Method and device for decoding a signal of multiple input/multiple output system
US7782971B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2005 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | May 10, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03203
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The method for decoding a received signal in a multiple input/multiple output system uses QR-decomposition of the linear channel matrix, but then applies a non-Euclidean norm during tree traversal. Two separate hardware units, namely an MCU and a MEU, art provided for concurrent operation. The MCU determines a next child node, while the MEU determines next best parent nodes on the previously processed tree levels, which makes it possible to retrace the path to a next starting node without investing dedicated processing steps (e.g., cycles). On each tree level, the possible coordinates are grouped into several circular sets in the complex plane, and a series of decision boundaries is calculated for each set that allows a quick evaluation of the optimum coordinate in each set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.