Pseudo-random convolutional interleaving

Details Pseudo-random convolutional interleaving Pseudo-random convolutional interleaving

1983-11-30

1985-10-15

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

371 44, G06F 1110

Patent

active

045478872

ABSTRACT:
A method and apparatus for interleaving and deinterleaving psuedo-randomly a digital signal which is transmitted over a transmission channel is disclosed. A received bit stream is interleaved such that the order of the bits is varied in a non-random manner. The order of the interleaved bits is permutated in a pseudo-random manner and the bits are then transmitted over a transmission channel. The received bits are inverse permuted so as to return the order of the received bits to the order of the bits after the non-random interleaving step. The inverse permuted bits are then deinterleaved in the reverse order in which they were interleaved so as to reconstitute the original bit stream.

REFERENCES:
patent: 3508197 (1970-04-01), Tong
patent: 4291406 (1981-09-01), Bahl et al.
patent: 4394642 (1983-07-01), Currie et al.
patent: 4425644 (1984-01-01), Scholz
IEEE Transactions on Information Theory, vol. IT-16, No. 3, May 1970, John . Ramsey, "Realization of Optimum Interleavers".
IEEE Transactions on Communications Technology, vol. COM-19, No. 5, Oct. 1971, G. David Forney, Jr., "Burst-Correcting Codes for the Classic Bursty Channel".

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