Performance of MS-code of OCDMA over VLC System

This paper discusses the performance of Multiservice Optical Code Division Multiple Access (MS-OCDMA) in the Visible Light Communication (VLC). There are several issues in using some Spectral Amplitude Coding-Optical Code Division Multiple Access (SAC-OCDMA) codes such as long code weightage (which limits the bandwidth) as well as the issue of code inflexibility of code weight structure (which led to less feasible system). The application of MS-code in VLC was investigated due to its shorter code length as well as its flexibility on various numbers of basic users without changing the code weight. The system was observed using the Optisys 7.0. software. Results taken from this system was collected and compared with the other codes from OCDMA such as Khazani Syed code (KS-code) and Modified Quadratic Congruence code (MQC-code). All codes were compared at bit error rate (BER) of 10−9 where the system could support video transmission. The results showed that MS-code can support up to 5m, 0.8m longer than KS-code at bit error rate of 10−9 while MQC can only support BER of 10−8 at back-to-back performance.