- 专利标题: TECHNIQUES FOR PEAK-TO-AVERAGE-POWER-RATIO REDUCTION IN A DISCRETE FOURIER TRANSFORM DOMAIN FOR WIRELESS WAVEFORMS
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申请号: US17514996申请日: 2021-10-29
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公开(公告)号: US20230133797A1公开(公告)日: 2023-05-04
- 发明人: Jing Jiang , Peter Gaal , John Edward Smee , Pushkar Bajirao Kulkarni , Hari Sankar , Sanghoon Kim , Seyong Park
- 申请人: QUALCOMM Incorporated
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: US CA San Diego
- 主分类号: H04L27/26
- IPC分类号: H04L27/26 ; H04W72/04
摘要:
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.
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