Method and apparatus for improving data frame...

Details Method and apparatus for improving data frame... Method and apparatus for improving data frame...

2006-03-14

2006-03-14

Chin, Stephen (Department: 2634)

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

C375S240280, C375S354000, C370S509000

Reexamination Certificate

active

07012981

ABSTRACT:
A method of apparatus for achieving and maintaining alignment of a data receiver to data frames in the presence of noise is taught. A statistical weighting process is employed to sample synchronization symbols that reoccur in data frames. The information is used to maintain alignment to the data frames by tolerating a greater number of data errors. A plurality of synchronization symbols are decoded with a weighted probability of error in decoding determined for each. The weighted probabilities are combined and the resultant value is compared to a threshold value. If the threshold is met, then alignment is achieved or maintained based upon the statistical process. Improved performance in lower SNR environments is achieved.

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U.S. Appl. No. 09/295,660, filed Apr. 1999, West.

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