**4.2.5 Bit error rate computation**

```
[nErr bErr(i,k)] = symerr(TxDataBit(Is),TrDataBit(Is)); 
end 
end 
fl = figure(l); 
set(fl, 'color',[111]); 
semilogy(SNR_ V,mean(bErr'), 'r-d') 
xlabel('SNR '); 
ylabel('BER') 
grid on; 
hold on;
```
Fig. 10. Bit Error Rate of Adaptive modulated OFDM System
