Near soft-output maximum-likelihood detection for multiple-input multiple-output systems
US8462867B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2007 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Oct 20, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0048
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methodologies are described that provide low-complexity soft-output detection for MIMO communication systems. Looping can be performed over a set of constellation points per spatial stream to obtain distance metrics for each of a series of transmitted streams, for which values for the other transmitted streams can be estimated using a MIMO channel matrix and a sub-optimal MIMO algorithm. Examples of MIMO algorithms that can be utilized include Per-Stream List Detection (PSLD), Lattice-Reduced Detection (LRD), and a Guided-M Algorithm. Performance can be further improved by pre-processing the MIMO channel matrix and/or by utilizing techniques for Enhanced Metric Usage (EMU).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.