基于R-S码的二维OCDMA系统研究

The Investigation of 2-D OCDMA System Based on R-S Code

根据R-S码构造了一种二维码,并按johnson边界条件研究了1===lllca的二维R-S码的码容量,分析结果表明,构造的码渐近为最优码;在只考虑多用户干扰的理想条件下,分析了多波长R-S码的二维OCDMA系统的误码率性能,得到了不同素数p构造的二维R-S码的误码率和并发用户数的关系曲线,为二维OCDMA的进一步研究提供了理论依据。

In this paper, we construct MW R-S code based on Reed- Solomon code, this code belong to 2-D codes, its auto- relativity is zero and the cross- relativity is one. Analyzed the capacity of 2-D R-S code with 1===lllcabased on the Johnson boundary condition, compared with the code we constructed, it shows that the code we constructed is nearly optimal. And we carried on the datum analysis on the performance of the code in 2-D OCDMA system with only considering the multi-user interference, got the curves of BER via the number of simultaneous users in 2-D OCDMA system with different prime p. This result supplies important reference for the further theory investigation on 2-D OCDMA system.