Carrierless backwards compatible data neworking transmitter,...

Details Carrierless backwards compatible data neworking transmitter,... Carrierless backwards compatible data neworking transmitter,...

2006-06-27

2006-06-27

Corrielus, Jean B. (Department: 2637)

Pulse or digital communications

Transmitters

C375S259000, C375S219000, C370S317000, C370S320000

Reexamination Certificate

active

07068728

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: 5745839 (1998-04-01), Lieberman
patent: 5987068 (1999-11-01), Cassia et al.
patent: 6061555 (2000-05-01), Bultman et al.
patent: 6154659 (2000-11-01), Jalali et al.
patent: 6195563 (2001-02-01), Samuels
patent: 6639939 (2003-10-01), Naden et al.
patent: 2002/0181390 (2002-12-01), Mody et al.
patent: 2003/0139151 (2003-07-01), Lifshitz et al.

Affiliated with

Also associated with

Rating

Carrierless backwards compatible data neworking transmitter,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Carrierless backwards compatible data neworking transmitter,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carrierless backwards compatible data neworking transmitter,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3693379