Synchronization-free spread-spectrum demodulator

Details Synchronization-free spread-spectrum demodulator Synchronization-free spread-spectrum demodulator

1996-08-05

1999-12-21

Vo, Don N.

Pulse or digital communications

Repeaters

Testing

375208, 375207, H04L 2730, H03D 100

Patent

active

060058862

ABSTRACT:
A system for transmitting and receiving spread-spectrum communications without having to synchronize the incoming spread-spectrum code at a receiver with a copy of the spreading sequence. A spreading signal itself is modulated with an information signal. Consequently, the various demodulation techniques available to the receiver enable the transmission of unmodified analog as well as digital data. The receiver first removes the carrier wave component, and then the spreading signal from the information stream without costly and complex synchronization of the spreading signals.

REFERENCES:
patent: 4449230 (1984-05-01), Yokoya
patent: 5353301 (1994-10-01), Mitzlaff
patent: 5442662 (1995-08-01), Fukasawa et al.

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