Results 11 to 20 of about 3,347,483 (281)

Measurement Uncertainty Evaluation of Digital Modulation Quality Parameters: Magnitude Error and Phase Error

open access: yesMATEC Web of Conferences, 2016
In digital modulation quality parameters traceability, the Error Vector Magnitude, Magnitude Error and Phase Error must be traced, and the measurement uncertainty of the above parameters needs to be assessed.
Zhan Zhiqiang   +3 more
doaj   +3 more sources

Broadband Measurement of Error Vector Magnitude for Microwave Vector Signal Generators Using a Vector Network Analyzer [PDF]

open access: yesIEEE Transactions on Instrumentation and Measurement, 2022
A frequency-domain method is proposed for the broadband measurement of error vector magnitude (EVM) for vector signal generators (VSGs). The technique is based on frequency-swept narrowband acquisitions performed with a vector network analyzer (VNA) by exploiting a stable (yet unknown) reference signal to obtain phase-repeatable measurements ...
Angelotti, AM   +3 more
openaire   +2 more sources

AraAssim/AraAssim-Vector-magnitude-and-arctangent-approximation: Vector magnitude & arctangent

open access: yes, 2021
This project is concerned with designing a device for approximating vector magnitude and arctangent, all the required source codes and scripts are provided, in addition to that, the entire project implementation process is explained in README.md ...
AraAssim
core   +1 more source

Power limits with adjustable 10G receiver parameters for A-RoF transmission

open access: yesElektronika ir Elektrotechnika, 2023
Current paper characterizes the performance of the three-radio-frequency-channels, orthogonal-frequency-division-multiplexed (OFDM) radio-over-fiber (RoF) transmission system in terms of error-vector-magnitude and received optical signal power for a ...
Inna Kurbatska   +5 more
doaj   +1 more source

Phase Noise Effect on Millimeter-Wave Pre-5G Systems

open access: yesIEEE Access, 2020
The introduction of millimeter waves for 5G wireless communication systems enables the use of more bandwidth and higher carrier frequency, surpassing the capacity of current systems by more than one order of magnitude. The leap of millimeter band results
Jongho Oh, Tae-Kyoung Kim
doaj   +1 more source

All-Optical Double Spectral-Efficient RoF Link With Compensation of Dispersion-Induced Power Fading

open access: yesIEEE Photonics Journal, 2021
An all-optical radio-over-fiber (RoF) link with double spectral-efficient transmission and compensation of chromatic dispersion-induced power fading is proposed and experimentally demonstrated.
Dongjuan Shan   +3 more
doaj   +1 more source

Phased array calibration system with high accuracy and low complexity

open access: yesAlexandria Engineering Journal, 2023
This paper presents a highly efficient phased array calibration system for phase and magnitude error correction. The proposed calibration system is based on far-field scanning of the array antenna under test at factory level. Since the proposed structure
Sol Kim   +3 more
doaj   +1 more source

Maximum RF Input Signal on the Electro-Optic Modulator Transmission Boundary Area for Harmonic Distortion Compensation in Analog Radio Over Fiber

open access: yesIEEE Access, 2022
In this study, we perform an analytical investigation of the electro-optic (EO), Mach-Zehnder modulator (MZM) transmission boundary area with a nonlinear model.
Yus Natali   +2 more
doaj   +1 more source

Robust adaptive beamforming using a Bayesian steering vector error model [PDF]

open access: yes, 2013
We propose a Bayesian approach to robust adaptive beamforming which entails considering the steering vector of interest as a random variable with some prior distribution.
Bidon, Stéphanie, Besson, Olivier
core   +1 more source

A transceiver design based on uniform channel decomposition and MBER vector perturbation [PDF]

open access: yes, 2010
Uniform channel decomposition (UCD), as an improvement of geometric mean decomposition (GMD), is capable of decomposing a multiple-input–multiple-output (MIMO) channel into multiple subchannels having an identical capacity.
Chen, Sheng, Hanzo, Lajos, Yao, Wang
core   +2 more sources

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