【摘要】 近年来,市场对移动通信容量的需求越来越大,现有系统的容量已不能满足这一需求,三值CDMA系统为解决这一问题开辟了新途径.在此系统中,选择什么序列作为扩频函数是很关键的,其中三值实多项式函数序列和三值m序列都是可采用的伪随机序列,这些研究成果是一个很好的开端,而且三值或多值CDMA移动通信系统必将成为实用的通信系统之一.更多还原

【Abstract】 In recent years, the market demand for mobile communication capacity is increasing, while existing system can’ t meet this demand. Ternary CDMA cellular mobile communication system opens up a new way to solve this problem. In this system, the selection of sequence as frequency-spreading function is very critical. Both ternary real polynomial function sequence and ternary m sequence can be adopted as pseudo-random sequence. The research achievement is a very good beginning. Ternary CDMA mobile communication system will inevitably become one of the practical communication systems.更多还原