Results 71 to 80 of about 1,142,708 (193)

A Deterministic Analysis of Decimation for Sigma-Delta Quantization of Bandlimited Functions

, 2015
We study Sigma-Delta ($\Sigma\Delta$) quantization of oversampled bandlimited functions. We prove that digitally integrating blocks of bits and then down-sampling, a process known as decimation, can efficiently encode the associated $\Sigma\Delta$ bit ...
Daubechies, Ingrid, Saab, Rayan
core   +2 more sources

Design Optimization of Feedforward Equalization for Mobile Fronthaul Based on Delta-Sigma Modulation With High-Order QAM Signals

IEEE Photonics Journal
Delta-sigma modulation can be used as a high spectral efficiency interface in place of conventional common public radio interface (CPRI) in mobile fronthaul (MFH) networks.
Jianghao Li, Yangsheng Yuan, Yangjian Cai   +2 more
doaj   +1 more source

Design of the 12-bit Delta-Sigma Modulator using SC Technique for Vibration Sensor Output Processing [PDF]

, 2012
The work deals with the design of the 12-bit Delta-Sigma modulator using switched capacitors (SC) technique. The modulator serves to vibration sensor output processing. The first part describes the Delta-Sigma modulator parameters definition.
Haze, J., Kledrowetz, V., Pavlik, M.
core   +1 more source

Analysis and simulation of a novel speed estimation method based on oversampling and noise shaping techniques

Results in Engineering
Angle measurement is widely used in the servo positioning and speed control of electrical drives, where optical encoders are employed as sensors and coupled to microcontrollers with complex peripherals to provide effective position and speed measurement ...
F. Colodro, J.L. Mora, F. Barrero, M.R. Arahal, J.M. Martinez-Heredia   +4 more
doaj   +1 more source

Switching-mode audio amplifier based on a ΔΣ A/D converter [PDF]

International Journal of Electronics and Telecommunications
The article describes the design and implementation of a modular hardware platform intended for testing and measuring various configurations of switching-mode audio amplifiers based on sigma-delta modulation.
Jarosław Jabłoński, Marcin Lewandowski   +1 more
doaj   +1 more source

Ergodic achievable rate analysis of one-bit sigma-delta modulated all-digital massive MIMO system

Dianxin kexue
The all-digital massive multiple-input multiple-output (MIMO) system has a wide range of application prospects in mobile communication due to its advantages such as low cost, strong signal processing capability, and flexible configuration.
HU Anzhong, HUANG Lijun
doaj  

Research on Real-time Free-Space Optical Transmission Experiment Demonstration based on Delta-Sigma Modulation

Guangtongxin yanjiu, 2023
To simplify the structure of real-time coherent Free-Space Optical (FSO) / wireless systems and reduce costs, this paper implements a low-cost FSO system based on bandpass Delta-Sigma Modulation (DSM) technology. A 256-ary Quadrature Amplitude Modulation
WANG Zhong-zhong, AO Xue-yuan, YANG Qi
doaj  

A design methodology to enable sampling PLLs to synthesise fractional-N frequencies [PDF]

, 2011
A novel design methodology is proposed to enable sampling phase-locked loops (SPLL) to synthesise fractional-N frequencies. To date, SPLL can only generate integer-N frequencies.
Condon, Marissa, Linigyong, Shen, Xu, Tao   +2 more
core  

METHODS FOR IMPROVING METROLOGICAL PARAMETERS OF ΣΔ-ADC

Измерение, мониторинг, управление, контроль
Background. ADC / DAC are one of the main elements of modern technical systems and, in general, most digital devices that interact with the environment.
A.G. Dmitrienko, K.Yu. Piskaev, K.V. Gudkov, M.V. Tyurin   +3 more
doaj   +1 more source

Components for oversampled signal processors [PDF]

, 2002
Oversampled converters trade transmission bandwidth for resolution. An idealized model gives an insight into the way in which signals are encoded and thus how they can be manipulated.
Monk, John
core