Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2007-01-30
2007-01-30
Ha, Dac (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S340000
Reexamination Certificate
active
10103325
ABSTRACT:
A method and apparatus for accurately detecting the presence of a valid signal includes processing that begins by determining the energy level of an input signal in real time to produce a real time energy level. The processing then continues by delaying the input by a period of the valid signal to produce a delayed input. The processing then continues by correlating the input with the delayed input to produce a correlated input. The processing continues by determining the energy of the correlated input to produce a correlated energy level. The processing then continues by comparing the correlated energy level with the real time energy level to produce a probability that the input is a valid signal. The processing then continues by generating a valid signal probability indication based on the probability that the input is a valid signal.
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Ha Dac
Joseph Jaison
VIXS Systems, Inc.
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