Search Results for author: Jonathan I Tamir

Found 3 papers, 3 papers with code

MIMO Channel Estimation using Score-Based Generative Models

2 code implementations14 Apr 2022 Marius Arvinte, Jonathan I Tamir

We introduce a framework for training score-based generative models for wireless MIMO channels and performing channel estimation based on posterior sampling at test time.

Score-Based Generative Models for Robust Channel Estimation

1 code implementation16 Nov 2021 Marius Arvinte, Jonathan I Tamir

We train a score-based model on channel realizations from the CDL-D model for two antenna spacings and show that the approach leads to competitive in- and out-of-distribution performance when compared to generative adversarial network (GAN) and compressed sensing (CS) methods.

Generative Adversarial Network

High Fidelity Deep Learning-based MRI Reconstruction with Instance-wise Discriminative Feature Matching Loss

1 code implementation27 Aug 2021 Ke Wang, Jonathan I Tamir, Alfredo De Goyeneche, Uri Wollner, Rafi Brada, Stella Yu, Michael Lustig

By adding an additional loss function on the low-dimensional feature space during training, the reconstruction frameworks from under-sampled or corrupted data can reproduce more realistic images that are closer to the original with finer textures, sharper edges, and improved overall image quality.

MRI Reconstruction SSIM

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