Development of Codes with Non-Zero In-Phase Cross Correlation Code for SAC-OCDMA Systems

This paper presented a new class of code called Modified Non-Zero Cross Correlation (MNZCC) Code for Spectral-Amplitude Coding Optical Code Division Multiple Access. The MNZCC code can be constructed easily for any given number of users, weights and cross correlation (lambda max) with tridiagonal matrix properties. We find that the performance of MNZCC code is better than OCDMA codes such as MDW and MFH. In term of performance, systems with MNZCC code had shown superior performance, where the Bit Error Rate (BER) of MNZCC code is significantly better than OCDMA codes such as MDW and MFH. Fiber Brag Grating filter has been used for the implementing SAC-OCDMA systems. Finally, in term of systems complexity system with MNZCC code with direct detection scheme introduced cost effectiveness due to less number of filter in decoder as well encoder.