公开(公告)号：US10187102B2

公开(公告)日：2019-01-22

申请号：US15897046

申请日：2018-02-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haizheng Tang ,  Xiaomin Zhou

IPC: H04W68/08 ,  H04B1/30 ,  H04W88/08 ,  H03D7/16 ,  H04B1/00

Abstract: Embodiments of the present disclosure disclose a radio remote unit, a receiver, and a base station. The radio remote unit includes at least one receive channel pair, a first local oscillator module, a second local oscillator module, a local oscillator switching switch, and a controller. Each receive channel pair includes a first receive channel and a second receive channel. Each receive channel in each receive channel pair includes a filtering module, a frequency mixing module connected to the filtering module, and a digital processing module connected to the frequency mixing module. A frequency mixing module on the second receive channel is connected to the first local oscillator module and the second local oscillator module by the local oscillator switching switch. The controller is configured to receive an operating mode that is sent by a base station, and control the local oscillator switching switch to perform switching.

公开(公告)号：US09794090B2

公开(公告)日：2017-10-17

申请号：US15398499

申请日：2017-01-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huan Xie ,  Xiaomin Zhou

IPC: H04L25/49 ,  H04L25/03 ,  H04B1/04

CPC classification number: H04L25/03343 ,  H04B2001/0425 ,  H04L25/03847 ,  H04L25/49

Abstract: Present application provides embodiments of a transmitter and an interference cancellation method. The transmitter includes: a first digital predistorter (DPD), a power amplifier (PA), and a first processor located on a feedback channel of the transmitter and separately connected to the PA and the first DPD. The first processor performs, according to a feedback cancellation signal, interference cancellation on a signal of the feedback channel, to acquire a first mixed signal, and sends the first mixed signal to the first DPD. The first DPD is configured to perform linear predistortion processing according to a first baseband signal on a first transmit channel and the first mixed signal, to generate a first predistortion signal. The PA is configured to amplify and then transmit a to-be-transmitted signal using an antenna. The to-be-transmitted signal is the first predistortion signal or a signal obtained according to the first predistortion signal.