首页>
外国专利>
Device and method for generating quaternary complex quasi-orthogonal code and spreading transmission signal using quasi-orthogonal code in CDMA communication system
Device and method for generating quaternary complex quasi-orthogonal code and spreading transmission signal using quasi-orthogonal code in CDMA communication system
展开▼
机译:CDMA通信系统中生成四次复准正交码并使用准正交码扩展传输信号的装置和方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method for generating a quaternary complex quasi-orthogonal code in a CDMA communication system is disclosed. The method comprises generating an M-sequence and then generating specific sequences having a good full correlation property with the M-sequence; generating a column permutation function for converting the M-sequence to a Walsh code; generating candidate masks by column shifting the specific sequences with the column permutation function; generating quasi-orthogonal code representatives by operating the candidate masks and the Walsh codes having the same length as that of the candidate masks; and selecting a quasi-orthogonal code satisfying a partial correlation with the Walsh codes, out of the generated quasi-orthogonal code representatives, and selecting a mask related to generation of the selected quasi-orthogonal code.
展开▼