Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Patent
1998-04-22
2000-07-11
Pham, Chi H.
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
375262, 714794, 714796, H03D 100, H04L 2706
Patent
active
060884045
ABSTRACT:
A method for decoding a trellis encoded stream d.sub.k by the use of either an 8 state maximum likelihood response decoding mode through a Gaussian channel or a 16 state partial response decoding mode through a partial response channel is disclosed. In response to a mode selection signal FENA, after passing off the trellis encoded stream for the 8 state mode and removing the influence of a segment synchronization signal from the trellis encoded stream for the 16 state mode, all branch metrics with different values in parallel for either the 8 or the 16 state mode. After selecting a predetermined number of branch metrics required for each state among all the branch metrics of either the 8 or the 16 state mode determined based on the FENA and finding the predetermined number of candidate path metrics and determining a survivor metric and a determination vector thereof, a decoded symbol is determined by tracing back for a decoding depth in response to the FENA based on the determination vector of each state.
REFERENCES:
patent: 5717471 (1998-02-01), Stewart
patent: 5838729 (1998-11-01), Hu et al.
patent: 5841819 (1998-11-01), Hu et al.
Corrielus Jean B.
Daewoo Electronics Co. Ltd.
Pham Chi H.
LandOfFree
Method and apparatus for decoding trellis code data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for decoding trellis code data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for decoding trellis code data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-549704