Two-Antenna LTE SIB1 Transmission Using USRP®-Based SDR
This example shows how to use both channels of the USRP® B210, X300 or X310 to transmit a two-antenna LTE waveform generated by LTE Toolbox™. The generated waveform includes the SIB1 message and all physical channels and signals required to decode it.
LTE Toolbox can be used to generate standard-compliant baseband IQ downlink and uplink reference measurement channel (RMC) waveforms and downlink test model (E-TM) waveforms. These baseband waveforms can be modulated for RF transmission using SDR radio hardware such as the USRP®-based radio.
This example generates eight frames of a baseband RMC waveform using the LTE Toolbox which also includes the SIB1 message. Then, the example sends a continuous RF LTE waveform by looping transmission of these eight frames on the USRP® radio hardware for a specified time period.
If you have a second SDR platform, you can capture the transmitted waveform and decode the MIB and SIB1 messages using the companion example Two-Antenna LTE Cell Search, MIB, and SIB1 Recovery Using USRP-Based SDR.
Use the Add-On Explorer to install the required support package.
More information about other supported SDR platforms can be found here.
The full example description and source code can be found in the Communications Toolbox Support Package for USRP Radio documentation under the name LTE SIB1 Transmission over Two Antennas (Communications Toolbox Support Package for USRP Radio).
Universal Software Radio Peripheral® and USRP® are trademarks of National Instruments Corp.