Non-constant modulus codebook design
US10917150B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2018 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Dec 5, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0224
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
According to certain embodiments, a method for use in a wireless transmitter for simultaneously transmitting a plurality of wireless signals using a plurality of antenna elements comprises selecting a non-constant modulus (NCM) spatial precoder from a NCM codebook comprising a plurality of NCM spatial precoders. The plurality of the NCM spatial precoders are based on a unit-power beamforming vector optimized so that the wireless transmitter transmits up to the full power of each antenna element of the plurality of antenna elements while an overall transmitted power remains constant. The method further comprises applying the selected NCM spatial precoder to a data signal for generating a plurality of coded signals; and transmitting the plurality of coded signals as wireless signals via a power amplifier operating at full power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.