Pulse or digital communications – Synchronizers – Synchronizing the sampling time of digital data
Reexamination Certificate
2007-07-10
2007-07-10
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Synchronizers
Synchronizing the sampling time of digital data
C375S356000, C375S357000, C375S358000, C375S230000, C370S419000, C370S317000
Reexamination Certificate
active
10077653
ABSTRACT:
New version packet data devices support a backwards-compatible signal format. New version devices operate within a first frequency band while old version devices operate within a second frequency band. The first frequency band differs from but overlaps with the second frequency band. The new version devices may operate on a first carrier frequency (within the first frequency band) while old version devices may operate at a second carrier frequency (within the second frequency band). The new version devices and/or the old version devices may also support carrier-less modulations. Preamble, header, and trailer portions of a new version signal include a plurality of spectral copies of a baseband modulated signal. One or more of these spectral copies of the baseband modulated signal is/are indistinguishable from corresponding components of an old version signal. The payload of the new version signal may be formed in the same manner or may be formed in have a wider bandwidth, higher data rate format.
REFERENCES:
patent: 4291409 (1981-09-01), Weinberg et al.
patent: 5299192 (1994-03-01), Guo et al.
patent: 5745839 (1998-04-01), Lieberman
patent: 6442214 (2002-08-01), Boleskei et al.
patent: 6449262 (2002-09-01), Hwang et al.
patent: 6456602 (2002-09-01), Hwang et al.
patent: 6603822 (2003-08-01), Brede et al.
patent: 6934246 (2005-08-01), Park
patent: 6973074 (2005-12-01), Maranhao
patent: 6980601 (2005-12-01), Jones
patent: 6985432 (2006-01-01), Hadad
patent: 2001/0012319 (2001-08-01), Foley
patent: 2003/0086515 (2003-05-01), Trans et al.
patent: 1 126 688 (2001-08-01), None
Sabel L.P., et al; “Using the High Order Nyquist Zones in the Design of Efficient Multi-Channel Digital Upconverters”; 1997 IEEE;Institute for Telecommunications Research Univ.South Australia; Communication Systems & Signal Processing Institute, San Diego State University.
Ojard Eric
Trachewsky Jason
Broadcom Corporation
Garlick Bruce E.
Garlick & Harrison & Markison
Ghayour Mohammed
Ghulamali Qutub
LandOfFree
Carrier based backwards compatible data networking... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Carrier based backwards compatible data networking..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carrier based backwards compatible data networking... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3733985