Invention Application
- Patent Title: TECHNIQUES FOR PEAK-TO-AVERAGE-POWER-RATIO REDUCTION IN A DISCRETE FOURIER TRANSFORM DOMAIN FOR WIRELESS WAVEFORMS
-
Application No.: US17514996Application Date: 2021-10-29
-
Publication No.: US20230133797A1Publication Date: 2023-05-04
- Inventor: Jing Jiang , Peter Gaal , John Edward Smee , Pushkar Bajirao Kulkarni , Hari Sankar , Sanghoon Kim , Seyong Park
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Main IPC: H04L27/26
- IPC: H04L27/26 ; H04W72/04

Abstract:
Methods, systems, and devices for wireless communications are described. In some systems, a transmitting device may perform a pre-distortion of a signal on a resource allocation for the signal and using discrete Fourier transform (DFT)-domain processing. For example, the transmitting device may perform a first frequency-domain (FD) to time-domain (TD) transform, which may be an example of an inverse DFT (IDFT), on a first set of FD symbols to obtain a first set of TD samples. A size of the first FD to TD transform may be based on the resource allocation for the signal. The transmitting device may perform a crest factor reduction (CFR) function on the first set of TD samples to pre-distort the signal in the TD (e.g., in the IDFT domain), which may enable the transmitting device to avoid out-of-band (OOB) emission or otherwise have greater control over where the pre-distortion contributes energy.
Public/Granted literature
Information query