Results 11 to 20 of about 879,921 (312)

Analysis of the Impact of Detection Threshold Adjustments and Noise Uncertainty on Energy Detection Performance in MIMO-OFDM Cognitive Radio Systems [PDF]

open access: yesSensors, 2022
Due to the capability of the effective usage of the radio frequency spectrum, a concept known as cognitive radio has undergone a broad exploitation in real implementations.
Josip Lorincz   +2 more
doaj   +2 more sources

Accurate and Practical Energy Detection over α-μ Fading Channels [PDF]

open access: yesSensors, 2020
In this study, a novel and exact closed-form expression for detection probability of energy detection (ED) in terms of Meijer’s G-function over α-μ generalized fading channels was derived.
Kaitian Cao, Ping Qian, Jing An, Li Wang
doaj   +2 more sources

On Optimal Cooperative Sensing with Energy Detection in Cognitive Radio [PDF]

open access: yesSensors, 2017
In this paper, we propose an optimal cooperative sensing technique for cognitive radio to maximize sensing performance based on energy detection. In most spectrum sensing research, many cooperation methods have been proposed to overcome the sensitivity ...
Sunghwan Bae, Jaewoo So, Hongseok Kim
doaj   +2 more sources

Machine Learning for LTE Energy Detection Performance Improvement [PDF]

open access: yesSensors, 2019
The growing number of radio communication devices and limited spectrum resources are drivers for the development of new techniques of dynamic spectrum access and spectrum sharing.
Małgorzata Wasilewska, Hanna Bogucka
doaj   +2 more sources

Implementation Issues of Adaptive Energy Detection in Heterogeneous Wireless Networks [PDF]

open access: yesSensors, 2017
Spectrum sensing (SS) enables the coexistence of non-coordinated heterogeneous wireless systems operating in the same band. Due to its computational simplicity, energy detection (ED) technique has been widespread employed in SS applications; nonetheless,
Iker Sobron   +5 more
doaj   +2 more sources

Self-Tuning of Signal Detection Level for Energy Detection-Based Carrier Sense in Low-Power Wide-Area Networks [PDF]

open access: yesSensors
Carrier sense allows end devices to improve the communication quality through autonomous decentralization by consuming power. In particular, energy detection-based carrier sense can improve communication quality compared with peak detection-based carrier
Shusuke Narieda, Takeo Fujii
doaj   +2 more sources

Energy Detection for M-QAM Signals [PDF]

open access: yesIEEE Access, 2021
Accurate threshold setting for energy detector is important for example in dynamic spectrum access. This requires accurate statistical distribution models of the observed energy. In this paper, we consider energy detection (ED) for $M$ -ary quadrature amplitude modulation (QAM) signals.
Shun Ishihara   +2 more
openaire   +4 more sources

Development of a Cold Cathode Electron Source Based on Gold Cathode MCP [PDF]

open access: yesZhipu Xuebao, 2023
In this study, cold cathode electron sources using deep-UV photons to excite gold cathode and microchannel plate (MCP) were employed to configure a high-quality electron impact ion source (EI) in a mass spectrometry.
YAO Wen-jing1   +6 more
doaj   +1 more source

Design of improved four-coil structure with high uniformity and effective coverage rate

open access: yesHeliyon, 2023
Helmholtz coils have extensive applications in biological medicine, aerospace, and other industries depending on the simple structure and miraculous magnetic field characteristics.
Xuehua Zhu   +4 more
doaj   +1 more source

Predictive control of permanent magnet synchronous motor based on Super‐Twisting sliding mode

open access: yesEnergy Science & Engineering, 2023
To improve the anti‐interference ability and response speed of the permanent magnet synchronous motor control system and the problem of excessive chattering when the speed loop of the system is controlled by fast second‐order Super‐Twisting sliding mode ...
Jun Hu   +3 more
doaj   +1 more source

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