test.m

stbc_ofdm(time)

clc
clear all
SNR_dB=2:2:10
n=length(SNR_dB);
for i=1:1:n
    Pb1(i)=stbc_ofdm(SNR_dB(i));  
    Pb2(i)=ofdm(SNR_dB(i));
   
end
semilogy(SNR_dB,Pb1,'r:o',SNR_dB,Pb2,'b:d')