This simple OFDM demo is based on LTE downlink format for testing SDR hardware.
Using Software Designed Radio (SDR) to transmit OFDM signals at 2.4 GHz.
Transmitter and Receiver hardware : Zedboard (Xilinx Zynq®-7000) AD9361 (Analog Device-FMCOMMS3)
- Matlab (R2018a version in this example)
- Libiio Library
- Zynq Linux Image (2015_R2-2016_07_26 version in this example)
Please open Matlab windows to run
Main_self.mfor one transceiverMain_TwoBoard.mfor transmitter and receiver
Video Demo : https://youtu.be/jywNhMAHi7Y
| Center Frequency | 2.4 GHz |
|---|---|
| Bandwidth | 10 MHz |
| Sampling Rate | 15.36 MS/s |
| Mapping | 64 QAM |
| FFT Size | 1024 |
| Cyclic Prefix Length | 80 (symbol#0), 72(symbol#1~6) |
| Resource Block | 50 |
| Samples Per Frame | 307200 |
| PC Host IP address | 192.168.3.1 |
| TX IP address | 192.168.3.6 |
| RX IP address | 192.168.3.7 |
Edit /etc/init.d/rc.local file in Linux OS
## Change MAC address
sudo ifconfig eth0 down
sudo ifconfig eth0 hw ether 00:0A:35:00:01:23
sudo ifconfig eth0 up
Then, use router DHCP hand setting mode to distribute network configuration parameters :
To shut down the hardware properly, execute the commands below.
Enter Linux by ssh :
Default password :
analog
Shutdown command :
sudo shutdown -h now