Fig. 3 shows the performance of the original and
proposed MC-CDMA techniques when both of systems are
worked without zero padding at the transmitter. From these
results, it is found that the proposed system MC-CDMA does
worked with a BER of about 10-4 at SNR=5 dB in comparing
with 20 dB for the Traditional MC-CDMA for the same BER,
which means a gain of about 15 dB. The BER is started at
about 5*10-2 dB at SNR 1 dB for the proposed model, and
about 5*10-1 for the traditional one.