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1. 发明申请

US20190253089A1 METHOD AND APPARATUS FOR INTERFERENCE CANCELLATION IN FULL-DUPLEX MULTI-CELL NETWORKS 审中-公开
公开(公告)号：US20190253089A1
公开(公告)日：2019-08-15
申请号：US16393478
申请日：2019-04-24
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Huan WU , Eddy Shi-Ning HUM , Wan Yi SHIU
IPC分类号： H04B1/10 , H04J13/00 , H04B1/56 , H04L25/02 , H04J11/00 , H04B1/04 , H04L5/14
CPC分类号： H04B1/1027 , H04B1/0475 , H04B1/525 , H04B1/56 , H04B2001/1045 , H04J11/0023 , H04J13/0062 , H04L5/143 , H04L25/0204 , H04L25/0212 , H04L25/0224 , H04L25/0244
摘要： Techniques and architectures for multi-stage cancellation of self-interference (SI) and joint cancellation of mutual-interference (MI) and residual SI in signals received by devices of a full-duplex multi-cell network are disclosed. In various examples, channel estimations and interference cancellation operations are performed utilizing multiple orthogonal training signals transmitted by network devices during a common over-the-air training period. Training signals derived from the orthogonal training signals during transmission are utilized to generate SI estimation information and perform at least a first SI cancellation operation on a received signal that includes at least first and second orthogonal training signals. The received signal and orthogonal training signals are then used to estimate a MI channel impulse response and a (residual) SI channel impulse response for use in joint MI/SI cancellation operations on further received signals. Details regarding the design of the orthogonal training signals and a unique system-level delay calibration procedure are also provided.

2. 发明申请

US20190238368A1 COMPUTING TRANSMIT AND RECEIVE FILTERS FOR A NETWORK DEVICE 审中-公开
公开(公告)号：US20190238368A1
公开(公告)日：2019-08-01
申请号：US16378411
申请日：2019-04-08
申请人： Cisco Technology, Inc.
发明人： Mithat C. DOGAN , Brian D. HART , Jiunming HUANG , Matthew A. SILVERMAN
IPC分类号： H04L25/02 , H04L25/03 , H04B7/0413
CPC分类号： H04L25/0246 , H04B7/0413 , H04L25/0204 , H04L25/0244 , H04L25/03159 , H04W84/12 , H04W88/12
摘要： The embodiments herein use a factorization based technique for determining filter coefficients for a subset of the subcarriers in a wireless frequency band. Once the filter coefficients for the subset of the subcarriers are calculated, the network device uses these filter coefficients to identify the filter coefficients in a neighboring subcarrier. To do so, the network device uses pseudo-inverse iteration to convert the already calculated filter coefficients into filter coefficients for a neighboring subcarrier. The network device can repeat this process for the next set of neighboring subcarriers until all the filter coefficients have been calculated.

3. 发明申请

US20180375689A1 A SUCCESSIVE JOINT CHANNEL ESTIMATION BASED INTERFERENCE CANCELLATION SCHEME AGAINST COLLIDING INTERFERENCES 审中-公开
公开(公告)号：US20180375689A1
公开(公告)日：2018-12-27
申请号：US15775161
申请日：2015-12-18
申请人： Intel IP Corporation
发明人： Zhibin Yu , Qing Xu
IPC分类号： H04L25/02
CPC分类号： H04L25/0204 , H04L25/0228 , H04L25/0244
摘要： A network device generates a successive joint channel estimation based on interference cancellation processes to eliminate or reduce colliding interferences (colliders) at a receiver end. A selection component selects a strongest interference collider from among pseudo noise sequences operating as colliders. A 2 by 2 matrix successive joint channel estimation component performs a successive 2 by 2 matrix joint channel estimation with an initial correlation metric between the strongest interference collider and each remaining interference collider in a first iteration of a set of iterations. A correlation metric component generates an updated correlation metric vector based on the 2 by 2 matrix joint channel estimation. Another 2 by 2 matrix joint channel estimation is then performed with the updated correlation metric vector between a next strongest interference collider and remaining interference colliders of the plurality of interference colliders at a second iteration of the set of iterations.

4. 发明授权

US08908813B2 Coefficient calculation method and device for time-domain channel estimation filter 有权
标题翻译：用于时域信道估计滤波器的系数计算方法和装置
公开(公告)号：US08908813B2
公开(公告)日：2014-12-09
申请号：US13977375
申请日：2011-12-30
申请人： Bai Cheng Xu
发明人： Bai Cheng Xu
IPC分类号： H04L27/06 , H04L25/02 , H04L27/26
CPC分类号： H04L27/2663 , H04L25/0212 , H04L25/0232 , H04L25/0244 , H04L25/0256
摘要： The present invention provides a method and a device for calculating a coefficient of a time-domain channel estimation filter. The method comprises: acquiring position information and weight information of symbols carrying RS information corresponding to X1, X2 . . . XP; acquiring position information and weight information of symbols carrying RS information relating to Y1, Y2, . . . YQ; calculating an autocorrelation matrix of a vector I in accordance with the position information and the weight information, wherein I=[X1, X2, . . . XP, Y1, Y2, . . . YQ]; calculating a crosscorrelation matrix of a vector O and the vector I in accordance with the position information and the weight information, wherein O=[Y0], and Y0 is a time-domain channel ideal value of the symbol on which the channel estimation is currently performed; and calculating an inverse matrix product of the crosscorrelation matrix and the autocorrelation matrix, thereby obtaining a coefficient vector corresponding to the symbol on which the channel estimation is currently performed. According to the present invention, it is able to calculate an optimal filter coefficient.
摘要翻译：本发明提供了一种用于计算时域信道估计滤波器的系数的方法和装置。该方法包括：获取携带对应于X1，X2的RS信息的符号的位置信息和权重信息。。。 XP; 获取携带与Y1，Y2相关的RS信息的符号的位置信息和权重信息。。。 YQ; 根据位置信息和权重信息计算向量I的自相关矩阵，其中I = [X1，X2，...，。。 XP，Y1，Y2。。。 YQ]; 根据位置信息和权重信息计算向量O和向量I的互相关矩阵，其中O = [Y0]，Y0是当前信道估计的符号的时域信道理想值执行以及计算所述互相关矩阵和所述自相关矩阵的逆矩阵乘积，从而获得与当前执行所述信道估计的符号对应的系数向量。根据本发明，能够计算最佳滤波系数。

5. 发明授权

US08737505B2 Method and apparatus of codebook transformation for interference mitigation in codebook-based precoding 有权
标题翻译：用于基于码本的预编码中的干扰减轻的码本转换的方法和装置
公开(公告)号：US08737505B2
公开(公告)日：2014-05-27
申请号：US12968519
申请日：2010-12-15
申请人： Wooram Shin , Jihyung Kim , Rong Ran , Dong Seung Kwon
发明人： Wooram Shin , Jihyung Kim , Rong Ran , Dong Seung Kwon
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04L25/0244 , H04L25/0206 , H04L25/0228 , H04L25/03343
摘要： When a transmitter communicating with a first receiver interferes with an adjacent second receiver, the transmitter receives a reference signal from the second receiver in order to transform a codebook to mitigate interference in the second receiver. A channel with the second receiver is estimated through the received reference signal, and a receiving correlation matrix is calculated based on the estimated channel. The inverse of the receiving correlation matrix is calculated from the calculated receiving correlation matrix, and the codebook is transformed using the calculated inverse of the receiving correlation matrix.
摘要翻译：当与第一接收机通信的发射机干扰相邻的第二接收机时，发射机从第二接收机接收参考信号，以便转换码本以减轻第二接收机中的干扰。通过接收到的参考信号来估计具有第二接收机的信道，并且基于所估计的信道来计算接收相关矩阵。从计算的接收相关矩阵计算接收相关矩阵的倒数，并使用计算的接收相关矩阵的逆变换码本。

6. 发明授权

US08649467B2 Multi-symbol channel estimation method for estimating channel response in a multi-carrier modulation system 有权
标题翻译：用于估计多载波调制系统中的信道响应的多符号信道估计方法
公开(公告)号：US08649467B2
公开(公告)日：2014-02-11
申请号：US13136048
申请日：2011-07-20
申请人： Shyue-Win Wei , Yih-Haw Jan , Ting-Ru Yan
发明人： Shyue-Win Wei , Yih-Haw Jan , Ting-Ru Yan
IPC分类号： H04L27/06
CPC分类号： H04L25/0204 , H04L25/022 , H04L25/023 , H04L25/0244 , H04L27/2647
摘要： A method of multi-symbol channel estimation for estimating channel response to a plurality of transmission symbols within an observation window transmitted through a time-varying channel in a multi-carrier modulation system is provided. The method is to be implemented using a channel estimation device, and includes the steps of: obtaining a window pilot receive vector according to a part of elements of each of receive symbols corresponding to pilots in a corresponding one of the transmission symbols; computing a window pilot channel trans form matrix based upon the pilots in the transmission symbols; computing an estimated value of a polynomial coefficient vector based upon the window pilot receive vector and the window pilot channel transform matrix; and for each of the transmission symbols, computing a plurality of estimated values of channel response associated with possible transmission paths in the time-varying channel according to the estimated value of the polynomial coefficient vector.
摘要翻译：提供了一种用于估计对通过多载波调制系统中的时变信道发送的观测窗内的多个发送符号的信道响应的多符号信道估计方法。该方法将使用信道估计设备来实现，并且包括以下步骤：根据对应于所述发送符号中的一个的导频的每个接收符号的元素的一部分获得窗口导频接收向量; 基于所述传输符号中的导频来计算窗口导频信道转换矩阵; 基于所述窗口导频接收向量和所述窗口导频信道变换矩阵来计算多项式系数向量的估计值; 并且对于每个传输符号，根据多项式系数向量的估计值来计算与时变信道中的可能传输路径相关联的信道响应的多个估计值。

7. 发明授权

US08531916B2 Channel impulse response estimation 有权
标题翻译：通道脉冲响应估计
公开(公告)号：US08531916B2
公开(公告)日：2013-09-10
申请号：US13646440
申请日：2012-10-05
申请人： Elliptic Laboratories AS
发明人： Tobias Gulden Dahl , Gudbrand Eggen
IPC分类号： G01S15/06 , G06F3/043
CPC分类号： G01S15/06 , G01S15/89 , H04L25/0212 , H04L25/0226 , H04L25/0244
摘要： A human-machine interface system adapted to track movement of an object in air is disclosed. In one aspect, the human-machine interface includes an acoustic transmitter, an acoustic receiver, and logic configured to apply a calculated inverse matrix of an impulse signal transmitted by the acoustic transmitter to a signal received by the acoustic receiver, wherein movement of the object is used to control the machine.
摘要翻译：公开了一种适于追踪物体在空气中的运动的人机界面系统。在一个方面，人机接口包括声发射器，声接收器和被配置为将由声发射器发送的脉冲信号的计算的逆矩阵应用于由声接收器接收的信号的逻辑，其中物体的移动用于控制机器。

8. 发明授权

US08477883B2 Maximum likelihood decoding method, equipment, and receiver 失效
标题翻译：最大似然解码方法，设备和接收机
公开(公告)号：US08477883B2
公开(公告)日：2013-07-02
申请号：US12192279
申请日：2008-08-15
申请人： Hironari Masui , Takashi Yano , Takehiko Kobayashi
发明人： Hironari Masui , Takashi Yano , Takehiko Kobayashi
IPC分类号： H04L27/06
CPC分类号： H04L25/03292 , H04L25/0206 , H04L25/0244 , H04L25/0246 , H04L2025/03426
摘要： Provided is a maximum likelihood decoding method of separating and estimating multiple transmitted signals transmitted by multiple transmitter antennas from multiple received signals received by multiple receiver antennas, comprising: a first step of generating a channel matrix based on channel impulse responses corresponding to the received signals; a second step of dividing the generated channel matrix into multiple sub-matrices, of identifying parts of the received signals corresponding to the sub-matrices obtained through the division, and of transforming the sub-matrices obtained through the division, by using inverse matrices of the sub-matrices obtained through the division; a third step of applying QR decomposition to the transformed sub-matrices to obtain triangular matrices, and of transforming the received signals of the parts by using the obtained triangular matrices; and a fourth step of determining one combination candidate for the parts of the transmitted signals corresponding to the transformed received signals.
摘要翻译：提供了一种从多个接收机天线接收的多个接收信号中分离和估计由多个发射机天线发射的多个发射信号的最大似然解码方法，包括：基于对应于接收信号的信道脉冲响应产生信道矩阵的第一步骤; 将生成的信道矩阵划分成多个子矩阵的第二步骤是识别与通过除法获得的子矩阵相对应的接收信号的部分，并且通过使用逆矩阵通过分割获得的子矩阵; 将QR分解应用于经变换的子矩阵以获得三角矩阵的第三步骤，以及通过使用获得的三角矩阵来变换部分的接收信号; 以及第四步骤，确定与变换后的接收信号对应的发送信号的一部分的一个组合候选。

9. 发明申请

US20130010808A1 SCATTERED PILOT PATTERN AND CHANNEL ESTIMATION METHOD FOR MIMO-OFDM SYSTEMS 有权
公开(公告)号：US20130010808A1
公开(公告)日：2013-01-10
申请号：US13616438
申请日：2012-09-14
申请人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
发明人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
IPC分类号： H04L27/28
CPC分类号： H04L27/2613 , H04B7/04 , H04B7/0413 , H04B7/0684 , H04L1/0618 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/022 , H04L25/0234 , H04L25/0244 , H04L27/2602 , H04L27/2627 , H04W52/42
摘要： Methods and apparatus are provided for inserting data symbols and pilot symbols in an OFDM (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and/or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to bases station) transmission resources in a two-dimensional time-frequency pattern. For each antenna of a MIMO-OFDM (multiple input multiple output OFDM) communication system, pilot symbols are inserted in a scattered pattern in time-frequency and data symbols are inserted in an identical frequency-hopping pattern in time-frequency as that of other antennas.

10. 发明授权

US08351487B1 Equalizer with adaptive noise loading 失效
标题翻译：均衡器具有自适应噪声负载
公开(公告)号：US08351487B1
公开(公告)日：2013-01-08
申请号：US13462840
申请日：2012-05-03
申请人： Meir Griniasty
发明人： Meir Griniasty
IPC分类号： H04B1/00
CPC分类号： H04L25/03019 , H04L25/0212 , H04L25/0244 , H04L2025/03509 , H04L2025/03566
摘要： A method for communication includes receiving signals at a receiver from one or more sources, including a target signal transmitted by a given transmitter. A channel response is estimated from the given transmitter to the receiver, and a filter response is computed by taking a sum of an autocorrelation of the received signals with an adaptive noise factor, and applying the sum to the estimated channel response. The filter response is applied to the received signals in order to recover the target signal.
摘要翻译：一种用于通信的方法包括从一个或多个源在接收机处接收信号，包括由给定发射机发送的目标信号。从给定的发射机估计信道响应到接收机，并且通过将接收到的信号的自相关和自适应噪声因子的和相加，并将该和应用到所估计的信道响应来计算滤波器响应。滤波器响应应用于接收到的信号，以便恢复目标信号。

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