Impact of Multiple-Cell Configuration on Indoor Wireless Optical CDMA System

The purpose of this study is to investigate the impact of multiple-cell configuration on indoor wireless optical CDMA system, and to develop a realistic indoor environment adding path loss along with total noises (e. g. thermal and shot noises) to the channel. A comprehensive mathematical model based on Zero Cross Correlation (ZCC) code is developed to investigate the system performance, considering the effect of received power distribution, RMS delay, and number of user on bit error rate (BER). The results are very promising, as the performances of received power, RMS delay and BER have been significantly improved by employing multi-cell configurations. For instance, the 25-cell configuration could accommodate a larger number of users even with low transmission power. It offered 283% and 52% larger cardinality at the corners and the area between the corner and the center of the room, respectively, in contrast to the 1-cell configuration.