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Creating 802.15.4 SUN OFDM Waveforms

This following example procedure describes how to configure, generate, and download an 802.15.4 SUN OFDM waveform to your instrument.

The sample 802.15.4 SUN OFDM signal uses the 400 Kb/s data rate, which corresponds to OFDM Option 2 and MCS level 3 (equal to Rate value), and a message of 72 octets plus a 4 octets CRC. The OFDM Header uses the 50 Kb/s data rate (BPSK 1/2-rate coded with 4x frequency repetition), which corresponds to MCS level 0. The PIB attribute value of phyOFDMInterleaving is set to zero.

In this example, the frame length is 76 octets. Its payload data will be encoded using QPSK modulation, 1/2-rate coding (Rate field value = 3). The scrambler index will be the first one (Scrambler ID = 0).

  Number of OFDM Symbols
Variable (6 octets = Option 2) Variable 6 bits Variable
SHR PHR (6 OFDM Symbols) PHY Payload
STF LTF Rate Reserved Frame Length Reserved Scrambler Reserved Header Check Sequence (8-bit HCS) Tail PSDU Tail PAD
    00011 0 00001001100 00 00 0 1111 1101 all 0 message + 4 octets CRC all 0 all 0

  1. Open the software. The system configuration wizard appears.

  2. Configure the hardware system.

    1. Select New hardware configuration and highlight your instrument. Click OK.


    2. Highlight MXG/EXG/ESG/PSG Signal Generator and click Next.


    3. Highlight New and click Next.


    4. Enter the IP address of your signal generator and click Next.


    5. Verify the hardware connection and click Next.
    6. Enter the name of the hardware system and click Finish.

  3. Click Hardware in the tree view and check your signal generator has installed the license for N7610C Signal Studio for IoT 2025.

  4. Click Instrument in the tree view and configure the instrument parameters, such as frequency and amplitude.

  5. Click Waveform Setup in the tree view and select 802.15.4 SUN OFDM format.

  6. Click 802.15.4 SUN OFDM in the tree view and configure the waveform parameters.

  7. Click the Generate button.

  8. Click the Download button to download the waveform to your instrument. Or you can export the waveform as following steps.

  9. Under the File menu, select Export Waveform Data.

  10. Name the waveform file and save it to your PC.

  11. Copy the waveform file to a portable USB storage device.

    This would be a good time to also save a backup copy of the waveform file.

  12. Insert the USB storage device into a USB port on the controlling PC and copy the waveform file to the proper directory, as described in the instrument's documentation.