将A序列四相双极性码与常用二相双极性码的性能作了比较。
The performance of period quarternary bipolar codes based on Family a is compared with that of binary bipolar codes usually to be used.
比较结果表明，双极性地址码方案可提高系统性能；另外，提高光功率还可改善系统性能。
The results show that the scheme of the bipolarity address code and the higher laser power can improve the system performance.
阐述了该系统的设计思想和实现方法，详细分析了该系统的工作原理和单极性不归零码与双极性归零码的相互转换方法。
It states designing idea and realizing method of the system, analyses in detail the working principle of the system and mutual transforming method of NRZ code and AMI code.
结果显示：理论上采用双极性纯随机序列作为地址码可以使多址干扰达到最小，而在实际应用中伪随机m序列作为地址码也使多址干扰趋向最小。
The results show that MAI is minimized if pure random sequences are used as address codes, and m sequences are appropriate substitutes for pure random sequences in practice.
结果显示：理论上采用双极性纯随机序列作为地址码可以使多址干扰达到最小，而在实际应用中伪随机m序列作为地址码也使多址干扰趋向最小。
The results show that MAI is minimized if pure random sequences are used as address codes, and m sequences are appropriate substitutes for pure random sequences in practice.
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