System and method for precoding in a multiple-input multiple-output (MIMO) system
US7813458B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2005 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Dec 12, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0675
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A network entity in a multi-transmit antenna system, such as a transmitting or receiving entity, includes a component such as a pre-coder or a receiver, and is configured for full-spatial-rate coding data. The network entity is capable of providing a full-spatial-rate codebook having been designed by selecting an underlying partial-spatial-rate codebook designed for a system configured for partial-spatial-rate coding data. The full-spatial-rate codebook can then be designed in a manner including defining the full-spatial-rate codewords based upon partial-spatial-rate codewords of the partial-spatial rate codebook and basis vectors of a null space of the respective partial-spatial-rate codewords in a multidimensional vector space. The network entity can also be capable of selecting codewords of the codebook in accordance with a sub-space tracking method whereby the codewords of the codebook can be selected in a manner that exploits correlations therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.