Results 1 to 10 of about 100,909 (95)

Hybrid Matched Filter Detection Spectrum Sensing [PDF]

IEEE Access, 2021
The radio frequency spectrum is getting more congested day by day due to the growth of wireless devices, applications, and the arrival of fifth generation (5G) mobile communications.
Antonio Brito, Pedro Sebastiao, Fernando J. Velez   +2 more
doaj   +5 more sources

HybNet: A Hybrid Deep Learning-Matched Filter Approach for IoT Signal Detection

IEEE Transactions on Machine Learning in Communications and Networking, 2023
Random access schemes are widely used in IoT wireless access networks. They enable a reduced complexity and overcome power consumption constraints. Nevertheless, random access results in high packet losses which are caused by overlapping transmissions ...
Kosta Dakic, Bassel Al Homssi, Margaret Lech, Akram Al-Hourani   +3 more
doaj   +3 more sources

HYBRID APPROACH FOR SECURELY MAXIMIZING SPECTRUM UTILIZATION IN COGNITIVE RADIO NETWORKS: MATCHED FILTER AND SALP SWARM ALGORITHM-OPTIMIZED ENERGY DETECTION [PDF]

Proceedings on Engineering Sciences
The research paper proposes a novel approach for signal detection in cognitive radio networks, aiming to improve spectrum utilization and overall performance.
Imaduddin , Komal Prasad Kanojia , Bharti Chourasia   +2 more
doaj   +2 more sources

Improvement of spectrum sensing performance in cognitive radio using modified hybrid sensing method

Acta Polytechnica, 2022
Cognitive radio (CR) is a wireless technology for increasing the bandwidth usage. Spectrum sensing (SS) is the first step in CR. There are three basic techniques in SS, energy detection (ED), matched filter (MF), and cyclostationary detection (CFD ...
Hadeel S. Abed, Hikmat N. Abdullah
doaj   +1 more source

A Novel Hybrid Retinal Blood Vessel Segmentation Algorithm for Enlarging the Measuring Range of Dual-Wavelength Retinal Oximetry

Photonics, 2023
The non-invasive measurement of hemoglobin oxygen saturation (SO2) in retinal vessels is based on spectrophotometry and the absorption spectral characteristics of the tissue.
Yongli Xian, Guangxin Zhao, Congzheng Wang, Xuejian Chen, Yun Dai   +4 more
doaj   +1 more source

Integrated Sensing and Communication via Orthogonal Time Frequency Space Signaling with Hybrid Message Passing Detection and Fractional Parameter Estimation

Sensors, 2023
For the orthogonal time frequency space (OTFS) modulation, we generally multiplex symbols on a new type of carrier waveform in the delay-Doppler (DD) domain.
Ji Zhang, Leqi Cai, Huanyou Liu
doaj   +1 more source

An Hybrid Integration Method-Based Track-before-Detect for High-Speed and High-Maneuvering Targets in Ubiquitous Radar

Remote Sensing, 2023
Due to the limited transmission gain of ubiquitous radar systems, it has become necessary to use a long-time coherent integration method for range-Doppler (RD) analysis.
Xiangyu Peng, Qiang Song, Yue Zhang, Wei Wang   +3 more
doaj   +1 more source

High spatial resolution imaging of methane and other trace gases with the airborne Hyperspectral Thermal Emission Spectrometer (HyTES) [PDF]

Atmospheric Measurement Techniques, 2016
Currently large uncertainties exist associated with the attribution and quantification of fugitive emissions of criteria pollutants and greenhouse gases such as methane across large regions and key economic sectors.
G. C. Hulley, R. M. Duren, F. M. Hopkins, S. J. Hook, N. Vance, P. Guillevic, W. R. Johnson, B. T. Eng, J. M. Mihaly, V. M. Jovanovic, S. L. Chazanoff, Z. K. Staniszewski, L. Kuai, J. Worden, C. Frankenberg, G. Rivera, A. D. Aubrey, C. E. Miller, N. K. Malakar, J. M. Sánchez Tomás, K. T. Holmes   +20 more
doaj   +1 more source

Efficient Hybrid Iterative Method for Signal Detection in Massive MIMO Uplink System over AWGN Channel

Journal of Engineering, 2022
Massive multiple input multiple output (massive MIMO) is a key technology in fifth-generation (5G) and beyond fifth-generation (B5G) networks. It improves performance metrics such as gain, energy efficiency, spectral efficiency, and bit error rate (BER).
Zelalem Melak Gebeyehu, Ram Sewak Singh, Satyasis Mishra, Davinder Singh Rathee   +3 more
doaj   +1 more source

Keyframe-based monocular SLAM: design, survey, and future directions [PDF]

, 2017
Extensive research in the field of monocular SLAM for the past fifteen years has yielded workable systems that found their way into various applications in robotics and augmented reality.
Asmar, Daniel, Shammas, Elie, Younes, Georges, Zelek, John   +3 more
core   +3 more sources