Results 161 to 170 of about 459,320 (213)
PPG-basis: A python-based toolbox for fast photoplethysmogram decomposition and reconstruction. [PDF]
Comput Methods Programs BiomedPutcha A +7 more
europepmc +1 more source
Beyond 350 GHz: Single-channel 112 Gbps photonic wireless transmission at 560 GHz using soliton microcombs. [PDF]
Commun EngTokizane Y +14 more
europepmc +1 more source
Oscillator phase noise: a tutorial [PDF]
IEEE Journal of Solid-State Circuits, 2000 Linear time-invariant (LTI) phase noise theories provide important qualitative design insights but are limited in their quantitative predictive power. Part of the difficulty is that device noise undergoes multiple frequency translations to become oscillator phase noise.
Ali Hajimiri
exaly +4 more sources
Noise in phase shifting interferometry [PDF]
Optics Express, 2009 We present a theoretical analysis to estimate the amount of phase noise due to noisy interferograms in Phase Shifting Interferometry (PSI). We also analyze the fact that linear filtering transforms corrupting multiplicative noise in Electronic Speckle Pattern Interferometry (ESPI) into fringes corrupted by additive gaussian noise. This fact allow us to
Manuel Servin +2 more
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Analysis of Phase Noise in Phase/Frequency Detectors [PDF]
IEEE Transactions on Circuits and Systems I: Regular Papers, 2013 The phase noise of phase/frequency detectors can significantly raise the in-band phase noise of frequency synthesizers, corrupting the modulated signal. This paper analyzes the phase noise mechanisms in CMOS phase/frequency detectors and applies the results to two different topologies.
Behzad Razavi
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IEEE Transactions on Wireless Communications, 2010
In this article we examine the effect of phase noise on a multi-antenna beamforming system. The effect is quantified in terms of error vector magnitude (EVM). It is shown that using independent phase noise sources improves EVM performance in the main lobe.
Thomas Hähne, Ville Ranki
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In this article we examine the effect of phase noise on a multi-antenna beamforming system. The effect is quantified in terms of error vector magnitude (EVM). It is shown that using independent phase noise sources improves EVM performance in the main lobe.
Thomas Hähne, Ville Ranki
openaire +1 more source
Phase noise suppression in MIMO OFDM systems with incoherent phase noise
2011 - MILCOM 2011 Military Communications Conference, 2011This paper presents a remedy to the phase noise problem in the multiple-input/multiple-output (MIMO), orthogonal frequency division multiplexing (OFDM) systems with incoherent phase noise. The phase noise incoherence (PNI) is a common condition that arises when different channels in a MIMO system use different local oscillator (LO) signals. Phase noise
Babak Daneshrad, Weijun Zhu
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Phase noise in oscillators: DAEs and colored noise sources
1998 IEEE/ACM International Conference on Computer-Aided Design. Digest of Technical Papers (IEEE Cat. No.98CB36287), 1998Oscillators are key components of electronic systems. Undesired perturbations, i.e. noise, in practical electronic systems adversely affect the spectral and timing properties of oscillators resulting in phase noise, which is a key performance limiting factor, being a major contributor to bit-error-rate (BER) of RF communication systems, and creating ...
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Electronic simulation of phase noise
European Transactions on Telecommunications, 1995AbstractTheoretical considerations show how to simulate lorentzian shaped phase noise of optical or microwave carrier signals by means of bandlimited noise frequency modulation. An experimental setup is presented which realizes the predicted behaviour concerning spectral bandwidth and shape.
Dieter Kreß, Olaf Ziemann, Ralf Dietzel
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