通讯系统

It is essentially the study of Shannon theorem which states that "it is possible to transmit information through a noisy channel at any rate less than channel capacity with an arbitrarily small probability of error" This course is intented to introduces the basic information theory.

资讯理论尝试建立一个通讯系统的数学模型，基本上是在探讨Shannon的定理：「在有杂讯的通道中，只要传送率低於通道容量，则存在一种编码方法，使得解码错误的机率趋近於零。

The baud rate of a data communications system is the number of symbols per second transferred.

通讯系统的波特率是每秒传输信息标记数。

Animal communication systems (bird chips, bee dances, dog barks, and so on), are all excluded.

动物的通讯系统（禽流芯片，蜜蜂的舞蹈，犬吠，等等），都被排除在外。

Many venders invest in lots of money and people on WCDMA cellular systems. What venders consider is the performance of the system.

许多企业投入大量资金以及人力在研发WCDMA蜂巢式系统，祈望能使得通讯系统更有效率。

Police Equipment: police chain of command / equipment, patrol / anti-riot police / special police equipment, command vehicle / Car / car communications / anti-riot vehicle / light truck / car to clear up obstacles / fire engines and police helicopters / patrol boat / Xiaofang Ting / police wired / wireless communication system / emergency ambulance and police emergency / life-detection equipment / teaching police training equipment.

警用装备类：警用指挥系统/设备，巡警/防暴警/特警装备，指挥车/巡逻车/通信车/防暴车/照明车/清障车/消防车，警用直升机/巡逻艇/消防艇/警用有线/无线通讯系统/警用紧急救护及抢险/生命探测设备/警用教学训练设备等。

Patrolmen are equipped with two-way radios and GPS,the communication between them and command center is quite smooth.

巡逻警察都装备了无线电双向通讯系统和全球定位系统，他们和指挥中心的联系很通畅。

Able to maintain and edit web page; familiar with network knowledge and line layout; understand communications system; able to do simple maintenance of telephone switch machine.

能进行网站网页的维护编辑；熟悉网络知识以及布线系统；对通讯系统有一定了解，对电话交换机可以进行简单的维护。

Able to maintain and edit web page; familiar with network knowledge and line layout; understand communica-tions system; able to do simple maintenance of telephone switch machine.

能进行网站网页的维护编辑；熟悉网络知识以及布线系统；对通讯系统有一定了解，对电话交换机可以进行简单的维护。

It is designed to be a flexible multi protocol system to provide users with a single application to access their instant messaging systems.

它的设计是一个灵活的多协议系统，提供一个单一的应用程序用户访问他们的即时通讯系统。

It is designed to be a flexible multi protocol system to provide users with a single application to access their instant messaging systems.

它的设计是一个灵活的多协议系统，为用户提供一个单一的应用程序来访问他们的即时通讯系统。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。