Madge Networks 802.11b Manuale Utente Pagina 18

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Wireless Link Characteristics
Differences from wired link ….
Decreased signal strength: radio signal attenuates
as it propagates through matter (path loss)
Interference from other sources: standardized
wireless network frequencies (e.g., 2.4 GHz)
shared by other devices (e.g., phone); devices
(motors) interfere as well
Multipath propagation: radio signal reflects off
objects ground, arriving ad destination at slightly
different times
…. make communication across (even a point to point)
wireless link much more “difficult”
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