Transmit and Capture
Configure your NI™ USRP™ radio as a high-speed baseband transmitter, baseband receiver, or baseband transceiver for transmitting or capturing IQ data over the air. Use the captured data to analyze, simulate, test, and validate wireless systems.
In addition, you can synchronize the timing and phase of your operations to achieve precise alignment across multiple RF channels on a single radio or across multiple radios.
Objects
basebandReceiver | Configure SDR as baseband receiver (Since R2022a) |
basebandTransceiver | Configure SDR as baseband transceiver (Since R2022a) |
basebandTransmitter | Configure SDR as baseband transmitter (Since R2022a) |
basebandPhaseAnalyzer | Measure relative phase offsets between baseband waveforms (Since R2026a) |
Functions
Apps
| Wireless Waveform Generator | Create, impair, visualize, and export modulated waveforms |
| 5G Waveform Analyzer | Analyze and visualize imported or captured 5G waveforms and export analysis results (Since R2024b) |
| WLAN Waveform Analyzer | Analyze, visualize, and take measurements from WLAN waveforms (Since R2024a) |
Topics
- Baseband Sample Rate in NI USRP Radios
Set the baseband sampling rate for your radio.
- Time-Synchronize Operations
Control the timing of operations on your radio and synchronize multiple radios. (Since R2025a)
- Phase-Synchronize Operations
Configure LO sharing and measure phase offsets between RF channels. (Since R2025a)
Featured Examples
Capture from Frequency Band
Capture IQ data using single radio antenna and plot the frequency spectrum of the captured data.
Transmit Waveform
Transmit generated waveform using single radio antenna.
Loopback Transmit and Capture
Transmit and capture generated waveform using single radio.
Evaluate Host Capture Performance
Check your host performance capability for capturing data using the baseband receiver.
Capture Wideband Spectrum by Combining Data from Multiple Antennas
Capture and plot a wideband spectrum by combining received data from multiple antennas.
Transmit App-Generated Wireless Waveform Using Radio Transmitters
Transmit generated waveform over the air using a radio transmitter available in the Wireless Waveform Generator app.
Wideband Spectrum Analysis
Capture a wideband signal and analyze the captured data with the Signal Analyzer app.
Calibrate Radio Gain for Signal Capture
Configure the front-end radio gain of your SDR hardware for your local environment.
Save Captured Signal with Metadata to Baseband File
Capture a signal from the air and save the captured signal to a baseband file with metadata that includes a custom label.
Estimate Direction of Arrival Using MUSIC Algorithm and TwinRX Daughterboards
Estimate the direction of arrival of a signal with a multiple signal classification (MUSIC) algorithm using a USRP X310 radio with TwinRX daughterboards.
Capture 1.6 GHz Bandwidth Spectrum Using Multiple Antennas
Capture and plot a spectrum with a 1.6 GHz bandwidth by combining data from multiple antennas using a USRP X410 radio.
Explore 400 MHz 6G Waveform Using USRP X410
Generate, transmit, capture, and analyze a large-bandwidth 6G candidate waveform.
5G NR Waveform Capture and Analysis Using Software-Defined Radio
Generate and transmit a 5G NR waveform continuously over the air using a supported software-defined radio.
Recover and Analyze Packets in 802.11 Waveform
Blindly detect, decode, and analyze IEEE® 802.11™ packets in a waveform.
GNSS Signal Transmission Using Software-Defined Radio
Generate GNSS waveform and transmit it using SDR.
DVB-S2 Transmitter Using Software-Defined Radio
Generate DVB-S2 PL frames and transmit them using SDR.
DVB-S2 Receiver Using Software-Defined Radio
Capture DVB-S2 waveform using SDR.
Identify LTE and NR Signals from Captured Data Using SDR and Deep Learning
Use a spectrum sensing neural network to identify LTE and NR signals from wireless data you capture over the air.
Capture and Label NR and LTE Signals for AI Training
Scan, capture, and label bandwidths with 5G NR and LTE signals.
