Dynamic switching of carrier tracking loops without loss of...

Details Dynamic switching of carrier tracking loops without loss of... Dynamic switching of carrier tracking loops without loss of...

2011-03-22

2011-03-22

Tse, Young T. (Department: 2611)

Pulse or digital communications

Spread spectrum

Frequency hopping

C375S326000, C375S344000

Reexamination Certificate

active

07912111

ABSTRACT:
A method of dynamic switching of a plurality of carrier loops in a radio receiver. The method comprises: (A) receiving a radio signal from a radio source by using a carrier tracking loop; (B) substantially continuously estimating a signal-to-noise ratio (SNR) of the received radio signal from the radio source; (C) if the signal-to-noise ratio (SNR) of the received radio signal from the radio source is above an initial predetermined threshold, performing carrier tracking of the received carrier signal by an initial carrier tracking loop having an initial accumulation period; and (D) if the signal-to-noise ratio (SNR) of the received radio signal from the radio source falls below the initial predetermined threshold; switching from the initial carrier tracking loop having the initial accumulation period to a subsequent carrier tracking loop having a subsequent accumulation period.

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