Results 41 to 50 of about 425,179 (247)
Performance Improvement in Passive Backscatter Based RFID System with Low DCR Modulations [PDF]
, 2014 This paper presents application of the low Duty Cycle Ratio (DCR) modulations: isochronous Digital Pulse Position Modulation (DPPM) and anisochronous Digital Pulse Interval Modulation (DPIM) in backscatter based passive RFID communication system.
Svedek, T., Vinko, D., Zagar, D.
core +1 more source
Ultra Fast Nonlinear Optical Tuning of Photonic Crystal Cavities [PDF]
, 2006 We demonstrate fast (up to 20 GHz), low power (5 $\mu W$) modulation of photonic crystal (PC) cavities in GaAs containing InAs quantum dots. Rapid modulation through blue-shifting of the cavity resonance is achieved via free carrier injection by an above-
Dirk Englund +6 more
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IET Power Electronics, 2021 This paper proposes a strategy called hybrid asymmetrical regular sampled modified space‐vector pulse width modulation technique in two‐level voltage source inverters.
Wentao Zhang +3 more
doaj +1 more source
Optical analogs of NMR phase coherent multiple pulse spectroscopy [PDF]
, 1981 A new technique is presented for producing optical pulse sequences using acousto-optical modulation.
Warren, W. S., Zewail, A. H.
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Adaptive differential amplitude pulse-position modulation technique (DAPPM) using fuzzy logic for optical wireless communication channels [PDF]
, 2012 In the past few years, people have become increasingly demanding for high transmission rate, using high-speed data transfer rate, the number of user increased every year, therefore the high-speed optical wireless communication link have become more
Bong, Siaw Wee
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Position modulation with random pulses
Optics Express, 2014 A new class of sources generating ensemble of random pulses is introduced based on superposition of the mutual coherence functions of several Multi-Gaussian Schell-model sources that separately are capable of shaping the propagating pulse's average intensity into flat profiles with adjustable duration and edge sharpness.
Min, Yao +3 more
openaire +2 more sources
On the Amplitude of Burst Oscillations in 4U 1636-54: Evidence for Nuclear Powered Pulsars [PDF]
, 1998 We present a study of 581 Hz oscillations observed during a thermonuclear X-ray burst from the low mass X-ray binary (LMXB) 4U 1636-54 with the Rossi X-ray Timing Explorer (RXTE).
Iosif Lapidus +5 more
core +3 more sources
Performance analysis of hybrid MPAPM technique for deep‐space optical communications
IET Communications, 2021 A hybrid multiple pulse amplitude and position modulation (H‐MPAPM) scheme based on gradual multi‐pulse pulse‐position modulation (G‐MPPM) and multi‐level pulse amplitude modulation (M‐PAM) schemes is proposed for deep‐space optical communication.
Sadiq Idris +2 more
doaj +1 more source
, 2010 We demonstrate a 5-GHz-broadband tunable slow-light device based on stimulated Brillouin scattering in a standard highly-nonlinear optical fiber pumped by a noise-current-modulated laser beam. The noise modulation waveform uses an optimized pseudo-random
Bo +24 more
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Signal ratio system utilizing voltage controlled oscillators Patent [PDF]
, 1968 Voltage controlled oscillators and pulse amplitude modulation for signal ratio ...
Broderick, R. F.
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