Preprints

R. Venkataramanan and S. Tatikonda, "The Gaussian Rate-Distortion Function of Sparse Regression Codes with Optimal Encoding" [PDF]

R. Venkataramanan, V. N. Swamy and K. Ramchandran, "Low-Complexity Interactive Algorithms for Synchronization from Deletions, Insertions, and Substitutions" [PDF]

Journal Articles

R. Venkataramanan, T. Sarkar and S. Tatikonda, "Lossy Compression via Sparse Linear Regression: Computationally Efficient Encoding and Decoding", IEEE Transactions on Information Theory, vol. 60, no. 6, pp. 3265-3278, June 2014. [PDF]

R. Venkataramanan, A. Joseph and S. Tatikonda, "Lossy Compression via Sparse Linear Regression: Performance under Minimum-distance Encoding", IEEE Transactions on Information Theory, vol. 60, no. 6, pp. 3254-3264, June 2014. [PDF]

R. Venkataramanan, S. Tatikonda, L. Lastras-Montaño and M. Franceschini, "Rewritable storage channels with hidden state", IEEE Journal on Selected Areas in Communication, vol. 32, no. 5, pp. 815-824, May 2014. [PDF]

R. Venkataramanan, S. Tatikonda and K. Ramchandran, "Achievable Rates for channels with deletions and insertions", IEEE Transactions on Information Theory, vol. 59, no.11, pp. 6990-7013, November 2013. [PDF]

R. Venkataramanan and S. S. Pradhan, "An Achievable Rate Region for the Broadcast Channel with Feedback", IEEE Transactions on Information Theory, vol. 59, no.10, pp. 6175-6191, October 2013. [PDF]

R. Venkataramanan and S. S. Pradhan, "A New Achievable Rate Region for the Discrete Memoryless Multiple-Access Channel with Feedback", IEEE Transactions on Information Theory, vol. 57, no.12, pp. 8038-8054, December 2011. [PDF]

R. Venkataramanan and S. S. Pradhan, "Achievable rates for multiple descriptions with feed-forward", IEEE Transactions on Information Theory, vol. 57, no.4, pp. 2270-2277, April 2011. [PDF]

R. Venkataramanan and S. S. Pradhan, "On computing the feedback capacity of channels and the feed-forward rate-distortion function of sources", IEEE Transactions on Communications, vol. 58, pp. 1889-1896, July 2010. [PDF]

R. Venkataramanan and S. S. Pradhan, "Source coding with feedforward: Rate-distortion theorems and error exponents for a general source", IEEE Transactions on Information Theory, vol. 53, pp. 2154-2179, June 2007. [PDF]

R. Venkataramanan and K. M. M. Prabhu, "Estimation of Frequency Offset using Warped DFT", Signal Processing, vol. 86, pp. 250-256, Feb. 2006 . [PDF]


Thesis

R. Venkataramanan, "Information-theoretic results on communication problems with feed-forward and feedback", Ph.D Thesis, University of Michigan, 2008. [PDF], [Slides from thesis defense]


Conference Proceedings

R. Venkataramanan and S. Tatikonda, "The Gaussian Rate-Distortion Function of Sparse Regression Codes with Optimal Encoding", Proc. IEEE Int. Symp. on Information Theory (ISIT), 2014. [PDF]

R. Venkataramanan, V. N. Swamy and K. Ramchandran, "Efficient Interactive Algorithms for File Synchronization under General Edits", Proc. 51st Allerton Conf. on Communication, Control, and Computing , 2013. [PDF]

R. Venkataramanan and S. Tatikonda, "Sparse Regression Codes: Recent Results and Future Directions", Proc. IEEE Information Theory Workshop, 2013 (invited). [PDF] [Slides]

R. Venkataramanan and S. Tatikonda, "Improved Capacity Lower Bounds for Channels with Deletions and Insertions", Proc. IEEE Information Theory Workshop, 2013 . [PDF] [Slides]

R. Venkataramanan, T. Sarkar, and S. Tatikonda, "Lossy Compression via Sparse Linear Regression: Computationally Efficient Encoding and Decoding'', Proc. IEEE Int. Symp. on Information Theory (ISIT), 2013. [PDF] [Slides]

R. Venkataramanan and S. Tatikonda, "Sparse Regression Codes for Multi-terminal Source and Channel Coding", Proc. 50th Allerton Conf. on Communication, Control, and Computing , 2012. [PDF] [Slides]

R. Venkataramanan, S. Tatikonda, L. Lastras-Montaño and M. Franceschini, "Coding Strategies for the uniform noise rewritable channel with hidden state", Proc. IEEE Int. Symp. on Information Theory (ISIT), 2012. [PDF] [Slides]

R. Venkataramanan, A. Joseph, and S. Tatikonda, "Gaussian rate-distortion via sparse regression over compact dictionaries", Proc. IEEE Int. Symp. on Information Theory (ISIT), 2012. [PDF] [Slides]

R. Venkataramanan, S. Tatikonda and K. Ramchandran, "Achievable rates for channels with deletions and insertions", Proc. IEEE Int. Symp. on Information Theory (ISIT), 2011. [PDF] [Slides]

R. Venkataramanan, S. Tatikonda and K. Ramchandran, "Bounds on the optimal rate for synchronization from insertions and deletions", Proc. of the Information Theory and Applications Workshop , San Diego, Feb. 2011. [PDF] [Slides]

R. Venkataramanan, H. Zhang and K. Ramchandran, "Interactive Low-Complexity Codes for Synchronization from Deletions and Insertions", Proc. of the 48th Annual Allerton Conference(Monticello, IL), Sep. 2010. [PDF] [Slides]

R. Venkataramanan and S. S. Pradhan, "Achievable Rates for the Broadcast Channel with Feedback", Proc. IEEE Int. Symp. on Information Theory (ISIT), 2010. [PDF] [Slides]

A. Nazari, R. Venkataramanan , D. Krithivasan, S. S. Pradhan and A. Anastasopoulos, "Typicality graphs and their properties", Proc. IEEE Int. Symp. on Information Theory (ISIT), 2010. [PDF]

R. Venkataramanan and S. S. Pradhan, "A New Achievable Rate Region for the Discrete Memoryless Multiple-Access Channel with Feedback", Proc. IEEE Int. Symp. on Information Theory (ISIT), 2009. [PDF]

R. Venkataramanan and S. S. Pradhan, "Multiple Descriptions with Feed-forward: A Single-letter Achievable Rate Region ", Proc. IEEE Int. Symp. on Information Theory (ISIT), 2008. [PDF], [Slides]

R. Venkataramanan and S. S. Pradhan, "On Evaluating the Rate-distortion function of sources with feed-forward and the capacity of channels with feedback", Proc. IEEE Int. Symp. on Information Theory (ISIT), 2007. [PDF], [Slides]

R. Venkataramanan and S. S. Pradhan, "Directed Information for Communication Problems with Common Side Information and Delayed Feedback/Feedforward", Proc. of the 43rd Annual Allerton Conference on Communication, Control, and Computing, Sep. 2005. [PDF]

R. Venkataramanan and S. S. Pradhan, "Source Coding with Feed-forward" Proc. IEEE Information Theory Workshop, San Antonio, Oct. 2004. [PDF]

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