System and method for frequency burst detection for GSM/GPRS

Details System and method for frequency burst detection for GSM/GPRS System and method for frequency burst detection for GSM/GPRS

2007-08-07

2007-08-07

Ghayour, Mohammed (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S340000, C375S343000, C375S362000, C455S213000, C455S524000, C455S525000

Reexamination Certificate

active

10844766

ABSTRACT:
A system, method and computer program product for detecting a frequency burst in a received signal at a wireless receiver is disclosed. The invention predicts the current sample of the received signal by filtering the past samples of the received signal through an adaptive filter. A prediction error is further obtained by subtracting the actual current sample and the predicted current sample. The prediction error is then used to adapt the adaptive filter. Since the frequency burst is a substantially predictable signal, the adaptive filter adapts to accurately predict the samples of the frequency burst. Therefore, the prediction error decreases when the frequency burst is received at the receiver. The end of the frequency burst is identified using the prediction error at each discrete time instant.

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