OutputPort1=InputPort1;
beta2_smf=-20;
L_smf=2.2;
Rs=10;
Ts=1/Rs;
N_samples_per_symbol=2;
N_symbols=128;
N_symbols_frame=N_symbols/2;
N_samples=N_samples_per_symbol*N_symbols;
FF=（-N_samples/2:N_samples/2-1）/（Ts*N_symbols）;
S_in_t_x=Inpu