Devices and methods for facilitating closed-loop transmission diversity in wireless communications systems
US9510218B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2014 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Mar 13, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/206
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Access terminals are adapted to facilitate closed-loop transmit diversity in wireless communications systems. According to one example, an access terminal can calculate an uplink error rate for even slot indexes and a separate uplink error rate for odd slot indexes in an uplink frame to be transmitted. A respective downlink error rate can be estimated for an in-phase (I) component and a quadrature-phase (Q) component of a downlink transmission. The access terminal may further estimate a phase-related weight that was applied to the downlink transmission based on the downlink error rates and the uplink error rates. Other aspects, embodiments, and features are also included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.