*IEEE Trans. Information Theory*, vol. 53, no. 12, pp. 4583-4604, Dec. 2007. - R. Puri, A. Majumdar, and K. Ramchandran, "PRISM: A video coding paradigm with motion estimation at the decoder,"
*IEEE Trans. Image Processing*, vol. 16, no. 10, pp. 2436-2448, Oct. 2007. - A. K. Fletcher, S. Rangan, V. K. Goyal, and K. Ramchandran, "Denoising by sparse approximation: Error bounds based on rate-distortion theory,"
*EURASIP Journal on Applied Signal Processing*, vol. 2006, no. 26318, pp. 19 pg, 2006. - M. Tagliasacchi, A. Majumdar, K. Ramchandran, and S. Tubaro, "Robust wireless video multicast based on a distributed source coding approach,"
*Signal Processing*, vol. 86, no. 11, pp. 3196-3211, Nov. 2006. - S. S. Pradhan and K. Ramchandran, "On functional duality in multiuser source and channel coding problems with one-sided collaboration,"
*IEEE Trans. Information Theory*, vol. 52, no. 7, pp. 2986-3002, July 2006. - R. Puri, A. Majumdar, P. Ishwar, and K. Ramchandran, "Distributed video coding in wireless sensor networks,"
*IEEE Signal Processing Magazine*, vol. 23, no. 4, pp. 94-106, July 2006. - A. G. Dimakis, V. Prabhakaran, and K. Ramchandran, "Decentralized erasure codes for distributed networked storage,"
*IEEE Trans. Information Theory*, vol. 52, no. 6, pp. 2809-2816, June 2006. - D. Petrovic, K. Ramchandran, and J. M. Rabaey, "Overcoming untuned radios in wireless networks with network coding,"
*IEEE Trans. Information Theory*, vol. 52, no. 6, pp. 2649-2657, June 2006. - M. Johnson, P. Ishwar, V. Prabhakaran, D. Schonberg, and K. Ramchandran, "On compressing encrypted data,"
*IEEE Trans. Signal Processing*, vol. 52, no. 10, Pt. 2, pp. 2992-3006, Oct. 2004. - R. Jornsten, W. Wang, B. Yu, and K. Ramchandran, "Microarray image compression: SLOCO and the effect of information loss,"
*Signal Processing: Special Issue on Genomic Signal Processing*, vol. 83, no. 4, pp. 859-869, April 2003. - S. S. Pradhan and K. Ramchandran, "Distributed source coding using syndromes (DISCUS): Design and construction,"
*IEEE Trans. Information Theory*, vol. 49, no. 3, pp. 626-643, March 2003. - S. S. Pradhan, J. Kusuma, and K. Ramchandran, "Distributed compression in a dense microsensor network,"
*IEEE Signal Processing Magazine*, vol. 19, no. 2, pp. 51-60, March 2002. - R. Puri, K. Lee, and K. Ramchandran, "An integrated source transcoding and congestion control paradigm for video streaming in the Internet,"
*IEEE Trans. Multimedia*, vol. 3, no. 1, pp. 18-32, March 2001. - S. D. Servetto, K. Ramchandran, V. A. Vaishampayan, and K. Nahrstedt, "Multiple description wavelet based image coding,"
*IEEE Trans. Image Processing*, vol. 9, no. 5, pp. 813-826, May 2000. - Z. Xiong, K. Ramchandran, M. T. Orchard, and Y. Zhang, "A comparative study of DCT- and wavelet-based image coding,"
*IEEE Trans. Circuits and Systems for Video Technology*, vol. 9, no. 5, pp. 692-695, Aug. 1999. - Z. Xiong, K. Ramchandran, and M. T. Orchard, "Space-frequency quantization for wavelet image coding,"
*IEEE Trans. Image Processing*, vol. 6, no. 5, pp. 677-693, May 1997. - K. Ramchandran and M. Vetterli, "Best wavelet packet bases in a rate-distortion sense,"
*IEEE Trans. Image Processing*, vol. 2, no. 2, pp. 160-175, April 1993.

## Articles in conference proceedings

- N. Shah, S. Balakrishnan, B. Joseph, A. Parekh, K. Ramchandran, and M. Wainwright, "Estimation from Pairwise Comparisons: Sharp Minimax Bounds with Topology Dependence," in
*AISTATS, San Diego, May 2015*, 2015. - N. B. Shah, J. K. Bradley, A. Parekh, M. Wainwright, and K. Ramchandran, "A case for ordinal peer-evaluation in MOOCs," in
*NIPS Workshop on Data Driven Education*, 2013. - V. N. Ekambaram, G. C. Fanti, B. Ayazifar, and K. Ramchandran, "Critically-sampled perfect-reconstruction spline-wavelet filterbanks for graph signals," in
*Global Conference on Signal and Information Processing (GlobalSIP), 2013 IEEE*, 2013, pp. 475-478. - V. N. Ekambaram, G. C. Fanti, B. Ayazifar, and K. Ramchandran, "Wavelet-regularized graph semi-supervised learning," in
*Global Conference on Signal and Information Processing (GlobalSIP), 2013 IEEE*, 2013, pp. 423-426. - V. N. Ekambaram, G. C. Fanti, B. Ayazifar, and K. Ramchandran, "Circulant structures and graph signal processing," in
*Image Processing (ICIP), 2013 20th IEEE International Conference on*, 2013, pp. 834-838. - V. N. Ekambaram, G. C. Fanti, B. Ayazifar, and K. Ramchandran, "Multiresolution Graph Signal Processing via Circulant Structures," in
*Digital Signal Processing and Signal Processing Education Meeting (DSP/SPE), 2013 IEEE*, 2013, pp. 112-117. - H. Zhang, M. Chen, A. Parekh, and K. Ramchandran, "A distributed multichannel demand-adaptive P2P VoD system with optimized caching and neighbor-selection," in
*SPIE Optical Engineering+ Applications*, 2011, pp. 81350X--81350X. - V. Ekambaram and K. Ramchandran, "Distributed high accuracy peer-to-peer localization in mobile multipath environments," in
*GLOBECOM 2010, 2010 IEEE Global Telecommunications Conference*, 2010, pp. 1--5. - O. Bakr, M. Johnson, R. Mudumbai, and K. Ramchandran, "Multi-antenna interference cancellation techniques for cognitive radio applications," in
*IEEE Wireless Communications and Networking Conference (WCNC)*, 2009. [abstract] - O. Bakr, M. Johnson, B. Wild, and K. Ramchandran, "A multi-antenna framework for spectrum reuse based on primary-secondary cooperation," in
*IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN)*, 2008. [abstract] - O. Bakr, M. Johnson, B. Wild, and K. Ramchandran, "A multi-antenna framework for spectrum reuse based on primary-secondary cooperation," in
*IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN)*, 2008. - M. Johnson, M. Mitzenmacher, and K. Ramchandran, "Distributed beamforming with binary signaling," in
*Proc. 2008 IEEE Intl. Symp. on Information Theory (ISIT 2008)*, Piscataway, NJ: IEEE Press, 2008, pp. 890-894. - V. M. Prabhakaran, K. Eswaran, and K. Ramchandran, "Secrecy via sources and channels -- A secret key-secret message rate tradeoff region," in
*Proc. 2008 IEEE Intl. Symp. on Information Theory (ISIT '08)*, Piscataway, NJ: IEEE Press, 2008, pp. 1010-1014. - W. Wang, M. Wainwright, and K. Ramchandran, "Information-theoretic limits on sparse support recovery: Dense versus sparse measurements," in
*Proc. 2008 IEEE Intl. Symp. on Information Theory (ISIT 2008)*, Piscataway, NJ: IEEE Press, 2008, pp. 2197-2201. - H. Qin, A. Kumar, K. Ramchandran, J. M. Rabaey, and P. Ishwar, "Error-tolerant SRAM design for ultra-low power standby operation," in
*Proc. 9th IEEE Intl. Symp. on Quality Electronic Design (ISQED 2008)*, Los Alamitos, CA: IEEE Computer Society, 2008, pp. 30-34. - A. Kumar, H. Qin, P. Ishwar, J. M. Rabaey, and K. Ramchandran, "Fundamental data retention limits in SRAM standby -- Experimental results," in
*Proc. 9th Intl. Symp. on Quality Electronic Design (ISQED 2008)*, Los Alamitos, CA: IEEE Computer Society, 2008, pp. 92-97. - A. G. Dimakis, J. Wang, and K. Ramchandran, "Unequal growth codes: Intermediate performance and unequal error protection for video streaming," in
*Proc. 9th IEEE Workshop on Multimedia Signal Processing (MMSP 2007)*, Piscataway, NJ: IEEE Press, 2007, pp. 107-110. - P. Ahammad, C. Yeo, K. Ramchandran, and S. S. Sastry, "Unsupervised discovery of action hierarchies in large collections of activity videos," in
*Proc. 9th IEEE Workshop on Multimedia Signal Processing (MMSP 2007)*, Piscataway, NJ: IEEE Press, 2007, pp. 410-413. - C. Yeo, J. Wang, and K. Ramchandran, "View synthesis for robust distributed video compression in wireless camera networks," in
*Proc. 2007 IEEE Intl. Conf. on Image Processing (ICIP '07)*, Vol. 3, Piscataway, NJ: IEEE Press, 2007, pp. 21-24. - V. Prabhakaran and K. Ramchandran, "On secure distributed source coding," in
*Proc. 2007 IEEE Information Theory Workshop (ITW '07)*, Piscataway, NJ: IEEE Press, 2007, pp. 442-447. - Y. Wu, A. Dimakis, and K. Ramchandran, "Deterministic regenerating codes for distributed storage (Invited Paper)," in
*Proc. 45th Annual Allerton Conf. on Communication, Control, and Computing*, C. Hadjicostis and P. Moulin, Eds., Piscataway, NJ: IEEE Press, 2007, pp. 242-249. - V. Prabhakaran and K. Ramchandran, "A separation result for secure communication (Invited Paper)," in
*Proc. 45th Annual Allerton Conf. on Communication, Control, and Computing*, C. Hadjicostis and P. Moulin, Eds., Piscataway, NJ: IEEE Press, 2007, pp. 34-41. - A. G. Dimakis, M. Wainwright, and K. Ramchandran, "Lower bounds on the rate-distortion function of LDGM codes," in
*Proc. 2007 IEEE Information Theory Workshop (ITW '07)*, Piscataway, NJ: IEEE Press, 2007, pp. 650-655. - K. Eswaran, M. Gastpar, and K. Ramchandran, "Bits through ARQs: Spectrum sharing with a primary packet system," in
*Proc. 2007 IEEE Intl. Symp. on Information Theory (ISIT 2007)*, Piscataway, NJ: IEEE Press, 2007, pp. 2171-2175. - V. Prabhakaran, D. Tse, and K. Ramchandran, "Channel coding with strictly causal colored side-information at transmitter," in
*Proc. 2007 IEEE Intl. Symposium on Information Theory (ISIT 2007)*, Piscataway, NJ: IEEE Press, 2007, pp. 371-375. - A. Kumar, H. Qin, P. Ishwar, J. M. Rabaey, and K. Ramchandran, "Fundamental bounds on power reduction during data-retention in standby SRAM," in
*Proc. 2007 IEEE Intl. Symp. on Circuits and Systems (ISCAS 2007)*, Piscataway, NJ: IEEE Press, 2007, pp. 1867-1870. - A. G. Dimakis, P. B. Godfrey, M. Wainwright, and K. Ramchandran, "Network coding for distributed storage systems," in
*Proc. 26th IEEE International Conference on Computer Communications (INFOCOM 2007)*, Piscataway, NJ: IEEE Press, 2007, pp. 2000-2008. - A. Kumar, H. Qin, P. Ishwar, J. M. Rabaey, and K. Ramchandran, "Fundamental redundancy versus power trade-off in standby SRAM," in
*Proc. 2007 IEEE Intl. Conf. on Acoustics, Speech, and Signal Processing (ICASSP '07)*, Vol. 2, Piscataway, NJ: IEEE Press, 2007, pp. 85-88. - W. Wang, M. Garofalakis, and K. Ramchandran, "Distributed sparse random projections for refinable approximation," in
*Intl. Conf. Information Processing in Sensor Networks (IPSN)*, 2007, pp. 331-339. - D. Schonberg, C. Yeo, S. C. Draper, and K. Ramchandran, "On compression of encrypted video," in
*Proc. 2007 Data Compression Conf. (DCC '07)*, J. A. Storer and M. W. Marcellin, Eds., Los Alamitos, CA: IEEE Computer Society, 2007, pp. 173-182. - J. Wang, C. Yeo, V. Prabhakaran, and K. Ramchandran, "On the role of helpers in peer-to-peer file download systems: Design, analysis and simulation," in
*Proc. 6th Intl. Workshop on Peer-to-Peer Systems (IPTPS 2007)*, IPTPS Organziation, 2007, pp. 6 pg. - C. Yeo, P. Ahammad, K. Ramchandran, and S. S. Sastry, "Compressed domain real-time action recognition," in
*Proc. 8th IEEE Workshop on Multimedia Signal Processing (MMSP 2006)*, Piscataway, NJ: IEEE Press, 2006, pp. 33-36. - D. Schonberg, S. Draper, and K. Ramchandran, "On compression of encrypted images," in
*Proc. 2006 IEEE Intl. Conf. on Image Processing (ICIP '06)*, Piscataway, NJ: IEEE Press, 2006, pp. 269-272. - J. Wang, V. Prabhakaran, and K. Ramchandran, "Syndrome-based robust video transmission over networks with bursty losses," in
*Proc. 2006 Intl. Conf. on Image Processing (ICIP 2006)*, Piscataway, NJ: IEEE Press, 2006, pp. 741-744. - R. Mudumbai, B. Wild, U. Madhow, and K. Ramchandran, "Distributed beamforming using 1 bit feedback: From concept to realization (Invited Paper)," in
*Proc. 44th Annual Allerton Conf. on Communication, Control, and Computing*, A. Singer and C. N. Hadjicostis, Eds., Urbana-Champaign, IL: University of Illinois, 2006, pp. 1020-1027. - M. Johnson, L. De Nardis, and K. Ramchandran, "Collaborative content distribution for vehicular ad hoc networks (Invited Paper)," in
*Proc. 44th Annual Allerton Conf. on Communication, Control, and Computing*, A. Singer and C. N. Hadjicostis, Eds., Urbana-Champaign, IL: University of Illinois, 2006, pp. 751-760. - P. Ishwar, V. Prabhakaran, and K. Ramchandran, "On source encoding with side-information under ambiguous state of nature," in
*Proc. 2006 IEEE Intl. Symp. on Information Theory (ISIT 2006)*, Piscataway, NJ: IEEE Press, 2006, pp. 479-483. - A. G. Dimakis, V. Prabhakaran, and K. Ramchandran, "Distributed fountain codes for networked storage," in
*Proc. 2006 IEEE Intl. Conf. on Acoustics, Speech, and Signal Processing (ICASSP '06)*, Vol. 5, Piscataway, NJ: IEEE Press, 2006, pp. 1149-1152. - W. Wang and K. Ramchandran, "Random multiresolution representations for arbitrary sensor network graphs," in
*Proc. 2006 IEEE Intl. Conf. on Acoustics, Speech, and Signal Processing (ICASSP '06)*, Vol. 4, Piscataway, NJ: IEEE Press, 2006, pp. 161-164. - W. Wang and K. Ramchandran, "Random distributed multiresolution representations with significance querying," in
*Proc. 5th Intl. Conf. on Information Processing in Sensor Networks (IPSN 2006)*, New York, NY: The Association for Computing Machinery, Inc., 2006, pp. 102-108. - A. K. Fletcher, S. Rangan, V. K. Goyal, and K. Ramchandran, "Causal and strictly causal estimation for jump linear systems: An LMI analysis," in
*Proc. 40th Annual Conf. on Information Sciences and Systems (CISS 2006)*, Piscataway, NJ: IEEE Press, 2006, pp. 1302-1307. - B. Wild and K. Ramchandran, "Detecting primary receivers for cognitive radio applications," in
*Proc. 2005 1st IEEE Intl. Symp. on New Frontiers in Dynamic Spectrum Access Networks (DySPAN 2005)*, Piscataway, NJ: IEEE Press, 2005, pp. 124-130. - S. Draper, K. Ramchandran, B. Rimoldi, A. Sahai, and D. Tse, "Attaining maximal reliability with minimal feedback via joint channel-code and hash-function design," in
*Proceedings of the Allerton Conference on Control, Communications, and Computation*, 2005, pp. 1156-1166. [abstract] - A. G. Dimakis, V. Prabhakaran, and K. Ramchandran, "Ubiquitous access to distributed data in large-scale sensor networks through decentralized erasure codes (Best Paper Award)," in
*Proc. 4th IEEE/ACM Intl. Symp. on Information Processing in Sensor Networks (IPSN 2005)*, Piscataway, NJ: IEEE Press, 2005, pp. 111-117. - A. Majumdar and K. Ramchandran, "PRISM: An error-resilient video coding paradigm for wireless networks," in
*Proc. 1st Intl. Conf. on Broadband Networks*, Los Alamitos, CA: IEEE Computer Society, 2004, pp. 478-485. - J. van Greunen, D. Petrovic, A. Bonivento, J. M. Rabaey, K. Ramchandran, and A. L. Sangiovanni-Vincentelli, "Adaptive sleep discipline for energy conservation and robustness in dense sensor networks," in
*Proc. 2004 IEEE Intl. Conf. on Communications*, Vol. 6, Piscataway, NJ: IEEE Press, 2004, pp. 3657-3662. - M. Johnson and K. Ramchandran, "Dither-Based Secure Image Hashing Using Distributed Source Coding," in
*Proceedings of the IEEE International Conference on Image Processing (ICIP)*, 2003. [abstract] - R. Jornsten, B. Yu, W. Wang, and K. Ramchandran, "Compression of cDNA and inkjet microarray images," in
*Proc. 2002 Intl. Conf. on Image Processing*, Vol. 3, Piscataway, NJ: IEEE Press, 2002, pp. 961-964. - J. Chou, K. Ramchandran, and A. Ortega, "Next generation techniques for robust and imperceptible audio data hiding," in
*Proc. 2001 IEEE Intl. Conf. on Acoustics, Speech and Signal Processing*, Vol. 3, Piscataway, NJ: IEEE Press, 2001, pp. 1349-1352. - J. Chou, S. Pradhan, and K. Ramchandran, "A robust blind watermarking scheme based on distributed source coding principles," in
*Proc. 8th ACM Intl. Conf. on Multimedia*, New York, NY: ACM Press, 2000, pp. 49-56. - J. Chou, S. S. Pradhan, L. El Ghaoui, and K. Ramchandran, "Watermarking based on duality with distributed source coding and robust optimization principles," in
*Proc. 2000 Intl. Conf. on Image Processing*, Vol. 1, Piscataway, NJ: IEEE Press, 2000, pp. 585-588. - J. C. Chou, S. S. Pradhan, L. El Ghaoui, and K. Ramchandran, "Robust optimization solution to the data hiding problem using distributed source coding principles," in
*Proc. SPIE: Image and Video Communications and Processing 2000*, B. Vasudev, T. R. Hsing, A. G. Tescher, and R. L. Stevenson, Eds., Vol. 3974, Bellingham, WA: SPIE, 2000, pp. 270-279.

## Technical Reports

- V. Ekambaram, G. Fanti, and K. Ramchandran, "Semi-Definite Programming Relaxation for Non-Line-of-Sight Localization," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2012-189, Aug. 2012. [abstract]
- V. Ekambaram and K. Ramchandran, "SLAC-RF: Simultaneous 3D Localization of mobile readers and Calibration of RFID supertags," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2012-188, Aug. 2012. [abstract]
- V. Ekambaram and K. Ramchandran, "Cooperative Non-Line-of-Sight Localization Using Low-rank + Sparse Matrix Decomposition," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2012-82, May 2012. [abstract]
- V. N E, K. Ramchandran, and R. Sengupta, "Scaling Laws for Cooperative Node Localization in Non-Line-of-Sight Wireless Networks," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2011-20, March 2011. [abstract]
- H. Zhang, M. Chen, A. Parekh, and K. Ramchandran, "An Adaptive Multi-channel P2P Video-on-Demand System using Plug-and-Play Helpers," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2010-111, July 2010. [abstract]
- C. Suh and K. Ramchandran, "On the Existence of Optimal Exact-Repair MDS Codes for Distributed Storage," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2010-46, April 2010. [abstract]
- S. Pawar, S. El Rouayheb, and K. Ramchandran, "On Secure Distributed Data Storage Under Repair Dynamics," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2010-18, Feb. 2010. [abstract]
- O. M. Bakr, M. C. Johnson, B. Wild, and K. Ramchandran, "Performance analysis of a multi-antenna framework for spectrum reuse," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2008-101, Aug. 2008. [abstract]
- C. Yeo and K. Ramchandran, "Compressed domain video processing of meetings for activity estimation in dominance classification and slide transition detection," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2008-79, June 2008. [abstract]
- W. Wang, M. Wainwright, and K. Ramchandran, "Information-Theoretic Limits on Sparse Signal Recovery: Dense versus Sparse Measurement Matrices," UC Berkeley, Department of Statistics, Tech. Rep. UCB/STAT-08-754, May 2008.
- A. K. Fletcher, S. Rangan, V. K. Goyal, and K. Ramchandran, "Denoising by Sparse Approximation: Error Bounds Based on Rate-Distortion Theory," EECS Department, University of California, Berkeley, Tech. Rep. UCB/ERL M05/5, Jan. 2005.
- R. Puri and K. Ramchandran, "PRISM: A Video Coding Architecture Based on Distributed Compression Principles," EECS Department, University of California, Berkeley, Tech. Rep. UCB/ERL M03/6, 2003.
- R. Puri and K. Ramchandran, "PRISM: A Realtime Multimedia Coding Architecture for Wireless," EECS Department, University of California, Berkeley, Tech. Rep. UCB/ERL M02/22, 2002.
- S. S. Pradhan, J. Chou, and K. Ramchandran, "Duality between source coding and channel coding with side information," EECS Department, University of California, Berkeley, Tech. Rep. UCB/ERL M01/34, 2001.
- S. S. Pradhan, R. Puri, and K. Ramchandran, "(n,k) Source-Channel Erasure Codes: Can Parity Bits Also Refine Quality?," EECS Department, University of California, Berkeley, Tech. Rep. UCB/ERL M01/3, 2001.
- R. Anand, K. Ramchandran, and S. Shakkottai, "Improvement of TCP Performance Over Heterogenous Networks Using Continuous Error Detection Based Link Level Error Recovery," EECS Department, University of California, Berkeley, Tech. Rep. UCB/ERL M00/56, 2000.
- S. Pradhan and K. Ramchandran, "Multiuser Successive Refinement," EECS Department, University of California, Berkeley, Tech. Rep. UCB/ERL M00/20, 2000.

## Patents

- B. J. Wild, A. Tkachenko, K. Ramchandran, and U. Madhow, "Localizing tagged assets using modulated backscatter," U.S. Patent 9,262,912. Feb. 2016. [abstract]
- B. J. Wild, U. Madhow, and K. Ramchandran, "RFID repeater for range extension in modulated backscatter systems," U.S. Patent 8,988,197. March 2015. [abstract]
- K. Ramchandran, B. J. Wild, A. Tkachenco, and U. Madhow, "Localization using virtual antenna arrays in modulated backscatter RFID systems," U.S. Patent 8,446,253. May 2013. [abstract]
- B. J. Wild, U. Madhow, K. Ramchandran, R. Barton, and A. Tkachenko, "Applique nodes for performance and functionality enhancement in radio frequency identification systems," U.S. Patent 8,217,760. July 2012. [abstract]
- P. Ahammad, C. Yeo, K. Ramchandran, and S. S. Sastry, "High speed video action recognition and localization," U.S. Patent 8,027,542. Sep. 2011. [abstract]
- J. M. Gilbert, K. Ramchandran, and G. Song, "Mechanism for streaming media data over wideband wireless networks," U.S. Patent 7,881,258. Feb. 2011. [abstract]
- H. Garudadri and K. Ramchandran, "Method, apparatus, and system for encoding and decoding side information for multimedia transmission," U.S. Patent 7,643,558. Jan. 2010. [abstract]
- J. Chou and K. Ramchandran, "Transcoding multimedia information within a network communication system," U.S. Patent 7,444,418. Oct. 2008. [abstract]
- R. Puri and K. Ramchandran, "Encoding and decoding of digital data using cues derivable at a decoder," U.S. Patent 7,400,774. July 2008. [abstract]
- S. Ha, S. Han, T. Kim, V. Bharghavan, U. Madhow, and K. Ramchandran, "Data transport acceleration and management within a network communication system," U.S. Patent 7,099,273. Aug. 2006.
- R. Puri and K. Ramchandran, "Encoding and decoding of digital data using cues derivable at a decoder," U.S. Patent Application. Aug. 2003.
- H. Garudadri and K. Ramchandran, "Method, apparatus and system for encoding and decoding side information for multimedia transmission," U.S. Patent Application. March 2003.
- K. Ramchandran, J. Chou, and I. Kozintsev, "Data transmission using arithmetic coding based continuous error detection," U.S. Patent 6,418,549. July 2002.
- B. S. Krongold, K. Ramchandran, and D. L. Jones, "Section division operating point determination method for multicarrier communication systems," U.S. Patent 6,400,773. June 2002.
- J. Chou and K. Ramchandran, "Transcoding multimedia information within a network communication system," U.S. Patent Application. May 2002.
- J. Chou and K. Ramchandran, "Decoding compressed image data," U.S. Patent Application. May 2002.
- K. Ramchandran, M. Vetterli, Y. Yu, and D. Anastassiou, "JPEG/MPEG decoder-compatible optimized thresholding for image and video signal compression," U.S. Patent 5,734,755. March 1998.
- K. Ramchandran, K. M. Uz, and M. F. Vetterli, "Multiresolution digital television broadcast system," U.S. Patent 5,267,021. Nov. 1993.
- K. W. Javitt and K. Ramchandran, "Circuit for digitally adding loss to a signal," U.S. Patent 5,237,591. Aug. 1993.

## Masters Reports

- V. Narasimha Swamy, K. Ramchandran, and R. Venkataramanan, "Low-Complexity Interactive Algorithms for Synchronization from Deletions, Insertions, and Substitutions," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2015-227, Dec. 2015. [abstract]