xiaoxu 2006-12-11 14:00
北电CDMA技术详解
以下为一般性带附件资料发贴选项：
【资料成文时间】：
【语言】：English
【页数】：160
【何人（公司）所著】：Nortel
【文件格式】：pdf
【文件原名】：CDMA809AV04.02_Student_Guide.pdf
【摘要或目录】：
[b]Lesson 1[/b]
CDMA basics 1-1
Objectives 1-1
Terms 1-2
Introduction 1-4
Major subsystems of a CDMA system 1-7
CDMA channels 1-9
Spread spectrum principles 1-10
[b]Lesson 2[/b]
Spectrum usage and system capacity 2-1
Objectives 2-1
Spectrum usage and system capacity 2-2
Signal strength (Eb/N0) and S/N 2-3
Overlaying CDMA on an AMPS system 2-6
800 MHz cellular spectrum utilization 2-7
Deploying CDMA on the 1900 MHz band 2-8
Overlaying CDMA on the 1900 MHz band 2-11
CDMA frequency channel assignment at 800 MHz (Cellular) 2-13
What happens during a call? 2-17
[b]Lesson 3[/b]
CDMA forward channels 3-1
Objectives 3-1
Forward channel coding process 3-2
Sampling 3-5
Quantizing 3-5
Simplified vocoder functions 3-6
Signal regeneration 3-9
Pilot channel 3-26
Sync channel 3-31
viii Contents Nortel Networks Confidential
Course 809A Standard 04.02 October 2000 For training purposes only
Paging channels 3-41
[b]Lesson 4[/b]
CDMA reverse channels 4-1
Objectives 4-1
Access channels 4-4
Reverse traffic channels 4-12
[b]Lesson 5[/b]
Power control, registration, and handoffs 5-1
Objectives 5-1
CDMA power control 5-2
Registration 5-11
Handoffs 5-24
Intra-system CDMA-to-analog handoff 5-36
Enhanced hard handoff triggers 5-37
[b]Figures[/b]
Figure 1-1 Why CDMA? 1-4
Figure 1-2 What is Multiple Access? 1-5
Figure 1-3 Multiple access technologies 1-6
Figure 1-4 CDMA system components 1-7
Figure 1-5 Defining our terms 1-9
Figure 1-6 CDMA is a spread-spectrum system 1-10
Figure 1-7 Spread spectrum principles - the “math hammer” 1-11
Figure 1-8 Spread spectrum principles - many code channels 1-12
Figure 1-9 CDMA spreading principle: “Anything We Can Do, We Can Undo” 1-
13
Figure 1-10 “Shipping and Receiving” via CDMA 1-14
Figure 1-11 CDMA’s nested spreading sequences! 1-15
Figure 1-12 Walsh codes 1-16
Figure 1-13 Example of correlation between Walsh Codes 1-17
Figure 1-14 Correlation and Orthogonality 1-17
Figure 1-15 Short PN Sequences 1-19
Figure 1-16 Long PN Sequences 1-20
Figure 1-17 Discriminating among forward code channels 1-21
Figure 1-18 Discriminating among Base Stations 1-22
Figure 1-19 Discriminating among reverse code channels 1-23
Figure 1-20 Summary of characteristics and functions 1-24
Figure 2-1 Spectrum usage and system capacity: Signal Bandwidth, Vulnerability,
and Frequency Reuse 2-2
Figure 2-2 Relationship between Eb/N0 and S/N 2-3
Figure 2-3 S/N advantage of CDMA 2-4
Figure 2-4 Overlaying CDMA on an AMPS system 2-5
Figure 2-5 800 MHz cellular spectrum utilization 2-7
Figure 2-6 Deploying CDMA on the 1900 MHz band 2-8
Figure 2-7 1900 MHz PCS spectrum utilization 2-9
Figure 2-8 Overlaying CDMA on the 1900 MHz band 2-11
Figure 2-9 Number of voice channels (as AMPS channels are converted to
digital) 2-12
Nortel Networks Confidential Contents ix
CDMA Technology Overview Student Guide NBSS9.0
Figure 2-10 CDMA frequency channel assignment at 800 MHz (Cellular) 2-13
Figure 2-11 CDMA frequency clearing: A-band (N=7 reuse pattern) 2-14
Figure 2-12 CDMA frequency clearing: B-band (N=7 reuse pattern) 2-14
Figure 2-13 Overlay guard zone deployment 2-15
Figure 2-14 Other technologies: avoiding interference 2-15
Figure 2-15 CDMA: using a new dimension 2-16
Figure 2-16 The network view 2-17
Figure 2-17 The handset view 2-17
Figure 3-1 CDMA forward traffic channels 3-2
Figure 3-2 CDMA code channels in the forward direction 3-3
Figure 3-3 Coding process on CDMA forward code channels 3-4
Figure 3-4 Digital Stream 0 (DS0) 3-5
Figure 3-5 Variable rate vocoding & multiplexing (Traffic Channels only) 3-6
Figure 3-6 Converting bits into symbols 3-7
Figure 3-7 Spreading symbols into chips 3-8
Figure 3-8 Reversing the process 3-9
Figure 3-9 Forward traffic channels: Vocoding 3-10
Figure 3-10 Variable rate vocoder 3-11
Figure 3-11 Wireless data service 3-12
Figure 3-12 Forward traffic channel generation 3-13
Figure 3-13 Forward traffic channel frame structure 3-14
Figure 3-14 Convolutional encoding and symbol repetition 3-15
Figure 3-15 A very simple convolutional encoder 3-16
Figure 3-16 Rate 1/2, K=9 convolutional encoding 3-17
Figure 3-17 Symbol repetition and power reduction 3-18
Figure 3-18 Symbol puncturing – Rate Set 2 (13 kb vocoder) 3-19
Figure 3-19 Block interleaving 3-20
Figure 3-20 9600 bps block interleaver (input array) 3-21
Figure 3-21 9600 bps block interleaver (output array) 3-22
Figure 3-22 9600 bps de-interleaving 3-23
Figure 3-23 Forward channel demodulation 3-24
Figure 3-24 Putting it all together: CDMA code channels 3-25
Figure 3-25 Pilot channel 3-26
Figure 3-26 Pilot channel generation 3-27
Figure 3-27 Walsh Codes generation 3-28
Figure 3-28 CDMA “Short” and “Long” PN codes 3-29
Figure 3-29 Pilot channel acquisition 3-30
Figure 3-30 Sync channel 3-31
Figure 3-31 Frames and messages 3-32
Figure 3-32 Sync channel generation 3-33
Figure 3-33 Sync channel block interleaver (input matrix) 3-34
Figure 3-34 Sync channel block interleaver (output matrix) 3-35
Figure 3-35 Sync channel block interleaver (block restored) 3-36
Figure 3-36 Sync channel structure 3-37
Figure 3-37 Sync channel message body format 3-38
Figure 3-38 Sync channel message parameters 3-39
Figure 3-39 Sync channel message parameters 3-40
Figure 3-40 Paging channels 3-41
Figure 3-41 Paging channel generation 3-42
Figure 3-42 Paging channel structure 3-43
Figure 4-1 CDMA code channels in the reverse direction 4-2
x Contents Nortel Networks Confidential
Course 809A Standard 04.02 October 2000 For training purposes only
Figure 4-2 Coding process on CDMA reverse code channels 4-3
Figure 4-3 Access channels 4-4
Figure 4-4 Access channel generation 4-5
Figure 4-5 Rate 1/3 convolutional encoder 4-6
Figure 4-6 Access channel block interleaving 4-7
Figure 4-7 Access channel block interleaving (4800 X 2 bps – WRITE
MATRIX) 4-8
Figure 4-8 Access channel block interleaving (4800 X 2 bps – READ MATRIX) 4-
9
Figure 4-9 Access channel slot structure 4-10
Figure 4-10 Access channel probing 4-11
Figure 4-11 CDMA reverse traffic channels 4-12
Figure 4-12 Reverse traffic channel generation 4-13
Figure 4-13 Reverse traffic channel frame structure 4-14
Figure 4-14 Reverse traffic channel: Convolutional encoding and symbol
repetition 4-15
Figure 4-15 Reverse traffic channel: Block interleaving 4-16
Figure 5-1 CDMA power control 5-3
Figure 5-2 Reverse open loop power control 5-4
Figure 5-3 Estimated reverse open loop output power 5-5
Figure 5-4 Reverse closed loop power control 5-6
Figure 5-5 Power output estimations (summary) 5-7
Figure 5-6 Reverse outer loop power control 5-8
Figure 5-7 Forward traffic channel power control 5-9
Figure 5-8 Summary of all power control mechanisms 5-10
Figure 5-9 Roaming 5-11
Figure 5-10 HLR and VLR 5-12
Figure 5-11 CDMA registration 5-13
Figure 5-12 Forms of CDMA registration 5-14
Figure 5-13 Power-up registration 5-15
Figure 5-14 Power-down registration 5-16
Figure 5-15 Timer-based registration 5-17
Figure 5-16 Distance-based registration 5-18
Figure 5-17 Zone-based registration 5-19
Figure 5-18 Parameter-change registration 5-20
Figure 5-19 Implicit registration 5-21
Figure 5-20 Ordered and traffic channel registration 5-22
Figure 5-21 What is Ec/Io 5-24
Figure 5-22 What’s in a handset? 5-25
Figure 5-23 CDMA handoffs 5-25
Figure 5-24 CDMA soft handoff mechanics 5-26
Figure 5-25 Softer handoff 5-27
Figure 5-26 Overall handoff perspective 5-28
Figure 5-27 CDMA-to-CDMA hard handoff 5-29
Figure 5-28 Pilot detection trigger - CELL_PILOT_BEACON sectors 5-31
Figure 5-29 Hard handoff using Beacon Pilot sectors 5-32
Figure 5-30 Boundary sector trigger – border cells 5-33
Figure 5-31 Hard handoff using border sectors 5-35
Figure 5-32 CDMA-to-analog handoff 5-36
[[i] 本帖最后由 xiaoxu 于 2006-12-11 14:47 编辑 [/i]]
xiaoxu 2007-5-10 16:06
[quote]原帖由 [i]farfox[/i] 于 2007-3-13 10:38 发表
你好，有关于北电CDMA的A接口协议的资料吗？ [/quote]
不好意思，没有你需要的资料。