Method and system for communication backward compatibility

Details Method and system for communication backward compatibility Method and system for communication backward compatibility

2008-01-29

2008-01-29

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Transceivers

Modems

C375S295000, C375S316000

Reexamination Certificate

active

10055197

ABSTRACT:
Communications method including the procedures of modulating a second generation carrier signal, with a first generation Baseband bandwidth signal, when transmitting to first generation devices, and, modulating the second generation carrier signal, with a second generation Baseband bandwidth signal, when transmitting to second generation devices, wherein the frequency of the second generation carrier signal, is an integer multiple of the first generation Baseband bandwidths, away from a first generation carrier signal frequency.

REFERENCES:
patent: 5987068 (1999-11-01), Cassia et al.
patent: 6011807 (2000-01-01), Castagna et al.
patent: 6298051 (2001-10-01), Odenwalder et al.
patent: 2002/0003835 (2002-01-01), Wu
patent: 2002/0015404 (2002-02-01), Fisher et al.
patent: 2002/0019966 (2002-02-01), Yagil et al.
patent: 2003/0156592 (2003-08-01), Ojard et al.
patent: 2003/0156656 (2003-08-01), Ojard et al.

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