Adaptive transmit beamforming for frequency division duplexing systems
US9537684B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2012 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Feb 4, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/1607
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Embodiments of a method and apparatus for performing an adaptive transmission scheme in a frequency division duplexing communication system based on channel state information estimated using an open-loop mode are described herein. In one example, the method includes estimating an impulse response of a channel using a signal received over a first frequency band of the channel from a device, transforming the impulse response into a frequency response of the channel, and subsequently performing the adaptive transmission scheme using the frequency response to transmit a signal to the device over a second frequency band of the channel that is different from the first frequency band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.