Method and apparatus for mixed analog/digital beamforming
US10056957B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2012 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Aug 10, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0025
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method provides mixed analog/digital beamforming by a transmitter in a mobile communication system. The method includes converting a modulation symbol into a parallel symbol stream, performing digital beamforming on the parallel symbol stream, performing an IFFT operation on the digital-beamformed parallel symbol stream to generate a time-domain symbol, converting the IFFT-operated time-domain symbol into a serial time-domain symbol, inserting a CP into the serial time-domain symbol, performing a DAC operation on the CP-inserted symbol to generate an analog signal, and performing analog beamforming by multiplying the analog signal by the analog beamforming precoder optimized for the first subcarrier transmitted through at least one RF channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.