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【文件名】:06823@52RD_wireless communications.part1.rar
【格 式】:rar
【大 小】:900K
【简 介】:Wireless communications is, by any measure, the fastest growing segment of the communications industry. As such, it has captured the attention of the media and the imagination of the public. Cellular systems have experienced exponential growth over the last decade and there are currently around two billion users worldwide. Indeed,cellular phones have become a critical business tool and part of everyday life in most developed countries, and are rapidly supplanting antiquated wireline systems in many developing countries. In addition, wireless local area networks currently supplement or replace wired networks in many homes, businesses, and campuses. Many new
applications, including wireless sensor networks, automated highways and factories, smart homes and appliances,and remote telemedicine, are emerging from research ideas to concrete systems. The explosive growth of wireless systems coupled with the proliferation of laptop and palmtop computers indicate a bright future for wireless networks, both as stand-alone systems and as part of the larger networking infrastructure. However, many technical challenges remain in designing robust wireless networks that deliver the performance necessary to support emerging applications. In this introductory chapter we will briefly review the history of wireless networks, from the smoke signals of the pre-industrial age to the cellular, satellite, and other wireless networks of today. We then discuss the wireless vision in more detail, including the technical challenges that must be overcome to make
this vision a reality. We describe current wireless systems along with emerging systems and standards. The gap between current and emerging systems and the vision for future wireless applications indicates that much work remains to be done to make this vision a reality.
【目 录】:
1 Overview ofWireless Communications
2 Path Loss and Shadowing
3 Statistical Multipath Channel Models
4 Capacity ofWireless Channels
5 Digital Modulation and Detection
6 Performance of Digital Modulation overWireless Channels
7 Diversity
8 Coding forWireless Channels
9 Adaptive Modulation and Coding
10 Multiple Antennas and Space-Time Communications
11 Equalization
12 Multicarrier Modulation
13 Spread Spectrum
14 Multiuser Systems
15 Cellular Systems and Infrastructure-BasedWireless Networks
16 Ad HocWireless Networks
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发表于 2006-8-23 15:45:00
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