Results 11 to 20 of about 2,126 (235)

Signal Shaping for Generalized Spatial Modulation and Generalized Quadrature Spatial Modulation [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2019
Summited to IEEE ...
Shuaishuai Guo   +5 more
openaire   +3 more sources

Improving Harmonic Rejection Capability of OSG Based on n-th Order Bandpass Filter for Single-Phase System

open access: yesIEEE Access, 2021
The second-order generalized integrator based orthogonal signal generator (SOGI-OSG) is commonly used to produce direct and quadrature axis ( $dq$ -axes) signals in stationary reference frame for single-phase systems.
Ye Gu Kang, David Diaz Reigosa
doaj   +1 more source

UHF-Band TV Transmitter for TV White Space Video Streaming Applications [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2019
This paper presents a television (TV) transmitter for wireless video streaming applications in TV white space band. The TV transmitter is composed of a digital TV (DTV) signal generator and a UHF-band RF transmitter.
Hyunchol Shin, Hyukjun Oh
doaj   +1 more source

A New Approach to Fourth-Order Quadrature Signal Generation for a Fast and Noise-Free PLL Output Under Non-Ideal Grid Voltage Conditions

open access: yesIEEE Access, 2022
Dual quadrature signal generator (QSG) along with a positive sequence calculator (PSC) eliminates the negative sequence components from unbalanced grid voltages.
Bishal Mondal, B. Arun Karuppaswamy
doaj   +1 more source

An optical digital‐to‐analog converter with a built‐in intensity converter consisting of silicon waveguide

open access: yesIET Optoelectronics, 2023
Optical digital‐to‐analog converters (DACs) are key to overcoming the enormous power consumption caused by the slowdown of Moore's Law. In previous work, an optical DAC consisting of a signal generator and an intensity converter was presented.
Yohei Aikawa, Hiroyuki Uenohara
doaj   +1 more source

Development and Validation of an Adaptive Method to Generate High-Resolution Quadrature Encoder Signals [PDF]

open access: yesJournal of Dynamic Systems, Measurement, and Control, 2014
This paper presents a new method to increase the measurement resolution of quadrature encoders. The method contains an adaptive signal correction step and a signal interpolation step. Measured encoder signals contain imperfections including amplitude differences, mean offsets, and quadrature phase shift errors.
Ulu, E., Ulu, N.G., Cakmakci, M.
openaire   +4 more sources

Simultaneous dual true random numbers generator

open access: yesDyna, 2016
This paper details the design and implementation of a simultaneous dual true random numbers generator using only one laser and a digital signal processing system with a DE0 Nano FPGA.
Josue Aaron Lopez Leyva   +1 more
doaj   +1 more source

Research on Improved Costas Loop for High-order QAM [PDF]

open access: yesJisuanji gongcheng, 2017
In order to improve convergence speed and tracking stability for high-order Quadrature Amplitude Modulation(QAM) demodulation carrier recovery,a new kind of Costas loop is designed based on software radio thought and the basic principle of traditional ...
ZHOU Shengyuan,PAN Huilan
doaj   +1 more source

A 24 GHz CMOS Direct-Conversion RF Receiver with I/Q Mismatch Calibration for Radar Sensor Applications

open access: yesSensors, 2022
A 24 GHz millimeter-wave direct-conversion radio-frequency (RF) receiver with wide-range and precise I/Q mismatch calibration is designed in 65 nm CMOS technology for radar sensor applications.
Yongho Lee, Soyeon Kim, Hyunchol Shin
doaj   +1 more source

Dual-Tone QPSK Optical Millimeter-Wave Signal Generation by Frequency Nonupling the RF Signal Without Phase Precoding

open access: yesIEEE Photonics Journal, 2016
A novel dual-tone quadrature phase-shift keying (QPSK) optical millimeter (mm)-wave signal generation by frequency nonupling the radio-frequency QPSK signal via an optical phase modulator (PM) without phase precoding is proposed.
Jianxin Ma
doaj   +1 more source

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