Results 121 to 130 of about 109,277 (295)

Passive Non-line-of-sight Source Classification from Coherence Measurements [PDF]

, 2018
We demonstrate a passive imaging approach for identifying the shape and size of a secondary source using non-line-of-sight spatial coherence ...
Aristide Dogariu, Alexandru Tamasan, Andre Beckus, Zhean Shen, Sergey Sukhov, Dogariu, Aristide, Shen, Zhean, Sukhov, Sergey, George K. Atia, Beckus, Andre, Tamasan, Alexandru   +10 more
core   +1 more source

Machine learning-based intelligent localization technique for channel classification in massive MIMO

Discover Internet of Things
Multiple-input multiple-output (MIMO) technology has been widely adopted in wireless communications, which enables the simultaneous transmission of multiple data streams via multiple transmitting and receiving antennas.
Fadhil Ghrabat, Huiling Zhu, Jiangzhou Wang   +2 more
doaj   +1 more source

A Low-Complexity Solution for Optimizing Binary Intelligent Reflecting Surfaces towards Wireless Communication

Future Internet
Intelligent Reflecting Surfaces (IRSs) enable us to have a reconfigurable reflecting surface that can efficiently deflect the transmitted signal toward the receiver.
Santosh A. Janawade , Prabu Krishnan , Krishnamoorthy Kandasamy , Shashank S. Holla , Karthik Rao , Aditya Chandrasekar    +5 more
doaj   +1 more source

Non-Line-of-Sight localisation of a sound source

, 2009
This thesis proposes two acoustic localisation techniques that are accurate in Non-Line-of-Sight (NLoS) conditions and system implementation of the proposed techniques. Such conditions can cause positive bias errors, namely NLoS errors, in the measured Time-of-Arrivals (ToAs) of first-arrival signals received by microphones and thus reduce the ...
openaire   +2 more sources

Overcoming the Phase Discontinuity Problem in RIS Optimization: A Robust and Scalable Phase‐Aware Deep Regression Framework via Hybrid CNN–LSTM Architecture

Advanced Intelligent Systems, EarlyView.
The phase discontinuity problem—where the cyclic nature of phase angles causes catastrophic errors near the ±π boundary—is a fundamental obstacle in learning‐based reconfigurable intelligent surface (RIS) optimization. A phase‐aware hybrid CNN–LSTM framework resolves this by decomposing phase predictions into sine–cosine components, mapping circular ...
Seda Savaşçı Şen, Ali Çalhan, Murtaza Cicioğlu, Oğuzhan Demiryürek   +3 more
wiley   +1 more source

Assessing the contribution of multiply scattered radio waves to the impulse response of a wireless channel

Учёные записки Казанского университета: Серия Физико-математические науки
Using a three-dimensional topographic map of a typical microdistrict in Kazan, multipath radio wave propagation in mobile radio communication systems was modeled by the method of ray tracing.
R. F. Khaliullin, A. I. Sulimov
doaj   +1 more source

Small‐Scale Magnetic Peristaltic Soft Robot With Mobility and Transport Capabilities

Advanced Intelligent Systems, EarlyView.
This study introduces a miniature, untethered soft magnetic microrobot with peristaltic capabilities for both locomotion and cargo transport. Eight helically magnetized elastomeric strips deform under rotating fields (10–80 mT, 1–5 Hz), enabling movement across rods and lumina at up to 4.1 body lengths min‐¹.
Mohammad Hasan Dad Ansari, Linda Paternò, Chenjun Wu, Veronica Iacovacci, Arianna Menciassi   +4 more
wiley   +1 more source

AI‐Assisted IoT‐Enabled ECG Monitoring: Integrating Foundational and Generative AI Tools for Sustainable Smart Healthcare—Recent Trends

AI &Innovation, EarlyView.
ABSTRACT The rapid evolution of the Internet of Things (IoT) has significantly advanced the field of electrocardiogram (ECG) monitoring, enabling real‐time, remote, and patient‐centric cardiac care. This paper presents a comprehensive survey of AI assisted IoT‐based ECG monitoring systems, focusing on the integration of emerging technologies such as ...
Amrita Choudhury, Kandarpa Kumar Sarma, Lachit Dutta   +2 more
wiley   +1 more source

Polarization-Informed Non-Line-of-Sight Imaging on Diffuse Surfaces [PDF]

, 2019
Non-line-of-sight (NLOS) imaging has relevance in search \& rescue, medical imaging, remote sensing, and robotics. Although NLOS methods are maturing, NLOS with normal cameras generally requires special occluders in the scene to remove light ...
Hassan, Bakari
core  

Real-time scan-free non-line-of-sight imaging

APL Photonics
Real-time non-line-of-sight imaging is crucial for practical applications. Among existing methods, transient methods present the best visual reconstruction ability.
Wenjun Zhang, Enlai Guo, Shuo Zhu, Chenyang Huang, Lijia Chen, Lingfeng Liu, Lianfa Bai, Edmund Y. Lam, Jing Han   +8 more
doaj   +1 more source