• 700206817US01, file-b, patent pending: "Local frequency based estimators for anomaly detection", Lakshminarayan Choudur, Alexander Singh Alvarado, Evan Kriminger, Jose C. Principe
  • 201006101US01, file-b, patent pending: "Dynamical systems approach to on-line detection", Lakshminarayan Choudur, Evan Kriminger, Alexander Singh AlvaradoJose C. Principe
  • 700205859US01, file-b, patent pending: "Time encoding using the integrate and fire sampler", Lakshminarayan Choudur, Alexander Singh Alvarado, Jose C. Principe
  • 700209666US01, file-b, patent pending: “Time-based compression and classification of heartbeats”, Lakshminarayan Choudur, Alexander Singh Alvarado, Jose C. Principe
Journal under Review .
  • John G Harris, Toshi Nishida, Jose C Principe, Erin Patrick, Viswanath Sankar, Alexander Singh Alvarado, Jie Xu, Manu Rastogi, Shengfeng Yen, Babak Mahmoudi and Justin C Sanchez. An implantable low-bandwidth microelectrode recording system based on pulse timing representation for brain-machine interfaces, Journal of  Neural Engineering, 2011 [submitted]
  • Manu Rastogi, Alexander Singh Alvarado , John G. Harris , JC Principe. "The Integrate and Fire Sampler: A Replacement for Conventional ADCs". Transactions on Circuits and Systems - I, IEEE. [Invited paper] [submitted].
  • Alexander Singh Alvarado, Choudur Lakshminarayan, Jose C. Priıncipe, "Time-based Compression and Classification of Heartbeats", Transactions on Biomedical Engineering (IEEE-TBME),  2012 [link]
  • Xie Xu, Alexander Singh Alvarado, Alireza Entezari, Reconstruction of Irregularly-Sampled Volumetric Data in Efficient Box Spline Spaces, IEEE Transactions on Medical Imaging (ITMI), 2012 [link]
  • H.G. Feichtinger, J. C. Principe, J.L. Romero, A. S. Alvarado, G. Velasco. A sampling and reconstruction framework for the integrate and fire model, Advances in computational mathematics, 36, 1,67-78, 2012 [link]
Peer-Reviewed Conference
  • Singh Alvarado Alexander, Principe, Jose C.  A Real-Time Reconstruction Algorithm for the Integrate and Fire Sampler, Asilomar 2011 [link]
  • Singh Alvarado Alexander, Choudur Lakshminarayan, Principe C. Jose. Time encoding using the Integrate and fire sampler: A Discriminative Representation for Neural Action Potentials, International Conference on Sampling Theory and Applications SAMPTA'11, 2011 [accepted for talk] [link]
  • Singh Alvarado Alexander, Principe C. Jose. From Compressive to Adaptive Sampling of Neural and ECG Recordings. IEEE International Conference on Acoustics, Speech and Signal Pocessing (ICASSP), 2011 [accepted poster] [link]
  • Rastogi M, Alvarado AS, Harris JG, Principe JC. Integrate and Fire Circuit as an ADC replacement. In: 2011 IEEE International Symposium on Circuits and Systems. [best paper award] [accepted for talk] [link]
  • Alvarado ASRastogi M, Harris JG, Principe JC. The Integrate-and-Fire Sampler: A Special Type of Asynchronous Σ - Δ Modulator. In: 2011 IEEE International Symposium on Circuits and Systems [accepted for talk] [link]
  • Harris J.G., Jie Xu, Rastogi M. Singh-Alvarado, A., Garg V., Principe J.C., Vuppamandla, K., "Real time signal reconstruction from spikes on a digital signal processor," Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on, pp.1060-1063, 18-21 May 2008 [link]
  • Alvarado A.S., Principe J.C., Harris J.G. "Stimulus reconstruction from the biphasic integrate-and-fire sampler," Neural Engineering, 2009. NER '09. 4th International IEEE/EMBS Conference on, vol., pp.415-418, April 29 2009-May 2 2009 [link]