Automatic frequency control receiver

Details Automatic frequency control receiver Automatic frequency control receiver

2006-03-21

2006-03-21

Appiah, Charles N. (Department: 2686)

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

C455S293000, C375S324000

Reexamination Certificate

active

07016652

ABSTRACT:
The invention relates to a receiver of signals [S] received from a wireless network, said receiver working at a so-called reference oscillation frequency controlled by a so-called reference value [Vref]. Said receiver includes demodulation means [DEMO] for demodulating the received signal [S], means [EST] of estimating a mean value [MV] of the demodulated signal [SD], means [COR] of correcting the mean value [MV] of the demodulated signal [SD] to the reference value [Vref], decision means [DEC] for determining the binary values adopted by the received signal [S]. According to the invention, the estimation means [EST] include first means [ESTA] of fast extraction of a first mean value [MVA] of the demodulated signal [SD] used in decision means [DEC] during a first time period and second means [ESTB] of slow extraction of a second mean value [MVB] of the demodulated signal [SD] used in correction means [COR] and, during a second time period, in decision means [DEC].

REFERENCES:
patent: 6947490 (2005-09-01), Edwards et al.
patent: 6950406 (2005-09-01), Chen et al.
patent: 6950483 (2005-09-01), Chiodini
patent: 6950626 (2005-09-01), Suenaga

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