图书信息
作者：周炯槃，庞沁华等 编着
出 版 社：北京邮电大学出版社
出版时间： 2005-11-1
字数： 799000
页数： 528
定价：46.00
I S B N ： 9787563511747
内容简介
本书系统、深入地介绍了通信系统及通信网的基本原理及基本分析方法，是通信及信息专业的专业基础教材。全书共十一章，内容包括通信系统交通网的基本概念、确定信号及随机过程、模拟通信系统、数字基带传输、数字频带传输、信源和信源编码、信道和信道容量、信道差错控制编码、正交编码与伪随机序列及其应用、通信网的基本原理。本书概念清楚，取材新颖，书中除列举了大量例题，还附有习题及部分习题答案。本书可作为高等学校通信工程、信息工程、电子工程和其他相近专业本科生的教材，也可供通信工程技术人员和科研人员作为参考书。
目录
第一章 绪论
本书系统、深入地介绍了通信系统及通信网的基本原理与基本分析方法,是通信及信息专业的专业基础课教材,是在相关高等学校教师长期教学实践的基础上编写的。
第二章 确定信号分析
信号分析是信号处理的基础,分析的目标通常有信号的概率密度、相关性、频谱等,分析目的就是要提取或利用信号的特征.信号是信息的载体,信号特征本质上往往体现出信息源的特征.这种特征可以从各个方面(域)出来,因此分析也可以从各个方面(域)去进行.不同域的特征之间通常是有对应关系的,但某种信号往往在某个域能更清晰地体现自己的特征.比如在很多情况下,信号的频域表示比它的时域表示更简单明了,容易解释和表征,便于特征分析、参数识别、数据压缩、信号合成等.
第三章 随机过程
随机过程(Stochastic Process)是一连串随机事件动态关系的定量描述。随机过程论与其他数学分支如位势论、微分方程、力学及复变函数论等有密切的联系，是在自然科学、工程科学及社会科学各领域研究随机现象的重要工具。随机过程论目前已得到广泛的应用，在诸如天气预报、统计物理、天体物理、运筹决策、经济数学、安全科学、人口理论、可靠性及计算机科学等很多领域都要经常用到随机过程的理论来建立数学模型。
第四章 模拟通信系统
第五章 数字信号的基带传输
第六章 数字信号的频带传输
第七章 信源和信源编码
第八章 信道
第九章 信道编码
第十章 正交码为伪随机码
第十一章 通信网的基本知识
附录
参考文献
编辑推荐
融合了模拟通信和数字通信、有线通信和无线通信（包括固定通信和移动通信）的基本通信原理，构建了全书较完整的章节体系结构。
根据通信对消息的主要处理过程来划分章节，理论体系清晰，并与通信系统的功能模块划分基本一致。
理论密切联系通信设备的实际，较好地反映了当前通信系统设备的技术状况。
配有多媒体课件。
文摘
插图：
The above equation shows that if two arbitrary random variables in the Gaussian process are uncorrelated to each other, and then the n-dimensional joint probability density is equal to the product of each one dimensional probability density. The random variables which satisfy this condition are regarded statistically independent ( to one another). Let us reiterate if the cross-correlation function of the two random variables equals O, then they are regarded as bing uncorrelated to each other; if the two dimensional joint probability density of the two random variables is equal to the product of the one dimensional probability densities, then it is regarded independent of each other. Two uncorrelated random variables are not always independent of each other; and the two independent random variables are certainly uncorrelated.
We have proved in the above paragraph that random variables of the Gaussian process are uncorrelated and independent of one another. We shall only further discuss the characteristics of one dimensional Gaussian process as follows.
作者简介
Fan Changxin was graduated from Peking University in 1952.He is with Xidian University，xi l an，China as a Professor and doctoral supervisor，and is elected Fellow of CIE. Fellow of CIC. and Fellow of IEEE. He published more than 100 papers and more than 10 books in the area of communication engineering and technology. Among them，the textbook untitled“Principies of Communication”（1980,in Chinese）was awarded the top grade prize for excellent textbooks from the MEI of China and the prize for excellent textbooks from the State Education Commission of China.
Sun Tianyi was graduated from Beijing Catholic（Fu Jen）University, in 1952 and was bestowed Honorary Doctoral Degree by Bowling Green State University，Ohio，USA，in 1994.He is a Professor Emeritus and former President of Xian International Studies University, Honorary President of Shaanxi Translation Association，and the former Vice President of Translators Association of China. He has written，translated and reviewed：a number of books, dictionaries，and English textbooks.
序言
In recent years, communication theory and technology has witnessed rapid development. In China, the application of telecommunication service has penetrated into almost every household and every person. The huge modern communication networks have been one of the important infrastructures in China. Correspondingly, the amount of telecommunication enterprises and employees there has also been increasing remarkably. Under this situation, the education of the new specialized personnel in the telecommunication field and the reeducation of the personnel in service have become important tasks. In addition, bilingual teaching is a new requirement in Chinese institutions of higher learning, and its importance has been recognized by more and more people. However, there is lack of appropriate textbooks in English on communication theory for Chinese students. This textbook is intended to accommodate the demand.
The current communication networks in China have almost all been digitized. Signals transmitted in China' s public communication networks are mainly digital ones; only the signals transmitted in
the user's loop and those signals for special applications are still analog. Hence, the discussion of
analog signal transmission techniques is limited to a minimum, and the greater part of this book is devoted to discussions of digital communication including transforming, encoding and transmission of digital signals, as well as the digitization of analog signals.
In the discussion on digital communication technology, some new communication technologies have been emphasized, for example, trellis code modulation (TCM), orthogonal frequency division modulation (OFDM) ,multiple access, spread spectrum, TURBO code, and, so on. Attention has been directed to the explanations that are associated with the application examples of the currently rapidly developed networks, such as satellite communication and computer communication networks, and so on.
