Spherical decoder for wireless communications
US7822150B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2003 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Jul 24, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03414
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A decoding scheme for determining the information within a coded transmission includes a spherical decoder candidate search that reduces the number of candidate symbol combinations from a much larger number of possibly transmitted combinations. In one example, the spherical decoder uses an upper triangular matrix representation of the channel matrix as part of a recursive, cumulative cost function that provides the results of the candidate search. The candidate search includes considering symbols in a hierarchy or tree structure that represents the possibly transmitted combinations. The cost function incrementally accumulates a cost of a possible combination as the search progresses through the hierarchy. As soon as a symbol is determined to not be a valid candidate, all possible combinations including that symbol are discarded without considering them, directly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.