name: EVM
full_form: Error Vector Magnitude
context: Editorâs Note: Addition to applicability spec is pending. 6.4A.2.4.1 Test purpose The zero-forcing equalizer correction applied in the EVM measurement process (as described in Annex E) must meet a spectrum flatness requirement for the EVM measurement to be valid. The EVM equalizer spectrum flatness is defined in terms of the maximum peak-to-peak ripple of the equalizer coefficients (dB) across the allocated uplink block variation in dB of the equalizer coefficients generated by the EVM measurement process. The EVM equalizer spectrum flatness requirement does not limit the correction applied to the signal in the EVM measurement process but for the EVM result to be valid, the equalizer correction that was applied must meet the EVM equalizer spectrum flatness minimum requirements. The basic measurement interval is the same as for EVM. 6.4A.2.4.2 Test applicability This test case applies to all types of NB-IoT FDD UE release 17 and forward of UE category M1 that support satellite access
description: Error Vector Magnitude (EVM) is a measurement used in telecommunications to evaluate user equipment (UE) performance regarding signal quality and transmission accuracy. It represents the magnitude of the error vector between the ideal constellation point and the received symbol. The EVM equalizer spectrum flatness requirement ensures the correction applied during the EVM measurement process meets specific standards for validity.
explanation: EVM is classified as a Measurement because it quantifies signal quality in telecommunications by assessing the magnitude of errors between expected and received signals. This numerical value directly reflects the performance of user equipment.
section_title: 6.4A.2.4	EVM equalizer spectrum flatness for category M1
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