19 papers
Fourier Preconditioning for Neural Feature Learning
Preston Pitzer, Anish Pradhan, Harpreet S. Dhillon
Mutual information (MI)-inspired feature learning techniques are capable of generating low-dimensional embeddings that retain nonlinear dependence structures, but direct estimation…
Björck Sequences: Extension to Arbitrary Lengths, Correlation Analysis, and Applications to Wireless Systems
Harish K. Dureppagari, Chiranjib Saha, R. Michael Buehrer +1
In this paper, we propose a sequence construction framework that extends prime-length Björck sequences, a class of Constant Amplitude Zero Autocorrelation (CAZAC) sequences, to ar…
A New Location Estimator for Mixed LOS & NLOS scenarios
Gaurav Duggal, Richard M. Buehrer, Harpreet S. Dhillon +1
Time-of-arrival (TOA)-based localization in mixed line-of-sight (LOS) and non-line-of-sight (NLOS) environments is challenging because conventional Euclidean range models do not ca…
Optimal Anchor Placement for Wireless Localization in Mixed LOS and NLOS Scenarios
Gaurav Duggal, R. Michael Buehrer, Harpreet S. Dhillon +1
This paper develops a general optimal experimental design framework for anchor placement in localization and related estimation problems whose Fisher information matrix (FIM) can b…
Full Motion State Localization with Extra Large Aperture Arrays
Wasif J. Hussain, Don-Roberts Emenonye, R. Michael Buehrer +1
Conventional localization techniques typically assume far-field (FF) propagation characterized by planar wavefronts and simplified spatial relationships. The use of higher carrier…
LEO-based Carrier-Phase Positioning for 6G: Design Insights and Comparison with GNSS
Harish K. Dureppagari, Harikumar Krishnamurthy, Chiranjib Saha +4
The integration of non-terrestrial networks (NTN) into 5G new radio (NR) enables a new class of positioning capabilities based on cellular signals transmitted by Low-Earth Orbit (L…