Results 21 to 30 of about 54,708 (232)
Error propagation in polarimetric demodulation [PDF]
, 2008 The polarization analysis of the light is typically carried out using modulation schemes. The light of unknown polarization state is passed through a set of known modulation optics and a detector is used to measure the total intensity passing the system.
Collados, M., Ramos, A. Asensio
core +1 more source
Waveform diversity design for an MIMO SAR system based on an OFDM chirp
The Journal of Engineering, 2019 Multiple-input multiple-output (MIMO) synthetic aperture radar (SAR) waveform diversity design has drawn extensive attention since it has a great potential in remote sensing.
Yujiu Zhao +4 more
doaj +1 more source
Dynamic Phase Demodulation Algorithm for Phase-Sensitive OTDR With Direct Detection
IEEE Access, 2020 A dynamic phase demodulation algorithm for direct detection Φ-OTDR is proposed and experimentally demonstrated. It offers a way for single channel direct detection Φ-OTDR, which is the simplest and most cost-effective structure, to realize ...
Yi Shi +4 more
doaj +1 more source
Complex-Valued Neural Networks for Noncoherent Demodulation
IEEE Open Journal of the Communications Society, 2020 Noncoherent demodulation is an attractive choice for many wireless communication systems. It requires minimal protocol overhead for carrier synchronization, and it is robust to radio impairments commonly found in low-cost transceivers.
Paul E. Gorday +2 more
doaj +1 more source
Refractometric Properties of a TFBG Sensor Demodulated Using α-Shape Modified Delaunay Triangulation
Optics, 2021 In our previous research, a novel demodulation technique based on α-shape Delaunay triangulation (D-T) was developed to obtain the refractive index of the medium surrounding the optical fibre using the envelope of the cladding peaks from the spectrum of ...
Luigi Fazzi, Roger M. Groves
doaj +1 more source
DeepDeMod: BPSK Demodulation Using Deep Learning Over Software-Defined Radio
IEEE Access, 2022 In wireless communication, signal demodulation under non-ideal conditions is one of the important research topic. In this paper, a novel non-coherent binary phase shift keying demodulator based on deep neural network, namely DeepDeMod, is proposed.
Arhum Ahmad +3 more
doaj +1 more source
Detection of hydraulic phenomena in francis turbines with different sensors [PDF]
, 2019 Nowadays, hydropower is demanded to provide flexibility and fast response into the electrical grid in order to compensate the non-constant electricity generation of other renewable sources.
Egusquiza Estévez, Eduard +4 more
core +2 more sources
The demodulated band transform [PDF]
Journal of Neuroscience Methods, 2016 Background: Windowed Fourier decompositions (WFD) are widely used in measuring stationary and non-stationary spectral phenomena and in describing pairwise relationships among multiple signals. Although a variety of WFDs see frequent application in electrophysiological research, including the short-time Fourier transform, continuous wavelets, band-pass ...
Christopher K. Kovach, Phillip E. Gander
openaire +3 more sources
Spatial-Wavelength Multiplexing Error-Controlled Photonic Analog Computing System. [PDF]
Adv Sci (Weinh)A novel photonic integrated circuit prototype implementing the concept of general‐purpose analog computing and demonstrate its capability in radio frequency applications. The chip features a multichannel architecture and performs fully optical analog computation with frequency‐domain parallel processing. An FPGA‐based error‐correction algorithm aims to
Zhu T +15 more
europepmc +2 more sources
Design of communication system for ocean expendable sound velocity meter(XSV)
Dianzi Jishu Yingyong, 2019 A communication system based on the ocean expendable sound velocity(XSV) was designed and implemented. The 2DPSK signal was used as the transmission signal, and the single double-stranded enameled wire was used as the communication channel.
Fan Hanbai +3 more
doaj +1 more source