模拟通信

新型Mobius模拟通信系统的比较研究

The Study of Chen - Mobius Analog Communication Systems and Its Comparations with Traditional Systems

在GMSK调制解调的基础上，给出了一种适用于模拟通信设备数字化改造的GMSK调制解调模块的设计。

Then , on the basis of the GMSK modulation / demodulation , presents GMSK modulation / demodulation module for digital transformation of analog communication equipment .

W波段模拟通信研究

Investigation of Analogue Communication at W - band

在SYSTEMVIEW中仿真实现了上述信号的相干解调和自适应解调两种方法，并模拟通信的实际环境分析对比解调性能，验证前述的理论分析。

The coherent demodulation and adaptive demodulation are both realized in these forementioned systems in System View , and the corresponding theory is proved by analyzing and comparing in simulation .

PWM在几种模拟通信信号数字调制解调中的应用

The application of PWM in digital modulation and demodulation for analog communication signals in several modulation modes

移动通信系统也由第一代的模拟通信系统发展到现在的LTE移动通信系统。

Mobile communication system also has a first generation of analog communications system development to now LTE mobile communication system .

OPNET是一用来模拟通信系统和预测网络性能的强大仿真工具。

OPNET is a powerful network simulator , which can be used to simulate communication systems and predict network performance .

从第一代的模拟通信到第二代的数字通信，直至第三代的宽带通信和目前人们提出的所谓4G宽带多媒体系统，都是在向着个人通信的目标发展。

From first analog generation to second digital generation , and up to wideband 3G and so-called 4G at present , mobile communication aims to personal communication .

最后在硬件平台上搭建了一个稳定可靠的模拟通信环境，并针对ACL功能和QoS功能设计了相应的测试方法和通过准则，为后续测试做了充分的准备。

At last , we established a stable and reliable simulation environment based on hardware platform , designed the accordingly test methods and criteria against the ACL and QoS function , making completely prepartions for the following test .

文章介绍了一种基于windowsSockets和Lock-step的协同模拟通信同步算法，最后介绍了几种降低通信开销，提高协同模拟效率的方法。

This paper introduces a synchronization and communication algorithm of ISS and Hardware Simulator which is implemented with Windows Sockets and Lock-step . In the end , to reduce synchronization and communication overhead , some methods are introduced .

无线通信与个人通信在短短几十年经历了从模拟通信到数字通信、从FDMA到CDMA的巨大发展，目前又出现了以OFDM为核心的第四代移动通信技术。

Nowadays , the 4th generation mobile communications , which base on the OFDM technology , has emerged , just shortly after several decades ' development of wireless and personal communication , which has burgeoned from analog to digital and from FDMA to CDMA .

应用Mobius变换对各种常用数字信号的傅立叶级数进行逆变换计算，所得到的结果应用于模拟通信系统，就是一种称之为新型Chen-Mobius的模拟通信系统。

The inverse transform operation of Mobius on Fourier series of some often-used digital signals were used . The results were applied in analog communication system , the newly named system of Chen-Mobius analog communication system , is analyzed .

GB/T4573-1984模拟通信网中相对功率电平的测试方法

Measuring method for the relative power level over the analogue communication network

传输高稳定原子钟信号的光纤模拟通信系统

Optical fiber analog communication system for transmitting high steady atomic clock signals

提出了在架线电机车载波通信系统中，用数字通信取代模拟通信方式。

A digital communication system is introduced to replace analog system used in underground locomotive carrier communication system .

变电站二次回路通信从金属电缆模拟通信方式逐步转变为光电数字化通信方式。

The communication of substation secondary circuit is being transformed from metal cable analog mode to optic-electric digital mode .

就目前而言，国内常规对讲机领域仍基本停留在模拟通信技术阶段。

Currently , the field of domestic conventional Two-way radio remains basically in the stage of analog communication technology .

通过计算机模拟通信信号，本文对提出的五个参数的分布情况进行了仿真分析，并将仿真参数作为训练样本提供给支持向量机分类器。

The five parameters were provided as training samples to the SVM classifier after the simulation of their distribution .

GB/T4574-1984模拟通信网中实际电路噪声与模拟系统负荷的电路噪声测试方法

Measuring methods for actual circuit noise and the circuit noise in simulating system loading over the analogue communication network

它们还可以模拟通信负载，从而发现在负载平衡、错误处理，等等过程中会发生什么。

They could also simulate traffic loads to discover what will happen during load balancing , error handling , and so forth .

最终实现了在8kbit/s速率上能够合成高质量语音的实验室模拟通信系统。

A simulation system for speech communication in laboratory that can synthesize high-quality speech at 8kbit / s rate is realized finally .

移动通信从20世纪80年代大规模投入商用以来，已经经历了从模拟通信向数字通信的转变。

Mobile communication has already experienced big transformation from the analog communications to the digital communication since 1980s it is large-scale invested in commercial .

软件无线电技术被誉为继模拟通信转变为数字通信后，无线通信系统领域又一次革命。

Software defined radio ( SDR ) is praised as another revolution in the field of wireless communication , since analog communication has developed into digital communication .

模式噪声是在多模光纤中产生的噪声，表现为对信号的寄生调幅，模式噪声的出现会提高数字通信系统的误码率，降低模拟通信系统的信噪比。

Modal noise , which is generated from multimode fiber , exhibits parasitic amplitude modulation of signals , and degrades the performance of digital and analog communication systems .

软件无线电是继模拟通信技术、数字通信技术之后的第三代通信技术，是21世纪军用和商用无线电发展的趋势。

Software radio is the third-generation wireless communication technology afterwards analog communication and digital communication technology . It is a new trend in military and commercial radio development in 21st century .

提出了一种较为真实的仿真方法，用两台带声卡的PC机分别模拟通信系统中的发射机和接收机，以模仿连续信号在信道中的传输。

To simulate the transmission of continuous signal in channel , it poses a better simulation method to simulate the transmitter and receiver in communication system by two PC computers with sound blaster .

模拟通信系统到数字通信系统的转变，是移动通信技术的一次重大革命，在频谱效率、系统容量、保密性以及通话质量方面得到了极大的改善。

It is a great revolution in mobile communication technology for the change from analog communication system to the digital communication system . The revolutionary improvement includes spectrum efficiency , the system capacity , confidentiality and the call quality .

该接入设备既可作为系统的用户终端，也可作为转接设备，它配置于外部模拟通信设备与以太网的接口处，完成网络接口、离散控制信号转换、语音数字化以及多路语音合成的功能。

It acts as a terminal of this system , or an interface linking the analog communication equipment and the Ethernet , to function of network interface , discrete signal process , voice A / D , D / A and mix .

软件无线电技术是近几年来提出的一种实现无线电通信的新的体系结构，是无线通信领域继从模拟通信到数字通信、从固定通信到移动通信后的第三次革命。

Software radio technology was the realization of a new radio communications system structure in recent years . It is the third revolution in the field of wireless communications following from analog communications to digital communications , from fixed communications to the mobile communications .

基于高级验证方法学构造了列车通信网络控制器的模块级和系统级功能验证模型，设计了网络拓扑级验证模型，弥补了传统验证方法难以模拟通信过程的不足。

Based on the advanced verification methodology , VMM verification methodology , module level and system-level functional verification frameworks are constructed , and network topology level functional verification framework is proposed aiming to covering the shortage of inefficiency of traditional methods about simulation of communications in the network .