PERFORMANCE ANALYSIS OF MWOOC AND OCFHC/OOC OPTICAL ORTHOGONAL CODES

Abstract

With the rising challenges of coping up with the effective utilization of bandwidth due to increasing number of users in communication system, it is our utmost requirement to reduce the probability of bit error i.e. bit error rate as far as possible. The large bit error rate degrades the signal to noise ratio at the receiver end. The bit error rate arises due to the fact that when various user communicate using a single channel, there arises significant amount of interference and crosstalk in channel which are responsible for the reason of degradation of signal to noise ratio at receiver. Here we are introducing couple of coding techniques which reduce the bit error rate by using optical CDMA techniques. These techniques are MWOOC and OCFHC / OOC codes. The bit error rate of the system employing these coding techniques are evaluated and then there performance and their impact on decreasing in effective bit error rate of the system is evaluated for several users communicating over a channel. Their mathematical analysis and simulation is done which reveals the effectiveness of these coding techniques in reducing the bit error rate of systems.