Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2008-02-13
2011-11-08
Ahn, Sam K (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
Reexamination Certificate
active
08054867
ABSTRACT:
An apparatus is provided for transmitting data signals and additional information signals having partially overlapping frequency bands simultaneously within a wire based communication system over the same wired medium using a spread spectrum technique for modulating the additional information signals.
REFERENCES:
patent: 5870385 (1999-02-01), Ahmadi et al.
patent: 6597671 (2003-07-01), Ahmadi et al.
patent: 7110435 (2006-09-01), Sorrells et al.
Cranford, Jr. Hayden C.
Schmatz Martin
Ahn Sam K
International Business Machines - Corporation
MacKinnon Ian D.
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