Communication within buildings

Details Communication within buildings Communication within buildings

2002-08-19

2008-09-16

Ghayour, Mohammad (Department: 2611)

Pulse or digital communications

Spread spectrum

Reexamination Certificate

active

07426231

ABSTRACT:
A system for communicating between stations which are at a number of different locations in a large building in which radio transmission is achieved through corridors or stairwell shafts or through windows along a zone outside of the building or any combination thereof. This system employs communication through spread spectrum transceivers and a set of directional antennas. At each station, one of the antennas is circular polarized and the other is linear polarized with a horizontal electrical component to facilitate reflection off the floors of the building. The spread spectrum is a hybrid frequency hopped and direct sequence modulated signal.

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