Device for synchronizing branches of a Viterbi decoder included

Details Device for synchronizing branches of a Viterbi decoder included Device for synchronizing branches of a Viterbi decoder included

1995-09-20

1998-05-26

Baker, Stephen M.

Excavating

H03M 1312

Patent

active

057578346

ABSTRACT:
A branch synchronization device for multidimensional trellis coded digital data receivers using convolutional encoders includes a Viterbi decoder receiving two streams of symbols and supplying coded sequences and a time shifter for time shifting the symbol streams fed to the Viterbi decoder. The time shifter is controlled by a branch synchronization decision device generating a time shift control signal. The branch synchronization decision device cooperates with a calculator circuit receiving the coded sequences and supplying to the synchronization decision device an output signal of a first type if the coded sequences correspond to sequences such as would be obtained directly from the convolutional encoder and supplying an output signal of a second type if the coded sequences do not correspond to sequences that could have been obtained from the convolutional encoder. This output signal is fed to the branch synchronization device.

REFERENCES:
patent: 3789359 (1974-01-01), Clark, Jr., et al.
patent: 3806647 (1974-04-01), Dohne et al.
patent: 3872432 (1975-03-01), Bismarck
patent: 4918446 (1990-04-01), Yagi
patent: 5428646 (1995-06-01), Eyuboglu
de Mateo, "Node Synchronization Technique for Any 1
Rate Convolutional Code", IEEE International Communications Conference, Jun. 1991, pp. 1681-1687.
Sodha et al., "Node Synchronization for High Rate Convolutional Codes", Electronics Letters, vol. 28, No. 9, Apr. 23, 1992, pp. 810-812.
Berrou et al., "Pseudo-Syndrome Method for Supervising Viterbi decoders at any Coding Rate", Electronics Letters, vol. 30, No.13, Jun. 23, 1994, pp. 1036-1037.
IEEE International Conference on Communications ICC 1988, Philadelphia, US Jun. 12-15, 1988, vol. 1, 12 Jun. 1988, IEEE, New York, US, pp. 80-84; M.D. Rauchwerk, "A Technique for Multidimensional Symbol and Multiplexing Frame Synchronization in Multidimensional Trellis Coded Modems using Non-Standard Baud".
IEEE Global Telecommunications Conference & Exhibition, San Diego, US, Dec. 2-5, 1990, vol. 1, 2 Dec. 1990, IEEE,NY, US, pp. 604-608, M. Moeneclaey et al, "Syndrome-based Viterbi Decoder Node Synchronization and Out-of-Lock Detection".
Electronics Letters, vol. 30, No. 13, 23 Jun. 1994, London GB, pp. 1036-1037, C. Berrou et al, "Pseudo-syndrome method for supervising Viterbi decoders at any coding rate".
IEEE Transactions on Communications, vol. COM-32, No. 5, May 1984, NY US, pp. 524-531, G. Lorden et al, "Node Synchronization for the Viterbi Decoder".

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