无线通信原理

dong4056

无线通信原理
【文件名】:11615@52RD_无线通信原理.pdf
【格　式】:pdf
【大　小】:1646K
【简　介】:
【目　录】:
1．无线信道...................................................................1
1．1自由空间无线电波传播..................................................................................................1
1．2移动通信的电波传播特点..............................................................................................1
1．3移动通信电波传播特性..................................................................................................2
1．3．1短期（快）衰落................................................................................................3
1．3．2长期（慢）衰落................................................................................................6
1．3．3衰落特性............................................................................................................6
1．4电波传播损耗预测模型..................................................................................................6
1．4．1 Okumura-Hata模型...........................................................................................7
1．4．2 COST231 Walfisch-Ikegami模型.....................................................................9
1．5覆盖设计........................................................................................................................10
1．5．1传播模型的选用及修正..................................................................................11
1．5．1基站覆盖预测..................................................................................................11
1．5．3功率控制..........................................................................................................14
2．分集技术.................................................................15
2．1分集技术的概念.............................................................................................................15
2．2分集技术的分类.............................................................................................................15
2．3显分集技术....................................................................................................................15
2．3．1空间分集..........................................................................................................15
2．3．2极化分集..........................................................................................................16
2．4显分集的合并技术........................................................................................................18
2．4．1信号合并准则..................................................................................................18
2．4．2最大信噪比准则下的信号合并方法..............................................................18
2．5隐分集技术....................................................................................................................19
3．无线通信多址技术.................................................21
3．1 多址技术概述...............................................................................................................21
3．2 频分多址.......................................................................................................................21
3．3 时分多址.......................................................................................................................22
3．4 码分多址.......................................................................................................................22
3．5 扩频技术.......................................................................................................................25
3．6 空分多址.......................................................................................................................27
4．无线通信中的资源分配原理及算法举例.............31
4．1蜂窝的概念....................................................................................................................31
4．2以GSM为例介绍FCA................................................................................................31
4．3 PHS无线市话的频率使用...........................................................................................33
4．3．1频率分配..........................................................................................................33
4．3．2 PHS 频率指配................................................................................................35
4．4多信道共用技术............................................................................................................35
4．5微蜂窝与信道动态分配技术........................................................................................38

zkymh123

[em03]

snoworange

这还要钱！

happy2008sky

thanks