Results 11 to 20 of about 67,929 (263)
Reference frequencies comb generation for microwave photonics ADC with signal spectral-interval estimation [PDF]
ITM Web of Conferences, 2019 Formation of a reference frequency comb in a circuit comprising a highly stable continuous laser and an amplitude Mach- Zehnder modulator with two independent RF inputs working with large modulation index for use in a high-speed microwave photonics ADC ...
Kulagin Victor +4 more
doaj +2 more sources
Data in Brief, 2018 In the design of 5 G cellular communication to guarantee quality signal reception at every point within a coverage area, fundamental knowledge of the channel propagation characteristics is vital. A correct knowledge of electromagnetic wave propagation is
Oluyomi Simpson, Yichuang Sun
doaj +1 more source
New achievements on daily reference evapotranspiration forecasting: Potential assessment of multivariate signal decomposition schemes [PDF]
, 2023 Reference evapotranspiration (ETo) is a vital climate parameter affecting plants' water use. ETo can generate large deficits in soil moisture and runoff in different regions and seasons, leading to uncertainties in drought warning systems.
Mehdi Jamei +17 more
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Analysis of Noise Coupling From a Power Distribution Network to Signal Traces in High-Speed Multilayer Printed Circuit Boards [PDF]
, 2006 As layout density increases in highly integrated multilayer printed circuit boards (PCBs), the noise that exists in the power distribution network (PDN) is increasingly coupled to the signal traces, and precise modeling to describe the coupling ...
Baek, Seungyong +7 more
core +1 more source
Frontiers in Physiology, 2020 IntroductionRespiration frequency (RF) could be derived from the respiratory signals recorded by accelerometers which detect chest wall movements. The optimum direction of acceleration for accurate RF measurement is still uncertain. We aim to investigate
Stephen Hughes +2 more
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Online Calibration for LTE-Based Antenna Array System
International Journal of Antennas and Propagation, 2016 This paper presents a novel calibration method that equalizes the impulse responses of all the Radio Frequency (RF) modules of an antenna array system operating in Long-Term Evolution (LTE) evolved NodeB (eNB).
Kyunghoon Kim +5 more
doaj +1 more source
Engineering Proceedings, 2023 This paper presents an overview of the findings in the handover (HO) process performance within three routes in Quito, Ecuador. We used the Net-Monitor Software to gather information from one of the three national mobile operators.
Ramiro Espinosa +4 more
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A survey on RF mapping for indoor positioning
, 2015 2015 23rd Signal Processing and Communications Applications Conference, SIU 2015 -- 16 May 2015 through 19 May 2015 -- -- 113052In RF based indoor positioning systems, RF map is constructed by collecting Received Signal Strength (RSS) values from access
Bozkurt, Sinem +7 more
core +2 more sources
Improved Phase Stabilization of a Radio-Over-Fiber Link Under Large and Fine Delay Tuning
IEEE Photonics Journal, 2015 In this paper, we propose and demonstrate a phase-stabilized radio-frequency (RF) reference transmission scheme by actively stabilizing the optical path delay of the fiber link.
Feifei Yin +6 more
doaj +1 more source
IEEE Photonics Journal, 2019 We demonstrate a simultaneous frequency and time reference dissemination system over 80 km fiber with a phase-locked loop. The phase fluctuation of the transferred radio-frequency (RF) signal is compensated by adjusting the frequency of the ...
Xiaocheng Wang +7 more
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