Spread spectrum communication system

Details Spread spectrum communication system Spread spectrum communication system

1997-08-27

2000-10-31

Ton, Dang

Multiplex communications

Communication over free space

Combining or distributing information via time channels

370335, H04J 306

Patent

active

061413372

ABSTRACT:
Before transmitting an upward traffic packet of a long code, a mobile terminal sends a short packet including a short code to a reservation channel. A base station measures delay of each packet by an initial acquisition circuit to establish chip synchronization timing and a packet de-multiplexer to separate from each other packets overlapped in time with each other. When spreading the long-code packet transmitted via a traffic channel from the mobile terminal, information of the measured delay time is synchronously despread by setting a coefficient at an appropriate point of timing to a matched filter.

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U.S. Ser. No. 08/690,819 filed on Aug. 1, 1996.

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