Equalizer Training (5G NR/5G-Advanced)

Equalizer Training contains a group of parameters that control the equalizer training procedure.

Signal Source - Determines what portion of the signal contributes to the equalizer training procedure. This affects the equalization used for demodulation, as well as the presented channel frequency response result data.

None - Equalizer Training is off.

RS - DMRS of all active channels.

RS+Data - DMRS of all active channels + PTRS (if there is PTRS) + DATA.

Default: RS (downlink), RS + Data (uplink)

Choices: None, RS, RS + Data

Time Basis - Determines the frequency of equalizer training within the result length.

Per Slot - Equalizer training is performed once per slot.

Per Subframe - Equalizer training is performed once per subframe.

Per Frame - Equalizer training is performed once per frame.

Result Length - Equalizer training is performed once for the entire result length.

Default: Per Frame

Choices: Per Slot, Per Subframe, Per Frame, Result Length

Freq Moving Avg. Filter (downlink only) - specifies whether or not to perform a moving average (frequency smoothing) on the reference signal during equalization, and sets the equalization moving average filter length in RS subcarriers.

The moving average filter smoothing function is based on annex F.7 of 38.141-1, for purposes of conformance test compatibility. The actual frequency width of this smoothing function will vary based on what subcarriers are included in the equalization (RS, RS+Data) and on the RB that are allocated within the signal. The definition is based upon usage of reference subcarriers (RS), although the generalized implementation used by this measurement supports using data subcarriers as well when Equalizer Training Signal Source is set to RS+Data.

Default: 19

Range: 1-4095 (only odd values are allowed)

See Also

Advanced tab

5G NR/5G-Advanced Demod Properties Dialog Box