【摘要】 在二次方一致性的基础上 ,构造了一种容量大、自相关和互相关特性好的码族 研究表明 ,采用这个码族的光码分多址 (OpticalCDMA)系统比波分复用 (WDM )系统拥有大得多的用户数 而且这个码族很适合于异步和多比特率接入的光码分多址系统 据我们了解 ,这种码字用于在光码分多址非相干频域编制中为首次被提出更多还原

【Abstract】 Based on quadratic congruences, a family of codes which have large capacity, good auto correlation and cross correlation properties is constructed in frequency domain. The research shows that the number of available subscribers with the code family is much bigger in the OCDMA (Optical Code Division Multiple Access) system than that in WDM (wavelength division multiplexing) system. Moreover, the code set is very suitable for asynchrony and multi bit rate OCDMA system. To our knowledge, the code set is firstly put forward in frequency domain for OCDMA system using incoherent source.更多还原