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This letter introduces a structured high-rank tensor approach for estimating sub-6G uplink channels in multi-user multiple-input and multiple-output (MU-MIMO) systems. To tackle the difficulty of channel estimation in sub-6G bands with…

Signal Processing · Electrical Eng. & Systems 2024-09-04 Panqi Chen , Lei Cheng

This paper explores high-altitude platform station (HAPS) systems enabled by integrated sensing and communication (ISAC), in which a HAPS simultaneously transmits communication signals and synthetic aperture radar (SAR) imaging signals to…

Signal Processing · Electrical Eng. & Systems 2025-12-04 Xue Zhang , Bang Huang , Mohamed-Slim Alouini

Currently, numerous remote sensing satellites provide a huge volume of diverse earth observation data. As these data show different features regarding resolution, accuracy, coverage, and spectral imaging ability, fusion techniques are…

Image and Video Processing · Electrical Eng. & Systems 2018-10-29 Hossein Bagheri , Michael Schmitt , Pablo d'Angelo , Xiao Xiang Zhu

Multilook processing is a widely used speckle reduction approach in synthetic aperture radar (SAR) imaging. Conventionally, it is achieved by incoherently summing of some independent low-resolution images formulated from overlapping…

Information Theory · Computer Science 2013-10-29 Jian Fang , Zongben Xu , Bingchen Zhang , Wen Hong , Yirong Wu

This paper presents a multi-dimensional computational method to predict the spatial variation data inside and across multiple dies of a wafer. This technique is based on tensor computation. A tensor is a high-dimensional generalization of a…

Machine Learning · Computer Science 2019-01-04 Jiali Luan , Zheng Zhang

Tensor ring (TR) decomposition has recently received increased attention due to its superior expressive performance for high-order tensors. However, the applicability of traditional TR decomposition algorithms to real-world applications is…

Machine Learning · Computer Science 2023-05-17 Yicong He , George K. Atia

General multivariate distributions are notoriously expensive to sample from, particularly the high-dimensional posterior distributions in PDE-constrained inverse problems. This paper develops a sampler for arbitrary continuous multivariate…

Numerical Analysis · Mathematics 2019-07-05 Sergey Dolgov , Karim Anaya-Izquierdo , Colin Fox , Robert Scheichl

Synthetic aperture radar tomography (TomoSAR) has been extensively employed in 3-D reconstruction in dense urban areas using high-resolution SAR acquisitions. Compressive sensing (CS)-based algorithms are generally considered as the state…

Signal Processing · Electrical Eng. & Systems 2022-05-04 Kun Qian , Yuanyuan Wang , Yilei Shi , Xiao Xiang Zhu

Surface displacements associated with the average subsidence due to hydrocarbon exploitation in southwest of Iran which has a long history in oil production, can lead to significant damages to surface and subsurface structures, and requires…

Image and Video Processing · Electrical Eng. & Systems 2021-03-23 Sarah Narges Fatholahi , Hongjie He , Lanying Wang , Awase Syed , Jonathan Li

Polarimetric synthetic aperture radar (PolSAR) image classification has been investigated vigorously in various remote sensing applications. However, it is still a challenging task nowadays. One significant barrier lies in the speckle…

Computer Vision and Pattern Recognition · Computer Science 2020-09-15 Haixia Bi , Jing Yao , Zhiqiang Wei , Danfeng Hong , Jocelyn Chanussot

Modern technological advances have enabled an unprecedented amount of structured data with complex temporal dependence, urging the need for new methods to efficiently model and forecast high-dimensional tensor-valued time series. This paper…

Methodology · Statistics 2023-09-28 Di Wang , Yao Zheng , Guodong Li

Automotive targets undergoing turns in road junctions offer large synthetic apertures over short dwell times to automotive radars that can be exploited for obtaining fine cross-range resolution. Likewise, the wide bandwidths of the…

Signal Processing · Electrical Eng. & Systems 2022-09-28 Shobha Sundar Ram

Channel estimation is not only essential to highly reliable data transmission and massive device access but also an important component of the integrated sensing and communication (ISAC) in the sixth-generation (6G) mobile communication…

Signal Processing · Electrical Eng. & Systems 2025-06-10 Wanyuan Cai , Xiaoping Jin , Youming Li , Menglei Sheng , Mingjun Huang , Qinke Qi , Qiang Guo

The 3GPP suggests to combine dual polarized (DP) antenna arrays with the double directional (DD) channel model for downlink channel estimation. This combination strikes a good balance between high-capacity communications and parsimonious…

Signal Processing · Electrical Eng. & Systems 2018-03-13 Cheng Qian , Xiao Fu , Nicholas D. Sidiropoulos , Ye Yang

Modern soil mapping is characterised by the need to interpolate samples of geostatistical response observations and the availability of relatively large numbers of environmental characteristics for consideration as covariates to aid this…

Applications · Statistics 2016-09-09 Benjamin R. Fitzpatrick , David W. Lamb , Kerrie Mengersen

Using the matrix product state (MPS) representation of the recently proposed tensor ring decompositions, in this paper we propose a tensor completion algorithm, which is an alternating minimization algorithm that alternates over the factors…

Machine Learning · Computer Science 2017-07-27 Wenqi Wang , Vaneet Aggarwal , Shuchin Aeron

For 3D Synthetic Aperture Radar (SAR) imaging, one typical approach is to achieve the cross-track 1D focusing for each range-azimuth pixel after obtaining a stack of 2D complex-valued images. The cross-track focusing is the main difficulty…

Signal Processing · Electrical Eng. & Systems 2018-08-28 Jingkun Gao , Bin Deng , Yuliang Qin , Hongqiang Wang , Xiang Li

We propose a technique to develop (and localize in) topological maps from light detection and ranging (Lidar) data. Localizing an autonomous vehicle with respect to a reference map in real-time is crucial for its safe operation. Owing to…

Image and Video Processing · Electrical Eng. & Systems 2019-02-28 Sirisha Rambhatla , Nikos D. Sidiropoulos , Jarvis Haupt

The advancement of sensing technology has driven the widespread application of high-dimensional data. However, issues such as missing entries during acquisition and transmission negatively impact the accuracy of subsequent tasks. Tensor…

Image and Video Processing · Electrical Eng. & Systems 2025-04-09 Jie Yang , Chang Su , Yuhan Zhang , Jianjun Zhu , Jianli Wang

We propose a new approach within the versatile framework of convex optimization to solve the radio-interferometric wideband imaging problem. Our approach, dubbed HyperSARA, solves a sequence of weighted nuclear norm and l21 minimization…

Image and Video Processing · Electrical Eng. & Systems 2019-09-11 Abdullah Abdulaziz , Arwa Dabbech , Yves Wiaux