Method and apparatus for frequency offset estimation, and...

Details Method and apparatus for frequency offset estimation, and... Method and apparatus for frequency offset estimation, and...

2006-05-16

2006-05-16

Burd, Kevin (Department: 2631)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

Reexamination Certificate

active

07046744

ABSTRACT:
A direct current (DC) offset estimation, frequency offset estimation, and compensation system (200), receives data packet (204) with preamble (206). A DC offset estimator (210) and a frequency offset estimator (212) operate concurrently to produce estimates of DC and frequency offsets of the data packet (204), which are determined from a portion of the preamble (206) as it is received. As the data packet (204) is received, a compensator (214) receives the estimates of DC and frequency offsets and compensates the remaining portion of the data packet (204) to produce a DC and frequency compensated data packet (218). Concurrent operation of the DC estimator (210) and the frequency offset estimator (212) advantageously allows more time to produce the estimates of DC and frequency offsets.

REFERENCES:
patent: 6104238 (2000-08-01), Mattisson et al.
patent: 6901121 (2005-05-01), Dubrovin et al.
patent: 6907235 (2005-06-01), Lisenbee
patent: 2001/0033601 (2001-10-01), Nafie et al.

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