The design scheme of spread-spectrum system based on sequence pairs is discussed.
并对基于序列偶的扩频通信系统设计方案进行了讨论。
The performance of chaotic spread-spectrum communication systems can be improved by employing these formulas.
利用这些结果可有效提高混沌扩频通信系统的性能。
Based on traditional spread-spectrum watermarking, we discuss an asymmetric watermarking scheme using random-phase-shift.
在传统扩频水印技术的基础上，我们讨论了一种基于相位偏移的非对称数字水印方案。
This paper studies the optimum detection model of the multiplicative spread-spectrum watermark embedded by fixed strength.
对以固定强度嵌入的乘性扩频水印的最优检测模型进行了研究。
An algorithm for the suppression of narrowband interference in the direct sequence spread-spectrum (DSSS) systems is presented.
提出了直接序列扩频通信系统中抑制窄带干扰的一种算法。
The algorithm is applicable to precise measuring of the PN code phase of satellite positioning signals and spread-spectrum ranging signals.
该算法的主要应用领域为卫星定位信号和直序扩频测距信号PN码相位的精确测量。
Original watermark is mapped to watermark information, which can be directly embedded to the host, with spread-spectrum communication technique.
算法将原始水印利用扩频通信技术生成能够直接嵌入的水印信息；
The availability of low orbit satellite spread-spectrum communications is impacted by the complicated radio environment in China and Southeast Asia.
由于中国国内和东南亚地区电磁环境复杂，影响了低轨卫星扩频通信的可用性。
Achieving processing gain as high as possible is one of the important factors that should be taken into account in the design of a spread-spectrum system.
获得尽量高的处理增益是设计扩频系统所需考虑的重要因素之一。
We put forward a method which can easily be realized in DSP and direct sequence spread-spectrum system based on QPSK, it achieved a good performance in tests.
提出了易于在DSP以及QPSK的直接序列扩展频谱系统中实现的方法，并在测试中达到了较好的性能。
When designing a special type small satellite (STSS) communication system with spread-spectrum technology, the fading and the interference must be considered carefully.
对于特种小卫星扩频通信系统，衰落及干扰状况是系统设计时必须考虑的重要方面。
Pseudorandom sequences with ideal two-level autocorrelation functions have important application in spread-spectrum communication, stream cryptography, radar and sonar.
具有二值自相关特性的伪随机序列在扩频通信、流密码、雷达和声纳等领域中具有重要的应用。
This paper proposes a robust watermarking algorithm for volume data based on three-dimension discrete cosine transform(3D-DCT) and spread-spectrum communication technique.
本文基于三维离散余弦变换（3D-DCT）技术和扩频通信技术提出三维体数据鲁棒水印嵌入算法。
In the presence of narrow-band interference (NBI), the performance of direct spread-spectrum systems (DSSS) can be improved by using various interference rejection filters.
在存在窄带干扰时，扩频通信系统的性能可以通过使用各种不同的抗干扰滤波器来进一步提高。
Mainly focus on news features implemented in STMicroelectronics PDP drivers, including constant rising slope and spread-spectrum jitter, and other energy recovery technique.
集中介绍了意法半导体的最新驱动特性，包括恒定上升斜率和展频分散技术的使用，以及新的能量回收技术。
Aiming at the acquisition problem of direct sequence spread-spectrum (DSSS) signals with large Doppler offset, a new method based on fast Fourier transform (FFT) is proposed.
针对具有大多普勒偏移的直接序列扩频信号捕获问题，提出一种基于快速傅里叶变换(FFT)的多普勒和伪码分别并行搜索的捕获新方法。
In the system of spread-spectrum communication, the essential point of demodulating information is to ensure the synchronism of local PN sequence and PN sequence of received signals.
扩频通信系统中，保证本地产生的PN序列与接收信号中的PN序列完全同步，是正确解调信息的关键点。
This paper focuses on the audio watermarking for copyright protection which embeds the binary image data into the time domain of the audio signal based on the spread-spectrum technique.
本文只讨论用于版权保护的，利用扩频技术在时域嵌入二进制图像数据的音频水印技术。
Multipath is one of the major sources in the Spread-spectrum ranging systems.
多径是扩频测距系统的主要误差源之一。
The DS/CDMA digital mobile communication system is based on Spread-spectrum technique and CDMA technique.
扩频技术在码分多址通信中的应用产生了DS/CDMA数字蜂窝移动通信系统。
It consists of three main parts: in the first part, we analyse the effect of multipath on code-tracking loops of receivers in Spread-Spectrum Ranging Systems.
本文分为三个主要部分：第一部分分析了多径对扩频测距系统接收机码跟踪的影响机理。
These efforts contribute to our understanding of the virus, its patterns of spread, and the spectrum of sickness it can cause.
这些努力有助于我们理解这一病毒，其传播模式，以及它可能导致的疾病范围。
It mainly contains the digital modulate system, the SS communication theory and the direct sequence spread spectrum (DSSS) system.
主要是数字调制系统、扩展频谱通信原理和直接序列扩频系统等内容。
There are several difficult problems in the research of spread spectrum FH/DS system.
在研制扩展频谱FH/DS系统时，会遇到一些很困难的问题。
We are getting new data daily, and we are beginning to get an early picture of the clinical spectrum and patterns of spread.
我们每天都得到新的数据，我们也开始初步了解临床情况和传播模式。
The paper finally gives an example of spread spectrum technology in data transfer in Shanghai.
最后举例说明扩频技术在数据传输中的应用。
Spread - spectrum technique has been widely used in the burgeoning individual wireless communication.
扩频技术在新兴的个人无线通信中得到了广泛的应用。
Spread spectrum communication is implemented by a spread spectrum chipset, which is composed of two parts:baseband and RF.
扩频通讯由扩频芯片组来实现，该芯片组由基带和射频两部分组成。
Spread spectrum communication is implemented by a spread spectrum chipset, which is composed of two parts:baseband and RF.
扩频通讯由扩频芯片组来实现，该芯片组由基带和射频两部分组成。
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