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为了构造更多符合码分多址(CDMA)系统的扩频序列,提出了两种方法.方法1,提出了通过对零相关区长度进行赋值获得一类新的移位序列,在此基础上,利用完备序列的相关特性和Hadamard正交矩阵在结构上的特点,结合交织技术构造出新的零相关区周期互补序列集.此方法可根据不同系统的要求去调节零相关区的长度,使其应用范围更广.方法 2,将零相关区序列集作为初始序列,结合了Hadamard矩阵与交织技术,扩大了零相关区的长度.两种方法均扩大了序列集的数目,在准同步码分多址系统中可以支持更多用户同时工作.“,”We propose two methods for constructing more spread sequences that conform to code-division multiple access (CDMA) systems. The first method involves the construction of new shift sequences by assigning different values to the length of the zero correlation zone. Based on these shift sequences, we construct new periodic complementary sequence sets with a zero correlation zone by utilizing the correlation properties of the perfect sequence, and combining the structural characteristics of the Hadamard orthogonal matrix with the interleaving technique. This method can adjust the length of the zero correlation zone, based on the requirements of different systems to accommodate a wider range of applications. In the second method, zero-correlationzone sequence sets are used as the initial sequence, and the Hadamard matrix is combined with the interleaving technique to expand the length of the zero correlation region. In both methods, the number of sequence sets is expanded so that more users can be supported at the same time in quasi-synchronous CDMA systems.