Carrier Setup DL

This topic applies to downlink carrier configurations.

Save to 89600 Setup File

This feature saves the Carrier configuration as a 89600B VSA setup file, simplifying VSA configuration so you can quickly demodulate the signal. For information about setup file settings, refer to 89600 Setup File Setting.

Full-filled Config

Opens the Full-filled Configuration dialog window.

DL Test Model

Opens the Downlink Test Model dialog window.

DL FRC Configuration

Opens the Downlink FRC Configuration dialog window.

1. General Settings

Enabled

Choices: On | Off

Default: On (fixed)

Enable or disable the carrier in waveform generation.

Displays the state of the carrier in waveform generation.

Frequency Offset

Range: -1 GHz to 1 GHz

Default: 0

Set the frequency offset to the carrier signal in Hz.

Timing Offset

Range: 0 to 0.01s

Default: 0

Set the timing offset of the carrier relative to others.

Power Boosting

Range: -40 to 40 dB

Default: 0 dB

Set the power boosting of the carrier relative to others.

Initial Phase

Range: 0 to 360

Default: 0

Enter the initial phase of the carrier signal in degree.

2. Spectrum Control

DC Punctured

Choices: On | Off

Default: Off

Set whether DC is punctured in the final signal for current carrier.

For uplink carrier with Transform Precoding enabled for UL-SCH, DC Punctured is forced to Off.

Window Beta

Range: 0 to 0.07

Default: 0

Set the windowing length used to smooth OFDM symbol transitions. Specify this value as a fraction of FFT Length, not the percentage. Using windowing can help reduce out-of-band energy and eliminate the spurs in adjacent channel. It is not applicable for PRACH carrier.

Windowing Method

Choices: Centered at Symbol Boundary | Starting at Symbol Boundary

Default: Centered at Symbol Boundary

Select the windowing method applied to the OFDM symbol transitions. The raised cosine window can be centered at the OFDM symbol boundary, or starting from the OFDM symbol boundary. Closed View image.

It is not applicable for PRACH carrier.

Centered at Symbol Boundary specifies that the window is applied with its center at the boundary between two orthogonal frequency division multiplexing (OFDM) symbols.

Starting at Symbol Boundary specifies that the window is applied with its starting position at the boundary between two OFDM symbols.

Baseband Filter

Choices: On | Off

Default: On

Enable or disable baseband filter. The filter is applied to each numerology of this carrier. It is a low-pass or band-pass FIR filter with hamming window. The central frequency and bandwidth of this filter depend on the resource allocation of each numerology. It is not applicable for PRACH.

Taps: 1024

Band margin: 1 RB for each side

It is recommended to enable baseband filter to achieve a balance between ACPR and EVM performance.

3. Cell-Specific Settings

Carrier Type

Choices: Downlink | Uplink | PRACH | Continuous Wave

Default: DownlinkUplink (fixed)

Select the carrier type. If you need to transmit all of them together in the same carrier, use multi-carrier with same frequency offset.

Displays the carrier type.

Cell ID

Range: 0 to 1007

Default: 0

Set the cell ID for the carrier.

Numerology Mode

Choices: Single Numerology | Multiple Numerologies

Default: Single Numerology (fixed)

Select the numerology mode for the current carrier. For Single Numerology mode, a Numerology selection parameter appears (along with supporting parameters) in this property grid and all the BWPs/Channels use this numerology. For Multiple Numerologies mode, a Resource Grid(s) tab appears below, allowing you to enable the resource grid for each numerology, and the numerology for each BWPs/Channels is editable.

Displays the numerology mode for the current carrier. For Single Numerology mode, a Numerology selection parameter appears (along with supporting parameters) in this property grid and all the BWPs/Channels use this numerology.

Only single numerology is supported for PRACH carrier.

Bandwidth

Choices: Based on the Table 5.3.2-1 and 5.3.2-2 in 38.104.

Default: FR1 100M

Select the Bandwidth configuration for the carrier.

When bandwidth changes, the MaxRB (for single numerology mode) or N_grid_size(for multiple numerologies mode) is automatically updated based on the table in TS38.101-1 for FR1 and TS38.101-2 for FR2.

Numerology

Default: µ = 1: 30 kHz

Select the numerology for current carrier in Single Numerology mode.

This parameter is only visible in Single Numerology mode, and it will determine the numerology of all the channels/BWPs in this carrier.

Max RB for 15 kHz / 30 kHz / 60 kHz

Range: Related to the numerology.

Default: 273

Set the maximum number of RB for current numerology of the carrier in Single Numerology mode.

This parameter is only visible in Single Numerology mode, it determines the bandwidth of current carrier, the center of carrier is assumed at the middle of whole RB range if k0 is 0, and the N_grid_start for selected numerology is 0.

k0 for 15 kHz / 30 kHz / 60 kHz

Range: -6, 0, 6

Default: 0

Set the k0 for current numerology of the carrier in Single Numerology mode. It is used to adjust the center of carrier.

Frequency Offset of Point A

Display the relative location of Point A (in Hz) from the middle of carrier.

Configured Bandwidth

Display the occupied bandwidth of the carrier. It is calculated by the maximum bandwidth between each enabled numerology.

Base Sample Rate

Display the base sample rate of the carrier. It is a suitable sample rate for the current carrier.

4. Power Definition

Power Definition Type

Choices: Total Power | SS-RSTP

Default: Total Power

Select the power definition type. If Total Power is selected, the power reference is Amplitude of Instrument, and SS-RSTP is automatically calculated. If SS-RSTP is selected, power reference is the SSS symbol of first active SS Block, and Amplitude of Instrument is automatically calculated by SS-RSTP.

To set/get SS-RSTP, all the carriers should be downlink carrier with SS/PBCH enabled, otherwise the power definition type is fixed to Total Power and SS-RSTP is shown as N/A.

The SS-RSTP may not be correct if the waveform configuration is complicated.

The Power Boosting of Carrier is read-only and be automatically coupled when Power Definition Type is SS-RSTP.

SS Reference Signal Transmit Power (SS-RSTP)

Range: -200 dBm to 30 dBm

Default: -45.15 dBm

Set or get the resource element power of SSS symbol of the first active SS Block. If Power Definition Type is Total Power, SS-RSTP is automatically calculated by the Amplitude of Instrument. If Power Definition Type is SS-RSTP, the Amplitude of Instrument is automatically calculated by SS-RSTP.

If the calculated Amplitude of Instrument is out of the range, there will be an error.