通信系统

Different to the conventional information communication, Information intercepting technique have to be faced with the following basic difficult problems: the blind recognition of the parameters of the communication; the blind recognition of the parameters of the signal; how to efficiently process the fading signal which power is under the receiving threshold of the conventional communication; how to demultiplex the mixed information stream with serious errors; and how to determine the value of the information etc.

有别于常规的通信技术，信息截获技术面临如下重大的基本难题：通信体制参数的盲识别；系统信号参数的盲识别；如何实现对强度低于常规通信接收门限的衰落信号的高增益；如何实现对混合信息流的高容错同步分路；以及如何实现对信息价值的判定。

This article mainly introduces the construction of distributed numerical control system, communication protocols, debug process, and function of DNC communication and managing software .

文章介绍了分布式计算机数控系统通信网络的结构、通信协议、调试步骤以及通信与管理软件的主要功能。

So monitoring the hydric parameters can realize the effective and essential evaluation for the running state of the dynamotor.

并且提出了一种利用组态软件MCGS、无线通信手机短消息业务、工控总线Modbus通信协议和RS-485总线实现发电机系统氢气参数的现场实时监测系统的设计方案。

In order to control and manage the dynamic system and other vehicle subsystems of an electromotion automobile effectively , this article introduced the exploitation process of a center-controller which was based on CAN-Bus, and discussed its structure and the design and realization of its hardware and software as well as the establishment of CAN Bus communication protocols.

为了对电动汽车的动力控制系统以及其他车辆控制系统进行集中管理控制，介绍了以CAN总线通信为基础的主控制器的开发过程，阐述了主控制器的功能结构和软硬件的设计与实现以及CAN总线通信协议的制定。

Combine in single-phase kilowatt-hour meter checking meter concrete application of the system , do a simple example to infrared practical application ofdata communication. Because infrared communication interface, it hold person who check meter can finish it easy. The efficiency of improving the work of checking meter greatly , and check meter to exactitudly and stop to some mistakes check.

结合在电度表抄表系统中的具体应用，对红外数据通信的实际应用做了一个简单的例子，在电度表抄表系统中，由于配备了红外通信接口，利用手持抄表器可以方便地完成对电度表的抄录和校准等工作，大大提高了抄表工作的效率，而且抄表精度高并杜绝了估抄和误抄的问题。

In this way, the flow control states of the local terminal and the communication remote terminal are assured to be consistent, and the packet loss situation is avoided happening due to the disorder of the flow control state in the communication process between the local terminal and the communication remote terminal, thereby improving the work quality of the switch to a great degree and the stability of the system.

这样，便保证了本端与通信对端的流控状态的一致性，使本端和通信对端在通信过程中不会因流控状态的错乱而发生丢包现象，这在很大程度上提高了交换机的工作质量，也提高了系统的稳定性。

The SOA-based publish/subscribe system model supports many-to-many communication and time,space,and control flow of subscribers and publishers and provides the loose coupled form of interaction required in the lage-scale system.

基于SOA 的发布/订阅系统模型是目前广泛使用的通信模型，支持发布者和订阅者之间在时间、空间和控制流方面的非耦合以及多对多通信模式，提供了分布式系统所要求的松散耦合。

Considering the characteristics of distribution transformers, a system based on GPRS networks is put forward by taking a practical managing system of distribution transformer as an example. It utilizes the direct connection between GPRS network and Internet, setting a server in Internet, which takes charge of the transfer of the communication of the master station and the terminal units.

针对配变监测系统对数据传输可靠性和实时性的要求，本文通过介绍一种基于移动GPRS无线通信的配电变压器监测系统，提出基于GPRS网络的配变自动化通信解决方案。

ABSTRACT In the first chapter, the basic theory and developing phases of spread spectrum communication are introduced. Smart antennas technology is introduced based on comparison of different multiple address methods. The main technical character of smart antennas and the progress in the application are also summarized.

本论文讨论了移动通信CDMA系统中智能天线技术的应用，论文第一章介绍了扩频通信的理论基础及发展阶段，在比较不同多址通信方式的同时引入智能天线技术，归纳了智能天线的主要技术特点，总结了目前智能天线技术在理论和应用中的进展，最后介绍了本文所做的主要工作。

The goal of a CSCW system is to enable users to cooperate conveniently no mater when and where While,currently,most CSCW users rely on existing network infrastructures Self organized Network is a multi hop temporary autonomous system of mobile nodes equipped with wireless transmitters and receivers without the aid of any current network infrastructure In such an environment,it may be necessary for one mobile node,in order to communicate another node,to need a chain of intermediate nodes to forward pac...

CSCW 系统目标是允许用户在任何地点，在任何时间可以方便地进行群体间的协同工作。目前大多数的CSCW 用户都需要依靠现有的网络基础设施。自组网是一组带有无线收发装置的移动节点组成的一个多跳的临时性的自治系统。在这种环境中，由于节点无线通信覆盖范围的有限性，需要借助其他中间节点进行分组转发到达信宿。它可以在没有可用的网络基础设施的情况下提供一种通信支撑环境，从而拓宽了CSCW 的应用环境。本文描述了自组网的概念和特点，并提出了自组网的体系结构。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。