Alejandro Lancho

Alejandro Lancho

Universidad Carlos III de Madrid, Department of Signal Theory and Communications, Signal Processing and Learning Group

Publications

Preprints

  1. R. Oliver, J. Pérez-Sabater, L. Paz-Arbaizar, A. Lancho, A. Artés, P. M. Olmos, “A Foundation Model for Patient Behavior Monitoring and Suicide Detection,” Mar. 2025. arXiv

Lecture Notes

  1. G. Durisi and A. Lancho, Transmitting short packets over wireless channels--an information-theoretic perspective, Nov. 2020.

Journal Papers

  1. A. Lancho, A. Weiss, G.C.F. Lee, T. Jayashankar, B. Kurien, Y. Polyanskiy, G.W. Wornell, “RF Challenge: The Data-Driven Radio Frequency Signal Separation Challenge,” IEEE Open J. Commun. Soc., Apr. 2025 arXiv IEEExplore
  2. A.O. Kislal, A. Lancho, G. Durisi, and E. Strom, “Efficient evaluation of the error probability for pilot-assisted URLLC with Massive MIMO,” IEEE Journal Sel. Areas Commun., May 2023. arXiv IEEExplore
  3. A. Lancho, G. Durisi, and L. Sanguinetti, “Cell-free Massive MIMO for URLLC: A finite-blocklength analysis,” IEEE Trans. Wireless Commun., Apr. 2023. arXiv IEEExplore YouTube
  4. K.-H. Ngo, A. Lancho, G. Durisi, and A. Graell i Amat, “Unsourced multiple access with random user activity,” IEEE Trans. Inf. Theory, Feb. 2023. arXiv IEEExplore Matlab code
  5. J. Ostman, A. Lancho, G. Durisi, and L. Sanguinetti, “URLLC with Massive MIMO: Analysis and design at finite blocklength,” IEEE Trans. Wireless Commun., Apr. 2021. arXiv IEEExplore Matlab code
  6. A. Lancho, J. Ostman, G. Durisi, T. Koch, and G. Vazquez-Vilar, “Saddlepoint Approximations for Short-Packet Wireless Communications,” IEEE Trans. Wireless Commun., Jul. 2020. IEEExplore arXiv e-Archivo
  7. A. Lancho, T. Koch, and G. Durisi, “On single-antenna Rayleigh block-fading channels at finite blocklength,” IEEE Trans. Inf. Theory, Jan. 2020. IEEExplore arXiv e-Archivo
  8. V. P. Gil Jiménez, A. Lancho Serrano, B. Genovés Guzmán and A. García Armada, “Learning mobile communications standards through flexible software defined radio base stations,” IEEE Communications Magazine, May 2017. IEEExplore e-Archivo
  9. B. Genovés Guzmán, A. Lancho Serrano and V. P. Gil Jiménez, “Cooperative optical wireless transmission for improving performance in indoor scenarios for visible light communications,” IEEE Transactions on Consumer Electronics, Nov 2015. IEEExplore e-Archivo

Conference Papers

  1. A. Rodriguez, A. Lancho, A. Weiss, “Learning to Separate RF Signals Under Uncertainty: Detect-Then-Separate vs. Unified Joint Models,” accepted at IEEE Int. Conf. Commun. (ICC), Glasgow, Scotland, UK, May 2026. arXiv
  2. M. Martinez-Garcia, R. Vazquez Alvarez, A. Lancho, P. M. Olmos, I. Valera, “A Probabilistic Hard Concept Bottleneck for Steerable Generative Models,” accepted at Int. Conf. Learn. Representations (ICLR), Rio de Janeiro, Brazil, 2026. OpenReview
  3. A. Weiss, A. Lancho, “Extremum-Based Joint Compression and Detection for Distributed Sensing,” accepted at Asilomar Conf. Signals, Syst., Comput., Pacific Grove, CA, U.S.A., Oct. 2025.
  4. C. Prothmann et al., ``Advancing AI Challenges for the United States Department of the Air Force*,'' IEEE High Performance Extreme Computing Conference (HPEC), Wakefield, MA, USA, Oct. 2025. IEEExplore arXiv
  5. T. Jayashankar, B. Kurien, A. Lancho, G.C.F. Lee, Y. Polyanskiy, A. Weiss, G.W. Wornell, “The Data-Driven Radio Frequency Signal Separation Challenge,” IEEE Int. Conf. Acoust., Speech, Signal Process. (ICASSP), Seoul, Republic of Korea, Apr. 2024. IEEExplore Open Access Website GitHub
  6. T. Jayashankar, G.C.F. Lee, A. Lancho, A. Weiss, Y. Polyanskiy, G.W. Wornell, “Score-based Source Separation with Applications to Digital Communication Signals,” in Proc. Conf. Neural Information Processing Systems (NeurIPS), New Orleans, LA, U.S.A., Dec. 2023. arXiv OpenReview Website GitHub
  7. A. Fengler, A. Lancho, Y. Polyanskiy, “Coded Orthogonal Modulation for the Multi-Antenna Multiple-Access Channel,” in Proc. IEEE Int. Symp. Topics Coding (ISTC), Brest, France, Sep. 2023. IEEExplore arXiv
  8. A. Weiss, A. Lancho, G.C.F. Lee, “Estimation, Filtering and Decoding via Deep Learning,” Tutorial at EUSIPCO 2023, Helsinki, Finland, Sep. 2023. SlidesCheat SheetKaggleGithub
  9. A. Fengler, A. Lancho, K. Narayanan, Y. Polyanskiy, “On the Advantages of Asynchrony in the Unsourced MAC,” in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Taipei, Taiwan, Jun. 2023. IEEExplore arXiv
  10. A. Weiss, A. Lancho, Y. Bu, G.W. Wornell, “A Bilateral Bound on the Mean-Square Error for Estimation in Model Mismatch,” in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Taipei, Taiwan, Jun. 2023. IEEExplore arXiv
  11. G.C.F. Lee, A. Weiss, A. Lancho, Y. Polyanskiy, G.W. Wornell, “On neural architectures for deep learning-based source separation of co-channel OFDM signals,” in Proc. IEEE Int. Conf. Acoust., Speech, Signal Process. (ICASSP), Rhodes Island, Greece, Jun. 2023. IEEExplore arXiv Python code
  12. A. Lancho, A. Weiss, G.C.F. Lee, J. Tang, Y. Bu, Y. Polyanskiy and G.W. Wornell, “Data-driven blind synchronization and interference rejection for digital communication signals,” in Proc. IEEE Global Communications Conference (GLOBECOM), Rio de Janeiro, Brazil, Dec. 2022. IEEExplore arXiv Python code
  13. A.O. Kislal, A. Lancho, G. Durisi and E.G. Ström, “Efficient evaluation of the error probability for pilot-assisted finite-blocklength transmission,” in Proc. Asilomar Conf. Signals, Syst., Comput., Pacific Grove CA, U.S.A., Nov. 2022. IEEExplore
  14. A. Lancho, A. Fengler and Y. Polyanskiy, “Finite-blocklength results for the A-channel: applications to unsourced random access and group testing,” in Proc. 58th Annual Allerton Conference on Communication, Control, and Computing, Champaign, IL, Sep. 27-30, 2022. IEEExplore arXiv
  15. G.C.F. Lee, A. Weiss, A. Lancho, J. Tang, Y. Bu, Y. Polyanskiy and G.W. Wornell, “Exploiting temporal structures of cyclostationary signals for data-driven single-channel source separation,” in Proc. IEEE International Workshop for Machine Learning and Signal Processing (MLSP), Xi'an, China, Aug. 2022. IEEExplore arXiv Python code (Best student paper award)
  16. G. Tsaloli, A. Lancho, K. Mitrokotsa, and G. Durisi, “Verifiable, Secure and energy-efficient private data aggregation in wireless sensor networks,” in Proc. 27th ACM on Symposium on Access Control Models and Technologies (SACMAT '22), New York, NY, USA, Jun. 2022. ACM open-access
  17. A. Lancho, J. Östman and G. Durisi, “On joint detection and decoding in short-packet communications,” in Proc. IEEE Global Communications Conference (GLOBECOM), Madrid, Spain, Dec. 2021. IEEExplore arXiv Matlab code YouTube
  18. A. Lancho, G. Durisi, and L. Sanguinetti, “Cell free Massive MIMO with short packets,” in Proc. IEEE Int. Workshop on Signal Process. Adv. and Wireless Commun. (SPAWC), Lucca, Italy, Sep. 2021. IEEExplore arXiv YouTube
  19. K.-H. Ngo, A. Lancho, G. Durisi, and A. Graell i Amat, “Massive Uncoordinated access with random user activity,” in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Melbourne, Australia, Jul. 2021. IEEExplore arXiv
  20. A. Lancho, J. Östman, G. Durisi, and L. Sanguinetti, “A finite-blocklength analysis for URLLC with Massive MIMO,” in Proc. IEEE Int. Conf. Commun. (ICC), Montreal, Canada, Jun. 2021. IEEExplore
  21. A. Lancho, J. Östman, T. Koch and G. Vazquez-Vilar, “Finite-Blocklength approximations for noncoherent Rayleigh block-fading channels,” in Proc. Asilomar Conf. Signals, Syst., Comput., Pacific Grove CA, U.S.A., Nov. 2019. IEEExplore e-Archivo
  22. J. Östman, A. Lancho, and G. Durisi, “Short-packet transmission over a bidirectional massive MIMO link,” in Proc. Asilomar Conf. Signals, Syst., Comput., Pacific Grove CA, U.S.A., Nov. 2019. arXiv IEEExplore
  23. A. Lancho, J. Östman, G. Durisi, T. Koch, and G. Vazquez-Vilar, “Saddlepoint approximations for noncoherent single-antenna Rayleigh block-fading channels,” in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Paris, France, Jul. 2019. IEEExplore e-Archivo
  24. G. Vazquez-Vilar, A. Guillén i Fàbregas, T. Koch and A. Lancho, “Saddlepoint approximation of the error probability of binary hypothesis testing,” in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Vail, USA, Jun. 2018. IEEExplore e-Archivo
  25. A. Lancho, T. Koch, and G. Durisi, “Normal approximation for fading channels,” in Proc. Conf. Infor. Sci. and Syst. (CISS), Princeton, NJ, USA, Mar. 2018, invited paper. IEEExplore e-Archivo
  26. J. Font-Segura, G. Vazquez-Vilar, A. Martinez, A. Guillén i Fàbregas and A. Lancho, “Saddlepoint Approximations of Lower and Upper Bounds to the Error Probability in Channel Coding,” in Proc. Conf. Infor. Sci. and Syst. (CISS), Princeton, NJ, USA, Mar. 2018, invited paper. IEEExplore e-Archivo
  27. A. Lancho, T. Koch, and G. Durisi, “A high-SNR normal approximation for single-antenna Rayleigh block-fading channels,” in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Aachen, Germany, Jun. 2017. IEEExplore e-Archivo  Finalist student best paper award

PhD Thesis

  1. A. Lancho, “Fundamental limits of short-packet wireless communications,” PhD. Dissertation, Universidad Carlos III de Madrid, Jun. 2019. pdf