Estimating the ratio of traffic channel power to pilot power in a MIMO wireless communication system
US8411780B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2009 |
| Grant date | Apr 2, 2013 |
| Priority date | — |
| Expiry date | Oct 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0413
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for processing a received multi-stream (MIMO) signal, and in particular for estimating a per-code traffic-channel-to-pilot power ratio for the MIMO signal are disclosed. An exemplary method includes the calculation of an average symbol amplitude or average symbol power level from a plurality of de-spread traffic channel symbols received in a first transmission slot and the estimation of a corresponding pilot symbol amplitude or pilot symbol power level, based on an estimated propagation channel response and at least one of a plurality of precoding vectors used to generate the MIMO signal. A per-code traffic-channel-to-pilot power ratio for the first transmission slot is computed by dividing the average symbol amplitude or average symbol power level by the corresponding pilot symbol amplitude or pilot symbol power level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.