Carrier recovery apparatus

Details Carrier recovery apparatus Carrier recovery apparatus

2007-10-02

2007-10-02

Ghayour, Mohammed (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S327000, C375S376000, C327S147000, C329S307000

Reexamination Certificate

active

10505926

ABSTRACT:
A carrier recovery apparatus capable of detecting a phase error of modulation signal by a simple calculation, reducing the circuit scale, and improving the frequency capture characteristic and phase jitter characteristic is presented. This carrier recovery apparatus comprises a symbol estimating unit for estimating the transmitted symbol, a phase error detector for generating a normalized phase error signal on the basis of the estimated symbol and reception signal, a loop filter for filtering the phase error, and a numerical control oscillator controlled by the loop filter.

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