Signal processing apparatus, signal processing method, and program
US7991078B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2007 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Mar 27, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03184
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a signal processing apparatus adapted to process a signal transmitted via a transmission path, distortion of a waveform of a signal value of a specific symbol is predicted on the basis of a characteristic of distortion depending on values of symbols transmitted before the specific symbol, and the distortion is removed from the waveform of the received signal thereby producing a distortion-removed waveform. A comparison value is calculated for each allowable value of the specific symbol by subtracting a predicted signal value of the specific value from the distortion-removed waveform. A symbol value corresponding to the smallest comparison value is determined as the value of the specific symbol. An error suspicion level value indicating the degree of suspicion of being incorrect is calculated for each of the predetermined number of symbols, and already determined values of symbols are corrected in accordance with the error suspicion level values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.