Forward error correcting transmitter and receiver

Details Forward error correcting transmitter and receiver Forward error correcting transmitter and receiver

1994-01-19

1996-07-09

Voeltz, Emanuel T.

Excavating

370107, G06F 1100

Patent

active

055352200

ABSTRACT:
A forward error correcting transmitter and receiver for preventing the erroneous detection of synchronization is provided in a system in which synchronization of an interleaver circuit and a deinterleaver circuit, to be inserted between a convolutional encoder and a Viterbi decoder, is obtained from a synchronization detecting circuit of the Viterbi decoder. A LFSR (Linear Feedback Shift Register) is used as a row-direction address counter during writing and an up/down counter is used as a column-direction address counter during reading, during the interleaver circuit. In the deinterleaver circuit, an up/down counter is used as the column-direction address counter during writing, and an LFSR is used as the row-direction address counter during reading.

REFERENCES:
patent: 5042033 (1991-08-01), Costa
patent: 5239623 (1993-08-01), Sato et al.
patent: 5285458 (1994-02-01), Yoshida
patent: 5309450 (1994-05-01), Kim
patent: 5313464 (1994-05-01), Reiff
patent: 5384782 (1995-01-01), Elms
Electronics Letters, vol. 25, No. 22, Oct. 26, 1989, E. Dunscombe/F. C. Piper, "Optimal Interleaving Scheme for Convolutional Coding", pp. 1517, 1518.
Milcom '89, 1989 IEEE Military Communications Conference Oct. 15-18, 1989 Boston, Mass., "A New Pseudo-Random Interleaving for Antijamming Applications", M. M. Darmon/P. R. Sadot, pp. 6, 7, 9.

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