56 citations · 164 across the 37 of their papers we have counts for
12 papers · 1 filter
Low-Rank Tensor Completion via Novel Sparsity-Inducing Regularizers
Zhi-Yong Wang, Hing Cheung So, Abdelhak M. Zoubir
To alleviate the bias generated by the l1-norm in the low-rank tensor completion problem, nonconvex surrogates/regularizers have been suggested to replace the tensor nuclear norm,…
A framework to generate sparsity-inducing regularizers for enhanced low-rank matrix completion
Zhi-Yong Wang, Hing Cheung So
Applying half-quadratic optimization to loss functions can yield the corresponding regularizers, while these regularizers are usually not sparsity-inducing regularizers (SIRs). To…
Robust matrix completion via Novel M-estimator Functions
Zhi-Yong Wang, Hing Cheung So
M-estmators including the Welsch and Cauchy have been widely adopted for robustness against outliers, but they also down-weigh the uncontaminated data. To address this issue, we de…
Robust Low-Rank Matrix Completion via a New Sparsity-Inducing Regularizer
Zhi-Yong Wang, Hing Cheung So, Abdelhak M. Zoubir
This paper presents a novel loss function referred to as hybrid ordinary-Welsch (HOW) and a new sparsity-inducing regularizer associated with HOW. We theoretically show that the re…
3D Multi-Target Localization Via Intelligent Reflecting Surface: Protocol and Analysis
Meng Hua, Guangji Chen, Kaitao Meng +3
With the emerging environment-aware applications, ubiquitous sensing is expected to play a key role in future networks. In this paper, we study a 3-dimensional (3D) multi-target lo…
Network Topology Inference with Sparsity and Laplacian Constraints
Jiaxi Ying, Xi Han, Rui Zhou +2
We tackle the network topology inference problem by utilizing Laplacian constrained Gaussian graphical models, which recast the task as estimating a precision matrix in the form of…
Intelligent Reflecting Surface Assisted Localization: Performance Analysis and Algorithm Design
Meng Hua, Qingqing Wu, Wen Chen +3
The target sensing/localization performance is fundamentally limited by the line-of-sight link and severe signal attenuation over long distances. This paper considers a challenging…
One-Bit Spectrum Sensing for Cognitive Radio
Pei-Wen Wu, Lei Huang, David Ramírez +2
Spectrum sensing in cognitive radio necessitates effective monitoring of wide bandwidths, which requires high-rate sampling. Traditional spectrum sensing methods employing high-pre…
Robust time-of-arrival localization via ADMM
Wenxin Xiong, Christian Schindelhauer, Hing Cheung So
This article considers the problem of source localization (SL) using possibly unreliable time-of-arrival (TOA) based range measurements. Adopting the strategy of statistical robust…
One-Bit Covariance Reconstruction with Non-zero Thresholds: Algorithm and Performance Analysis
Yu-Hang Xiao, Lei Huang, David Ramírez +2
Covariance matrix reconstruction is a topic of great significance in the field of one-bit signal processing and has numerous practical applications. Despite its importance, the con…
Globally Optimized TDOA High Frequency Source Localization Based on Quasi-Parabolic Ionosphere Modeling and Collaborative Gradient Projection
Wenxin Xiong, Christian Schindelhauer, Hing Cheung So
We investigate the problem of high frequency (HF) source localization using the time-difference-of-arrival (TDOA) observations of ionosphere-refracted radio rays based on quasi-par…
Disproving Sum-Difference Co-Array Property
Jisheng Dai, Hing Cheung So
The recently published paper by Gupta and Agrawal [1] exploited the sum-difference co-array (SDCA) to enhance the virtual aperture of sparse arrays. We argue that the key SDCA prop…