摘要
耳形零相关窗的概念在2004年被首次提出,这种序列对在非周期相关函数的中间及两端部分都同时具有零相关窗。在近似同步CDMA系统中,如果系统的同步误差能够控制在耳形零相关窗范围内,该序列对理论上能够完全消除多径及多址干扰。给出了具有耳形零相关窗的二元序列对的一些结论,并在二元序列对设计方法的基础上给出了四相序列对设计的方法。
The idea of ear zero correlation windows has been proposed in 2004 firstly. These sequence pairs can produce zero correlation windows both in the middle part and two terminal parts of their aperiodic correlation functions. In asynchronous CDMA communication systems, these sequence pairs appear to be completely removing inter-symbol interference and multi-user interference if the maximum delay is shorter than the length of the ＂Ear Windows＂. This paper gives some results of the binary sequence pairs with ear zero correlation windows. Based on the method of binary sequence pairs design, we also present new design methods of quadriphase sequences pairs.
出处
《重庆邮电学院学报（自然科学版）》
2006年第2期208-211,共4页
Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)
基金
国家自然科学基金资助(60272083)
关键词
多址干扰
多径干扰
耳形零相关窗
四相序列对
multi-user interference
inter-symbol interference
ear zero correlation windows
quadriphase sequences pairs
