Study and Implementation of Codes in Optical CDMA System

Abstract

CDMA (Code Division Multiple Access) has been extensively studied in the context of microwave communications as it allows users to access any shred channel randomly at any arbitrary time. Its use in optical fiber networks has attracted considerable attention since 1985. In long-haul optical fiber transmission links and networks, the information consists of a multiplexed aggregate data stream originating from many individual subscribers and normally is sent in a well-timed synchronous format. OCDMA is a technology to realize multiplexing transmission and multiple access by coding in the optical domain, which supports multiple simultaneous transmissions in the same time slot and the same frequency. It is another technology of multiplexing and multiple access that is potentially promising technique for optical networks in the future, and especially, due to its easy access and flexible network structure, it is very applicable to the access network. In this project , we have studied different codes(both 1D and 2 D) that helps to analyse the performance of an OCDMA system.