| 释义 |
spread spectrum.
基本例句
un.扩展频谱🌏频展；扩频；扩频技术
A direct sequence spread spectrum DSSS receiver has strict requirement on local carrier's synchronization, and always needs complex circuits.
直接序列扩频接收机对本地载波的同步要求非常严格，以往所需电路复杂。 cnki
In view of the acquisition in spread spectrum wireless data communication system, a new way using PN matched filter is proposed in this paper, which increase the efficiency of communication greatly.
本文针对扩频无线数据通信系统的捕获问题，提出了一种采用 PN匹配滤波器实现的方法，大大提高了通信效率。 cnki
It will be shown that because of CDMA's unique spread spectrum waveform, power control, and soft handoff capabilities, even the most difficult system engineering problems can be overcome.
同时，本文还说明，由于 CDMA系统具有独特的扩频波形、功率控制和软切换等功能，因此，即使是最困难的工程技术问题也可以迎刃而解。 cnki
Spread spectrum has two distinct flavors: direct sequence and frequency hopping.
该技术有两个明显的变型：直接顺序与跳频。 iciba
Aiming at the Direct Sequence Spread Spectrum signal, this paper presents the approach of multi- assumption and match- filtering with the least square theory to estimate the frequency.
针对直接序列扩频信号，本论文提出了利用多假设并行匹配滤波法实现解扩，利用最小二乘法进行频率估计的方法。 cnki
Design and selection of spread spectrum code sequence is one of the key technologies of CDMA digital honeycomb mobile communication.
扩频序列设计和选择是码分多址 CDMA数字蜂窝移动通信的关键技术之一。 cnki
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。 cnki
FFT algorithm has been developed to acquire high dynamic spread spectrum signals in spread spectrum RSP developed by BRIT.
讨论了采用 FFT算法实现高动态扩频信号快捕的一种方法。 iciba
In spread spectrum communication system, the capability of pseudo- noise PN code can impact the performance of the whole system directly.
在扩频通信系统中，伪随机码 PN性能的优劣将直接关系到系统性能的好坏。 cnki
Merits of the Linear FM are that it is not necessary to have an equalizer or the spread spectrum code modulation.
线性调频调制的优点是：不须在接收端添加均衡滤波器，也不须进行扩频编码。 cnki
Multicarrier CDMA is the combination of spread spectrum technique and multicarrier technique, being focused on in communication field in these years.
多载波 CDMA技术是是近年来通信界研究的热点问题，他将扩频多址技术与多载波技术有机的集合起来。 cnki
Presented in this paper is a direct sequence spread spectrum radio based on virtual technique in which direct sequence spread spectrum, software radio and virtual technique are combined.
文中提出的虚拟式直接序列扩频通信电台将直接序列扩频通信、软件无线电和虚拟技术相结合。 cnki
The passage and data error rates in a burst, spread spectrum system are dependent on the link characteristics, probability of acquisition, false alarm rate and the number of demodulator used.
在突发工作方式的扩频系统中，传输和数据误差率取决予线路特性、捕获概率、虚警概率和使用的解调器数量。 cnki
With the wide application of Spread Spectrum Communication and CDMA in military and public domain, people's requirements on selecting Pseudo Noise Code are more and more stringent.
随着扩频通信和 CDMA在军用和民用领域的广泛应用，人们对伪随机码的选择提出了越来越苛刻的要求。 cnki
Spread Spectrum technique is widely used in digital cell-phone mobile communication system, satellite mobile communication, inside wireless communication and future personal communication.
扩频技术在数字蜂窝移动通信系统、卫星移动通信、室内无线通信和未来的个人通信中被广泛采用。 cnki
Spread spectrum technology competes in the unregulated portion of the radio electromagnetic spectrum.
扩频技术是在无线电电磁频谱中无条例管制的部分中竞争。 iciba |