Sony Ericsson GR47 Integrator's Manual page 62

LZT 123 7589 R2B
HINTS FOR INTEGRATING THE RADIO DEVICE
• Path-loss occurs as the strength of the received signal
steadily decreases in proportion to the distance from the
transmitter.
• Shadowing is a form of environmental attenuation of radio
signals caused by hills, buildings, trees or even vehicles.
This can be a particular problem inside buildings, especially
if the walls are thick and reinforced.
• Multi-path fading is a sudden decrease or increase in the
signal strength. This is the result of interference caused
when direct and reflected signals reach the antenna
simultaneously. Surfaces such as buildings, streets,
vehicles, etc., can reflect signals.
• Hand-over occurs as you move from one cell to another in
the GSM network. Your mobile application call is transferred
from one cell to the next. Hand-over can briefly interfere with
communication and may cause a delay, or at worst, a
disruption.
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