Wireless Communications
Wireless Communications
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DOI：
10.1007/978-1-4419-9152-2
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发表时间：
2003-11
期刊：
影响因子：
--
通讯作者：
A. Sheikh
中科院分区：
文献类型：
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作者：
A. Sheikh
无线通信系统自其以蜂窝通信的形式出现以来，已经在整个西方世界迅速传播，并且这一趋势也在发展中国家流行。这些系统使我们的生活方式发生了革命性的变化。蜂窝通信作为通信手段和商业企业的一个新领域已变得重要。手持电话正在迅速取代固定电话，在不到20年的时间里，用户数量已达到近7.5亿。在短短的二十年时间里，蜂窝通信从第一代发展到第三代系统，第三代系统于2001年10月1日在日本开始运营。第一代无线技术曾被认为已经过时，但现在在亚洲、非洲和拉丁美洲的几个国家正用于固定有线电话。正如一些评论家在1983年所说的那样，蜂窝系统是自计算机普及以来电信领域发生的最好的事情。这本书的写作是为了向读者提供无线通信的基本概念。它是为无线通信的研究生课程设计的，但它可以很容易地在高级水平上通过跳过涉及困难的数学运算的材料来采用。文本没有通过严格的材料对电磁波和传播的数学处理，而更多地强调这方面的实际问题。
Wireless communication systems, since their inception in the form of cellular communications, have spread rapidly throughout the western world and the trend is catching on in the developing countries as well. These sys tems have caused revolutionary changes in the way we live. Cellular Commu nications have become important both as means of communication and as a new domain ofcommercial enterprise. Hand held telephones are now rapidly replacing the fixed telephone and in less than twenty years, the number of subscribers has reached nearly three quarters of a billion. In a short span of twenty years, the cellular communications progressed from the first genera tion to the third generation systems, which started operations in Japan on October 1, 2001. The first generation wireless technology, which was thought to be obsolete is now being used for fixed wired telephony in several coun tries of Asia, Africa and Latin America. As some commentator said in 1983, the cellular system is the best thing that has happened in telecommunications since the introduction ofcomputers to the masses. This book is written to provide readers with the fundamental concepts ofwireless communications. It is intended for a graduate course on wireless communications but it could be easily adopted at the senior level by skipping material involving difficult mathematical manipulations. The text does not go through the rigorous material on mathematical treatment of electromagnetic waves and propagation, rather it emphasizes more on the practical aspects of this.