Hybrid 2D codes have been designed, implemented and investigated for optical code division multiple access (OCDMA) system. For analysis, the codes that have been chosen in this manuscript are algebraically constructed codes, prime codes, hybrid W/T codes and optical orthogonal codes (OOCs). To investigate the performance of codes in detail, on-off keying method has been employed on all codes and combinatorial analysis has been implemented. Hard limiting error probability (HEP) and other hit probability equations have been mentioned to perform the analysis. Based on the performance analysis and simulation results, hybrid W/T code has outperformed all other optical family codes that have been taken into consideration. Emb-M/MPHC from hybrid W/T code family has shown lower bit error rate (BER) curves for increasing number of users count. The main attributes to its superior performance in comparison to all other codes have been its better code design and properties it possess.

中文翻译：

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用于光学CDMA系统的混合2D代码的设计和研究

已经为光码分多址（OCDMA）系统设计，实现和研究了混合2D码。为了分析，在本手稿中选择的代码是代数构造的代码，素数代码，混合W / T代码和光学正交代码（OOC）。为了详细研究代码的性能，已对所有代码采用了开关键控方法，并进行了组合分析。硬极限误差概率（HEP）和其他命中概率方程式已被提到进行分析。根据性能分析和仿真结果，混合W / T代码的性能优于所有已考虑的光学系列代码。混合W / T代码系列的Emb-M / MPHC显示了较低的误码率（BER）曲线，可用于增加用户数量。