Radio I/O

Transmit and receive real-world RF signals

When transmitting or receiving real-world RF signals, use I/O properties and techniques to perform single and multichannel I/O, detect lost samples, apply burst mode buffering, and repeatedly transmit a waveform.

Functions

sdrrxCreate receiver System object for Xilinx Zynq-based radio hardware
sdrtxCreate transmitter System object for Xilinx Zynq-based radio hardware
captureCapture contiguous RF data using Xilinx Zynq-based radio hardware
designCustomFilterDesign custom filter for Analog Devices AD9361/AD9364 RF chip
infoSynchronize receiver or transmitter radio settings with radio hardware
transmitRepeatDownload waveform signal to radio and repeatedly transmit it over the air

Objects

comm.SDRRxAD936xReceive data from AD936x-based Zynq radio hardware
comm.SDRRxFMCOMMS5Receive data from FMCOMMS5 Zynq radio hardware
comm.SDRTxAD936xSend data to AD936x-based Zynq radio hardware
comm.SDRTxFMCOMMS5Send data to FMCOMMS5 Zynq radio hardware

Blocks

AD936x ReceiverReceive data from AD936x-based Zynq radio hardware
AD936x TransmitterSend data to AD936x-based Zynq radio hardware
FMCOMMS5 ReceiverReceive data from FMCOMMS5 Zynq radio hardware
FMCOMMS5 TransmitterSend data to FMCOMMS5 Zynq radio hardware

Topics

Radio I/O Properties and Techniques

Channel I/O

Overview of available radio channels to send and receive data.

Repeated Waveform Transmitter

Use a transmitter System object™ for repeated signal transmission.

Capture Over-The-Air Signals

Record RF signals for post-capture processing in MATLAB®.

SDR Receiver Sample Times

Set sample times in receiver blocks or receiver System objects.

Data Frame Lengths

Set data frame length in receiver blocks or receiver System objects.

Detect Underruns and Overruns

Detect underruns and overruns using the lost sample indicator.

Burst Mode

To achieve real time performance, enable burst mode.

Apply Conditional Execution

To determine whether you receive valid data from the radio hardware, apply conditional execution.

Digital Modulation

QPSK Transmit Repeat Using Analog Devices AD9361/AD9364

Continuously transmit QPSK data using the repeated waveform transmitter functionality.

QPSK Transmitter Using Analog Devices AD9361/AD9364

Transmit QPSK modulated messages onto a carrier with a specified center frequency.

QPSK Receiver Using Analog Devices AD9361/AD9364

Receive and demodulate QPSK modulated messages.

802.11a Transmission and Reception Using Analog Devices AD9361/AD9364

Transmit and receive encoded WLAN packets using a single SDR device.

Diagnostics

Receive Tone Signal Using Analog Devices AD9361/AD9364

Perform a simple loopback of a complex sinusoid signal.

Frequency Offset Calibration Receiver Using Analog Devices AD9361/AD9364

Determine frequency offset between SDR devices using a transmitter and a receiver.

Frequency Offset Calibration Transmitter Using Analog Devices AD9361/AD9364

Determine frequency offset between SDR devices using a transmitter and a receiver.

Troubleshooting

Common Problems and Fixes

Resolve issues encountered during installation or while using the I/O mode features of the support package.

Featured Examples