Wireless Link Characteristics Differences from wired link . o decreased signal strength:radio signal attenuates as it propagates through matter (path loss) o 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 o 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" 6:Wireless and Mobile Networks 6-106: Wireless and Mobile Networks 6-10 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