一种简单的长码周期估计方法

A New Method to Estimate the Period of Long PN Sequence in DS/SS Signal

在直接序列扩频(DS/SS)通信系统中,提出了一种简单的长码周期检测方法.将输入的D S/SS信号进行延迟相乘处理,消除信息数据对PN码周期的影响,应用自相关处理,提取长码周期.理论分析和仿真表明,在信噪比大于-10dB条件下,应用该方法能够简单有效地估计出长码和短码周期.图4,表3,参11.

In direct-sequence spread-spectrum （DS/SS） communications, the detection period of long PN sequence is a difficult problem. A new method to detect the period of long PN sequence is proposed. Delay-and-multiply the inputting DS/SS signal,and the interference of symbol to the PN period detection was cancelled,the auto-correlation was used to detect the period of PN sequence. Results show that the period of long and short PN code can he detected exactly above the S/N of-10 dB by this method. 4figs. ,3tabs., 11refs.