RADIO PROPAGATION FOR MODERN WIRELESS APPLICATIONS
Ouvrage 0-13-026373-7 : RADIO PROPAGATION FOR MODERN WIRELESS APPLICATIONS
State-of-the-art propagation prediction techniques
and models Accurate new models for terrain,
buildings, and walls Detailed comparisons with
actual measurements taken in the field Multipath
models, plane wave propagation, diffraction, and
more
The definitive text on wireless radio propagation
modeling, by one of the world's leading experts.
To build wireless systems that deliver maximum
performance and reliability, engineers need a
detailed understanding of radio propagation.
Drawing on over 15 years of experience, leading
wireless communications researcher Henry Bertoni
presents the most complete discussion of
techniques for predicting radio propagation ever
published. From its insightful introduction on
spectrum reuse to its state-of-the-art real-world
models for buildings, terrain, and foliage, Radio
Propagation for Modern Wireless Systems delivers
invaluable information for every wireless system
designer. Coverage provides: A door to the
understanding of radio wave propagation for the
wireless channel. In-depth study of the effects on
path loss of buildings, terrain, and foliage. A
unified view of key propagation effects in
narrowband and wideband systems, including spatial
variation, angle of arrival, and delay spread.
Readable account of diffraction at building corners, with
worked out examples. Never-before-published
coverage of mobile-to-mobile path loss in cities.
Effective new ray-based models for site-specific
predictions and simulation of channel statistics.
Simulations of fast fading and shadow loss.
From start to finish, Radio Propagation for Modern
Wireless Systems presents sophisticated
models-and compares their results with actual field
measurements. With thorough coverage and
extensive examples from both narrowband and
wideband systems, it can help any wireless designer
deliver more powerful, cost-effective services.
HENRY BERTONI is Professor in the Department of
Electrical Engineering, Polytechnic University,
Brooklyn, New York. There, he teaches one of the
world's leading courses in wireless propagation,
as part of the University's program in Wireless
Networks. @ISBN: = 0-13-026373-7
Table of Contents
1. The Cellular Concept and the Need for
Propagation
Prediction.
Concept of spatial reuse. Linear cells as an
example of FDMA
spectrum reuse. Hexagonal cells for area coverage.
a--Symmetric reuse patterns. b--Interference for
symmetric reuse patterns. Sectored cells. Spatial
reuse for CDMA. Summary. Problems. References.
2. Survey of Observed Characteristics of the
Propagation Channel.
Narrowband signal measurements. a--Signal variation
over small areas: fast fading. b--Variations of
the small-area average: shadow fading.
c--Separating shadow fading from range dependence.
Slope-intercept models for macrocell range
dependence. Range dependence for microcells: influence
of street geometry. a--LOS paths. b--Zigzag and
staircase paths in Sunset and Mission districts.
c--Non-LOS paths in the high-rise core of San
Francisco. Multipath model for fast fading and other
narrowband effects. a--Frequency fading.
b--Time-dependent fading. c--Doppler spread.
d--Depolarization. Narrowband indoor signal
propagation. a--Fast fading for indoor links.
b--Distance dependence of small-area average.
Channel response for pulsed excitation. a--Power
delay profile. b--Fading characteristics of
individual pulses. c--Measures of time-delay spread.
d--Coherence bandwidth. Multipath observed at
elevated base station antennas. Summary.
Problems. References.
3. Plane Wave Propagation, Reflection, and
Transmission.
Plane waves in an unbounded region. a--Phasor
notation. b--Propagation oblique to the coordinate
axes. c--Fast fading due to several plane waves.
d--Correlation function and Doppler spread.
e--Fading at elevated base stations. Reflection of
plane waves at planar boundaries --62 3.2a--Snell's
law. b--Reflection and transmission coefficients
for TE polarization. c--Reflection and transmission
coefficients for TM polarization. d--Height gain
for antennas above ground. e--Reflection of
circularly polarized waves. Plane wave incidence on
dielectric layers. a--Reflection at a brick wall.
b--Reflection at walls with loss. c--Transmission
through walls of uniform construction.
d--Transmission through in-situ walls and floors.
Summary. Problems. References.
4. Antennas and Radiation.
Radiation of spherical waves. Receiving antennas,
reciprocity, and path gain or loss. a--Path gain or
loss. b--Effective area of a receiving antenna.
c--Received power in the presence of a multipath.
Two-ray model for propagation above a flat earth.
a--Breakpoint distance. b--Two-slope regression
fit. LOS Propagation in an urban canyon.
Cylindrical waves. Summary. Problems. References.
5. Diffraction by Edges and Corners.
Local nature of propagation. a--Evaluation of the
field distortion. b--Interpretation of the local region
in terms of Fresnel zones. Plane wave diffraction
by an absorbing half-screen. a--Field in the
illuminated region y > 0. b--Field in the shadow
region y
6. Propagation in the Presence of Buildings on Flat
Terrain.
Modeling propagation over rows of low buildings.
a--Components of the path gain. b--Modeling
PG2 by diffraction of the rooftop fields.
Approaches to computing the reduction PG1 of the rooftop
fields. a--Physical optics approach to computing
field reduction. b--Solutions for uniform row
spacing and building height. Plane wave incidence
for macrocell predictions. a--Solution in terms of
Borsma's functions. b--Using the settled field to
find the path loss. Cylindrical wave incidence for
microcell predictions. a--Solution in terms of
Borsma's functions. b--Path loss for low base station
antennas. c--Path loss for mobile-to-mobile
propagation. d--Propagation oblique to rows of
buildings. Numerical evaluation of fields for
variable building height and row spacing. a--Windowing
to terminate the integration. b--Discretization of
the integration. c--Height dependence of the settled
field. d--Influence of roof shape. Summary.
Problems. References.
7. Shadow Fading and the Effects of Terrain and
Trees.
Shadow fading statistics. a--Variation of the
rooftop fields. b--Combined variations for street-level
signal. Modeling terrain effects. a--Paths with LOS
to the rooftops near the subscriber. b--Paths with
diffraction over bare wedge-shaped hills. c--Paths
with diffraction over bare cylindrical hills.
d--Diffraction of cylindrical waves over hills with
buildings. e--Path loss formulas for
building-covered hills. Modeling the effects of
trees. a--Propagation to subscribers in forested areas.
b--Path loss to subscribers in forest clearings.
c--Rows of trees in residential areas. Summary.
Problems. References.
8. Site-Specific Propagation Prediction.
Outdoor predictions using a two-dimensional
building database. a--Image and pincushion methods.
b--Ray contributions to total power. c--Comparison
of predictions with measurements.
Two-dimensional predictions for a Manhattan street
grid. a--Path loss in turning one corner.
b--Predictions made using two-dimensional ray
methods. Outdoor predictions using a
three-dimensional building database.
a--Three-dimensional pincushion method. b--Vertical plane
launch method. c--Slant plane-vertical plane
method. d--Monte Carlo simulation of higher-order
channel statistics. Indoor site-specific
predictions. a--Transmission through floors. b--Effect of
furniture and ceiling structure on propagation over
a floor. Summary. Problems. References.
Index.
Auteur : BERTONI
Editeur : PRENTICE HALL
Nombre de pages : 258
Date de publication : 01 2000
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