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Dynamic Range by Design in OTA EVM measurements
We present an experimental approach to design an over-the-air (OTA) millimeter-wave system for measuring error vector magnitude (EVM) with associated uncertainties that include correlations and nonlinearities. Our approach uses a variable waveguide attenuator at the output of a modulated-signal source at 44 GHz and provides traceable measurements on a calibrated equivalent-time sampling oscilloscope. The conductor-based EVM measurements and associated uncertainties presented here serve as a baseline for the eventual OTA-based EVM. We also discuss a noise based EVM estimation technique as a simple tool for planning OTA EVM measurements, but without a complete knowledge of measurement uncertainties.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| accrualPeriodicity | irregular |
| bureauCode |
[ "006:55" ] |
| contactPoint |
{ "fn": "Paritosh Manurkar", "hasEmail": "mailto:paritosh.manurkar@nist.gov" } |
| description | We present an experimental approach to design an over-the-air (OTA) millimeter-wave system for measuring error vector magnitude (EVM) with associated uncertainties that include correlations and nonlinearities. Our approach uses a variable waveguide attenuator at the output of a modulated-signal source at 44 GHz and provides traceable measurements on a calibrated equivalent-time sampling oscilloscope. The conductor-based EVM measurements and associated uncertainties presented here serve as a baseline for the eventual OTA-based EVM. We also discuss a noise based EVM estimation technique as a simple tool for planning OTA EVM measurements, but without a complete knowledge of measurement uncertainties. |
| distribution |
[ { "mediaType": "text/plain", "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2938/2938_README.txt" }, { "mediaType": "text/plain", "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2938/2938_README.txt.sha256" }, { "mediaType": "text/plain", "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2938/data_for_Fig2_2023.04.22_final.txt" }, { "mediaType": "text/plain", "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2938/data_for_Fig2_2023.04.22_final.txt.sha256" }, { "mediaType": "text/plain", "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2938/data_for_Fig3_2023.04.22_final.txt" }, { "mediaType": "text/plain", "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2938/data_for_Fig3_2023.04.22_final.txt.sha256" } ] |
| identifier | ark:/88434/mds2-2938 |
| issued | 2024-01-03 |
| keyword |
[ "Digitally modulated signals", "error vector magnitude", "over-the-air measurements", "uncertainty analysis", "wireless system." ] |
| landingPage | https://data.nist.gov/od/id/mds2-2938 |
| language |
[ "en" ] |
| license | https://www.nist.gov/open/license |
| modified | 2023-04-22 00:00:00 |
| programCode |
[ "006:045" ] |
| publisher |
{ "name": "National Institute of Standards and Technology", "@type": "org:Organization" } |
| theme |
[ "Advanced Communications:Wireless (RF)" ] |
| title | Dynamic Range by Design in OTA EVM measurements |
