Fast pattern correlator and method

Details Fast pattern correlator and method Fast pattern correlator and method

1991-10-02

1993-08-24

Malzahn, David H.

Boots, shoes, and leggings

36471511, G06F 15336

Patent

active

052394972

ABSTRACT:
A fast pattern correlator and method comprising received bitstream data blocks split into estimation blocks and correlation blocks. Correlation blocks are extracted and compared to an expected pattern using a correlation part starting location estimator and correlator. The number of bit errors resulting is compared to a predetermined maximum in a threshold comparator. Extracting the correlation blocks includes indexing consecutive estimation blocks using an estimation part correlation table and predicting consistent correlation block starting locations. The correlation blocks are correlated with the expected pattern to produce an exclusive-OR result, which, used with a bit-error table, can be used to find a number of bit errors in the correlation.

REFERENCES:
patent: 4734676 (1988-03-01), Huon et al.
patent: 4829462 (1989-05-01), Freeman et al.
patent: 4847877 (1989-07-01), Besseyre
patent: 5016206 (1991-05-01), Shinonaga
patent: 5122778 (1992-06-01), Erhart et al.

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