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An Overview of Cognitive Radio Technology and Its Applications in Civil Aviation [PDF]
Sensors, 2023 This paper provides an overview of cognitive radio technology and its applications in the field of civil aviation. Cognitive radio technology is a relatively new and emerging field that allows for dynamic spectrum access and efficient use of spectrum ...
Ruikang Zheng, Xuan Li, Yudong Chen
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Journal of Southwest Jiaotong University, 2020 Day by day, there is increasing demand for high data rates it causes lack of radio spectrum for the new emerging technologies in the area of wireless communications. So, it is, must use spectrum efficiently, i.e. proper spectrum management. Spectrum management is responsible for the spectrum deficiency.
Rajeshree Raut +2 more
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Polyphonic Sound Event Detection Using Temporal-Frequency Attention and Feature Space Attention
Sensors, 2022 The complexity of polyphonic sounds imposes numerous challenges on their classification. Especially in real life, polyphonic sound events have discontinuity and unstable time-frequency variations.
Ye Jin +4 more
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IEEE Signal Processing Magazine, 2008 Radio regulatory bodies are recognizing that the rigid spectrum assignment granting exclusive use to licensed services is highly inefficient, due to the high variability of the traffic statistics across time, space, and frequency. Recent Federal Communications Commission (FCC) measurements show that, in fact, the spectrum usage is typically ...
SCUTARI, GESUALDO +2 more
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LEO laser microwave hybrid inter-satellite routing strategy based on modified Q-routing algorithm
EURASIP Journal on Wireless Communications and Networking, 2022 Low earth orbit (LEO) satellite communication networks require huge load capacity and information processing speed to carry global communication traffic. Inter-satellite links and the on-board processing are the key technologies to achieve this goal, but
Fei Zheng +4 more
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EURASIP Journal on Wireless Communications and Networking, 2022 In fast-fading scattering environments such as high-speed rail and low-altitude communications, mobile communication systems need to quickly and robustly estimate and equalize fast-fading, time-varying channels.
Shuaijun Li +3 more
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A System for the Detection of Polyphonic Sound on a University Campus Based on CapsNet-RNN
IEEE Access, 2021 In recent decades, surveillance and home security systems based on video analysis have been proposed for the automatic detection of abnormal situations.
Liyan Luo +6 more
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Channel Polarization Scheme for Ocean Turbulence Channels in Underwater Visible Light Communication
Journal of Marine Science and Engineering, 2023 Underwater wireless communication technology plays an important role in marine environment monitoring and ecological protection. Underwater optical wireless communications (UWOCs) can currently achieve a transmission distance of hundreds of meters, and ...
Xiaoji Li +3 more
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Research on Orbital Angular Momentum Recognition Technology Based on a Convolutional Neural Network
Sensors, 2023 In underwater wireless optical communication (UWOC), a vortex beam carrying orbital angular momentum has a spatial spiral phase distribution, which provides spatial freedom for UWOC and, as a new information modulation dimension resource, it can greatly ...
Xiaoji Li +3 more
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IEEE Access, 2020 With the increasing demand for location awareness, indoor positioning has gradually become one of the research hotspots. In recent years the indoor positioning research field generally introduced dilution of precision (DOP) in the field of satellite ...
Mei Wang +4 more
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