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SDR_FM_Radio

npm

Using Software Designed Radio to transmit & receive FM signal.

Transmitter and Receiver hardware : Zedboard (Xilinx Zynq®-7000) + AD9361 (Analog Device-FMCOMMS3)

Hardware

Software needed :

  • Matlab R2017b
  • support package for Xilinx Zynq-Based Radio (R2017b version)

Before executing this code, please follow this tutorial to install support package for Xilinx Zynq-Based Radio in Matlab.

Simulink Diagram :

Open FM_radio_TX.slx Simulink model.

Double click From Multimedia File block and edit the path to import the example music files.

Run FM_radio_TX.slx to transmit FM signal.

GUI_TX_Simulink_Block_Diagram.png

GUI :

Transmitter (Zedboard + AD9361)

  • Center Frequency Setting

Default : 100 MHz

Notice : antenna length must be light speed / Center Frequency / 2 = 3*10^8 / 100*10^6 / 2 = 1.5 meters

(Half wave length) for better transmitting in this example

  • Music Time Scope

  • FM TX Signal Spectrum

Receiver (Zedboard + AD9361)

Run FM_radio_RX.m to receive FM signal.

Receiver (Mobile Phone)

Run FM app in your mobile phone

Video Demo : https://www.youtube.com/watch?v=N0qS5glipiM

Signal Parameters

Center Frequency 100 MHz
Sample Rate (Bandwidth) 960 KHz
Frequency Deviation 75 KHz
Pre-emphasis Filter Time Constant 7.5e-5 s
Audio Sample Rate 48 KHz
PC Host IP address 192.168.3.1
TX IP address 192.168.3.2

Things to try yourself :

  • Turn the switch to change the music.

  • Change the carrier frequency.

  • Import your own music (Notice : audio sample rate must be 48000 Hz in this example)