The performance enhancement of OCDMA System based on New Zero Cross Correlation (ZCC) Code with OFDM Modulation

Abstract: In order to increase the number of users and data rate, and to reduce the impact of multi access interference (MAI), this study propose the optical code division multiple access (OCDMA) systems with orthogonal frequency division multiplexing modulation (OFDM) based on new zero cross correlation (ZCC) code .The system proposed (OCDMA- new ZCC-OFDM) is compared to the (OCDMA-FCC (Flexible Cross Correlation)-OFDM) in term of SNR and BER. The results showed that the proposed system with the new ZCC code displayed improved performance with an increased number of users up to 120%. The system adopted saved around -3 dBm of power at the receiver. In comparison to (OCDMA-FCC-OFDM) system, this improvement is due to the effect of the good auto/cross correlation properties of new ZCC code.