Relayed communication with versatile self-interference...

Details Relayed communication with versatile self-interference... Relayed communication with versatile self-interference...

2008-03-25

2008-03-25

Ghebretinsae, Temesghen (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S211000, C455S063100, C455S296000, C359S199200

Reexamination Certificate

active

07349505

ABSTRACT:
Methods, apparatuses, and systems are presented for providing self-interference cancellation in two-way relayed electromagnetic communication between a first and a second device through a relay station, involving retrofitting existing equipment comprising a transmitter system and a receiver system at the first device by adding a canceler module, providing a version of a modulated near signal as a first non-baseband interface signal from the transmitter system to the canceler module, providing a version of a composite signal as a second non-baseband interface signal from the receiver system to the canceler module, generating a cancellation signal at the canceler module corresponding to a relayed version of the modulated near signal, using the first and the second non-baseband interface signals, applying the cancellation signal at the canceler module to a version of the second non-baseband interface signal, to produce a cancellation-processed signal as a third non-baseband interface signal provided to the receiver system.

REFERENCES:
patent: 5596439 (1997-01-01), Dankberg et al.
patent: 5691978 (1997-11-01), Kenworthy
patent: 6011952 (2000-01-01), Dankberg et al.
patent: 6725017 (2004-04-01), Blount et al.
patent: 6907093 (2005-06-01), Blount et al.
patent: 2002/0197958 (2002-12-01), Collins et al.

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