Modified Synchronous Square Prime Code for SAC-OCDMA Systems Using New Partial Balanced Detection Technique

In this paper, we have proposed a new code families for spectral amplitude coding optical code division multiple access (SAC-OCDMA) systems. It is referred as modified synchronous square prime code (MSSPC).The proposed new code with ideal in-phase cross-correlation (IPCC) is obtained by modifying the former code. the proposed new partial balanced detection technique utilizing MSSPC can eliminate multiple access interference (MAI) and inhibit phase induced intensity noise (PIIN).Our results show that the code length required by MSSPC is the shortest compared to multi-diagonal (MD) code, zero cross-correlation (ZCC) code, enhanced multi diagonal (EMD) code and generalized matrix partitioning code (GMPC) when to support the same number of users. Under the same conditions, the bit error rate (BER) of the MSSPC system will decrease as the increase of the code weight or the number of mapping. For identical weight and similar code length, MSSPC can support more active users as compared with partitioned diagonal code (PDC).