Invention Grant
- Patent Title: Transmit precoding for peak to average power ratio reduction
-
Application No.: US17718950Application Date: 2022-04-12
-
Publication No.: US12294476B2Publication Date: 2025-05-06
- Inventor: Noam Zach , Guy Wolf , Gideon Shlomo Kutz
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Arent Fox, LLP
- Main IPC: H04L12/00
- IPC: H04L12/00 ; H04B7/06 ; H04L27/26

Abstract:
In a wireless communication system, a peak to average power ratio (PAPR) may affect the efficiency of a power amplifier. To reduce a PAPR, a transmitting device may utilize a PAPR reduction precoding that changes a received signal without performance impact so the overall transmit PAPR is reduced. The transmitting device constructs a frequency domain (FD) response to the PAPR reduction precoding, estimates a channel to one or more receiving devices, and applies the PAPR reduction precoding to the estimated channel. The transmitting device constructs a multiple input multiple output (MIMO) precoding matrix considering the FD response of the PAPR reduction precoding and applies the MIMO precoding matrix and the PAPR reduction precoding to an FD signal. A receiving device applies the FD response conjugated to a received FD signal from the transmitting device and processes at least a received reference signal based on the PAPR reduction precoder.
Public/Granted literature
- US20230327933A1 TRANSMIT PRECODING FOR PEAK TO AVERAGE POWER RATIO REDUCTION Public/Granted day:2023-10-12
Information query