Results 141 to 150 of about 3,213,319 (172)

AI Video Analysis in Parkinson's Disease: A Systematic Review of the Most Accurate Computer Vision Tools for Diagnosis, Symptom Monitoring, and Therapy Management. [PDF]

Sensors (Basel)
di Biase L, Pecoraro PM, Bugamelli F.
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An Atomistic Investigation of Cobalt's Nanoindentation Response with An Angular Dependent Potential. [PDF]

ACS Omega
Oliveira DS, Kuritza DP, Padilha JE, Cotta MA.   +3 more
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The Numerical Simulation and Experiment Research for Measurement of Error Vector Magnitude (EVM)

Applied Mechanics and Materials, 2011
Wireless communications is one of the main industrial areas that require metrological support. However, Error Vector Magnitude (EVM), which is one of most important parameters used to define the performance of wireless communications equipment qualitatively, is facing some difficulties in making traceable measurement. In order to research the effect of
Hong Fang, Xin Bian, Xin Zhou, Ke Liu
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Error Vector Magnitude (EVM)-Based Constellation Combiner for Cooperative Relay Network

IEEE Communications Letters, 2016
This letter proposes a novel diversity combining technique based on error vector magnitude (EVM) for a cooperative relay network. EVM is the vector difference for a given time between the transmitted signal and the received signal. At the destination, the proposed combiner combines the minimum EVM constellations obtained from the received links ...
Mugelan Ramakrishnan Kuppusamy, Syed Moinuddin Bokhari, Marcharla Anjaneyulu Bhagyaveni   +2 more
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SLIC EVM — Error vector magnitude without demodulation

2017 89th ARFTG Microwave Measurement Conference (ARFTG), 2017
We present a method for measuring a communication signal's inband error caused by a non-ideal device under test (DUT). In contrast to the established error vector magnitude (EVM), we do not demodulate the data symbols. Rather, we subtract linearly correlated (SLIC) parts from the DUT output and analyze the power spectral density of the remaining error ...
Karl Freiberger, Harald Enzinger, Christian Vogel   +2 more
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The Error Vector Magnitude (EVM) performance in LTE Downlink

2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2019
The Error Vector Magnitude (EVM) is a useful magnitude in the development and design process to indicate the entire signal quality. The post-equalized signal has better performance than pre-equalized signal due to its robustness against noise during channel equalization processing under ideal and interpolation channel estimation.
Hsuan-Fu Wang, Chi-Pan Hwang, Mu-Song Chen   +2 more
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Measurement, Analysis, and Understanding of the Error Vector Magnitude (EVM) of Navigation Signals

IETE Journal of Research, 2018
The Navigation payload onboard the navigation satellite mainly contains the data transmitters used to broadcast the navigation messages at L band and S band carriers towards the user's community.
Md. Tosicul Wara, Raghavendra M. R., Kodandaram M., Bhuvaneshwari M. S.   +3 more
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Built-in Self Test (BIST) for Error Vector Magnitude (EVM) Measurement of RF Transceiver

, 2009
In wireless systems, the overall quality of transmission and reception is determined by various baseband and RF system specifications. The error vector magnitude (EVM) is a measure of the digital modulation quality of the wireless system-under-test which is very sensitive to much impairment in the transceiver. However the EVM test takes a long time and
El Kassir, Bilal, Kelma, C., Jarry, Bernard, Campovecchio, Michel   +3 more
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Computer simulation and measurement of error vector magnitude (EVM) and adjacent-channel power ratio (ACPR) for digital wireless communication RF power amplifiers

Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324), 1999
Computer simulation and measurement of the error vector magnitude (EVM) and the adjacent channel power ratio (ACPR) of a 2.4 GHz MMIC power amplifier (PA) for digital wireless communications is presented. A computer simulation based on the /spl pi//4-DQPSK modulation with square-root raised cosine (SRRC) filter is established for this study.
null Fu-Ling Lin, null Shin-Fu Chen, null Liang-Fang Chen, null Huey-Ru Chuang   +3 more
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Enhanced error vector magnitude (EVM) measurements for testing WLAN transceivers

Proceedings of the 2006 IEEE/ACM international conference on Computer-aided design - ICCAD '06, 2006
As wireless LAN devices become more prevalent in the consumer electronics market, there is an ever increasing pressure to reduce their overall cost. The test cost of such devices is an appreciable percentage of the overall cost, which typically results from the high number of specifications, the high number of distinct test set-ups and equipment pieces
Erkan Acar, Sule Ozev, Kevin Redmond
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