Method of Signal Generator Residual Error Vector Magnitude Estimation

Noise from signal generators and signal analyzers often makes the main contribution to the error vector magnitude (EVM) measurement uncertainty when measuring instruments are directly connected. Cross-correlation methods are widely used to estimate the noise characteristics of measuring instruments....

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Bibliographic Details
Published in2024 26th International Conference on Digital Signal Processing and its Applications (DSPA) pp. 1 - 4
Main Authors Bazhenov, Nikolay R., Mogilev, Ivan V., Ivanov, Bogdan V.
Format Conference Proceeding
LanguageEnglish
Published IEEE 27.03.2024
Subjects
amplitude depth
cross-correlation
Error Vector Magnitude (EVM)
Estimation
Instruments
Long-Term Evolution (LTE)
Measurement uncertainty
modulation
Noise
Quadrature Amplitude Modulation (QAM)
Signal generators
Signal processing algorithms
Uncertainty
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Summary:Noise from signal generators and signal analyzers often makes the main contribution to the error vector magnitude (EVM) measurement uncertainty when measuring instruments are directly connected. Cross-correlation methods are widely used to estimate the noise characteristics of measuring instruments. A cross-correlation method has been investigated to estimate the residual EVM of the signal generators separately from the signal analyzers EVM. The results of estimation the uncertainty of the EVM direct measurements in the range lower than the signal analyzer residual EVM are obtained. This aspect is important for the accurate of the EVM measurements, because it confirms the correctness of the algorithm and the cross-correlated EVM calculation.
DOI:10.1109/DSPA60853.2024.10510124