相关序列及其性能比较研究

Comparison of Correlation Sequences

本文对包括巴克码,m序列族,高斯白噪声序列,混沌序列在内的几个相关序列的产生,相互关系进行了介绍,重点分析并比较了它们的相关性。相关序列在现代通信系统中扮演着重要的角色,而且有进一步加强的趋势:好的自相关性将增强序列通信过程中的抗干扰能力;好的互相关性将有效的抑制码间干扰,这两者都有利于提高信号的检测率;而序列中码数的多少直接决定了码分多址通信系统的容量,因此本文的结果对通信系统的设计有实际的参考价值。

All sequences studied in this study have good correlation property （autocorrelation property, cross-correlation property and so on）. The correlation sequences play an important role in the modern communication system and get more and more important with the development of communication technology： good autocorrelation property of the sequence in a communication system can improve the performance of the detector and a communication system can resist against the interference between codes if the used codes have good cross-correlation property. The generations of some correlation sequences are presented. The relationships between them are analyzed and more attention is paid on comparing their correlation property. The result of the study can be used as reference when a practical communication system is to design.