Convex reduction of amplitudes for OFDM MIMO with multiple carriers
US11218197B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2017 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Oct 5, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2615
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods are disclosed herein that related to Peak-to-Average Power Ratio (PAPR) reduction in a (e.g., massive) Multiple-Input Multiple-Output (MIMO) Orthogonal Division Multiplexing (OFDM) transmitter system. In some embodiments, a method of operation of a MIMO OFDM transmitter system comprises, for each carrier of two or more carriers, performing precoding of a plurality of frequency-domain input signals for the carrier to provide a plurality of frequency-domain precoded signals for the carrier, the plurality of frequency-domain input signals for the carrier being for a plurality of transmit layers for the carrier, respectively. The method further comprises processing the frequency-domain precoded signals for the two or more carriers in accordance with a multi-carrier Convex Reduction of Amplitudes (CRAM) processing scheme to provide a plurality of multi-carrier time-domain transmit signals for a plurality of antenna branches, respectively, of the MIMO OFDM transmitter system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.