Multiple interference suppression with CPS coding scheme over asynchronous optical CDMA system

Abstract

A Complete complementary/prime/shifted prime (CPS) code family for the optical code-division multiple-access (OCDMA) system is proposed. Based on the ability of complete complementary (CC) code, the multiple-access interference (MAI) can be eliminated via Spectral Amplitude Coding (SAC) OCDMA system under asynchronous transmission. By utilizing the shifted prime (SP) code in the SAC scheme, the hardware implementation of encoder/decoder can be simplified with reduced number of optical components, such as arrayed waveguide grating (AWG) and Fiber Bragg grating (FBG). This system has a superior performance as compared to previous bipolar-bipolar coding OCDMA systems.