Results 71 to 80 of about 259 (91)

THE EFFECT OF RADIO FREQUENCY INTERFACE IMPERFECTIONS ON THE ERROR VECTOR MAGNITUDE (EVM) IN LTE AND 5G SYSTEMS

Proceedings of XVII International Conference Measurement and Control in Complex System (MCCS-2024)
The development of telecommunications proceeds by increasing the speed of information transmission, improving the quality of communication, and providing new services. Modern mobile phones have a transmitter and a receiver located in the same housing. Double frequency conversion is used to transfer the spectrum of signals from the main frequency band ...
Juliy Boiko, Ilya Pyatin
openaire   +3 more sources

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
openaire   +1 more source

Traceable measurement of Error Vector Magnitude (EVM) in WCDMA signals

2007 International Waveform Diversity and Design Conference, 2007
This is the first report of a methodology to provide national standards traceability for EVM measurement of WCDMA RF sources using waveform metrology techniques. The method uses sampling oscilloscopes or real-time digital oscilloscopes. Preliminary results indicate that the rms uncertainty of the modulation waveform, at 95% confidence, is less than 0.3
David A. Humphreys, Robert T. Dickerson
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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) Measurements for GSM/EDGE Applications Revised under Production Conditions

2005 IEEE International Symposium on Circuits and Systems, 2005
A main concern in the testing of systems fulfilling the enhanced general packet radio service (EGPRS) requirements is the proper measurement of the error vector magnitude (EVM) for the implemented 8PSK modulator. However, handsets supporting EGPRS also incorporate a GMSK modulator and hence, in order to reduce computing time on the production tester by
Markus Helfenstein, Ertan Baykal, Kurt Müller, Alexander Lampe   +3 more
openaire   +1 more source

Uncertainty and design budgets applied to error vector magnitude (EVM) for digital modulation systems

61st ARFTG Conference Digest, Spring 2003., 2004
EVM is a key metric for RF components and subsystems in most digital modulation systems. Understanding the way in which different distortion mechanisms contribute to the overall EVM is the key to determining how to construct a system budget for EVM.
openaire   +1 more source

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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A Calibrated Over-the-Air Measurement Method for Error Vector Magnitude Characterization

IEEE Transactions on Instrumentation and Measurement, 2022
Haidong Chen, Weijie Lin, Shuai Wang
exaly  

Error Vector Magnitude-Based Low Complexity Adaptive Power Allocation in SM-MIMO System

IEEE Systems Journal, 2022
Zhiquan Bai, Ke Pang, Xinhong Hao
exaly  

On the formal identity of EVM and NPR measurement methods: Conditions for identity of error vector magnitude and noise power ratio

2011 41st European Microwave Conference, 2011
openaire   +1 more source