It was proposed that the project of satellite overlay communication with direct sequence spectrum spreading (DSSS).
提出一种利用DS扩频技术实现卫星重叠通信的方案。
Radio has been cramming ever more information into the transmission, using techniques such as spreading it across the spectrum, dividing it up into portions and using "smart" antennae.
通过使用诸如跨频段传播，分割成块和“智能”天线技术使传输中的无线电波填充更多的信息。
The second part is the third chapter, which explains the PN code adopted by spreading spectrum in this system and the power testing algorithm.
第二部分为第三章主要从软件算法实现方面进行阐述，该部分包括系统扩频码选取及不同长度扩频码性能比较分析和功率检测算法。
This paper analyses convolution encoding method and spreading spectrum method and discusses emphatically its implementation and demonstrates the program flow chart.
论文分析了卷积编码方法和扩展频谱方法，并详细论述了编码和扩频的软件实现方法，给出了程序的流程图和相关程序。
You then turn on the modulation, thereby spreading the spectrum.
然后，开始调制，传播频谱。
Spreading sequences design is one of the key task in the direct-sequence spread spectrum communication systems.
扩频序列设计是直接序列扩频通信系统的关键课题之一。
Relying on energy spectrum analysis and metallographic examination, we have studied and analyzed the spreading the quality course and forming mechanism of the above every layer.
并借助能谱分析和金相观察对上述三层的传质过程和形成机理进行了分析和探讨。
A new combined Surface Acoustic Wave (SAW) convolver, or a serial searching code acquisition scheme for direct sequence spreading spectrum (DSSS) communication system is presented.
提出了一种用于直接扩频通信系统（DSSS）快速捕获，新型组合声表子波（SAW）卷积器序列搜索码捕获方案。
It has been proved in reality that a PLCC based on spreading spectrum modulation and demodulation can achieve a higher communicating rate and a lower bit error rate.
实践证明，以扩频调制、解调为基础的电力线载波通信方案可获得较高的通信速率和较低的误码率。
Equally, spreading spectrum technology can improve the performance of watermark technology greatly, but it will increase the capacity of channel and the calculation of the algorithm as cost.
应用扩频原理，能大大改善水印嵌入的不可感知性。但由于采用扩频调制后，一个水印信息要用一个周期的伪随机序列调制，因此会增加嵌入的水印量。
It is important to select spreading spectrum code for OCDMA communication.
对于OCD MA通信，扩频码的选择非常重要。
Spreading spectrum signals have been widely used in military and civilian fields, owning to the low power spectral density, strong anti-interference ability, good confidentiality and so on.
由于扩频信号具有功率谱密度小、抗干扰能力强、保密性好等优点，已被广泛应用于军事和非军事领域。
The main reason why the SS communication can pick up weak signal in the strong noise environment, is the function of spreading and despreading spectrum.
扩频通信之所以能实现强噪声环境中弱信号的提取，主要是扩频和解扩的作用。
Direct sequence spread spectrum technique is the most widely used one and the kernel of the spreading spectrum techniques for people to study.
直接序列扩频技术是应用最广的一种扩频技术，研究它便于掌握扩频技术的精髓。
In direct sequence spread spectrum communication system when the spreading gain is limited, the performance of the communication system will be impacted by the strong power of narrowband interference.
在直接序列扩频通信系统的扩频增益受限时，强功率的窄带干扰对系统性能影响较大。
In direct sequence spread spectrum communication system when the spreading gain is limited, the performance of the communication system will be impacted by the strong power of narrowband interference.
在直接序列扩频通信系统的扩频增益受限时，强功率的窄带干扰对系统性能影响较大。
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