宽带通信及其扩频通信技术等的运用。
然后从这种随机数据流中获得扩频序列。
Itemploys random spreading sequences that are extracted from the information data.
扩频方式具有很强的对抗窄带噪声的能力。
The DSSS system has inherent capability to counteract narrow-band interference.
主要有两种选择，直接序列扩频和跳频扩频。
There are two main alternatives, Direct Sequence Spread Spectrum and Frequency Hopping Spread Spectrum.
论文对匹配滤波器和正交可变扩频因子作了研究。
In this dissertation, matched filter and orthogonal variable spreading factor are investigated.
然而，扩频系统自身的干扰抑制能力总是有限的。
However, its ability of interference suppression is always limited.
扩频通信是矿井等强噪声环境中最有效的通信方式。
Spread spectrum communication is the most efficient mode in the strong noise environment such as the coal mine.
在此基础上，改进了基于扩频序列的信道估计方法。
Then an improved proposal for the channel estimation using spread sequence was imposed.
直接序列扩频技术在军事通信中得到了广泛的应用。
The technology of directs sequence spread spectrum (DSSS) have been applied in the military communication widely.
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 technique has been widely used in the burgeoning individual wireless communication.
对基于软件无线电的近距离扩频测距算法进行了研究。
The near field spread spectrum ranging algorithm based on software radio is investigated.
并对基于序列偶的扩频通信系统设计方案进行了讨论。
The design scheme of spread-spectrum system based on sequence pairs is discussed.
论文首先介绍了电力线载波通信和扩频技术的基本原理。
First, the basic principles of power line communication and spread spectrum are introduced.
扩频序列设计是直接序列扩频通信系统的关键课题之一。
Spreading sequences design is one of the key task in the direct-sequence spread spectrum communication systems.
其中直接序列扩频通信是目前使用最典型的扩频工作方式。
Direct sequence spread spectrum communications is one of the most typical spread spectrum modes.
本发明描述了接收机与扩频信号进行时间同步的方法和系统。
Methods and systems for time synchronizing a receiver to a spread spectrum signal are described.
用扩频电力线载波通信技术设计了铁路站场智能化照明系统。
An intelligent lighting system for railway goods yard based on spread spectrum power line carrier communication technique is proposed.
文中阐述了扩频对讲机的主要的技术理论和相关的硬件构成。
This paper explains the main technical theory of spread sequence interphones and related hardware.
扩频系统中性能最好的是直接序列扩频的先解扩后解调方式。
Direct sequence spread spectrum (DSSS) and despreading first structure is most advantageous of all kinds of spread spectrum techniques.
准确、快速的扩频码同步是编码LPI雷达系统实用的前提。
Quick and accurate acquest of signal is critical for the utility of an LPI radar.
逆扩频装置，时序检测装置，信道估计装置和频率误差测量方法。
Reverse-spread spectrum device, time sequence inspection device, channel evaluation device and method for measuring frequency faults.
由于该系统降低了每个子载波上的数据速率，扩频序列更容易同步。
Furthermore, this system lowers the data rate of each carrier branch, so it is easier to make PN sequence synchronized.
本文描述了一种通过扩频通讯的方式实现生理数据无线传输的方法。
This article has described one method of transmitting physiological data through wireless spread spectrum communication.
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。
It mainly contains the digital modulate system, the SS communication theory and the direct sequence spread spectrum (DSSS) system.
本文给出了直接序列扩频信号正交分路周期相关检测算法的性能分析。
The performance analysis of quadrature correlation detection algorithm for DS-SS signal is presented.
除此之外还有一种扩频通信附件可以跨越市区或乡村进行通讯，售价6000美元。
Also, a spread-spectrum attachment was to be made available for beaming data across town or across the country. The target price was $6000.
强人为干扰环境下的非周期扩频码的扩频通信在军事上具有重要的意义。
The spread spectrum communication with an aperiodic PN code and under strong man-made jammers has an important significance in military communications.
众多的扩频通信抗干扰技术往往把有用扩频信号近似看作平稳随机过程。
In a lot of antijamming techniques for direct spread spectrum system (DSSS), the DSSS signal is approximately considered as a stationary process.
直扩通信对抗包括直扩信号的盲检测、参数估计和扩频码序列恢复等内容。
The blind detection, parameters estimation and recovery of spreading sequences are the main contents of DS communication counter.
干扰抑制是提高直接序列（DS）扩频通信系统抗干扰能力的重要手段。
The anti jamming capability of DS/SS communications systems can be enhanced significantly by interference suppression techniques.
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