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Deploying Wireless Lans / Edition 1
     

Deploying Wireless Lans / Edition 1

by Gilbert Held, M. Spencer
 

ISBN-10: 0071380892

ISBN-13: 9780071380898

Pub. Date: 12/01/2001

Publisher: McGraw-Hill Companies, The

Wireless LANs Are On the Rise. Are You Prepared to Seize the Opportunity?

Here is the network professional's guide to the new standards, products, and broadband options that make wireless networks as fast and reliable as wired ones.

Wireless LANs are on the brink of living up to their promise of mobility, speed, ease of installation, and lower cost of

Overview

Wireless LANs Are On the Rise. Are You Prepared to Seize the Opportunity?

Here is the network professional's guide to the new standards, products, and broadband options that make wireless networks as fast and reliable as wired ones.

Wireless LANs are on the brink of living up to their promise of mobility, speed, ease of installation, and lower cost of ownership as compared to wired ones. Recent market drivers such as the newly adopted 802.11b standard for improved data rates, new product classes, better pricing, and emerging broadband access markets for home and business have ushered in the era of wireless LANs. And network managers suddenly need to know all about them — what they're good at, how to operate them, and what to buy.

In Deploying Wireless LANs, Gil Held clearly and thoroughly explains how to plan and build wireless LANs capable of supporting mobile devices and applications. Gil, the author of over 20 books, uses a straightforward, jargon-free style — and no background in radio frequency engineering is necessary to understand it all.

Packed with easy-to-understand information, Deploying Wireless LANs:

  • Covers 802.11a, Home RF, Bluetooth, and Wi-Fi
  • Details how to make your 802.11 LAN fully compliant with 802.3 and Bluetooth
  • Explains common access points and how they're changing LAN options
  • Introduces basic transmission troubleshooting techniques

This is a must-have resource for network managers and integrators, mobile device vendors, access providers and anyone else who wants to ride the upcoming wireless LAN wave.

Product Details

ISBN-13:
9780071380898
Publisher:
McGraw-Hill Companies, The
Publication date:
12/01/2001
Series:
McGraw-Hill Telecom Professional Ser.
Pages:
336
Product dimensions:
0.70(w) x 7.50(h) x 9.25(d)

Table of Contents

Prefacexv
Acknowledgmentsxvii
1Introduction to Wireless LANs1
Overview3
Operation3
Network Configurations4
Roaming6
Extension Points6
Communications Methods8
Infrared8
Microwave9
Radio Frequency9
Benefits11
Utilization11
Hospital Use12
College Use13
Inventory Control13
Internet Access14
Training Centers14
Facilitating Networking15
Trade Show Use15
Benefits16
Constraints17
Book Preview18
Terminology and Technology19
Understanding Wireless LAN Modulation19
Understanding Wireless LAN Communications Systems20
Wireless LAN Hardware20
IEEE Wireless LAN Standards21
Installing a Wireless LAN22
The Home RF Standard22
The Future22
2Terminology and Technology23
Basic Communications Concepts24
Powers of Ten25
Frequency26
Wavelength27
The Frequency Spectrum29
Bandwidth32
Power Measurements32
Signal-to-Noise Ratio37
Transmission Rate Constraints41
Nyquist Relationship42
Radio Frequency Spectrum Allocation45
U.S. Spectrum Allocation46
Applications49
Other Transmission Impairments50
Basic Wireless LAN Components51
Path Loss52
Multipath Propagation56
Fading57
Enhancing Signal Reception58
3Understanding Wireless LAN Modulation61
Basic Modulation Methods62
Rationale62
Modulation Process63
Amplitude Modulation64
Frequency Modulation65
Phase Modulation67
Wireless LAN Modulation Methods74
DSSS Modulation75
Differential Binary Phase Shift Keying (DBPSK)75
Differential Quadrature Phase Shift Keying (DQPSK)76
Complementary Code Keying (CCK) QPSK78
Frequency Hopping Spread Spectrum (FHSS) Modulation79
Gaussian Frequency Shift Keying (GFSK)79
Orthogonal Frequency Division Multiplexing (OFDM) Modulation80
Quadrature Amplitude Modulation (QAM)82
4Wireless LAN Communications Systems85
Spread Spectrum Communications86
Development Rationale86
General Operation87
Spread-Spectrum Methods88
Direct Sequence Spread Spectrum (DSSS)89
Frequency Hopping Spread Spectrum91
Regulations91
Operational Parameters93
Packet Transmission Capability94
Hopping Modes94
Advantages of Use95
Direct Sequence Spread Spectrum97
Regulation97
Operation98
Using the Chipping Code99
Bandwidth Spreading100
Advantages of Use101
Disadvantages102
Coded Orthogonal Frequency Division Multiplexing103
Evolution103
Overview105
Operation107
Scrambling and Coding108
Advantages of Use110
Disadvantages110
5Wireless LAN Hardware113
Wireless Access Point114
Evolution115
Equipment Connection115
Using a Single Access Point117
Using Multiple Access Points118
Wireless LAN Network Cards123
Wireless Bridges127
Wireless Router/Gateway136
6IEEE Wireless LAN Standards145
The 802.11 Standards146
Overview147
Topology148
Portals152
The Physical Layer152
Modulation154
Frame Format155
Hopping Sequence156
Direct Sequence Spread Spectrum157
Overview157
Modulation157
Frequency Allocation158
Frame Format158
Infrared159
Modulation160
Frame Format161
The MAC Layer162
Basic Access Method162
Minimizing Collisions163
Interframe Spaces166
Collision Avoidance167
Frame Types167
RTS Frame177
CTS Frame177
ACK Frame178
Operation179
Joining an Existing Cell179
Authentication and Association180
Roaming180
The 802.11b Standard Extension182
Overview183
Operation183
Modulation183
The IEEE 802.11a Standard Extension190
Overview190
Modulation191
Frame Format191
Operation193
7Installing a Wireless LAN195
The SMC Networks Barricade Router196
Product Overview196
Features197
Site Location198
Wireless Positioning198
Connectivity Tradeoffs199
Using WINIPCFG200
Software Setup202
Verifying Computer--Router Connectivity203
Configuring the Router204
Configuration Options205
Wireless Settings216
Return to WINIPCFG217
The SMC Networks EZ Connect PC Card218
Driver Installation219
Configuration Utility222
Agere Systems Orinoco PC Card227
Installation227
The Client Manager232
Proof of the Pudding234
8The Home RF Standard237
Overview238
Versions239
Network Architecture240
Nodes240
System Requirements241
Technical Characteristics241
FHSS Use241
Power, Operating Rate, and Modulation242
Device Support242
Security243
Data Compression244
Home RF Operation244
The Physical Layer245
The MAC Layer245
Frame Duration and Types246
Frame Operations247
9The Future251
FCC Part 15 Ruling252
Overview252
ISM Band Use253
RF Interference254
The IEEE 802.11g Standard255
Backward Compatibility Issues256
Area of Coverage Consideration257
The IEEE 802.1x Standard257
Overview258
Operation258
Great Expectations260
AiroPeek, A Wireless Protocol Analyzer260
Overview261
Capturing Traffic262
Protocol Summary264
Packet Decoding265
AHardware Manufacturers267
Locating Wireless Equipment on eBay271
Equipment Location272
The Bidding Process277
BWireless LAN Economics279
Limited Client-Based Wireless LAN280
Access Point/Router-Based Wireless LAN282
Wired LAN Access283
CPractical Communications Security285
Glossary289
Index303

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