5 papers
Asynchronous Multi-Channel USF: Modified CRT for Modulo Unfolding
Ruiming Guo, Ayush Bhandari
The Unlimited Sampling Framework (USF) overcomes the traditional trade-off between dynamic range and digital resolution, achieving performance unattainable with standard ADCs. Its…
Unlocking Off-the-Grid Sparse Recovery with Unlimited Sensing: Simultaneous Super-Resolution in Time and Amplitude
Ruiming Guo, Ayush Bhandari
The recovery of Dirac impulses, or spikes, from filtered measurements is a classical problem in signal processing. As the spikes lie in the continuous domain while measurements are…
USF Spectral Estimation: Prevalence of Gaussian Cramér-Rao Bounds Despite Modulo Folding
Ruiming Guo, Ayush Bhandari
Spectral Estimation (SpecEst) is a core area of signal processing with a history spanning two centuries and applications across various fields. With the advent of digital acquisiti…
Blind Time-of-Flight Imaging: Sparse Deconvolution on the Continuum with Unknown Kernels
Ruiming Guo, Ayush Bhandari
In recent years, computational Time-of-Flight (ToF) imaging has emerged as an exciting and a novel imaging modality that offers new and powerful interpretations of natural scenes,…
Sub-Nyquist USF Spectral Estimation: Frequencies with Modulo Samples
Ruiming Guo, Yuliang Zhu, Ayush Bhandari
Digital acquisition of high bandwidth signals is particularly challenging when Nyquist rate sampling is impractical. This has led to extensive research in sub-Nyquist sampling meth…