Mon March 03, 2008 By:


Expert Reply
Fri May 16, 2008

Line of sight communication.:

High gain antennas are needed to compensate for the

high free space damping. Gain per antenna around 30 dB.

(could be acomplished with antenna arrays).

The problem with LOS communication : --


:Link is broken if somebody steps into the beam.


Solution: use indirect non-line of sight paths as back up links.

•This involves the reflections off the walls (billard)

•One would also need smart antennas


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