公开(公告)号：US20130177097A1

公开(公告)日：2013-07-11

申请号：US13784182

申请日：2013-03-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bin Li ,  Yi Luo ,  Hui Shen ,  Hufei Zhu

IPC: H04B1/62

CPC classification number: H04B1/62 ,  H04B7/0434 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/086

Abstract: An interference alignment method, an interference alignment device, and a multi-channel communication system are provided. The method includes: obtaining channel matrix in a multi-channel communication system; determining a first desired signal and a second desired signal of the multi-channel communication system according to the channel matrix; obtaining precoding vectors and receive vectors, after a first receive signal is filtered by a receive vector corresponding to the first desired signal, a signal formed by superposing interference signals included therein has a feature of a lattice constellation pattern, and that at a receiver corresponding to the second desired signal, after a second receive signal is filtered by a receive vector corresponding to the second desired signal, interference signals included therein are canceled, where the first receive signal and the second receive signal are transmit signals sent to the corresponding receivers after precoding processing is performed at transmitters by using corresponding precoding vectors.

Abstract translation: 提供了干涉对准方法，干涉对准装置和多通道通信系统。 该方法包括：在多信道通信系统中获取信道矩阵; 根据信道矩阵确定多信道通信系统的第一期望信号和第二期望信号; 在第一接收信号被对应于第一期望信号的接收矢量滤波后，获得预编码矢量和接收矢量，通过叠加其中包含的干扰信号形成的信号具有网格星座图案的特征， 第二所需信号，在第二接收信号被对应于第二期望信号的接收矢量滤波后，其中包括的干扰信号被消除，其中第一接收信号和第二接收信号是在预编码后发送到对应的接收机的发送信号 通过使用相应的预编码向量在发射机处执行处理。

公开(公告)号：US09882581B2

公开(公告)日：2018-01-30

申请号：US15270911

申请日：2016-09-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiangming Kong ,  Hufei Zhu

IPC: H04B1/66 ,  H03M7/30 ,  H03M1/12

CPC classification number: H03M7/3062 ,  H03M1/1255 ,  H04B1/66

Abstract: The present invention relates to a compressive sensing-based signal processing method and apparatus. The method includes: determining distribution, of signal components of an input signal on which frequency mixing has been performed, in a baseband spectrum according to spectral distribution of the input signal; dividing the baseband spectrum according to different signal aliasing patterns formed by the distribution of the signal components, to form multiple frequency bands; determining lowest sampling frequency of the input signal according to the signal aliasing patterns in the frequency bands, and performing sampling on the input signal at sampling frequency greater than the lowest sampling frequency, to obtain a sampled signal; and separately restoring a corresponding signal component in each frequency band of the multiple frequency bands according to the sampled signal, and splicing the signal components restored in the frequency bands, to complete restoration of the input signal.

公开(公告)号：US09736776B2

公开(公告)日：2017-08-15

申请号：US15066939

申请日：2016-03-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hufei Zhu ,  Yunbo Li

IPC: H04W52/02 ,  H04B7/0452 ,  H04W88/02 ,  H04W88/08 ,  H04W52/46

CPC classification number: H04W52/0222 ,  H04B7/0452 ,  H04W52/0209 ,  H04W52/0212 ,  H04W52/0216 ,  H04W52/0235 ,  H04W52/46 ,  H04W88/02 ,  H04W88/08 ,  Y02D70/142

Abstract: A power save method, an AP device and an STA device are provided. According to whether power save is allowed in a current TXOP and whether a station STA is newly added in an operation object identifier of a subsequent frame of each frame of the current TXOP, the AP device respectively sets a TXOP power save indication of each frame, and when the TXOP power save indication of the current frame is power save allowed, the STA device determines whether to enter the Doze state according to a judgment result for a doze condition. The adoption of the method and the device can expand the power save application range, and enhance the power save effect.

公开(公告)号：US20170111082A1

公开(公告)日：2017-04-20

申请号：US15394354

申请日：2016-12-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hufei Zhu

IPC: H04B1/66 ,  H04B7/04

CPC classification number: H04B1/66 ,  H04B1/00 ,  H04B7/0456

Abstract: Embodiments provide a signal processing method, a transmitter, and a compressive sampling receiving device. The method includes: obtaining a periodic pseudo random sequence used when a compressive sampling receiving device performs frequency mixing. The method also includes selecting 2N information symbols from N radio signals; determining a precoding matrix D according to the periodic pseudo random sequence. The method also includes using the precoding matrix to perform precoding processing on the 2N information symbols to obtain 2N precoding results. The method also includes separately transmitting the 2N precoding results to the compressive sampling receiving device by using the 2N carriers.

公开(公告)号：US09344317B2

公开(公告)日：2016-05-17

申请号：US14944010

申请日：2015-11-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hufei Zhu ,  Ganghua Yang

IPC: H04K1/00 ,  H04L27/26

CPC classification number: H04L27/2646 ,  H03M7/3062 ,  H04L27/2634 ,  H04L27/2649

Abstract: An OFDM signal modulation method based on compressed sensing is provided, the method includes: acquiring a demodulation parameter of a receiver, where the demodulation parameter includes Tnyq of a periodic square signal of the receiver in sampling, Tnyq is a length of a minimum timeslot during which the periodic square signal maintains a high level or a low level; performing an OFDM modulation on an inputted information symbol to generate an OFDM baseband signal, and controlling a sampling interval TsampleOFDM=Ts/k of the OFDM baseband signal to be integral multiple of Tnyq, where Ts is a duration of valid data in the OFDM baseband signal, and k is the number of sub-carriers in the OFDM baseband signal; and up-converting the OFDM baseband signal and transmitting the processed signal to the receiver. Also provided are a demodulation method, device and system.

Abstract translation: 提供了一种基于压缩感测的OFDM信号调制方法，该方法包括：获取接收机的解调参数，其中解调参数包括采样中接收机的周期性平方信号的Tnyq，Tnyq是最小时隙的长度， 周期性方波信号保持高电平或低电平; 对输入的信息符号执行OFDM调制以产生OFDM基带信号，并且将OFDM基带信号的采样间隔TsampleOFDM = Ts / k控制为Tnyq的整数倍，其中Ts是OFDM基带中的有效数据的持续时间 信号，k是OFDM基带信号中的子载波的数量; 并对OFDM基带信号进行上变频，并将处理的信号发送到接收机。 还提供了一种解调方法，装置和系统。

公开(公告)号：US08798182B2

公开(公告)日：2014-08-05

申请号：US13912902

申请日：2013-06-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hui Shen ,  Bin Li ,  Yi Luo ,  Hufei Zhu

IPC: H04L27/28

CPC classification number: H04B7/0456 ,  H04B7/0413

Abstract: A precoding method and apparatus are disclosed. The corresponding method includes: constructing a Lagrange function according to a precoding matrix, transmit power, a receive filter matrix and a weighting matrix, and obtaining a Lagrange multiplier by using the Lagrange function; updating the precoding matrix according to the Lagrange multiplier to obtain an iterative precoding matrix and an iterative receive filter matrix; obtaining an iterative Lagrange multiplier according to the iterative precoding matrix, the transmit power, the iterative receive filter matrix and the weighting matrix, and repeating the above steps in an iterative manner of updating the iterative precoding matrix according to the iterative Lagrange multiplier till the iterative precoding matrix converges to a threshold; and precoding information to be transmitted according to the iterative precoding matrix converging to the threshold.

Abstract translation: 公开了一种预编码方法和装置。 相应的方法包括：根据预编码矩阵，发射功率，接收滤波器矩阵和加权矩阵构建拉格朗日函数，并通过使用拉格朗日函数获得拉格朗日乘数; 根据拉格朗日乘数更新预编码矩阵以获得迭代预编码矩阵和迭代接收滤波器矩阵; 根据迭代预编码矩阵，发射功率，迭代接收滤波器矩阵和加权矩阵获得迭代拉格朗日乘数，并以迭代方式重复上述步骤，根据迭代拉格朗日乘数更新迭代预编码矩阵，直到迭代 预编码矩阵收敛到阈值; 以及根据收敛到阈值的迭代预编码矩阵来发送的预编码信息。

公开(公告)号：US20140079046A1

公开(公告)日：2014-03-20

申请号：US14086718

申请日：2013-11-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xun Yang ,  Yunbo Li ,  Tianyu Wu ,  Hufei Zhu

IPC: H04W74/08

CPC classification number: H04W74/0825

Abstract: An apparatus, method, and system to provide a backoff method and device used for a lower priority access category AC. The method includes: when the lower priority AC and another AC in a same station STA obtain a transmission opportunity TXOP at the same time and an internal collision occurs, detecting a TXOP sharing state of the lower priority AC; and executing backoff of the lower priority AC according to the detected TXOP sharing state.

Abstract translation: 一种用于提供用于较低优先权访问类别AC的退避方法和装置的装置，方法和系统。 该方法包括：当同一站STA中的较低优先级AC和另一AC同时获得发送机会TXOP并发生内部冲突时，检测低优先级AC的TXOP共享状态; 并根据检测到的TXOP共享状态执行低优先级AC的退避。