Digital correlator

Details Digital correlator Digital correlator

1976-03-01

1977-06-28

Dildine, Jr., R. Stephen

Communications: electrical

Digital comparator systems

178 691, 3401462, 3401463WD, H03K 518

Patent

active

040328856

ABSTRACT:
A digital correlator which will detect a digital pattern in the presence of noise. In an n bit pseudo-noise (PN) sequence, comparison is made of the input word with m desired PN coded word patterns; a flag is raised when a pattern is detected and identified. In one embodiment all possible (six) PN code words are programmed in a ROM (Read Only Memory). The input word is compared with all six code words in a parallel sequential search mode. In another embodiment, comparison is made of a 31 bit input word with a programmed PN code word in a single parallel comparison.

REFERENCES:
galpin; R. J., Digital Synchronizer in IBM Tech. Disc. Bull. 15(1): pp. 83, June 1972.

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