A Threshold Detection Method of DSSS Signal Based on STFT

机译：基于STFT的DSSS信号阈值检测方法

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摘要

Based on the periodicity of DSSS signal's Short-Time Fourier Transform (STFT) spectrum, a periodical variance threshold searching method of periodical pulse is presented. To the IS-95CDMA signal, when SNR is -13dB, its detection probability is above 89%. This method doesn't use any prior information such as signal's carrier frequency, spreading code and etc. It is easy to implement and to use in practice.

机译：基于DSSS信号的短时傅立叶变换（STFT）频谱的周期性，提出了一种周期性脉冲阈值阈值搜索方法。对于IS-95CDMA信号，当SNR为-13dB时，其检测概率为89％以上。该方法不使用任何先验信息，例如信号的载波频率，扩频码等。它易于实现和在实践中使用。

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来源
《IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications vol.2; 20050808-12; Beijing(CN)》|2005年|P.879-882|共4页
会议地点 Beijing(CN)
作者
Zhijin Zhao; Zheng Sun; Fei Mei;
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作者单位

Hangzhou Dianzi University, Hangzhou, Zhe Jiang 310018, China;

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会议组织
原文格式 PDF
正文语种 eng
中图分类无线通信;
关键词
direct sequence spread spectrum (DSSS)signal; spread spectrum communication; DSSS detection; detection without code; short-time fourier transform (STFT);

机译：直接序列扩频（DSSS）信号;扩频通信; DSSS检测;无代码检测;短时傅立叶变换（STFT）;

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2. The study on the detection methods of DSSS/QPSK signal based on a slice of the fourth-order moment [J] . ZHAO ZHIJIN, JIE TINGTING, WU JIA, WSEAS Transactions on Communications . 2006,第5期

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A Threshold Detection Method of DSSS Signal Based on STFT

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