Viterbi decoding device and method for processing multi-data input into multi-data output
US7185269B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2003 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | May 19, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/6502
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a Viterbi decoder, a branch metric calculating operation of a series of received input data is performed according to different sets of target levels to realize a plurality of branch metric values, wherein said target level sets are not identical. Accumulative operations of the branch metric values are performed, respectively, and the plurality of accumulated values are compared in groups. A plurality of control signals and a plurality of least accumulated values are outputted according comparing results of the accumulated values. The least accumulated values are received and stored, and then fed back for next accumulation operations. A plurality of possible output-data state transition tracks are recoded in response to the control signals. The output data are determined according to the least accumulated values and output-data state transition tracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.