Results 21 to 30 of about 29,078 (117)

Analysis of Booth Multiplier based Conventional and Short Word Length FIR Filter

open access: yesMehran University Research Journal of Engineering and Technology, 2018
The optimized implantation of digital filters has remained one of the challenging tasks, for FPGA (Field- Programmable Gate Array) based system designers, due to the involvement of very complex circuitry for multiplication.
Aneela Pathan   +3 more
doaj   +1 more source

Bandpass Sigma–Delta Modulation: The Path toward RF-to-Digital Conversion in Software-Defined Radio

open access: yesChips, 2023
This paper reviews the state of the art on bandpass ΣΔ modulators (BP-ΣΔMs) intended to digitize radio frequency (RF) signals. A priori, this is the most direct way to implement software-defined radio (SDR) systems since the analog/digital interface is ...
Jose M. de la Rosa
doaj   +1 more source

DSM-Based Precise Pointing Angle Deviation Measurement Method for Beaconless Free Space Optical Communication

open access: yesIEEE Photonics Journal, 2023
In free space optical (FSO) communication, acquisition, tracking and pointing (ATP) is the key technology to maintain a high-quality FSO link. Specifically, the detection of pointing angle deviation greatly affects the performance of ATP, especially ...
Xueyuan Ao   +7 more
doaj   +1 more source

A Hierarchical Modulation Enabled SNR Allocable Delta-Sigma Digital Mobile Fronthaul System

open access: yesIEEE Photonics Journal, 2022
Internet of everything is being build up rapidly, which causes much higher requirements towards the flexibility of communication resources, especially the adaptivity of the fronthaul to various transmission distances and capacities.
Yang Zou   +9 more
doaj   +1 more source

Analisa Kinerja Sinusoidal PWM Inverter untuk Pengaturan Kecepatan Motor Induksi Tiga Fasa

open access: yesTeknika, 2016
PWM (pengaturan lebar pulsa) merupakan salah satu teknik yang baik untuk digunakan dalam sistem kendali (control system) saat ini. Pengaturan lebar modulasi dipergunakan di berbagai bidang yang sangat luas, salah satu diantaranya adalah pengaturan ...
Heri Haryanto, Vicky Immanuel
doaj   +1 more source

Comparative Study between Duty Cycle Modulation (DCM) and Sigma-Delta (Ʃ∆) Modulation Based on Analog to Digital Conversion [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2023
This paper presents a virtual comparative study between the Analog to Digital Conversion (ADC) based Duty Cycle Modulation (DCM) and Sigma-Delta (Ʃ∆) modulation.
OTAM Steve Ulriche, MOFFO Lonla Bertrand
doaj  

A Low-Power Delta-Sigma Capacitance-to-Digital Converter for Capacitive Sensors

open access: yesIEEE Access, 2019
This paper proposes a low-power delta-sigma capacitance-to-digital converter (CDC) for a capacitive sensor. The input of the capacitive sensor employs a zoomed-in technique with the offset capacitor to extend the input capacitance range. The proposed CDC
Rongshan Wei   +3 more
doaj   +1 more source

Laser-sound reproduction by pulse amplitude modulation audio streams

open access: yesScientific Reports
Recently, the possibility to reproduce complex continuous acoustic signals via pulsed laser-plasma sound sources was demonstrated. This was achieved by optoacoustic transduction of dense laser pulse trains, modulated via single- or multi-bit Sigma–Delta,
Konstantinos Kaleris   +3 more
doaj   +1 more source

Adaptive Delta-Sigma Modulation for Enhanced Input Dynamic Range

open access: yesEURASIP Journal on Advances in Signal Processing, 2008
An adaptive delta-sigma modulator of 1st order with one-bit quantization is presented. Adaptation is instantaneous and based on an exponential law. The feedback signal is a multibit discrete-level signal generated by a digital-to ...
Clemens M. Zierhofer
doaj   +1 more source

Three-Level De-Multiplexed Dual-Branch Complex Delta-Sigma Transmitter

open access: yesSensors, 2018
In this paper, a dual-branch topology driven by a Delta-Sigma Modulator (DSM) with a complex quantizer, also known as the Complex Delta Sigma Modulator (CxDSM), with a 3-level quantized output signal is proposed.
Anis Ben Arfi   +4 more
doaj   +1 more source

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