Page 13 - Integrated Wireless Propagation Models

C o n t e n t s XI

5.4.1 The Motley-Keenan Model (Empirical) and a
Comparison w i th the Lee Model . . . . . . . . . . . . . . . . . . 320
5.4.2 Ericsson Multiple-Breakpoint Model (Empirical) 323
5.5 ITU Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
5.5.1 COST 231 Multiwall Model (Empirical) . . . . . . . . . . . . 325
5.5.2 ITU-R 1238 (Empirical) . . . . . . . . . . . . . . . . . . . . . . . . . . 326
5.6 Physical Models-Application of Geometrical Theory of
Diffraction (GTD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
5.6.1 Ray-Tracing Model for In-Building (Picocell) . . . . . . . 328
5.6.2 FDTD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
5.7 Summary and Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336

6 The Lee Comprehensive Model-Integration of the
Three Lee Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
6.2 Integrating the Three Lee Models . . . . . . . . . . . . . . . . . . . . . . . . . 342
6.2.1 Validation of the Macrocell Model . . . . . . . . . . . . . . . . . 343
6.2.2 Validation of the Microcell Model . . . . . . . . . . . . . . . . . 345
6.2.3 Validation of the In-Building Model
(Picocell Model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
6.3 System Design Aspects Using Different Prediction Models 345
6.3.1 Preparing to Design a System . . . . . . . . . . . . . . . . . . . . . 345
6.3.2 Design Parameters and Input Data . . . . . . . . . . . . . . . . 346
6.3.3 System Coverage in General . . . . . . . . . . . . . . . . . . . . . . 347
6.3.4 CDMA Coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
6.3.5 System Design in Special Areas with
New Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 2
6.4 User's Menu of the Lee Comprehensive Model . . . . . . . . . . . . . 364
6.4.1 The Overall System Design Chart from the Lee
Comprehensive Model . . . . . . . . . . . . . . . . . . . . . . . . . . 364
6.4.2 In-Building Cell-Point-by-Point Analysis for the
Lee In-Building Model . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
6.4.3 Microcell-Point-by-Point Analysis for the
Lee Microcell Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370
6.4.4 Macrocell-Point-by-Point Analysis for the
Lee Macrocell Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 372
6.5 How to Use Prediction Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375
6.5.1 Radio Communication Link-The Channel . . . . . . . . . 376
6.5.2 Types of Noise, Losses, and Gain . . . . . . . . . . . . . . . . . 376
6.5.3 Received Signal Power and Noise Power . . . . . . . . . . . 377
6.5.4 Required Information for Calculating Link Budget 379
6.5.5 Link Budget Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379
6.6 How to Plan and Design a Good Wireless System . . . . . . . . . . . 381
6.6.1 Understanding the System Requirement . . . . . . . . . . . 381
6.6.2 Choosing the Right Prediction Model . . . . . . . . . . . . . . 381