Transceiver architecture for multiple antenna systems
US9661506B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2016 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | Aug 29, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A transceiver architecture with combined digital beamforming and analog/hybrid beamforming is proposed. Digital beamforming is used for beam training with reduced overhead (switching time). It is beneficial to estimate all UE's angle of arrival (AoA) at the same time. In addition, the pilot/training signals are transmitted in a narrow band to reduce complexity. Analog/hybrid beamforming is used for data transmission with high directive gain and low complexity. The value of beamforming weights (phase shifter values) in analog domain can be based on the estimation of AoA from beam training. By using digital beamforming for beam training, combined with analog/hybrid beamforming for data transmission, effective beamforming is achieved with reduced overhead, complexity, and cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.