圖書信息
作者：周炯槃，龐沁華等 編着
出 版 社：北京郵電大學出版社
出版時間： 2005-11-1
字數： 799000
頁數： 528
定價：46.00
I S B N ： 9787563511747
内容簡介
本書系統、深入地介紹了通信系統及通信網的基本原理及基本分析方法，是通信及信息專業的專業基礎教材。全書共十一章，内容包括通信系統交通網的基本概念、确定信号及随機過程、模拟通信系統、數字基帶傳輸、數字頻帶傳輸、信源和信源編碼、信道和信道容量、信道差錯控制編碼、正交編碼與僞随機序列及其應用、通信網的基本原理。本書概念清楚，取材新穎，書中除列舉了大量例題，還附有習題及部分習題答案。本書可作為高等學校通信工程、信息工程、電子工程和其他相近專業本科生的教材，也可供通信工程技術人員和科研人員作為參考書。
目錄
第一章 緒論
本書系統、深入地介紹了通信系統及通信網的基本原理與基本分析方法,是通信及信息專業的專業基礎課教材,是在相關高等學校教師長期教學實踐的基礎上編寫的。
第二章 确定信号分析
信号分析是信号處理的基礎,分析的目标通常有信号的概率密度、相關性、頻譜等,分析目的就是要提取或利用信号的特征.信号是信息的載體,信号特征本質上往往體現出信息源的特征.這種特征可以從各個方面(域)出來,因此分析也可以從各個方面(域)去進行.不同域的特征之間通常是有對應關系的,但某種信号往往在某個域能更清晰地體現自己的特征.比如在很多情況下,信号的頻域表示比它的時域表示更簡單明了,容易解釋和表征,便于特征分析、參數識别、數據壓縮、信号合成等.
第三章 随機過程
随機過程(Stochastic Process)是一連串随機事件動态關系的定量描述。随機過程論與其他數學分支如位勢論、微分方程、力學及複變函數論等有密切的聯系，是在自然科學、工程科學及社會科學各領域研究随機現象的重要工具。随機過程論目前已得到廣泛的應用，在諸如天氣預報、統計物理、天體物理、運籌決策、經濟數學、安全科學、人口理論、可靠性及計算機科學等很多領域都要經常用到随機過程的理論來建立數學模型。
第四章 模拟通信系統
第五章 數字信号的基帶傳輸
第六章 數字信号的頻帶傳輸
第七章 信源和信源編碼
第八章 信道
第九章 信道編碼
第十章 正交碼為僞随機碼
第十一章 通信網的基本知識
附錄
參考文獻
編輯推薦
融合了模拟通信和數字通信、有線通信和無線通信（包括固定通信和移動通信）的基本通信原理，構建了全書較完整的章節體系結構。
根據通信對消息的主要處理過程來劃分章節，理論體系清晰，并與通信系統的功能模塊劃分基本一緻。
理論密切聯系通信設備的實際，較好地反映了當前通信系統設備的技術狀況。
配有多媒體課件。
文摘
插圖：
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.
作者簡介
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.
