Publications

Journal Articles

• M. Gkagkos, K. R. Narayanan, J.-F. Chamberland, and C. N. Georghiades. FASURA: A Scheme for Quasi-Static Massive MIMO Unsourced Random Access Channels. IEEE Transactions on Communications, Early Access, 2023.
• A. K. Pradhan, V. K. Amalladinne, A. Vem, K. R. Narayanan, J.-F. Chamberland. Sparse IDMA: A Joint Graph-Based Coding Scheme for Unsourced Random Access. IEEE Transactions on Communications, Early Access, 2022. arXiv
• J. R. Ebert, V. K. Amalladinne, S. Rini, J.-F. Chamberland, K. R. Narayanan. Coded Demixing for Unsourced Random Access. IEEE Transactions on Signal Processing, 70:2972-2984, June, 2022. arXiv
• V. K. Amalladinne, J. R. Ebert, J.-F. Chamberland, and K. R. Narayanan. An Enhanced Decoding Algorithm for Coded Compressed Sensing with Applications to Unsourced Random Access. MDPI Sensors, Massive Machine-Type Communications Towards 6G, 22(2):676, 2022. arXiv
• V. K. Amalladinne, A. K. Pradhan, C. Rush, J.-F. Chamberland, K. R. Narayanan. Unsourced random access with coded compressed sensing: Integrating AMP and belief propagation. IEEE Transactions on Information Theory, 68(4):2384-2409, April, 2022. arXiv.
• V. K. Amalladinne, J.-F. Chamberland, and K. R. Narayanan. A coded compressed sensing scheme for unsourced multiple access. IEEE Transactions on Information Theory, 66(10):6509–6533, October 2020. arXiv.
• A. Vem, K. R. Narayanan, J.-F. Chamberland, and J. Cheng. A user-independent successive interference cancellation based coding scheme for the unsourced random access Gaussian channel. IEEE Transactions on Communications, 67(12):8258–8272, December 2019.

Conference Proceedings

• V. Rajagopalan, V. T. Kunde, C. S. K. Valmeekam, K. Narayanan, S. Shakkottai, D. Kalathil, J.-F. Chamberland. Transformers are Efficient In-Context Estimators for Wireless Communication. arXiv.
• C. S. K. Valmeekam, K. Narayanan, D. Kalathil, J.-F. Chamberland, S. Shakkottai. LLMZip: Lossless Text Compression using Large Language Models. arXiv.
• M. Gkagkos, J.-F. Chamberland, C. N. Georghiades, K. R. Narayanan. Scalable Cell-Free Massive MIMO Unsourced Random Access. Submitted to the International Conference on Communications (ICC), Denver, CO, USA, June 2024. IEEE. arXiv.
• W. W. Zheng, J. R. Ebert, S. Rini, and J.-F. Chamberland. Coding for the Unsourced A-Channel with Erasures: The Linked Loop Code. In the 31st European Signal Processing Conference (EUSIPCO), Helsinki, Finland, September 2023. IEEE.
• M. Gkagkos, K. R. Narayanan, J.-F. Chamberland, and C. N. Georghiades. PolarAir: A Compressed Sensing Scheme for Over-the-Air Federated Learning. In Information Theory Workshop (ITW), Saint-Malo, France, April 2023. IEEE. arXiv.
• J. R. Ebert, J.-F. Chamberland, and K. R. Narayanan. On Sparse Regression LDPC Codes. In International Symposium on Information Theory (ISIT), Taipei, Taiwan, June 2023. IEEE. arXiv.
• J. R. Ebert, K. R. Narayanan, and J.-F. Chamberland. HashBeam: Enabling Feedback Through Downlink Beamforming in Unsourced Random Access. In the 56th Annual Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, USA, November 2022. IEEE. YouTube.
• M. Gkagkos, K. R. Narayanan, J.-F. Chamberland, and C. N. Georghiades. FASURA: A Scheme for Quasi-Static Massive MIMO Unsourced Random Access Channels. In International Workshop on Signal Processing Advances in Wireless Communication (SPAWC), Oulu, Finland, July 2022. IEEE. arXiv
• V. K. Amalladinne, J.-F. Chamberland, and K. R. Narayanan. Coded Compressed Sensing with Successive Cancellation List Decoding for Unsourced Random Access with Massive MIMO In Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, November 2021. IEEE. arXiv.
• J. R. Ebert, V. K. Amalladinne, S. Rini, J.-F. Chamberland, and K. R. Narayanan. Stochastic Binning and Coded Demixing for Unsourced Random Access. In International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Lucca, Italy, 2021. IEEE. arXiv. YouTube.
• V. K. Amalladinne, A. Hao, S. Rini, and J.-F. Chamberland. Multi-Class Unsourced Random Access via Coded Demixing. In International Symposium on Information Theory (ISIT), Melbourne, Australia, July 2021. IEEE. arXiv.
• M. Gkagkos, A. K. Pradhan, V. Amalladinne, K. R. Narayanan, J.-F. Chamberland, and C. N. Georghiades. Asymptotic Support Recovery Using Codes for Unsourced Multiple Access. In International Symposium on Information Theory (ISIT), Melbourne, Australia, July 2021. IEEE. arXiv.
• A. K. Pradhan, V. Amalladinne, K. R. Narayanan, and J.-F. Chamberland. LDPC Codes with Soft Interference Cancellation for Uncoordinated Unsourced Multiple Access. In International Conference on Communications (ICC), Montreal, Canada, June 2021. IEEE. arXiv.
• J. R. Ebert, V. K. Amalladinne, J.-F. Chamberland, and K. R. Narayanan. A Hybrid Approach to Coded Compressed Sensing where Coupling Takes Place via the Outer Code. In International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Toronto, Canada, June 2021. IEEE. arXiv. YouTube.
• V. K. Amalladinne, A. K. Pradhan, C. Rush, J.-F. Chamberland, and K. R. Narayanan. On approximate message passing for unsourced access with coded compressed sensing. In International Symposium on Information Theory (ISIT), Los Angeles, CA, June 2020. IEEE. arXiv.
• A. K. Pradhan, V. Amalladinne, K. R. Narayanan, and J.-F. Chamberland. Polar coding and random spreading for unsourced multiple access. In International Conference on Communications (ICC), Dublin, Ireland, June 2020. IEEE. arXiv.
• V. K. Amalladinne, J.-F. Chamberland, and K. R. Narayanan. An enhanced decoding algorithm for coded compressed sensing. In International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Barcelona, Spain, May 2020. IEEE. arXiv.
• A. Pradhan, V. Amalladinne, A. Vem, K. R. Narayanan, and J.-F. Chamberland. A joint graph based coding scheme for the unsourced random access Gaussian channel. In Global Communications Conference, Waikoloa, HI, December 2019. IEEE. arXiv.
• V. K. Amalladinne, K. R. Narayanan, J.-F. Chamberland, and D. Guo. Asynchronous neighbor discovery using coupled compressive sensing. In International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Brighton, UK, May 2019. IEEE. arXiv.
• V. K. Amalladinne, A. Vem, D. K. Soma, K. R. Narayanan, and J.-F. Chamberland. A coupled compressive sensing scheme for unsourced multiple access. In International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Calgary, Canada, April 2018. IEEE. arXiv.
• A. Vem, K. R. Narayanan, J. Cheng, and J.-F. Chamberland. A user-independent serial interference cancellation based coding scheme for the unsourced random access Gaussian channel. In Information Theory Workshop (ITW), Kaohsiung, Taiwan, November 2017. IEEE.

Tutorials/ Presentations

• J.-F. Chamberland, Applications of Sparse Regression LDPC Codes, Communication Theory Workshop (CTW), Hualien, Taiwan, 2023.
• K. Narayanan, Connections between Multiple Access and Sparse Recovery, Centre for Networked Intelligence, IISc, 2022. YouTube
• J.-F. Chamberland, K.R. Narayanan. Unsourced Multiple Access (UMAC): Information Theory and Coding. Signal Processing and Communications Conference (SPCOM), Indian Institute of Science, 2022. PDF LaTeX
• J.-F. Chamberland, K.R. Narayanan, Y. Polyanskiy. Unsourced Multiple Access (UMAC): Information Theory and Coding. International Symposium on Information Theory, Melbourne, Australia, 2021.
• J.-F. Chamberland, K.R. Narayanan. Algorithms for Coded Random Access and Inference in Large Dimensional Spaces. Signal Processing and Communications Conference (SPCOM), Indian Institute of Science, 2020. YouTube.