Channel Model

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  • Topic: Radio frequency propagation, Path loss, Decibel
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  • Published : April 26, 2013
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Channel Models A Tutorial
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V1.0 February 21, 2007 Please send comments/corrections/feedback to Raj Jain, jain@acm.org Please send comments to jain@acm.org

1 This work was sponsored in part by WiMAX Forum.

Channel Models: A Tutorial

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V1 Created on 2/21/2007

TABLE CONTENTS
CHANNEL MODELS: A TUTORIAL..................................................................................................................................3 CHANNEL MODELS: A TUTORIAL..................................................................................................................................3 A.1 BASIC CONCEPTS .............................................................................................................................................................3 A.1.1 Channel ....................................................................................................................................................................3 A.1.2 Path Loss..................................................................................................................................................................4 A.1.3 Shadowing ................................................................................................................................................................4 A.1.4 Multipath ..................................................................................................................................................................5 A.1.5 Tapped Delay Line Model ........................................................................................................................................7 A.1.6 Doppler Spread ........................................................................................................................................................7 A.2 EMPIRICAL PATH LOSS MODELS ......................................................................................................................................8 A.2.1 Hata Model...............................................................................................................................................................8 A.2.2 COST 231 Extension to Hata Model ........................................................................................................................9 A.2.3 COST 231-Walfish-Ikegami Model ..........................................................................................................................9 A.2.4 Erceg Model ...........................................................................................................................................................12 A.2.5 Stanford University Interim (SUI) Channel Models...............................................................................................14 A.2.6 ITU Path Loss Models............................................................................................................................................18 REFERENCES ......................................................................................................................................................................21

Table of Figures
FIGURE A.1.1: CHANNEL FIGURE A.1.2: PATH LOSS, SHADOWING, AND MULTIPATH [GOLDSMITH2005] FIGURE A.1.3: SHADOWING FIGURE A.1.4: MULTIPATH FIGURE A.1.5: MULTIPATH POWER DELAY PROFILE FIGURE A.1.6: TAPPED DELAY LINE MODEL FIGURE A.2.1: PARAMETERS OF THE COST-231 W-I MODEL [MOLISCH2005] FIGURE A.2.2: STREET ORIENTATION ANGLE [CICHON] FIGURE A.2.5.1: GENERIC STRUCTURE OF SUI CHANNEL MODELS 3 6 5 5 6 7 10 11 15

List of Tables
TABLE A.1.1: TYPICAL DOPPLER SPREADS AND COHERENCE TIMES FOR WIMAX [ANDREWS2007] 8 TABLE A.2.1: PARAMETERS OF THE ERCEG MODEL 13 TABLE A.2.5.1: TERRAIN TYPE AND DOPPLER SPREAD FOR SUI CHANNEL MODELS 14 TABLE A.2.5.1: SCENARIO FOR SUI CHANNEL MODELS 15 TABLE A.2.5.1: SUI – 1 CHANNEL MODEL 16 TABLE A.2.5.2: SUI – 2 CHANNEL MODEL 16 TABLE A.2.5.3: SUI – 3...
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