Pulse or digital communications – Spread spectrum – Chirp
Reexamination Certificate
2006-09-19
2006-09-19
Burd, Kevin (Department: 2611)
Pulse or digital communications
Spread spectrum
Chirp
C375S150000, C375S152000, C375S302000, C375S322000
Reexamination Certificate
active
07110432
ABSTRACT:
Methods and systems for communication systems are disclosed. Chirp signals generated according to a chirp rate and carrier frequency are used for communication. The chirp rate can be determined by solving integrals or by simulation of transmission parameters. A chirp signal is transmitted from a base station and delayed versions of the chirp signals are created. The delayed versions are generated by the chirp signal reflecting off of reflectors. A receiving station receives an incoming signal. The incoming signal includes the LOS signal plus delayed versions, noise and/or interference. Unwanted signals, either LOS or delayed versions, noise and/or interference are removed from the incoming signal to obtain the desired chirp signal. Using the chirp rate, the chirp signal is converted to a corresponding digital signal.
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Aghdam Freshteh N
Brady W. James
Burd Kevin
Shaw Steven A.
Telecky , Jr. Frederick J.
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