The Potential of 2-Dimensional Modified-FCC Code in Noise Reduction in OCDMA Network

Abstract

In this paper, the potential of new 2-dimensional code to reduce the multiple access interference (MAI) in OCDMA network is investigated. MAI is a phenomenon that occurs when multiple users transmit their signals simultaneously, and the signals will interfere with each other, resulting in degraded performance. In the meantime, the new 2-dimensional code known as Modified-FCC code is introduced which more efficient, helps reduce the impact of MAI and improves the overall system performance. The code was developed from great combination of 1-dimensional code using spectral/time method. The code performance was test using mathematical approach and simulation at different bit rate, power, and cardinality. As the bit rate increase as well as the code length increase, leading to higher bit error rate such as codelength M=6, BER = 10-69 while M= 64, BER = 10-6. 2D Modified-FCC code may increase the cardinality with higher SNR as compared to other code which can accommodate more than 250 users even at long codelength. The wide eye pattern with BER 10-37, prove that the 2D Modified-FCC have great potential in reducing the noises in the propose optical network system.