Methods, apparatus, and systems employing soft decision decoding
US6862552B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2003 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Mar 15, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2647
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An easily implementable soft decision decoding (SDD) metric is provided for telecommunications systems and apparatus. The SDD metric is based on weighted average distances or weighted minimum distances between scaled received signals and all reference signals related to the corresponding binary symbol. An important property of the SDD metric of the invention is that the distance weight is completely defined by the received signal scaling factor which is readily available as a result of conventional frequency domain equalization procedures. The invention is particularly advantageous in wireless systems having variable parameters such as wireless OFDM systems with selective fading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.