Method and apparatus for recognizing digital information in digi

Details Method and apparatus for recognizing digital information in digi Method and apparatus for recognizing digital information in digi

1981-08-27

1984-04-10

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

371 36, H04L 122

Patent

active

044425317

ABSTRACT:
A method and apparatus are disclosed for recognizing digital information, particularly in an information transmission in mobile radio communications systems, in which a sampling pulse is derived from the received information at a whole multiple of the information clock frequency. A sampling pulse is placed into the respective area of an information element which has assumed its suspected, quasi-stationary state. A further, non-correlated sampling pulse is derived from the received information at a further whole multiple of the information clock frequency, the edges of which are placed at a corresponding number of sampling times within an extended sampling range of the pulse which represents the information element. Respective comparison of a first sampling result to one or more following sampling results is carried out for an information element and a majority decision is undertaken on the basis of the existing sampling results. All sampling modes are simultaneously effective and each information element gained is intermediately stored and respectively compared to each other information element during an intermediate storage phase. One of a plurality of information elements perceived as being error-free is relayed to an information sink at the end of the storage phase and the remaining stored information elements are erased.

REFERENCES:
patent: 3526837 (1970-09-01), Zegers et al.
patent: 3898571 (1975-08-01), Caprio

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