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Vehicle-to-everything (V2X) is considered as one of the most important applications of future wireless communication networks. However, the Doppler effect caused by the vehicle mobility may seriously deteriorate the performance of the…

Information Theory · Computer Science 2020-03-04 Junqiang Cheng , Chenglu Jia , Hui Gao , Wenjun Xu , Zhisong Bie

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

This paper presents a phase-difference-based scheme for three-dimensional (3D) line-of-sight (LoS) user localization using a uniform planar array (UPA), applicable to both near-field and far-field regimes under the exact spherical-wave…

Signal Processing · Electrical Eng. & Systems 2026-04-02 Sergey Isaev , Nikola Zlatanov

With the rapid development of China's BeiDou Navigation Satellite System(BDS), the application of real-time precise point positioning (RTPPP) based on BDS has become an active research area in the field of Global Navigation Satellite System…

Signal Processing · Electrical Eng. & Systems 2020-11-30 Xiangchen Lu , Liang Chen , Nan Shen , Lei Wang , Zhenhang Jiao , Ruizhi Chen

Reliable and robust positioning of radio devices remains a challenging task due to multipath propagation, hardware impairments, and interference from other radio transmitters. A frequently overlooked but critical factor is the agent itself,…

Signal Processing · Electrical Eng. & Systems 2026-04-08 Hong Zhu , Alexander Venus , Erik Leitinger , Klaus Witrisal

Single camera 3D pose estimation is an ill-defined problem due to inherent ambiguities from depth, occlusion or keypoint noise. Multi-hypothesis pose estimation accounts for this uncertainty by providing multiple 3D poses consistent with…

Computer Vision and Pattern Recognition · Computer Science 2024-09-30 Paweł A. Pierzchlewicz , Caio O. da Silva , R. James Cotton , Fabian H. Sinz

Differential GPS, commonly referred as DGPS, is a well-known and very accurate localization system for many outdoor applications in particular for mobile outdoor robotics. The most common drawback of DGPS systems are the high costs for both…

Robotics · Computer Science 2023-06-23 Christian Blesing , Jan Finke , Sebastian Hoose , Anneliese Schweigert , Jonas Stenzel

Ray tracing (RT) simulations require accurate transmitter (TX) and receiver (RX) location information from real-world measurements to accurately characterize wireless propagation behavior in an environment. Such wireless propagation…

Signal Processing · Electrical Eng. & Systems 2025-09-16 Mingjun Ying , Peijie Ma , Dipankar Shakya , Theodore S. Rappaport

The massive multiple-input multiple-output (MIMO) transmission technology has recently attracted much attention in the non-geostationary, e.g., low earth orbit (LEO) satellite communication (SATCOM) systems since it can significantly…

Information Theory · Computer Science 2022-08-18 Li You , Xiaoyu Qiang , Ke-Xin Li , Christos G. Tsinos , Wenjin Wang , Xiqi Gao , Björn Ottersten

In recent years, there has been an increasing interest in false base station detection systems. Most of these rely on software that users download into their mobile phones. The software either performs an analysis of radio environment…

Cryptography and Security · Computer Science 2021-02-18 Prajwol Kumar Nakarmi , Mehmet Akif Ersoy , Elif Ustundag Soykan , Karl Norrman

Sensing emerges as a critical challenge in 6G networks, which require simultaneous communication and target sensing capabilities. State-of-the-art super-resolution techniques for the direction of arrival (DoA) estimation encounter…

Signal Processing · Electrical Eng. & Systems 2025-06-17 Murat Babek Salman , Emil Björnson

This paper investigates joint device identification, channel estimation, and signal detection for LEO satellite-enabled grant-free random access, where a multiple-input multipleoutput (MIMO) system with orthogonal time-frequency space…

Information Theory · Computer Science 2023-08-08 Boxiao Shen , Yongpeng Wu , Wenjun Zhang , Symeon Chatzinotas , Björn Ottersten

This paper proposes a new transmission strategy for the multiuser massive multiple-input multiple-output (MIMO) systems, including uplink/downlink channel estimation and user scheduling for data transmission. A discrete Fourier transform…

Information Theory · Computer Science 2016-01-12 Hongxiang Xie , Feifei Gao , Shun Zhang , Shi Jin

Position sensitive detectors (PSDs) offer possibility to track single active marker's two (or three) degrees of freedom (DoF) position with a high accuracy, while having a fast response time with high update frequency and low latency, all…

Robotics · Computer Science 2022-01-12 Young-Ho Kim , Ankur Kapoor , Tommaso Mansi , Ali Kamen

Sensor fusion of a MEMS IMU with a magnetometer is a popular system design, because such 9-DoF (degrees of freedom) systems are capable of achieving drift-free 3D orientation tracking. However, these systems are often vulnerable to ambient…

Signal Processing · Electrical Eng. & Systems 2018-02-14 Jacky C. K. Chow

3D human pose estimation has wide applications in fields such as intelligent surveillance, motion capture, and virtual reality. However, in real-world scenarios, issues such as occlusion, noise interference, and missing viewpoints can…

Computer Vision and Pattern Recognition · Computer Science 2025-02-25 Jianbin Jiao , Xina Cheng , Kailun Yang , Xiangrong Zhang , Licheng Jiao

In ultra-dense small cell networks, spatial multiplexing gain is a challenge because of the different propagation conditions. The channels associated with different transmitreceive pairs can be highly correlated due to the i) high…

Information Theory · Computer Science 2016-11-08 Amir H. Jafari , Vijay Venkateswaran , David Lopez-Perez , Jie Zhang

In low latency applications and in general, for overspread channels, channel delay spread is a large percentage of the transmission frame duration. In this paper, we consider OTFS in an overspread channel exhibiting a delay spread that…

Information Theory · Computer Science 2024-04-15 Preety Priya , Yi Hong , Emanuele Viterbo

The use of future communication systems for sensing offers the potential for a number of new applications. In this paper, we show that leveraging user data payloads in multi-node Orthogonal Frequency Division Multiple Access (OFDMA)…

Signal Processing · Electrical Eng. & Systems 2025-03-10 Marc Miranda , Sebastian Semper , Christian Schneider , Reiner Thomä , Giovanni Del Galdo

Despite recent advances in facial recognition, there remains a fundamental issue concerning degradations in performance due to substantial perspective (pose) differences between enrollment and query (probe) imagery. Therefore, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2025-05-15 J. Brennan Peace , Shuowen Hu , Benjamin S. Riggan