Near soft-output maximum likelihood detection for multiple-input multiple-output systems using reduced list detection
US8532202B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2008 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Nov 20, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03426
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for generating soft-decision output values for a set of transmitted spatial streams in a multiple-input multiple-output (MIMO) communication system are described. The apparatus includes a processor and memory with executable instructions. A plurality of constellation points for respective transmitted spatial streams are looped over to estimate values for other transmitted streams based at least in part on Reduced List Detection (RLD). The plurality of constellation points is a subset of all possible constellation points determined around a spatial stream where more constellation points are assigned to spatial streams with a weaker signal strength than for spatial streams with a stronger signal strength. A set of distance metrics as values of the plurality of constellation points for the respective transmitted spatial streams are determined. Soft-decision outputs for the respective transmitted streams based at least in part on the set of distance metrics are generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.