Method of establishing an inverse pilot-sequence for deinterleav

Details Method of establishing an inverse pilot-sequence for deinterleav Method of establishing an inverse pilot-sequence for deinterleav

1992-04-27

1992-12-22

Beausoliel, Robert W.

Excavating

371 22, G06F 1100

Patent

active

051739020

ABSTRACT:
A method of establishing an inverse pilot sequence for deinterleaving as used in digital transmission, with the interleaving being performed by means of a transmit register and a pilot sequence. Each portion (2 5 1 4 3 6) of the inverse pilot sequence is obtained from the preceding portion (3 1 6 5 4 2) of the inverse pilot sequence and from the two corresponding portions (2 6 1 5 4 3, 4 1 3 6 5 2) of the pilot sequence, with the k-th element of the N-th portion of the inverse pilot sequence being determined by observing the rank of the k-th element in the (N-1)-th portion of the pilot sequence in the N-th portion of the pilot sequence, and then in selecting the element to be found at this rank in the (N-1)-th portion of the inverse pilot sequence.

REFERENCES:
patent: 3988538 (1976-10-01), Patten
patent: 4394642 (1983-07-01), Currie et al.
patent: 4547887 (1985-10-01), Mui
patent: 4723246 (1988-02-01), Weldon, Jr.
patent: 4901319 (1990-02-01), Ross
Clark and Cain: "Error Correcting Coding", 1981, Plenum Press, New York, pp. 349-352.

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