i had plotted two ber curve for different subcarriers......
1) the ber curve move to left when i increase the no. of subcarriers.
2) the ber curve move to right when i increase the no. of subcarriers.
i just confuse....which one is the correct one? increasing in no. of subcarrier would definitely causing ICI to increase....so is that causing the 1) correct?
or...?
Added after 1 hours 57 minutes:
or increase no. of subcarrier will improve the SNR?
Re: OFDM- increase subcarriers will produce a better BER cur
changing the number of subcarriers may incur a difference in the symbol duration. therefore, the configuration with a longer symbol duration has a higher SNR.