Detection of frequency correction bursts and the like

Details Detection of frequency correction bursts and the like Detection of frequency correction bursts and the like

2008-03-05

2011-12-13

Payne, David C. (Department: 2611)

Pulse or digital communications

Synchronizers

Self-synchronizing signal

C370S252000, C370S431000

Reexamination Certificate

active

08077820

ABSTRACT:
In one embodiment, a frequency correction (FC) burst is detected in a complex signal received by a mobile station of a GSM/EDGE wireless communications network by applying the complex signal to one or more correlation paths of a burst detector within the mobile station. Each correlation path generates a correlation signal by multiplying a copy of the complex signal by the complex conjugate of a delayed version of the complex signal and then applies a correlation filter to the correlation signal. A combined correlation signal is formed by combining the filtered correlation signals from the one or more correlation paths. Peak detection is applied to the combined correlation signal, where a detected peak corresponds to the occurrence of the burst in the complex input signal. The correlation filters are designed such that the peak in the combined correlation signal occurs prior to the end of the burst.

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