WCDMA简介

liao1liao

【文件名】:06516@52RD_Introduction to 3G WCDMA Radio Communications System.doc
【格　式】:doc
【大　小】:2172K
【简　介】:
【目　录】:
1. Introduction................................................... 4
2. Principles of WCDMA............................................ 5
2.1 Short history of spread spectrum communications.................................... 5
2.2 Direct sequence spread spectrum system............................................ 5
2.3 Generating the spreading sequences................................................ 6
2.4 Multiple access methods......................................................... 8
2.5 Benefits of the CDMA........................................................... 9
3. Overview of the Physical Layer................................ 11
3.1 Physical layer in OSI model.................................................... 11
3.2 Services provided by L1........................................................ 12
3.3 3GPP L1 Channels.............................................................. 13
3.3.1 Transport channels....................................................... 13
3.3.2 Physical channels........................................................ 15
3.3.3 Mapping of transport channels onto physical channels..................... 16
3.4 Internal structure of the L1.................................................... 17
3.5 L1 communications services...................................................... 18
3.5.1 Random access communications............................................. 18
3.5.2 Dedicated channel communications......................................... 18
4. Fundamentals of UHF Radio waves............................... 20
4.1 Physical properties of UHF radio waves........................................... 20
4.2 Reflection, refraction and fading............................................... 20
5. WCDMA RF...................................................... 22
5.1 Frequency bands............................................................... 22
5.2 Structure of WCDMA handset RF.................................................. 23
5.3 Duplexing..................................................................... 23
5.4 RF generation................................................................. 24
5.5 Modulation.................................................................... 24
5.6 Filtering..................................................................... 24
5.7 Power amplification and measurement.............................................. 24
5.8 Demodulation.................................................................. 25
5.9 Interference characteristics.................................................... 25
6. WCDMA BB TraNSmitter.......................................... 26
6.1 Functional specification of BB TX............................................... 26
6.2 Generation of channelization and scrambling sequences.............................. 26
6.3 Actual implementation of BB TX.................................................. 27
7. WCDMA BB Receiver............................................. 28
7.1 Chip filtering................................................................ 28
7.2 Rake......................................................................... 28
7.3 Channel estimation............................................................. 29
7.4 AFC.......................................................................... 29
7.5 AGC.......................................................................... 30
8. Channel coding................................................ 31
8.1 CRC coding................................................................... 31
8.2 Convolutional coding........................................................... 32
8.3 Turbo coding.................................................................. 33
8.4 Interleaving.................................................................. 34
9. Decoding...................................................... 35
9.1 Viterbi decoding.............................................................. 35
9.2 Turbo decoding................................................................ 36
9.3 Error detection............................................................... 37
9.4 Blind transport format detection................................................ 37
10. Multiplexing................................................. 38
10.1  L1 channel structure......................................................... 38
10.2  QoS balancing............................................................... 39
11. Power control................................................ 41
11.1  Outer loop power control...................................................... 41
11.2  Inner loop power control...................................................... 41
12. Diversity techniques......................................... 42
12.1  Site selection diversity...................................................... 42
12.2  Closed loop transmit diversity................................................ 43
12.3  Space-time transmit diversity................................................. 43
Literature....................................................... 45

weid

Thanks for you!

bird2000

<P>好人啊,现在免费的东西真不多了</P>[em03]

naohu1010

<P>多谢！</P>

Tomnyang

好东西，谢谢！！

benjamin86

好东西，入门中、、、、、

iducky

感谢，下载中

foriever

真是好人啊，现在免费提供资料的人可是不多了。这样的好人绝对要顶！！！

ztc

谢谢搂主

wolf1861

english?

lrmei

免费的东西太少了，非常感谢！下载中。。。

robbiesh

谢谢搂住了；

wistron2008

楼主伟大的[em01][em01][em01]

zhanfenger

真是好人啊，现在免费提供资料的人可是不多了。这样的好人绝对要顶！！！
[em02][em02]

fant_sy

真是好人啊，