公开(公告)号：US09762376B2

公开(公告)日：2017-09-12

申请号：US15203538

申请日：2016-07-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mengda Mao ,  Siqing Ye ,  Qian Yin ,  Tao Pu

IPC: H04B1/04 ,  H04L5/14 ,  H04B1/525 ,  H04L27/26 ,  H04L27/36

CPC classification number: H04L5/1461 ,  H04B1/0475 ,  H04B1/525 ,  H04L27/2626 ,  H04L27/2647 ,  H04L27/368

Abstract: A method, an apparatus, and a transceiver for cancelling multi-carrier transmission interference are provided. The method includes: collecting a high order intermodulation signal in radio frequency signals output by a transmitter; processing the high order intermodulation signal so as to generate a first digital signal; establishing a high order intermodulation model by using the first digital signal and a first baseband signal output by the transmitter; generating a second digital signal by using a coefficient of the high order intermodulation model and a second baseband signal output by the transmitter; and counteracting interference in a digital signal output by a receiver with the second digital signal. By using the embodiments of the embodiments of the invention, high order intermodulation interference of a multi-carrier transmitter on a receiver can be effectively canceled, and therefore, difficulty in duplexer design and requirements on a suppression degree are reduced.

公开(公告)号：US10742240B2

公开(公告)日：2020-08-11

申请号：US16521598

申请日：2019-07-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qian Yin ,  Yuxiang Xiao ,  Erni Zhu

IPC: H04B1/00 ,  H04B1/04

Abstract: A signal processing method and device are used to obtain multi-band signals that enable a dual-input power amplifier to achieve high working performance during amplification. The device can decompose and combine analog radio frequency signals of at least two frequency bands by using an analog signal decomposition apparatus and a combination apparatus, to obtain two paths of multi-band signals whose spectra include the at least two frequency bands. The two paths of signals satisfy nonlinearity of the dual-input power amplifier. Therefore, after the two paths of signals are input into the dual-input power amplifier, the dual-input power amplifier can achieve optimal working performance.

公开(公告)号：US10218389B2

公开(公告)日：2019-02-26

申请号：US15857650

申请日：2017-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei Huang ,  Xiang Feng ,  Qian Yin

IPC: H04B1/00 ,  H04B1/04 ,  H01Q5/30 ,  H04B1/403

Abstract: Embodiments of the present invention provide a transmitter. The transmitter includes: a dual-band input circuit including at least two band input ends, performing DPD processing on an input baseband signal, and outputting the baseband signal; a modulo circuit, performing modulo processing on the input baseband signal, and outputting the baseband signal; a signal decomposition circuit, receiving the baseband signal input by the dual-band input circuit and a baseband signal modulus value input by the modulo circuit, and performing decomposition to obtain multiple decomposed signals; a modulation circuit, receiving the multiple decomposed signals, performing processing, modulating two signals obtained after processing to corresponding working frequencies, and outputting the two signals to a dual-band power amplifier. In comparison with a single-input dual-band power amplifier, when a dual-input dual-band power amplifier transmits signals in two bands concurrently, overall transmission efficiency of a dual-band transmitter can be obviously improved.

公开(公告)号：US09544125B2

公开(公告)日：2017-01-10

申请号：US14336709

申请日：2014-07-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mengda Mao ,  Siqing Ye ,  Qian Yin ,  Tao Pu

IPC: H04L5/14 ,  H04B1/525 ,  H04W28/04

CPC classification number: H04L5/1461 ,  H04B1/525 ,  H04W28/04

Abstract: An interference cancellation method and apparatus and also a filter are disclosed to cancel the interfering signals leaked to the receiving channel, and enable the receiving channel to suppress the transmitted signal. The method includes: dividing a transmitted signal into a first transmitted signal and a second transmitted signal, and then inputting the first transmitted signal into a first transmitting filter and inputting the second transmitted signal into a second transmitting filter symmetric to the first transmitting filter; adjusting the first interfering signal and the second interfering signal to make opposite phases of the signals; and combining the signals of opposite phases. The method provided herein can cancel the interfering signals leaked to the receiving channel, the receiving channel suppresses the transmitted signal effectively, and the interference caused by the transmitted signal onto the received signal is cancelled.

Abstract translation: 公开了一种干扰消除方法和装置以及滤波器来消除泄漏到接收信道的干扰信号，并且使接收信道能够抑制所发送的信号。 该方法包括：将发送的信号划分为第一发送信号和第二发送信号，然后将第一发送信号输入到第一发送滤波器，并将第二发送信号输入到与第一发送滤波器对称的第二发送滤波器; 调整第一干扰信号和第二干扰信号以使信号相反; 并组合相位相反的信号。 本文提供的方法可以消除泄漏到接收信道的干扰信号，接收信道有效地抑制发射信号，并且消除由发射信号对接收信号造成的干扰。

公开(公告)号：US09432173B2

公开(公告)日：2016-08-30

申请号：US14337854

申请日：2014-07-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mengda Mao ,  Siqing Ye ,  Qian Yin ,  Tao Pu

IPC: H04L5/14 ,  H04B1/04 ,  H04B1/525 ,  H04L27/26 ,  H04L27/36

CPC classification number: H04L5/1461 ,  H04B1/0475 ,  H04B1/525 ,  H04L27/2626 ,  H04L27/2647 ,  H04L27/368

Abstract: A method, an apparatus, and a transceiver for cancelling multi-carrier transmission interference are provided. The method includes: collecting a high order intermodulation signal in radio frequency signals output by a transmitter; processing the high order intermodulation signal so as to generate a first digital signal; establishing a high order intermodulation model by using the first digital signal and a first baseband signal output by the transmitter; generating a second digital signal by using a coefficient of the high order intermodulation model and a second baseband signal output by the transmitter; and counteracting interference in a digital signal output by a receiver with the second digital signal. By using the present invention, high order intermodulation interference of a multi-carrier transmitter on a receiver can be effectively canceled, and therefore, difficulty in duplexer design and requirements on a suppression degree are reduced.

Abstract translation: 提供了一种用于消除多载波传输干扰的方法，装置和收发器。 该方法包括：在发射机输出的射频信号中收集高阶互调信号; 处理高阶互调信号以产生第一数字信号; 通过使用第一数字信号和由发射机输出的第一基带信号建立高阶互调模型; 通过使用高阶互调模型的系数和由发射机输出的第二基带信号来产生第二数字信号; 并且利用第二数字信号抵消由接收机输出的数字信号的干扰。 通过使用本发明，可以有效地消除多载波发射机对接收机的高阶互调干扰，因此降低了双工器设计的难度和抑制度的要求。