MIS 111 Lecture Notes - Lecture 11: Multipath Propagation, Wireless Lan, Temporal Key Integrity Protocol

• School: University of Arizona
• Department: Management Info Systems Main
• Course: MIS 111
• Professor: W.Neumann, M.Patton

Document Summary

Differences from wired link make communication across (even a point to point) wireless link much more difficult . Radio signal attenuates as it propagates through matter (path loss) 2. 4 ghz) shared by other devices (ex. phone) and general noise sources. Radio signal reflects off objects ground, arriving at destination at slightly. Wireless transmission over unguided media refers to the methods of carrying data through the air using infrared, radio, or microwave signals. Human voice meets the criteria for wireless transmission: Channels 1, 6 and 11 are non-overlapping. Each ap coverage area is called a cell . Restricts use of some personal email clients. Only those with ua netids can connect. Microwave signals travel in a straight line. Long distance terrestrial data link stations are typically 30+ miles apart. Links can be rapidly deployed across difficult terrain. No physical barriers can exist between transmitter and receiver.