公开(公告)号：US20240022463A1

公开(公告)日：2024-01-18

申请号：US18476059

申请日：2023-09-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhiqiang Zou ,  Yanan Gao ,  Xi Chen

IPC: H04L27/26

CPC classification number: H04L27/2623

Abstract: This application provides a signal processing method and a communication apparatus. The method includes: if it is detected that at least one signal feature of each carrier signal in a first combined signal changes, determining, based on the signal feature of each carrier signal, a first clipping noise power corresponding to each carrier signal; and performing clipping on each carrier signal based on the first clipping noise power corresponding to each carrier signal. The signal feature includes one or more of a power, a bandwidth, a frequency, a power spectral density, or a modulation scheme. According to this method, clipping processing is performed on each carrier signal, to reduce a PAPR in an OFDM system. In addition, when the signal feature of each carrier signal changes, an access network device may determine a clipping noise power of each carrier signal based on a changed signal feature of each carrier signal.

公开(公告)号：US20230308333A1

公开(公告)日：2023-09-28

申请号：US18325955

申请日：2023-05-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhiqiang Zou ,  Yanan Gao ,  Yaqi Wu

IPC: H04L27/26

CPC classification number: H04L27/2623

Abstract: PAPR suppression includes a first clipping module and a second clipping module. The second clipping module outputs, to the first clipping module, a to-be-clipped signal that satisfies an input condition of the first clipping module, where the input condition includes a peak distribution feature of an input signal. The first clipping module performs first clipping processing on the to-be-clipped signal to obtain a first clipped signal. PAPR suppression is performed based on collaboration between the two clipping modules.