matlab coding for satellite communication

good wishes scholars,

iam doing my project in satellite communication objective is comparitive study of different channel coding techniques which is a IEEE paper
i have done codings from help of my friend and searched in net,and one of friend suggested me that EDA Board is doing a great work for helping out students,iam not that much well wersed in Matlab so please kindly simulate this program and help me out in results what exactly the simulation does and please explain me about coding rates. how for the gain and snr relates here.

thanks in advance.


please find the file attached herecodings.zip