在OCDMA系统中,系统地址码的相关值是直接影响码字性能的关键参数.对地址码相关值分布的研究是一项重要的工作.通过严密的代数运算以及统计分析,对Kwong所提出的PC相关值分布公式进行了一项小的修正.通过同样的方法,并根据逐步分析和简单的数据预测,得到了新的关于EQC的相关值分布公式.基于该EQC相关值分布公式,计算并比较了不同码字组合情况下所对应的误码率,最后得出采用EQC非零码字可以有效提高码字性能.
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