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This study considers the joint location and velocity estimation of UE and scatterers in a three-dimensional mmWave CRAN architecture. Several existing works have achieved satisfactory results with neural networks (NNs) for localization.…

Information Theory · Computer Science 2021-03-23 Jie Yang , Shi Jin , Chao-Kai Wen , Jiajia Guo , Michail Matthaiou , Bo Gao

In this paper, we apply angle-domain Doppler compensation for high-mobility wideband massive multi-input multi-output (MIMO) uplink transmission. The time-varying multipath channel is considered between high-speed terminal and static base…

Information Theory · Computer Science 2018-07-20 Wei Guo , Weile Zhang , Pengcheng Mu , Feifei Gao , Hai Lin

Estimating the location where an image was taken based solely on the contents of the image is a challenging task, even for humans, as properly labeling an image in such a fashion relies heavily on contextual information, and is not as…

Computer Vision and Pattern Recognition · Computer Science 2017-12-29 Jesse M. Johns , Jeremiah Rounds , Michael J. Henry

Full 3D human pose reconstruction is a critical enabler for extended reality (XR) applications in future sixth generation (6G) networks, supporting immersive interactions in gaming, virtual meetings, and remote collaboration. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-10 Nguyen Quang Hieu , Dinh Thai Hoang , Diep N. Nguyen , Mohammad Abu Alsheikh , Carlos C. N. Kuhn , Yibeltal F. Alem , Ibrahim Radwan

Affine Frequency Division Multiplexing (AFDM), a new chirp-based multicarrier waveform for high mobility communications, is introduced here. AFDM is based on discrete affine Fourier transform (DAFT), a generalization of discrete Fourier…

Information Theory · Computer Science 2022-05-04 Ali Bemani , Nassar Ksairi , Marios Kountouris

Distributed phased arrays have recently garnered interest in applications such as satellite communications and high-resolution remote sensing. High-performance coherent distributed operations such as distributed beamforming are dependent on…

Signal Processing · Electrical Eng. & Systems 2024-11-19 Matthew J. Dula , Naim Shandi , Jeffrey A. Nanzer

Next big commercial applications of drones require to fly the drone beyond the visual line of sight (BVLOS). This inevitable ability to fly BVLOS will also necessitate the ability to keep track of the drone's location, in order to ensure…

Signal Processing · Electrical Eng. & Systems 2019-05-08 Priyanka Sinha , Yavuz Yapici , Ismail Guvenc

Extremely large-scale antenna array (ELAA) is a key candidate technology for the sixth generation (6G) mobile networks. Nevertheless, using substantial numbers of antennas to transmit high-frequency signals in ELAA systems significantly…

Signal Processing · Electrical Eng. & Systems 2025-01-23 Mengzhen Liu , Ming Li , Rang Liu , Qian Liu

This paper considers human activity classification for an indoor radar system. Human motions generate nonstationary radar returns which represent Doppler and micro-Doppler signals. The time-frequency (TF) analysis of micro-Doppler signals…

Signal Processing · Electrical Eng. & Systems 2021-04-02 Patrick A. Schooley , Syed A. Hamza

Covert communication in wireless networks ensures that transmissions remain undetectable to adversaries, making it a potential enabler for privacy and security in sensitive applications. However, to meet the high performance and…

Signal Processing · Electrical Eng. & Systems 2024-11-26 Fatemeh Lotfi , Stefan Roth , Anas Chaaban , Aydin Sezgin

Estimating the 3D pose of an object is a challenging task that can be considered within augmented reality or robotic applications. In this paper, we propose a novel approach to perform 6 DoF object pose estimation from a single RGB-D image.…

Computer Vision and Pattern Recognition · Computer Science 2022-05-31 Mathieu Gonzalez , Amine Kacete , Albert Murienne , Eric Marchand

This work considers the three-dimensional (3-D) positioning problem in a Terahertz (THz) system enabled by a modular extra-large (XL) array with sub-connected architecture. Our purpose is to estimate the Cartesian Coordinates of multiple…

Signal Processing · Electrical Eng. & Systems 2025-04-21 Yang Zhang , Ruidong Li , Cunhua Pan , Hong Ren , Tuo Wu , Changhong Wang

In the emerging high mobility Vehicle-to-Everything (V2X) communications using millimeter Wave (mmWave) and sub-THz, Multiple-Input Multiple-Output (MIMO) channel estimation is an extremely challenging task. At mmWaves/sub-THz frequencies,…

We propose a method for estimating the 3D pose for the camera of a mobile device in outdoor conditions, using only an untextured 2D model. Previous methods compute only a relative pose using a SLAM algorithm, or require many registered…

Computer Vision and Pattern Recognition · Computer Science 2015-03-19 Clemens Arth , Christian Pirchheim , Jonathan Ventura , Vincent Lepetit

The recent trend for extremely massive antenna arrays and high frequencies facilitates localization and sensing, offering increased angular and range resolution. In this letter, we focus on the emerging technology of Dynamic Metasurface…

Signal Processing · Electrical Eng. & Systems 2025-02-25 Ioannis Gavras , George C. Alexandropoulos

In this paper we show that the eigenfunctions can be found exactly for systems whose delay-Doppler spread function is concentrated along a straight line and they can be found in approximate sense for systems having a spread function…

Information Theory · Computer Science 2015-10-15 Sergio Barbarossa , Mikhail Tsitsvero

Radio Frequency Identification (RFID) is a widely used technology for identifying and locating objects equipped with low-cost RFID transponders (tags). UHF (Ultra High Frequency) RFID operates in frequency bands around 900 MHz and supports…

Signal Processing · Electrical Eng. & Systems 2025-11-26 Clemens Korn , Joerg Robert

Energy-harvesting (EH) and wireless power transfer in cooperative relaying networks have recently attracted a considerable amount of research attention. Most of the existing work on this topic however focuses on Rayleigh fading channels,…

Signal Processing · Electrical Eng. & Systems 2018-07-17 Khaled M. Rabie , Bamidele Adebisi , Mohamed-Slim Alouini

Extremely large-scale multiple-input multiple-output (XL-MIMO) is regarded as a promising technology for next-generation communication systems. However, this will expand the near-field (NF) range, rendering more users more likely to be…

Signal Processing · Electrical Eng. & Systems 2025-07-01 Zihang Ding , Jianhua Zhang , Changsheng You , Pan Tang , Hongbo Xing , Zhiqiang Yuan , Jie Meng , Guangyi Liu

This paper proposes a novel preamble design and detection method for multiuser asynchronous massive MIMO LoRa networks. Unlike existing works, which only consider the preamble detection for a single target end devices (ED), we proposed to…

Signal Processing · Electrical Eng. & Systems 2025-12-22 The Khai Nguyen , Ebrahim Bedeer
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