Visible light communication — 3

Need to send a text message from a room to another room which are using random messages for the both rooms independently in the previous codes using ofdm modulation techniques, try to get the text message o in second room. Note: Simplest way is changing 10-15 lines of code in the ofdmfunc.m file which is for room one and put the same code in room two ofdmfunc but input message is the room one detected message all the files are provided by me but need to change the code to get the text meesage output.