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公开(公告)号：US20150146546A1
公开(公告)日：2015-05-28
申请号：US14087825
申请日：2013-11-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shashi Kant , Fredrik Rusek , Sha Hu , Basuki Endah Priyanto
CPC classification number: H04B7/0413 , H04B7/0848
Abstract: UE (120) and method (500) in a UE (120), for MIMO detection of signals received from a radio network node (110), comprised in a wireless communication network (100). The method (500) comprises receiving (501) a signal of the radio network node (110). The method (500) also comprises establishing (510) a list of hypotheses candidate vector. Furthermore, the method (500) in addition comprises computing (511) path metrics of the established (510) list of hypotheses candidate vector, and thereby computing LLRs utilising the computed path metrics for achieving MIMO detection.
Abstract translation: UE（120）中的UE（120）和方法（500），用于对包括在无线通信网络（100）中的无线电网络节点（110）接收的信号进行MIMO检测。 方法（500）包括接收（501）无线电网络节点（110）的信号。 方法（500）还包括建立（510）假设候选向量的列表。 此外，方法（500）另外包括计算（511）所建立的（510）假设候选向量列表的路径量度，从而利用计算出的路径度量来计算LLR以实现MIMO检测。
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公开(公告)号：US09083597B1
公开(公告)日：2015-07-14
申请号：US14553845
申请日：2014-11-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Fredrik Rusek , Basuki Endah Priyanto
CPC classification number: H04L27/2672 , H04L27/16 , H04L27/266 , H04L27/2675 , H04L27/2682 , H04L27/2684
Abstract: Receiver and method in a receiver, for estimating a normalised frequency offset between a transmitter and the receiver in a wireless communication system, based on Orthogonal Frequency Division Multiplexing, OFDM. The method comprises receiving a first pilot signal (yr1) and a second pilot signal (yr2) from the transmitter; computing a Karhunen-Loeve approximation λK(φ), up to any finite order K of a log-likelihood function λ(φ), based on the received pilot signals (yr1, yr2); and estimating the frequency offset by calculating a maximum value of the computed Karhunen-Loeve approximation λK(φ).
Abstract translation: 接收机中的接收机和方法，用于基于正交频分复用OFDM估计无线通信系统中的发射机与接收机之间的归一化频率偏移。 该方法包括从发射机接收第一导频信号（yr1）和第二导频信号（yr2）; 基于接收到的导频信号（yr1，yr2），计算到对数似然函数λ（＆phgr;）的任何有限阶K的Karhunen-Loeve近似λK（＆phgr） 并且通过计算所计算的Karhunen-Loeve近似值λK（＆phgr）的最大值来估计频率偏移。
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公开(公告)号：US20170288911A1
公开(公告)日：2017-10-05
申请号：US15623964
申请日：2017-06-15
Applicant: Huawei Technologies Co., Ltd.
Inventor： Fredrik Rusek , Basuki Endah Priyanto
IPC: H04L25/02 , H04L27/26 , H04B7/0413 , H04L5/00
CPC classification number: H04L25/0256 , H04B7/0413 , H04L5/0048 , H04L25/0204 , H04L25/0206 , H04L25/0228 , H04L25/03159 , H04L25/03318 , H04L27/2649
Abstract: Receiver and method in a receiver, for receiving a signal from a transmitter in a wireless communication system, based on OFDM. The method comprises: receiving a plurality of signals y from the transmitter; determining a group T of REs for which the CEE is assumed to be constant; extracting the determined group T of REs, from the received signals y; computing noise and CEE covariance matrix Rww for the extracted T REs, initialised as: Rww=(N0+Mσ2)I; computing a MMSE filter WMMSE, based on the computed noise and CEE covariance matrix Rww; and obtaining an MMSE estimate {circumflex over (x)} of payload data x comprised in the received signals y, associated with the extracted T REs by applying the computed filter WMMSE to the extracted T REs of the received signals: {circumflex over (x)}=WMMSEy.
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公开(公告)号：US09674003B2
公开(公告)日：2017-06-06
申请号：US14457877
申请日：2014-08-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shashi Kant , Fredrik Rusek , Gengshi Wu , Basuki Endah Priyanto , Sha Hu , Jianjun Chen
CPC classification number: H04L25/0204 , H04B7/0413 , H04L1/0017 , H04L1/1835 , H04L25/025 , H04L25/0256 , H04L25/03898 , H04L25/03949 , H04L25/067 , H04W72/085
Abstract: Receiver and method in a receiver, for iterative channel estimation and data decoding of signals received from a radio network node, located in a wireless communication network. The method comprises detecting a signal of the radio network node, performing channel estimation of the detected signal, based on iterative application of a Space Alternating Generalized Expectation and maximization, SAGE, algorithm, determining a channel/link quality, based on the performed channel estimation and the estimated channel parameters, selecting Multiple-Input and Multiple-Output, MIMO, detector, based on the determined channel quality, determining to enable and/or disable, respectively, soft-Iterative Channel Estimation, soft-ICE, based on the determined channel quality, and iterating the performed channel estimation for a predetermined number of times.
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公开(公告)号：US20150078490A1
公开(公告)日：2015-03-19
申请号：US14031805
申请日：2013-09-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sha HU , Fredrik Rusek , Gengshi WU , Shashi Kant , Basuki Endah Priyanto , Jianjun Chen
CPC classification number: H04L1/0054 , H04B7/0413 , H04L25/0328 , H04L25/03318 , H04L25/03891 , H04W24/02
Abstract: A user equipment (UE) and a method are presented. The UE comprises a receiver unit and a processing circuit, and is configured for receiving wireless signals. The processing circuit is arranged for performing pre-detection of the received signals providing an initial estimation of transmitted signals. The processing circuit is also arranged for splitting the transmitted signal into disjoint subgroups, each one covering a subgroup of all layers used for the transmitted signal such that the subgroups together cover all the layers. The processing circuit is also arranged for interference cancellation performed on the subgroups of transmitted signals based on the initial estimation of the transmitted signals. The processing circuit is also arranged for detection of the subgroups of transmitted signals by utilization of an MLD algorithm, wherein the subgroup of layers within each one of the subgroups of transmitted signals is detected simultaneously.
Abstract translation: 提出了一种用户设备（UE）和方法。 UE包括接收机单元和处理电路，并且被配置为用于接收无线信号。 该处理电路用于执行提供传输信号的初始估计的接收信号的预检测。 处理电路还被布置为将发送的信号分离成不相交的子组，每个子组覆盖用于发送信号的所有层的子组，使得子组一起覆盖所有层。 处理电路还被布置成基于发射信号的初始估计对发射信号的子组执行干扰消除。 该处理电路还用于利用MLD算法来检测发送信号的子组，其中同时检测发送信号的每个子组内的每个子组的子组。
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Patent Agency Ranking
6.发明授权公开(公告)号：US09485002B2
公开(公告)日：2016-11-01
申请号：US14068607
申请日：2013-10-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Fredrik Rusek , Basuki Endah Priyanto , Sha Hu , Gengshi Wu , Shashi Kant
CPC classification number: H04B7/0837 , H04B7/0413 , H04L25/03171 , H04L25/0328 , H04L25/03821 , H04L25/03968 , H04L27/2691 , H04W28/04
Abstract: The present invention relates to an equalizing method in a receiver node of a cellular wireless communication system, the method comprising: receiving at least one radio signal comprising a plurality of resource elements; obtaining interference information associated with the plurality of resource elements; extracting resource elements from the plurality of resource elements carrying data into a first set based on the interference information; dividing the resource elements in the first set into one or more sub-sets each comprising T number of resource elements; filtering the resource elements in said one or more sub-sets by applying a balanced whitening and energy focusing filter W so as to obtain filtered resource elements y; and equalizing the filtered resource elements y. The invention also relates to a receive device, a computer program, and a computer program product.
Abstract translation: 本发明涉及蜂窝无线通信系统的接收机节点中的均衡方法，所述方法包括：接收包括多个资源元素的至少一个无线电信号; 获得与所述多个资源元素相关联的干扰信息; 基于所述干扰信息，从携带数据的所述多个资源元素提取资源元素到第一集合; 将第一组中的资源元素划分成每个包括T个资源元素的一个或多个子集; 通过应用平衡白化和能量聚焦滤波器W对所述一个或多个子集中的资源元素进行滤波，以获得滤波后的资源元素y; 并均衡经过过滤的资源元素y。 本发明还涉及接收设备，计算机程序和计算机程序产品。
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公开(公告)号：US20150117391A1
公开(公告)日：2015-04-30
申请号：US14068607
申请日：2013-10-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Fredrik Rusek , Basuki Endah Priyanto , Sha Hu , Gengshi Wu , Shashi Kant
CPC classification number: H04B7/0837 , H04B7/0413 , H04L25/03171 , H04L25/0328 , H04L25/03821 , H04L25/03968 , H04L27/2691 , H04W28/04
Abstract: The present invention relates to an equalizing method in a receiver node of a cellular wireless communication system, the method comprising: receiving at least one radio signal comprising a plurality of resource elements; obtaining interference information associated with the plurality of resource elements; extracting resource elements from the plurality of resource elements carrying data into a first set based on the interference information; dividing the resource elements in the first set into one or more sub-sets each comprising T number of resource elements; filtering the resource elements in said one or more sub-sets by applying a balanced whitening and energy focusing filter W so as to obtain filtered resource elements y; and equalizing the filtered resource elements y. The invention also relates to a receive device, a computer program, and a computer program product.
Abstract translation: 本发明涉及蜂窝无线通信系统的接收机节点中的均衡方法，所述方法包括：接收包括多个资源元素的至少一个无线电信号; 获得与所述多个资源元素相关联的干扰信息; 基于所述干扰信息，从携带数据的所述多个资源元素提取资源元素到第一集合; 将第一组中的资源元素划分成每个包括T个资源元素的一个或多个子集; 通过应用平衡白化和能量聚焦滤波器W对所述一个或多个子集中的资源元素进行滤波，以获得滤波后的资源元素y; 并均衡经过过滤的资源元素y。 本发明还涉及接收设备，计算机程序和计算机程序产品。
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公开(公告)号：US20140369300A1
公开(公告)日：2014-12-18
申请号：US14459464
申请日：2014-08-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sha Hu , Gengshi Wu , Basuki Endah Priyanto , Fredrik Rusek , Shashi Kant , Jianjun Chen
CPC classification number: H04B7/005 , H04J11/004 , H04J11/0046 , H04J11/005 , H04L25/03305 , H04L25/03318 , H04W72/0406
Abstract: The present disclosure relates to an iterative pilot symbol interference cancellation method in a receiver node of a cellular wireless communication system. The method includes receiving a superimposed signal comprising pilot symbols and data symbols associated with a serving cell and pilot symbols associated with one or more interfering cells, extracting a first set from the superimposed signal. The first set includes a plurality of data symbols associated with said serving cell which are affected by an interference from the one or more interfering cells. The method further includes estimating an interference of the first set, removing interference from the first set using the estimated interference, estimating the plurality of data symbols, subtracting the estimated plurality of data symbols from the first set, and repeating the estimating an interference, the removing interference, the estimating plurality of data symbols, and the subtracting steps i number of times, where i≧1.
Abstract translation: 本公开涉及蜂窝无线通信系统的接收机节点中的迭代导频符号干扰消除方法。 该方法包括：接收叠加的信号，该叠加信号包括与服务小区相关联的导频符号和数据符号以及与一个或多个干扰小区相关联的导频符号，从叠加信号中提取第一组。 第一组包括与由所述一个或多个干扰小区的干扰影响的与所述服务小区相关联的多个数据符号。 该方法还包括估计第一组的干扰，使用估计的干扰去除来自第一组的干扰，估计多个数据符号，从第一组中减去估计的多个数据符号，并重复估计干扰， 去除干扰，估计多个数据符号和减法步骤i次数，其中i≥1。
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公开(公告)号：US09160383B2
公开(公告)日：2015-10-13
申请号：US14077968
申请日：2013-11-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianjun Chen , Fredrik Rusek , Sha Hu , Gengshi Wu , Basuki Endah Priyanto , Shashi Kant
CPC classification number: H04B1/1027 , H04B1/16 , H04B7/0413 , H04B7/0456 , H04B7/0891 , H04L25/03305 , H04L2025/03426
Abstract: The present disclosure relates to an iterative method for estimating covariance matrices of communication signals comprising a) computing a reference symbol covariance matrix estimate (k,l); b) inputting said reference symbol covariance matrix estimate (k,l) to a detector or a decoder in a first iteration, and thereafter inputting the covariance matrix estimate output from e) to the detector or the decoder in subsequent iterations to obtain an updated demodulated or decoded communication signal for each iteration; c) inputting the demodulated or decoded communication signal to a symbol generator; d) computing an updated data covariance matrix estimate (k,l) for each iteration based on data symbols of said regenerated communication signal; e) combining said reference symbol covariance matrix estimate (k,l) and said updated data covariance matrix estimate (k,l); and f) forwarding said covariance matrix estimate output to the detector or decoder in b) to obtain the updated demodulated or decoded communication signal for each iteration.
Abstract translation: 本公开涉及一种用于估计通信信号的协方差矩阵的迭代方法，包括：a）计算参考符号协方差矩阵估计（k，l）; b）在第一次迭代中将所述参考符号协方差矩阵估计（k，l）输入到检测器或解码器，然后在随后的迭代中将从e）输出的协方差矩阵估计输入到检测器或解码器，以获得更新的解调 或每个迭代的解码通信信号; c）将解调或解码的通信信号输入到符号发生器; d）基于所述再生通信信号的数据符号计算每次迭代的更新数据协方差矩阵估计（k，l）; e）组合所述参考符号协方差矩阵估计（k，l）和所述更新的数据协方差矩阵估计（k，l）; 以及f）在b）中将所述协方差矩阵估计输出转发到检测器或解码器，以获得每次迭代的经更新的解调或解码的通信信号。
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公开(公告)号：US09118446B2
公开(公告)日：2015-08-25
申请号：US14031805
申请日：2013-09-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sha Hu , Fredrik Rusek , Gengshi Wu , Shashi Kant , Basuki Endah Priyanto , Jianjun Chen
CPC classification number: H04L1/0054 , H04B7/0413 , H04L25/0328 , H04L25/03318 , H04L25/03891 , H04W24/02
Abstract: A user equipment (UE) and a method are presented. The UE comprises a receiver unit and a processing circuit, and is configured for receiving wireless signals. The processing circuit is arranged for performing pre-detection of the received signals providing an initial estimation of transmitted signals. The processing circuit is also arranged for splitting the transmitted signal into disjoint subgroups, each one covering a subgroup of all layers used for the transmitted signal such that the subgroups together cover all the layers. The processing circuit is also arranged for interference cancellation performed on the subgroups of transmitted signals based on the initial estimation of the transmitted signals. The processing circuit is also arranged for detection of the subgroups of transmitted signals by utilization of an MLD algorithm, wherein the subgroup of layers within each one of the subgroups of transmitted signals is detected simultaneously.
Abstract translation: 提出了一种用户设备（UE）和方法。 UE包括接收器单元和处理电路，并且被配置为用于接收无线信号。 该处理电路用于执行提供传输信号的初始估计的接收信号的预检测。 处理电路还被布置为将发送的信号分离成不相交的子组，每个子组覆盖用于发送信号的所有层的子组，使得子组一起覆盖所有层。 处理电路还被布置成基于发射信号的初始估计对发射信号的子组执行干扰消除。 该处理电路还用于利用MLD算法来检测发送信号的子组，其中同时检测发送信号的每个子组内的每个子组的子组。
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