Device for making decisions by estimating the viterbi algorithm in a mobile radio system
US5864589A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 1995 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | May 15, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03178
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a mobile radio system including mobile terminals each terminal comprises, on the receiving side, a unit using the Viterbi algorithm for equalization or for decoding the received signals after demodulation. A decision device of this system calculates the mean and the standard deviation of the metrics of each branch of the Viterbi algorithm, determines a quality level of a transmission parameter corresponding to the results of this calculation and compares the estimated quality level and a required quality level of the parameter in order to produce a decision signal supplied to a decision unit which can modify one or more transmission characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.