Variable throughput reduction spread-spectrum communications

Details Variable throughput reduction spread-spectrum communications Variable throughput reduction spread-spectrum communications

2005-05-17

2005-05-17

Vo, Don N. (Department: 2631)

Pulse or digital communications

Spread spectrum

Direct sequence

Reexamination Certificate

active

06895037

ABSTRACT:
A spread-spectrum system having a transmitted data rate determined by an error rate syndrome at a spread-spectrum receiver. Data are demultiplexed into a plurality of data channels, and spread-spectrum processed as a plurality of spread-spectrum channels. A combiner combines the plurality of spread-spectrum channels as a code-division-multiplexed signal. At a receiver, the code-division-multiplexed signal is despread into a plurality of despread channels. A multiplicity of adders, which is electronically controlled by an adder-control signal, adds several of the despread channels to generate a multiplicity of added channels. A syndrome signal is generated from an error rate of the multiplicity of added channels. From the syndrome signal, a desired-data rate is determined for the spread-spectrum transmitter.

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patent: 5673286 (1997-09-01), Lomp
patent: 5926500 (1999-07-01), Odenwalder
patent: 6075809 (2000-06-01), Naruse
patent: 6192066 (2001-02-01), Asanuma
patent: 6289039 (2001-09-01), Garodnick

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