【作者】 张天骐； 周正中；

【Author】 CHANG Tianqi,ZHOU Zhengzhong (Academy of Communication and Information Eng.,UEST of China Chengdu 610054)

【机构】 电子科技大学通信学院140室；

【摘要】 本文论述了谱相关理论在直扩(DS/SS或DS)信号的检测与估计中的应用,提出了一种基于信号空间分集的谱相关累积的算法来实现低信操比DS信号的伪码(PN码)码元宽度的估计,理论分析表明了该算法在较低输入信口噪比条件下能良好工作,而目在分集通道数为8或16时,计算机模拟实现了SNR=-21.6dB的信噪比容限。更多还原

【Abstract】 In this paper,We propose a kind of method which based on the space diversity and spectral correlation of the DS/SS signals,it can solve the difficult problem of chip rate detection and estimation of the FN sequence in the lower SNR DS/SS signals,The theory analysis indicate that these methods can work well on the lower SNR input signals, and the computer simulations realize the SNR threshhold of SNR=-21.6dB,when the branches of space diversity is 8 or 16.更多还原