Performance Analysis of Optical CDMA Systems

This book presents the effect of dispersion property of optical fiber and multiple access interference (MAI) due to unique signature codes in the optical code division multiple access (OCDMA) systems. A mathematical analysis is presented to evaluate the effect of fiber chromatic dispersion on the bit error rate (BER) performance of a direct sequence optical code division multiple access system with intensity modulation direct detection transmission link using sequence inverse keying optical correlator receiver. MATLAB simulations are used to presents signal-to-noise ratio (SNR) versus received optical power (ROP) plot for various numbers of users. It can be done for the ROP v/s BER for different lengths of single mode optical fiber with consideration the effect of chromatic dispersion index. Also visualize what amount of transmitted power is required in order to obtain a BER of 10-9 when the length of the optical fiber is increased. It noticed that when the fiber length is decreased, the index of chromatic dispersion of the optical fiber increases.