117 citations · 236 across the 9 of their papers we have counts for
10 papers
Structured Sensing Matrix Design for In-sector Compressed mmWave Channel Estimation
Hamed Masoumi, Nitin Jonathan Myers, Geert Leus +2
Fast millimeter wave (mmWave) channel estimation techniques based on compressed sensing (CS) suffer from low signal-to-noise ratio (SNR) in the channel measurements, due to the use…
Efficient Training of Volterra Series-Based Pre-distortion Filter Using Neural Networks
Vinod Bajaj, Mathieu Chagnon, Sander Wahls +1
We present a simple, efficient "direct learning" approach to train Volterra series-based digital pre-distortion filters using neural networks. We show its superior performance over…
Fast Nonlinear Fourier Transform Algorithms Using Higher Order Exponential Integrators
Shrinivas Chimmalgi, Peter J. Prins, Sander Wahls
The nonlinear Fourier transform (NFT) has recently gained significant attention in fiber optic communications and other engineering fields. Although several numerical algorithms fo…
Automatic Delay Tuning of a Novel Ring Resonator-based Photonic Beamformer for a Transmit Phased Array Antenna
L. Bliek, S. Wahls, I. Visscher +5
We present a novel photonic beamformer for a fully integrated transmit phased array antenna, together with an automatic procedure for tuning the delays in this system. Such an auto…
Fast Inverse Nonlinear Fourier Transforms for Continuous Spectra of Zakharov-Shabat Type
Sander Wahls, Vishal Vaibhav
The nonlinear Schrödinger equation (NSE) is well-known to model an ideal fiber-optic communication channel. Even though the NSE is a nonlinear evolution equation, it can be solved…
Online Optimization with Costly and Noisy Measurements using Random Fourier Expansions
Laurens Bliek, Hans R. G. W. Verstraete, Michel Verhaegen +1
This paper analyzes DONE, an online optimization algorithm that iteratively minimizes an unknown function based on costly and noisy measurements. The algorithm maintains a surrogat…