This paper discusses the despread of low signal to noise ratio of the direct sequence (DS) spread spectrum signals using intermediate-frequency recirculation summation loop (IFRSL).
本文讨论了用中频积累法实现低信噪比直接序列扩频信号的解扩。
The design of bit decision algorithm is a key technique for the DS spread spectrum sequence to be received correctly.
码元判决算法的设计是扩频序列能被正确接收的关键技术之一。
By exploring the phase information among symbols of the Direct Sequence Spread Spectrum (DS-SS) signal, a novel de-noising approach, used in low signal noise ratio environment, is presented.
利用DS -SS信号符号间相位信息，提出了一种可工作于低信噪比下的直接序列扩谱(DS - SS)信号噪声抑制方法。
Direct sequence spread spectrum (DS SS) technique has been widely used in military communications systems.
在军事通信中，直扩技术由于其诸多优点而获得了广泛的应用。
The difference between UWB and the traditional direct sequence spread spectrum technology was analyzed, and the simulation models of TH-IR and DS-IR systems were installed.
首先分析了超宽带技术与传统的直接序列扩频技术的区别，然后建立了TH -IR和DS - IR超宽带系统的仿真模型，得到两种IR系统在多种干扰条件下的误码率性能。
In this dissertation, the author mostly research on Direct Sequence Spread Spectrum (DS-SS), the most ordinary one within Spread Spectrum technologies.
扩频通信技术中，最常见的是直接序列扩频通信(DS - SS)系统，本论文所研究的就是这一类通信系统。
In this paper, a blind despreading algorithm is proposed for the synchronous multi-user long-code Direct Sequence spread Spectrum (DS-SS) signals in low signal to Noise Ratio (SNR) scenarios.
针对同步多用户长码直扩信号，该文提出了一种低信噪比条件下的盲解扩算法。
The results show that:the direct sequence spread spectrum signals, frequency hopping signals and DS/FH hybrid spread spectrum signals are correct;
实验结果表明：产生的直扩信号、跳频信号和DS／FH混合扩频信号正确；
The results show that:the direct sequence spread spectrum signals, frequency hopping signals and DS/FH hybrid spread spectrum signals are correct;
实验结果表明：产生的直扩信号、跳频信号和DS／FH混合扩频信号正确；
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