Bit Error Performance Analysis of OCDMA

In this paper, the bit error performance of the multiple-users OCDMA(optical code division multiple access) system is analyzed. From the perspective of probability theory, the expression of the bit error rate of the system is given, and the influence of code length, code repetition and number of users on the bit error rate of the system is analyzed. Through the simulation, the results show that as the length of code word decreases, the bit error rate of the system also decreases, with the increase of code repetition, the bit error rate of the system is decreasing, and with the increase of the number of users, the bit error rate of the system is also decreasing.