Results 31 to 40 of about 29,078 (117)

Nonlinearity-Induced Spur Analysis in Fractional-N Synthesizers With ΔΣ Quantization Cancellation

IEEE Open Journal of the Solid-State Circuits Society
A fractional-N frequency synthesizer with low total jitter [e.g., <50fsrms, accounting for both phase noise (PN) and spurs] is essential for enabling the emerging 5G/6G and other high-speed wireless communication standards (e.g., WiFi-6/7).
Yizhe Hu, Weichen Tao, Robert Bogdan Staszewski   +2 more
doaj   +1 more source

Ternary and Multi-Bit FIR Filter Area-Performance Tradeoffs in FPGA [PDF]

Mehran University Research Journal of Engineering and Technology, 2013
In this paper, performance and area of conventional FIR (Finite Impulse Responce) filters versus ternary sigma delta modulated FIR filter is compared in FPGA (Field Programmable Gate Arrays) using VHDL (Verilog Description Language).
Khalil-Ur-Rahman Dayo , Tayab Din Memon
doaj  

A High-Dynamic-Range Switched-Capacitor Sigma-Delta ADC for Digital Micromechanical Vibration Gyroscopes

Micromachines, 2018
This paper presents a multi-stage noise shaping (MASH) switched-capacitor (SC) sigma-delta (ΣΔ) analog-to-digital converter (ADC) composed of an analog modulator with an on-chip noise cancellation logic and a reconfigurable digital decimator ...
Risheng Lv, Weiping Chen, Xiaowei Liu
doaj   +1 more source

A Spatial Sigma-Delta Approach to Mitigation of Power Amplifier Distortions in Massive MIMO Downlink

IEEE Open Journal of Signal Processing
In massive multiple-input multiple-output (MIMO) downlink systems, the physical implementation of the base stations (BSs) requires the use of cheap and power-efficient power amplifiers (PAs) to avoid high hardware cost and high power consumption. However,
Yatao Liu, Mingjie Shao, Wing-Kin Ma
doaj   +1 more source

Cycle-Skipping Technique Based on Sigma-Delta Modulation for Power Regulation in Modular SRC-DCX

IEEE Open Journal of Power Electronics
This manuscript investigates a sigma–delta–based cycle-skipping modulation strategy for power regulation and current sharing in modular series resonant DC transformers.
Lohith Kumar Pittala, Andrii Chub, Vadim Sidorov, Salman Khan, Mattia Ricco, Riccardo Mandrioli   +5 more
doaj   +1 more source

Sigma Delta Modulation Based Ternary FIR Filter Mapping on FPGA [PDF]

Mehran University Research Journal of Engineering and Technology, 2011
In this paper single-bit SDM (Sigma Delta Modulation) based TFF (Ternary FIR Filter) with balanced ternary coefficients (i.e. -1/0/+1) has been mapped on small commercially available FPGAs (Field Programmable Gate Arrays).
Tayabuddin Memon, Bhawani Shankar Chowdhry, Khalil-Ur-Rahman Dayo   +2 more
doaj  

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

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