Apparatus and method for signal acquisition in a FSK...

Details Apparatus and method for signal acquisition in a FSK... Apparatus and method for signal acquisition in a FSK...

2006-04-25

2006-04-25

Pascal, Robert (Department: 2817)

Pulse or digital communications

Receivers

Angle modulation

C375S316000

Reexamination Certificate

active

07035352

ABSTRACT:
A signal detection circuit for receiving a digital baseband signal comprising an amplitude modulated symbol stream of Logic 0 symbols and Logic 1 symbols, each of the Logic 0 and Logic 1 symbols comprising S sequential samples, wherein the amplitude modulated symbol stream contains a preamble of N known symbols preceding a plurality of user data symbols. The signal detection circuit comprises: A) a signal mean determination circuit that receives G samples from the digital baseband signal and determines an amplitude mean value associated with the amplitude modulated symbol stream; and B) a correlation circuit that detects the preamble.

REFERENCES:
patent: 4694467 (1987-09-01), Mui
patent: 6058150 (2000-05-01), Ghosh

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