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View article: Guest Editorial Introduction to the Special Issue on Advanced Signal Processing and AI Technologies for Transportation Big Data and Their Applications in COVID-19 Scenario and Beyond
Guest Editorial Introduction to the Special Issue on Advanced Signal Processing and AI Technologies for Transportation Big Data and Their Applications in COVID-19 Scenario and Beyond Open
Compared with the traditional transportation data, the transportation big data (TBD) is under the background of "Internet + traffic." It is a great challenge for analyzing and processing TBD because of its complex and unstructured characte…
View article: Experimental species removal reveals positive pollinator-mediated reproductive interactions in an alpine meadow community
Experimental species removal reveals positive pollinator-mediated reproductive interactions in an alpine meadow community Open
These data belong to the manuscript "Experimental species removal reveals positive pollinator-mediated reproductive interactions in an alpine meadow community", including community and species-level databases.
View article: Guest Editorial: Special Section on Advanced Signal Processing and AI Technologies for Industrial Big Data
Guest Editorial: Special Section on Advanced Signal Processing and AI Technologies for Industrial Big Data Open
The papers in this special section focus on advanced signal processing and artificial intelligence (AI) technologies for industrial Big Data (IBD) powered by Industry 4.0. Modern industry has evolved from the traditional manufacturing indu…
View article: FMCW SAR Sparse Imaging Based on Approximated Observation: An Overview on Current Technologies
FMCW SAR Sparse Imaging Based on Approximated Observation: An Overview on Current Technologies Open
Sparsity-driven synthetic aperture radar (SAR) imaging technique for frequency modulation continuous wave (FMCW) has already shown the superiority in terms of performance improvement in imaging and recovery from down-sampled data. However,…
View article: An Accurate Imaging and Doppler Chirp Rate Estimation Algorithm for Airborne CSSAR-GMTI Systems
An Accurate Imaging and Doppler Chirp Rate Estimation Algorithm for Airborne CSSAR-GMTI Systems Open
Airborne circular stripmap synthetic aperture radar (CSSAR)-ground moving target indication (GMTI) systems are attractive tools for air-to-ground surveillance and monitoring, because of their advantages of short revisit time and large cove…
View article: A Novel Wide Area Multiple Azimuth Beam ISAR Imaging System
A Novel Wide Area Multiple Azimuth Beam ISAR Imaging System Open
A novel multiple azimuth beams (MAB) inverse synthetic aperture radar (ISAR) system, as well as, the corresponding processing algorithms are proposed in this paper, which is a promising technology for wide area surveillance (WAS). This sys…
View article: Unitary Matrix Completion-Based DOA Estimation of Noncircular Signals in Nonuniform Noise
Unitary Matrix Completion-Based DOA Estimation of Noncircular Signals in Nonuniform Noise Open
In this paper, a novel direction-of-arrival (DOA) estimation algorithm is proposed for noncircular signals with nonuniform noise by using the unitary matrix completion (UMC) technique. First, the proposed method utilizes the noncircular pr…
View article: Opportunistic Spectrum Access for UAV Communications Towards Ultra Dense Networks
Opportunistic Spectrum Access for UAV Communications Towards Ultra Dense Networks Open
The growing popularity of unmanned aerial vehicle (UAV) attracts significant research interests and applications including low-altitude and airborne vehicles. Since there is no declared spectrum allocated to UAV communications, opportunist…
View article: Target Localization in Multipath Propagation Environment Using Dictionary-Based Sparse Representation
Target Localization in Multipath Propagation Environment Using Dictionary-Based Sparse Representation Open
This paper addresses the target localization problem in complex multipath propagation environment for three-dimensional (3-D) radar systems. Firstly, an approach based on the singular value decomposition (SVD) technique is developed to red…
View article: Weighted Block Sparse Recovery Algorithm for High Resolution DOA Estimation with Unknown Mutual Coupling
Weighted Block Sparse Recovery Algorithm for High Resolution DOA Estimation with Unknown Mutual Coupling Open
Based on weighted block sparse recovery, a high resolution direction-of-arrival (DOA) estimation algorithm is proposed for data with unknown mutual coupling. In our proposed method, a new block representation model based on the array covar…
View article: Tensor-Based Angle Estimation Approach for Strictly Noncircular Sources with Unknown Mutual Coupling in Bistatic MIMO Radar
Tensor-Based Angle Estimation Approach for Strictly Noncircular Sources with Unknown Mutual Coupling in Bistatic MIMO Radar Open
In the paper, the estimation of joint direction-of-departure (DOD) and direction-of-arrival (DOA) for strictly noncircular targets in multiple-input multiple-output (MIMO) radar with unknown mutual coupling is considered, and a tensor-base…
View article: [Front matter]
[Front matter] Open
Dear Friends & Colleagues,After successful completion of the first conference in 2017, we proudly present the second International Conference on Signals and Systems (ICSIGSYS) held on May 1 st -3 rd 2018 in Bali, Indonesia.It is our pleasu…
View article: Robust Angle Estimation for MIMO Radar with the Coexistence of Mutual Coupling and Colored Noise
Robust Angle Estimation for MIMO Radar with the Coexistence of Mutual Coupling and Colored Noise Open
This paper deals with joint estimation of direction-of-departure (DOD) and direction-of- arrival (DOA) in bistatic multiple-input multiple-output (MIMO) radar with the coexistence of unknown mutual coupling and spatial colored noise by dev…
View article: TDCS-IDMA System for Cognitive Radio Networks With Cloud
TDCS-IDMA System for Cognitive Radio Networks With Cloud Open
Cognitive radio (CR) is a novel technology for improving the utilization of radio electromagnetic spectrum. Recently, a new model called cognitive radio networks with cloud (CRNC) has been proposed to eliminate the constraints (pertinent t…
View article: A Range-Doppler-Angle Estimation Method for Passive Bistatic Radar
A Range-Doppler-Angle Estimation Method for Passive Bistatic Radar Open
In this paper, an effective target detection and localization method is proposed for a passive bistatic radar (PBR) system. The PBR system consists of a commercial FM radio station, which is a non-cooperative illuminator of opportunity (IO…
View article: Structure of non‐maximally decimated filter bank derived by MSFGs
Structure of non‐maximally decimated filter bank derived by MSFGs Open
Practical applications in digital communication need non‐maximally decimated filter banks to provide oversampled baseband signals for other necessary operations. The non‐maximally decimated filter banks allow the required prototype filter …
View article: Direction of Arrival Estimation for MIMO Radar via Unitary Nuclear Norm Minimization
Direction of Arrival Estimation for MIMO Radar via Unitary Nuclear Norm Minimization Open
In this paper, we consider the direction of arrival (DOA) estimation issue of noncircular (NC) source in multiple-input multiple-output (MIMO) radar and propose a novel unitary nuclear norm minimization (UNNM) algorithm. In the proposed me…
View article: On Practical Issues of Electric Network Frequency Based Audio Forensics
On Practical Issues of Electric Network Frequency Based Audio Forensics Open
The transmission frequency of power grids, i.e., electric network frequency (ENF), has become a common criterion to authenticate audio recordings during the past decade, drawing much attention from both the academic researchers and law enf…
View article: Variational Bayesian Sparse Signal Recovery With LSM Prior
Variational Bayesian Sparse Signal Recovery With LSM Prior Open
This paper presents a new sparse signal recovery algorithm using variational Bayesian inference based on the Laplace approximation. The sparse signal is modeled as the Laplacian scale mixture (LSM) prior. The Bayesian inference with the La…
View article: The Race to Improve Radar Imagery: An overview of recent progress in statistical sparsity-based techniques
The Race to Improve Radar Imagery: An overview of recent progress in statistical sparsity-based techniques Open
The exploitation of sparsity has significantly advanced the field of radar imaging over the last few decades, leading to substantial improvements in the resolution and quality of the processed images. More recent developments in compressed…
View article: Logarithmic Laplacian Prior Based Bayesian Inverse Synthetic Aperture Radar Imaging
Logarithmic Laplacian Prior Based Bayesian Inverse Synthetic Aperture Radar Imaging Open
This paper presents a novel Inverse Synthetic Aperture Radar Imaging (ISAR) algorithm based on a new sparse prior, known as the logarithmic Laplacian prior. The newly proposed logarithmic Laplacian prior has a narrower main lobe with highe…
View article: Finite‐length extrinsic information transfer analysis and design of protograph low‐density parity‐check codes for ultra‐high‐density magnetic recording channels
Finite‐length extrinsic information transfer analysis and design of protograph low‐density parity‐check codes for ultra‐high‐density magnetic recording channels Open
The authors study the performance of protograph low‐density parity‐check (LDPC) codes over two‐dimensional (2D) intersymbol interference (ISI) channels in this study. To begin with, the authors propose a modified version of finite‐length (…
View article: When Compressive Sensing Meets Data Hiding
When Compressive Sensing Meets Data Hiding Open
We present a novel framework of performing multimedia data hiding using an over-complete dictionary, which brings compressive sensing to the application of data hiding. Unlike the conventional orthonormal full-space dictionary, the over-co…
View article: The Left Fusiform Gyrus is a Critical Region Contributing to the Core Behavioral Profile of Semantic Dementia
The Left Fusiform Gyrus is a Critical Region Contributing to the Core Behavioral Profile of Semantic Dementia Open
Given that extensive cerebral regions are co-atrophic in semantic dementia (SD), it is not yet known which critical regions (SD-semantic-critical regions) are really responsible for the semantic deficits of SD. To identify the SD-semantic-…
View article: Motion Error Compensation for Quad-rotor Miniature Unmanned Aerial Vehicle SAR Imaging
Motion Error Compensation for Quad-rotor Miniature Unmanned Aerial Vehicle SAR Imaging Open
Quad-rotor miniature unmanned aerial vehicle (QMUAV) synthetic aperture radar (SAR) is an ultra-small
airborne SAR system. Because of lowing flying altitude and small size constraints, the motion errors of
QMUAV-SAR are very complica…
View article: Underdetermined Separation of Speech Mixture Based on Sparse Bayesian Learning
Underdetermined Separation of Speech Mixture Based on Sparse Bayesian Learning Open
This paper describes a novel algorithm for underdetermined speech separation problem based on compressed sensing which is an emerging technique for efficient data reconstruction. The proposed algorithm consists of two steps. The unknown mi…