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📡 Using Software Designed Radio to transmit LTE downlink signals at 2.4 GHz

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MeowLucian/SDR_Matlab_LTE

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SDR_Matlab_LTE

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)

Program GUI_RX

Software needed :

Code Structure :

Please open Matlab windows to run

  • Main_self.m for one transceiver
  • Main_TwoBoard.m for transmitter and receiver

GUI_RX

Program GUI_RX Video Demo : https://youtu.be/jywNhMAHi7Y

Program GUI gif

TX RX Hardware Parameters

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

The way to change Hardware IP / Mac address

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 : Router setting

Hardware shut down process

To shut down the hardware properly, execute the commands below.

Enter Linux by ssh :

ssh analog@192.168.3.X

Default password :

analog

Shutdown command :

sudo shutdown -h now