Enhanced Digital Halftoning via Weighted Sigma-Delta Modulation [PDF]
SIAM Journal of Imaging Sciences, 2022 In this paper, we study error diffusion techniques for digital halftoning from the perspective of 1-bit Sigma-Delta quantization. We introduce a method to generate Sigma-Delta schemes for two-dimensional signals as a weighted combination of its one ...
Felix Krahmer, Anna Veselovska
semanticscholar +1 more source
Low power all-digital radio-over-fiber transmission for 28-GHz band using parallel electro-absorption modulators [PDF]
, 2020 We present a low-power all-digital radio-over-fiber transmitter for beyond 28-GHz using sigma-delta modulation, a 140mW NRZ driver and parallel electro-absorption modulators. 5.25Gb/s (2.625Gb/s) 64-QAM is transported over 10-km SSMF at 1560nm with 7.6% (
Bauwelinck, Johan +12 more
core +2 more sources
Experimental characterization of Sigma Delta Radio over fiber system for 5G C-RAN downlink
ICT Express, 2020 Radio over Fiber is a promising technology for the 5G Cloud Radio Access Network. We demonstrate experimentally Sigma Delta Radio over Fiber by means of Sigma Delta Modulator (SDM) subsequently replacing expensive digital to analog converters.
Muhammad Usman Hadi +3 more
doaj +1 more source
Noise Floor Reduction in Frequency Delta-Sigma Modulation Microphone Sensors
Sensors, 2021 Frequency delta-sigma modulator (FDSM) employing a variable frequency oscillator is a novel replacement of the classical delta-sigma modulators. This is advantageous for application to sensors, because an ADC can be intrinsically integrated with the ...
Koichi Maezawa +2 more
doaj +1 more source
Common-Mode Voltage Mitigation Strategies Using Sigma–Delta Modulation in Five-Phase VSIs
IEEE transactions on power electronics, 2022 Various sigma–delta ($\Sigma$$\Delta$) modulation techniques for reducing the maximum peak-to-peak amplitude of common-mode voltage (CMV) by 80% in a five-phase, high-frequency voltage source inverter (VSI) are proposed and evaluated in this article ...
Fernando Acosta-Cambranis +4 more
semanticscholar +1 more source
Impulsive Sound Detection Directly in Sigma-Delta Domain
Archives of Acoustics, 2017 Recent implementations of Sigma-delta converters have achieved low cost, low power consumption and high integration while maintaining resolution as high as in Nyquist-rate converters.
Igor Dantas dos Santos MIRANDA +1 more
doaj +1 more source
Digital OFDM-PON Based on Delta–Sigma Modulation Employing Binary IM-DD Channels
IEEE Photonics Journal, 2017 In this paper, a delta–sigma modulation is proposed for the orthogonal frequency division multiplexed-passive optical network (OFDM-PON) to enable transmission of OFDM signals via binary intensity modulation and direct detection (IM-DD) channels ...
Cai Li +5 more
doaj +1 more source
Gain Error Correction for CMOS Image Sensor Using Delta-Sigma Modulation [PDF]
, 2010 A delta-sigma modulation analog-to-digital converter (ADC) has many benefits over the use of a pipeline ADC in a CMOS image sensor. This includes lower power, noise reduction, ease of maximizing the input range, and simpler signal routing for large ...
Baker, R. Jacob, Yap, Kuangming
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Should {\Delta}{\Sigma} Modulators Used in AC Motor Drives be Adapted to the Mechanical Load of the Motor? [PDF]
, 2012 We consider the use of {\Delta}{\Sigma} modulators in ac motor drives, focusing on the many additional degrees of freedom that this option offers over Pulse Width Modulation (PWM). Following some recent results, we show that it is possible to fully adapt
Bizzarri, Federico, Callegari, Sergio
core +1 more source
Observation of Associated Near-Side and Away-Side Long-Range Correlations in root S-NN=5.02 TeV Proton-Lead Collisions with the ATLAS Detector [PDF]
, 2013 Two-particle correlations in relative azimuthal angle (Delta phi) and pseudorapidity (Delta eta) are measured in root S-NN = 5.02 TeV p + Pb collisions using the ATLAS detector at the LHC.
ATLAS Collaboration, Çetin, Serkant Ali
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