NR contains key attributes which encompass the most important aspects of an NR waveform, and should be set according to specification before starting the basic generation/analysis. The basic signal settings are as follows.

Frequency Range (FR1/FR2)

The NR standard contains different selectable options based on the operating frequency. Select FR1 for sub-6 GHz and FR2 for mmWave carrier frequencies.

  • Range 1: 450 MHz – 6000 MHz
  • Range 2: 24250 MHz – 52600 MHz

Link Direction (UL/DL)

The link direction parameter sets the transmission direction to either Uplink or Downlink.

Bandwidth

NR signals have multiple options for carrier bandwidth along with the concept of bandwidth parts for mixed numerologies on the same carrier frequency. Channel bandwidth determines the overall bandwidth, comprised of bandwidth parts. Bandwidth parts are a subset of contiguous physical resource blocks within a carrier with a given numerology.

Valid values for channel bandwidth range from 5 MHz to 400 MHz. Options will populate based on the frequency range.

Subcarrier Spacing

To scale with the variable signal bandwidths, NR supports different selectable subcarrier spacing options.

Based on the selected channel bandwidth, this drop-down list will only show supported values. In general, valid values are 15 kHz, 30 kHz, 60 kHz, and 120 kHz.

Modulation Type

Supported values are QPSK, QAM16, QAM64, QAM256, and QAM1024 for CP-OFDM modulation and PI/2 BPSK, QPSK, QAM16, QAM64, QAM256, and QAM1024 if the Transform Precoding is enabled.

Transform Precoding (CP-OFDM/DFT-s-OFDM)

NR supports both CP-OFDM and DFTs-OFDM signal types. DFTs-OFDM waveforms are accomplished by adding transform precoding in front of the CP-OFDM mapping. Setting Transform Precoding to enabled will result in DFTs-OFDM waveforms instead of CP-OFDM waveforms.

Slot Allocation

NR leverages flexible slot capabilities between Uplink and Downlink to allow for switching on a per-slot basis. You can define the indices of the allocated slots using this parameter. The format is defined in the section Range Format Specifiers.

Valid values are between 0 and (Max. Slots in Frame - 1). The maximum number of slots in the current frame is displayed in the Max. Slots in Frame field. It depends on the selected Subcarrier Spacing.

To configure an FDD signal, allocate all slots within the frame. Otherwise, the signal will use a TDD format.

RB Allocation

Defines the range of the allocated Resource Blocks for PUSCH. The format is defined in the section Range Format Specifiers.