Results 41 to 50 of about 404,067 (315)

Adaptive Quantum Measurements of a Continuously Varying Phase [PDF]

open access: yes, 2001
We analyze the problem of quantum-limited estimation of a stochastically varying phase of a continuous beam (rather than a pulse) of the electromagnetic field.
A.S. Holevo   +9 more
core   +2 more sources

Mitigation of the Effects of Unknown Sea Clutter Statistics by Using Radial Basis Function Network [PDF]

open access: yesRadioengineering, 2020
In this paper, we investigate feasibility of employing Radial Basis Function (RBF) network into non-coherent detection process, for detection of targets embedded in sea clutter of unknown statistics. We particularly have in mind Croatian part of Adriatic
B. Vondra, D. Bonefacić
doaj  

Tracking Small Wildlife With Minimal-Complexity Radio Frequency Transmitters: Near-Optimal Detection

open access: yesIEEE Access, 2023
In a range of IoT applications, edge nodes require minimal size, mass, and power/energy use. When node complexity is severely constrained, the burden of detection falls to the receiving system.
Michael W. Shafer, Paul G. Flikkema
doaj   +1 more source

A coherent triggered search for single spin compact binary coalescences in gravitational wave data [PDF]

open access: yes, 2011
In this paper we present a method for conducting a coherent search for single spin compact binary coalescences in gravitational wave data and compare this search to the existing coincidence method for single spin searches.
Abadie J   +10 more
core   +4 more sources

Production of superpositions of coherent states in traveling optical fields with inefficient photon detection [PDF]

open access: yes, 2005
We develop an all-optical scheme to generate superpositions of macroscopically distinguishable coherent states in traveling optical fields. It non-deterministically distills coherent state superpositions (CSSs) with large amplitudes out of CSSs with ...
A. P. Lund   +7 more
core   +2 more sources

Near-optimal coherent state discrimination via continuously labelled non-Gaussian measurements [PDF]

open access: yesQuantum
Quantum state discrimination plays a central role in quantum information and communication. For the discrimination of optical quantum states, the two most widely adopted measurement techniques are photon detection, which produces discrete outcomes, and ...
James Moran   +2 more
doaj   +1 more source

Non-Coherent Open-Loop MIMO Communications Over Temporally-Correlated Channels

open access: yesIEEE Access, 2016
This paper investigates the use of non-coherent communication techniques for open-loop transmission over temporally-correlated Rayleigh-fading MIMO channels.
Jorge Cabrejas   +6 more
doaj   +1 more source

Suppression of Mode Partition Noise in FP Laser by Frequency Modulation Non-Coherent Detection

open access: yesIEEE Photonics Journal, 2022
We propose a frequency modulation (FM) non-coherent detection (NCD) scheme, attempting to suppress the mode partition noise (MPN) in fiber-optic communication systems with the Fabry-Perot (FP) semiconductor laser as the light source. The system comprises
Lei Xin, Jia Zhao, Xun Li
doaj   +1 more source

Weak signal acquisition enhancement in software GPS receivers – Pre-filtering combined post-correlation detection approach

open access: yesApplied Computing and Informatics, 2017
The Civilian Global Positioning System (GPS) receivers often encounter problems of interference and noise which degrade the receiver performance.
G. Arul Elango   +2 more
doaj   +1 more source

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