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1. 发明授权

US10097288B2 Single-stream sliced maximum likelihood aided successive interference cancellation 有权
公开(公告)号：US10097288B2
公开(公告)日：2018-10-09
申请号：US15233873
申请日：2016-08-10
申请人： ZTE Canada Inc.
发明人： Yiwen Liu , Dayong Chen
IPC分类号： H04W4/00 , H04B17/318 , H04B7/0413
摘要： A method includes estimating spatial signatures of the signal and interference data streams, forming a composite channel matrix comprising all or a subset of estimated spatial signatures, performing QR decomposition (QRD) of channel matrix with different spatial orderings, selecting the stream with the largest post-detection signal-to-interference-plus-noise ratio (SINR) based on the elements of the R matrices from different QRD processes, pre-processing received signal using the Q matrix corresponding to the spatial ordering with the largest SINR, demodulating the strongest stream using single-stream sliced maximum likelihood (SSS-ML) method, cancelling the strongest stream and demodulating the remaining weaker streams using low-complexity MMSE method.

2. 发明授权

US10027006B2 Integrated multi-band bandpass multiplexer based on dielectric resonators 有权
公开(公告)号：US10027006B2
公开(公告)日：2018-07-17
申请号：US15084338
申请日：2016-03-29
申请人： ZTE Corporation , ZTE Canada Inc.
发明人： Dajun Cheng , Hongwei Zhang
IPC分类号： H01P1/20 , H04L27/00 , H04L5/14 , H01P5/16
摘要： Various embodiments of an integrated multiband bandpass apparatus based on concentric dielectric ring resonators includes one or more radio frequency (RF) input transmission lines for receiving multi-band RF signals, multiple RF output transmission lines for receiving and transmitting multiple single-band RF signals, and a set of dielectric ring resonators coupled in between. The disclosed integrated multi-band bandpass apparatus based on dielectric ring resonators can support at least two operation modes, i.e., a multi-band bandpass filtering mode when used in one direction and a multi-band bandpass multiplexing mode when used in an opposite direction. When operating in the multi-band bandpass filtering mode, the multiple dielectric ring resonators can be used to simultaneously filter multi-band RF signals into multiple single-band bandpass signals. When operating in the multi-band bandpass multiplexing mode, the dielectric ring resonators can be used to multiplex multiple single-band bandpass signals into a multi-band RF signal.

3. 发明申请

US20170062938A1 MULTIBAND MICROLINE ANTENNA 审中-公开
标题翻译：多功能麦克风天线
公开(公告)号：US20170062938A1
公开(公告)日：2017-03-02
申请号：US15249034
申请日：2016-08-26
申请人： ZTE Corporation , ZTE Canada Inc.
发明人： Dajun Cheng , Di Xie , Hongwei Zhang
IPC分类号： H01Q9/04 , H01Q1/24 , H01Q1/48 , H01Q5/30
CPC分类号： H01Q1/243 , H01Q9/42
摘要： A multiband antenna includes a plurality of radiation elements, operative within different frequency bands. The multiband microline antenna includes a base substrate that has a signal feeding trace and a partial ground plane, and two or more additional substrates that have multiple microline radiation elements electromagnetically coupled to the signal feeding trace. Each microline radiation element has a width not greater than 0.1 millimeter, and varies in length and resonant frequency. Various disclosed embodiments include a multiband microline folded monopole antenna, a multiband microline loop antenna, a multiband microline inverted-F antenna and a multiband microline π-shaped antenna.
摘要翻译：多频天线包括在不同频带内工作的多个辐射元件。多波段微线天线包括具有信号馈送迹线和部分接地平面的基底基板，以及具有与信号馈送迹线电磁耦合的多个微线辐射元件的两个或更多个附加基板。每个微线辐射元件的宽度不大于0.1毫米，并且长度和谐振频率变化。各种公开的实施例包括多波段微线折叠单极天线，多波段微线环路天线，多波段微线倒F天线和多波段微线π形天线。

4. 发明授权

US10135503B2 Detection of spatially multiplexed signals for over-determined MIMO systems 有权
公开(公告)号：US10135503B2
公开(公告)日：2018-11-20
申请号：US15410506
申请日：2017-01-19
申请人： ZTE Canada Inc.
发明人： Dayong Chen , Yiwen Liu
IPC分类号： H04B7/0413 , H04B7/04 , H04L25/02 , H04B7/0456
摘要： Method and apparatus of obtaining better detection performance by improving matrix condition for an M×N over-determined MIMO system are disclosed. The condition of a matrix to be inverted for solving various detection problems is improved by reordering equations of the original MIMO system, resulting in a reordered channel matrix and reordered received signal vector so that the top N×N sub-matrix has the largest determinant among all N×N sub-matrices of the reordered channel matrix. The disclosed method may be used to obtain a more accurate estimate of the transmit data bits.

5. 发明申请

US20180013592A1 CHANNEL ESTIMATION USING COMPOSITE SUBCARRIERS AND COMBINED PILOTS 审中-公开
公开(公告)号：US20180013592A1
公开(公告)日：2018-01-11
申请号：US15545305
申请日：2016-01-19
申请人： ZTE Canada Inc.
发明人： Yiwen Liu , Dayong Chen
IPC分类号： H04L25/02
摘要： Techniques for minimum-mean-square-error (MMSE) channel estimator using channel-dependent composite subcarriers and combined pilots reduce computational complexity and memory usage while still achieving near optimum performance. A set of interpolation filters, that are pre-calculated for different radio propagation environments, e.g., channel state information, are stored in look up tables at the receiver and used to interpolate channel estimates for combined pilots to obtain channel estimates for individual subcarriers.

6. 发明申请

US20170324462A1 UNIFIED INTERFERENCE REJECTION COMBINING 审中-公开
公开(公告)号：US20170324462A1
公开(公告)日：2017-11-09
申请号：US15531402
申请日：2015-11-25
申请人： ZTE Canada Inc.
发明人： Dayong Chen , Yiwen Liu
IPC分类号： H04B7/08 , H04B7/0456 , H04L1/00 , H04W28/04
CPC分类号： H04B7/08 , H04B7/0434 , H04B7/0456 , H04B7/0854 , H04B7/0868 , H04L1/0036 , H04W28/04
摘要： A receiver for demodulating wireless signal using multiple receive antennas includes multiple signal detection modules, with each module implementing a non-interference rejection combining signal detection technique. The receiver makes a decision about whether or not to use an interference rejection combining technique, and which signal detection module to use based on the operating conditions of the received signals. When the decision is made to use an interference rejection combining technique, a single whitening filter is used to whiten the received signal prior to sending the whitened signal for processing by the signal detection module. The whitening filter may be calculated as a Cholesky decomposition of an impairment covariance matrix generated from the signals received at the multiple antennas.

7. 发明申请

US20170295007A1 INTEGRATED MULTIPLE-INPUT MULTIPLE-OUTPUT MULTI-BAND BANDPASS FILTER BANK 审中-公开
公开(公告)号：US20170295007A1
公开(公告)日：2017-10-12
申请号：US15481130
申请日：2017-04-06
申请人： ZTE Canada Inc.
发明人： Dajun Cheng
IPC分类号： H04L5/00
CPC分类号： H04L5/1469 , H04B7/0413 , H04L5/143
摘要： Techniques for multiband radio frequency (RF) signal communications using integrated multiple-input multiple-output (MIMO) multiband bandpass filter bank based on concentric dielectric ring resonators are described. The integrated MIMO multiband bandpass filter bank includes a plurality of transmission line structures for transmitting and receiving radio frequency (RF) signals, and a plurality of ring resonators with different sizes and different resonant frequencies electromagnetically coupled to the plurality of transmission line structures, wherein each ring resonator of the plurality of concentric ring resonators is configured as a single-band bandpass filter to allow a bandpass signal to pass through. By the use of integrated MIMO multiband bandpass filter bank, multiple desired bandpass signals corresponding to the multiple resonant frequencies of the multiple dielectric ring resonators can operate to transmit and receive in the processing of multiband RF signals while having out-of-band spurious emission and interference rejection.

8. 发明申请

US20170048045A1 SINGLE-STREAM SLICED MAXIMUM LIKELIHOOD AIDED SUCCESSIVE INTERFERENCE CANCELLATION 审中-公开
标题翻译：单流SLI最大的LIKELIHOOD辅助连续干扰消除
公开(公告)号：US20170048045A1
公开(公告)日：2017-02-16
申请号：US15233873
申请日：2016-08-10
申请人： ZTE Canada Inc.
发明人： Yiwen Liu , Dayong Chen
IPC分类号： H04L5/00 , H04B17/318 , H04B7/04
CPC分类号： H04B17/318 , H04B7/0413 , H04B7/0452 , H04J11/004
摘要： A method includes estimating spatial signatures of the signal and interference data streams, forming a composite channel matrix comprising all or a subset of estimated spatial signatures, performing QR decomposition (QRD) of channel matrix with different spatial orderings, selecting the stream with the largest post-detection signal-to-interference-plus-noise ratio (SINR) based on the elements of the R matrices from different QRD processes, pre-processing received signal using the Q matrix corresponding to the spatial ordering with the largest SINR, demodulating the strongest stream using single-stream sliced maximum likelihood (SSS-ML) method, cancelling the strongest stream and demodulating the remaining weaker streams using low-complexity MMSE method.
摘要翻译：一种方法包括估计信号和干扰数据流的空间特征，形成包括估计的空间特征的全部或一个子集的复合信道矩阵，执行具有不同空间排序的信道矩阵的QR分解（QRD），选择具有最大位置的流基于来自不同QRD处理的R矩阵的元素的检测信号与干扰加噪声比（SINR），使用与具有最大SINR的空间排序相对应的Q矩阵预处理接收信号，解调最强使用单流切片最大似然（SSS-ML）方法，使用低复杂度MMSE方法来消除最强的流和解调剩余的较弱流。

9. 发明申请

US20160294031A1 INTEGRATED MULTI-BAND BANDPASS MULTIPLEXER BASED ON DIELECTRIC RESONATORS 有权
标题翻译：基于介质谐振器的集成多带宽双工多路复用器
公开(公告)号：US20160294031A1
公开(公告)日：2016-10-06
申请号：US15084338
申请日：2016-03-29
申请人： ZTE Corporation , ZTE Canada Inc.
发明人： Dajun Cheng , Hongwei Zhang
IPC分类号： H01P1/20 , H04L5/14 , H04L27/00 , H01P7/10 , H01Q1/50
CPC分类号： H01P1/2002 , H01P5/16 , H04L5/143 , H04L27/0002
摘要： Various embodiments of an integrated multiband bandpass apparatus based on concentric dielectric ring resonators includes one or more radio frequency (RF) input transmission lines for receiving multi-band RF signals, multiple RF output transmission lines for receiving and transmitting multiple single-band RF signals, and a set of dielectric ring resonators coupled in between. The disclosed integrated multi-band bandpass apparatus based on dielectric ring resonators can support at least two operation modes, i.e., a multi-band bandpass filtering mode when used in one direction and a multi-band bandpass multiplexing mode when used in an opposite direction. When operating in the multi-band bandpass filtering mode, the multiple dielectric ring resonators can be used to simultaneously filter multi-band RF signals into multiple single-band bandpass signals. When operating in the multi-band bandpass multiplexing mode, the dielectric ring resonators can be used to multiplex multiple single-band bandpass signals into a multi-band RF signal.
摘要翻译：基于同心介质环谐振器的集成多频带带通装置的各种实施例包括用于接收多频带RF信号的一个或多个射频（RF）输入传输线，用于接收和发送多个单频RF信号的多个RF输出传输线，以及耦合在其间的一组介质环谐振器。所公开的基于介质环谐振器的集成多频带带通装置可以支持至少两种操作模式，即当在相反方向上使用时在一个方向上使用多频带带通滤波模式和多频带带通复用模式。当在多频带带通滤波模式下工作时，可以使用多个介质环谐振器将多频带RF信号同时滤波为多个单频带带通信号。当在多波段带通复用模式下工作时，介质环谐振器可用于将多个单频带带通信号复用为多频带RF信号。

10. 发明授权

US10237781B2 Channel quality estimation for link adaptation within interference limited systems 有权
公开(公告)号：US10237781B2
公开(公告)日：2019-03-19
申请号：US15436312
申请日：2017-02-17
申请人： ZTE Corporation , ZTE Canada Inc.
发明人： Xing Qian , Yu Chen
IPC分类号： H04L25/03 , H04L27/26 , H04W28/04 , H04L1/00 , H04L25/02 , H04J11/00 , H04L27/00 , H04L5/00
摘要： To process received wireless signals received in a receiver, a noise and interference estimate is generated by subtracting the serving cell component from the received OFDM signal, a normalized noise signal is produced by whitening the noise and interference estimate, interference information is detected from the normalized noise signal associated with corresponding reliability information indicating reliability of the interference information, interference cancellation is performed based on the interference information, and a performance indicator indicative of an accuracy of the interference cancellation is adaptively adjusted using the reliability information.

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