Method and system for a delta quantizer for MIMO pre-coders with finite rate channel state information feedback
US7894506B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2007 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Oct 12, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0641
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Aspects of a method and system for a delta quantizer for MIMO pre-coders with finite rate channel state information feedback may include quantizing a change in channel state information in a MIMO pre-coding system onto a codebook, which comprises one or more unitary matrices, using a cost function. The codebook may be generated based on at least the channel state information. The channel state information may comprise a matrix V and the cost function f(A) may be defined by the following relationship:where A is a matrix of size N by N and aij is element (i,j) of matrix A. One or more unitary matrices may be generated from at least a first set of matrices and a second set of matrices, where the first set of matrices may comprise one or more Givens matrices. A dynamic range and a resolution of the codebook may be modified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.