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 |
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|
| 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 |
