Pulse or digital communications – Transceivers
Reexamination Certificate
2008-04-04
2009-11-03
Tran, Khai (Department: 2611)
Pulse or digital communications
Transceivers
C375S260000
Reexamination Certificate
active
07613234
ABSTRACT:
A transceiver according to the present invention receives data from a plurality of frequency separated transmission channels from a complementary transmitter and includes an interference filter for correcting for interference from transmitters other than the complementary transmitter. The interference filter, for example, can correct for near-end cross-talk and echo interference filtering and/or far-end crosstalk interference filtering is presented. A transceiver can include a transmitter portion and a receiver portion with one or more receivers coupled to receives signals in the plurality of frequency separated transmission channels. A baseband transmitter can be combined with one or more transmitters that transmit data into one of the frequency separated transmission bands. Any combination of modulation systems can be utilized (e.g. PAM for the baseband and QAM for the frequency separated bands). In some embodiments, one baseband PAM transmitter is combined with one or more frequency separated QAM transmitters.
REFERENCES:
patent: 5822368 (1998-10-01), Wang
patent: 6259745 (2001-07-01), Chan
patent: 6859508 (2005-02-01), Koyama et al.
patent: 7292629 (2007-11-01), Zerbe et al.
patent: 2002/0039388 (2002-04-01), Smart et al.
Manickam Thulasinath G.
Raghavan Sreen A.
Sallaway Peter J.
Taylor Gerard E.
Entropic Communications Inc.
Greenhaus Bruce W.
Tran Khai
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