Probabilistic fade forecasting

Details Probabilistic fade forecasting Probabilistic fade forecasting

1988-01-06

1989-05-30

Smith, Jerry

Excavating

371 40, G06F 1110

Patent

active

048357723

ABSTRACT:
A block of helically interleaved codewords is received in a de-interleaving array. A succession of codewords obtained from the de-interleaving array are decoded in a process in which each error pattern in a given codeword position provides a prediction of the presence or absence of an erasure in the adjacent codeword position of the next codeword. This prediction is obtained by addressing a look-up table with the error pattern. In one embodiment of the invention, the erasure prediction is computed recursively from previous erasure predictions using individual skepticism factors and forgetting factors for each codeword symbol position.

REFERENCES:
patent: 4291406 (1981-09-01), Bahl
patent: 4559625 (1985-12-01), Berlekamp
patent: 4683572 (1987-07-01), Baggen

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