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【文件名】:06912@52RD_CDMA.and.cdma2000.for.3G.Mobile.Networks.part1.rar
【格 式】:rar
【大 小】:900K
【简 介】:probability. The RF power output of a transmitter was 50 to 250 W,
while with the antenna gain, the radiated power at the antenna was
usually in the range of 500 W. A number of FM receivers were placed
at different points in the serving area to receive the signal from all
vehicles. These transmitters and receivers were then connected to a
control terminal in a local switch. Roaming features were now provided.
However, because the complete routing information was not
available to the local switch, a land-originated call to a roaming
mobile had to be completed manually by telephone operators. The
mobile unit could scan all available channels, lock onto an idle one,
and then start dialing. Signaling was done using low-frequency
audio tones. The maximum range between a serving transmitter and
a mobile unit was about 25 miles. To provide satisfactory operation,
frequencies could be reused but only at distances of 75 miles or more.
【目 录】:
Chapter 1 Introduction
Chapter 2 Propagation Characteristics of a Mobile Radio Channel
Chapter 3 Principles of Wideband CDMA (WCDMA)
Chapter 4 cdmaOne and cdma2000
Chapter 5 The GSM System and General Packet Radio
Chapter 6 Universal Mobile Telecommunications System (UMTS)
Chapter 7 Evolution of Mobile Communication Networks
Chapter 8 Call Controls and Mobility Management
Chapter 9 Quality of Service (QoS) in 3G Systems
Chapter 10 Network Planning and Design
Chapter 11 Beyond 3G
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发表于 2006-9-12 15:08:00
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