name: DNF
full_form: Direct Near Field
context: inter-band NR CA, test setup provides NR FR1 link to the DUT. The NR FR1 link has a stable and noise-free signal without precise path loss or polarization control. No performance verification for NR FR1 carriers is supported. - The test system shall allow the following modes of noise emulation for UE demodulation testing: - Mode 1: Emulation of fixed SNR conditions at the DUT - Mode 2: Emulation of noise-free conditions at the DUT - Measurement system shall support the TX EVM (transmit signal error vector magnitude) not worse than 6% for QPSK/16QAM/64QAM performance requirements. - The baseline setup shall allow identification of the DUT RX beam peak direction - Note: RX beam peak search procedure for the DNF setup is undefined. -- Applicability Criteria: In case a DNF test setup is used, the system applies at least to DUTs with a device size of D â¤ 15cm with no manufacturer declaration and corresponding SNR calculations in Annex B.3.1 need to be used. - In case a DFF or IFF test
description: Direct Near Field (DNF) is a technology setup for testing user equipment (UE) demodulation performance, particularly in the context of inter-band NR CA and NR FR1 link. It provides a stable and noise-free signal without precise path loss or polarization control.
explanation: The description highlights DNF as a specific technological setup designed for testing purposes within telecommunications. Its focus on user equipment (UE) demodulation performance and characteristics like a stable, noise-free signal point towards its role as a technology used in the field of telecommunications.
section_title: 7.2.1.1Description
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