Synchronization method in Viterbi decoder

Details Synchronization method in Viterbi decoder Synchronization method in Viterbi decoder

1997-08-22

1999-08-10

Bocure, Tesfaldet

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

371 374, H03D 100

Patent

active

059370165

ABSTRACT:
A synchronization method in Viterbi decoder is disclosed. The synchronization method performs a fast and an effective synchronization by depuncturing and Viterbi-decoding transmitted convolutional codes punctured in a predetermined puncturing pattern assuming that a code rate is 5/6, comparing the calculated CBER to a high/low threshold value, determining a code rate group to which the code rate of the convolutional codes belong, and performing a code rate detecting process, a phase synchronization and a pattern synchronization. Therefore, when performing the Viterbi decoding, a fast and more effective synchronization can be performed with improved efficiency.

REFERENCES:
patent: 5509020 (1996-04-01), Iwakiri et al.
patent: 5691992 (1997-11-01), Molnar et al.
patent: 5710783 (1998-01-01), Luthi et al.
patent: 5832001 (1998-11-01), Choi

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