Hochwald construction of unitary matrix codebooks via eigen coordinate transformations
US7630886B2 · kind B2 · utility
9Cited by
1References
28Claims
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Key dates
| Filing date | Apr 29, 2005 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Jun 19, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2626
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of deriving a codebook including deriving a first codeword Pl in Euclidean coordinates, transforming the first codeword into eigen-coordinates, applying a Hochwald construction to the first codeword in eigen-coordinates to derive a plurality of codewords in eigen-coordinates and transforming the plurality of codewords in eigen-coordinates into a plurality of codewords in Euclidean coordinates to form the codebook.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.