Apparatus for recovering carrier

Details Apparatus for recovering carrier Apparatus for recovering carrier

2007-06-12

2007-06-12

Kim, Kevin (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S327000, C375S373000, C455S204000

Reexamination Certificate

active

10683443

ABSTRACT:
An apparatus and method of detecting whether the carrier frequency is locked for confirming recovering carrier is normally performed is disclosed. The apparatus includes a lock detector for judging whether the carrier frequency is locked by extracting DC value form real number component and imaginary component of an OQAM signal, and comparing the accumulated DC value to set value.

REFERENCES:
patent: 6222891 (2001-04-01), Liu et al.
patent: 6389070 (2002-05-01), Cugnini et al.
patent: 6665355 (2003-12-01), Chen et al.
patent: 6671339 (2003-12-01), Ahn
patent: 6980609 (2005-12-01), Ahn
patent: 7016446 (2006-03-01), Spalink

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