US 12,273,224 B2
Controlling peak-to-average power ratio reduction
Roland Carlsson, Öjersjö (SE); and Aare Mällo, Gothenburg (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 18/553,498
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Mar. 31, 2021, PCT No. PCT/EP2021/058404
§ 371(c)(1), (2) Date Sep. 29, 2023,
PCT Pub. No. WO2022/207088, PCT Pub. Date Oct. 6, 2022.
Prior Publication US 2024/0364570 A1, Oct. 31, 2024
Int. Cl. H04B 7/0413 (2017.01); H04L 27/26 (2006.01)
CPC H04L 27/2623 (2013.01) [H04B 7/0413 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of controlling peak-to-average power ratio, PAPR, reduction for a multi-antenna transmitter, the method comprising:
determining a precoder setting for transmission of an orthogonal frequency division multiplexing, OFDM, signal by the multi-antenna transmitter to one or more receivers, wherein the precoder setting comprises a primary portion and a PAPR reduction portion, and wherein the OFDM signal comprises data parts and non-data parts, the non-data parts comprising reference parts; and
allocating, for at least some of the non-data parts, a first power to the PAPR reduction portion for sub-carriers conveying the non-data parts and allocating a second power to the PAPR reduction portion for other sub-carriers, wherein the first power per sub-carrier is lower than the second power per sub-carrier.