Precoding weight generation method, mobile station apparatus and base station apparatus
US8842763B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2011 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Jan 20, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
To increase a data rate (spectral efficiency) of the entire system also in the case of dynamically switching between SU-MIMO transmission and MU-MIMO transmission, it is a feature that a mobile station apparatus (10) selects a PMI associated with a precoding matrix including matrix elements corresponding to a stream that most approximates a channel matrix indicative of a channel state in a channel transmission path to transmit to a base station apparatus (20) as feedback, and that the base station apparatus (20) extracts the matrix elements corresponding to the stream that most approximates the channel state in the channel transmission path from the precoding matrix associated with the PMI transmitted from the mobile station apparatus (10) as feedback, and based on the extracted matrix elements, generates precoding weights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.