Spread spectrum radio communication system
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United States of America Patent
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Jan 12, 1993
Issued Date -
N/A
app pub date -
Feb 8, 1991
filing date -
Jul 19, 1985
priority date (Note) -
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Abstract
A data entry and retrieval system utilizing a plurality of remote units in radio communication with a plurality of base units in electronic communication with a central processing computer. The base units establish links with transmitting remote units by the remote units choosing the base units with the best signal. The linked remote unit and base unit transmit using frequency hopping spread spectrum modulation, using a predetermined frequency hopping sequence and at a point in the sequence unique to the particular base unit. The system may be configured with a plurality of NODES, each of which has a unique predetermined frequency hopping sequence and assigned base units and remote units.
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