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51. 发明申请

US20130077658A1 SPATIALLY RANDOMIZED PILOT SYMBOL TRANSMISSION METHODS, SYSTEMS AND DEVICES FOR MULTIPLE INPUT/MULTIPLE OUTPUT (MIMO) WIRELESS COMMUNICATIONS 有权
标题翻译：用于多输入/多输出（MIMO）无线通信的空间引导符号传输方法，系统和设备
公开(公告)号：US20130077658A1
公开(公告)日：2013-03-28
申请号：US13247597
申请日：2011-09-28
申请人： Dennis Hui , Kumar Balachandran , Jung-Fu Cheng , Jiann-Ching Guey
发明人： Dennis Hui , Kumar Balachandran , Jung-Fu Cheng , Jiann-Ching Guey
IPC分类号： H04L27/28 , H04B1/38 , H04L27/00
CPC分类号： H04B7/0413 , H04B7/0615 , H04B7/0686 , H04L5/0023 , H04L5/005 , H04L25/0204 , H04L25/0226 , H04L2025/03426
摘要： Compressive sampling is used to generate pilot symbols to be transmitted over an array of antennas in a MIMO wireless communications device. A pilot symbol is transmitted over the array of antennas according to a spatially randomized antenna transmission function that randomly changes across the array of antennas. The randomized antenna transmission function may randomly select/deselect antennas and/or randomly change amplitude and/or phase of the pilot symbol transmission. Channel estimates can be constructed at a receiver based on the spatially randomized pilot symbols that were transmitted.
摘要翻译：压缩采样用于生成将在MIMO无线通信设备中通过天线阵列传输的导频符号。根据在天线阵列上随机变化的空间随机天线传输功能，在天线阵列上传输导频符号。随机天线发送功能可以随机地选择/取消选择天线和/或随机地改变导频符号传输的幅度和/或相位。可以基于发送的空间随机化导频符号在接收机处构造信道估计。

52. 发明授权

US08379709B2 Channel estimation and equalization for hard-limited signals 有权
标题翻译：硬限制信号的信道估计和均衡
公开(公告)号：US08379709B2
公开(公告)日：2013-02-19
申请号：US12204217
申请日：2008-09-04
申请人： Dennis Hui , Kambiz Zangi
发明人： Dennis Hui , Kambiz Zangi
IPC分类号： H04L27/01
CPC分类号： H04B1/1027 , H04L25/0228 , H04L25/03019
摘要： The present invention provides a method and apparatus for channel estimation when the amplitude of a received signal is hard-limited. A channel estimator computes amplitude estimates for the received signal based on the phase samples of the received signal and previous channel estimates. The amplitude estimates may comprise the expected values of the amplitude given the phase samples and the initial channel estimates. The channel estimator then computes revised channel estimates based on the amplitude estimates and the phase samples. The process may be performed iteratively to refine the channel estimates during each iteration.
摘要翻译：本发明提供了当接收信号的幅度受到严格限制时的信道估计方法和装置。信道估计器基于接收信号和先前信道估计的相位采样来计算接收信号的幅度估计。幅度估计可以包括给定相位采样的幅度的预期值和初始信道估计。然后，信道估计器基于幅度估计和相位样本来计算修正的信道估计。可以迭代地执行该过程以在每次迭代期间优化信道估计。

53. 发明申请

US20120236774A1 JOINT MANAGEMENT OF RADIO AND TRANSPORT RESOURCES 有权
标题翻译：无线电和运输资源的联合管理
公开(公告)号：US20120236774A1
公开(公告)日：2012-09-20
申请号：US13048226
申请日：2011-03-15
申请人： Jiann-Ching Guey , Shing-Wa Wong , Jung-Fu Cheng , Dennis Hui
发明人： Jiann-Ching Guey , Shing-Wa Wong , Jung-Fu Cheng , Dennis Hui
IPC分类号： H04W72/10
CPC分类号： H04W28/16 , H04W72/04 , H04W92/12
摘要： A system for managing radio access resources includes a joint radio resource management/transport resource management unit configured to communicate with a plurality of radio units over a transport network, to jointly allocate radio resources at the radio unit and transport resources on the transport network in response to requests from wireless terminals requesting access to radio resources from the radio units, to send a radio resource allocation schedule to the plurality of radio units that defines radio resource allocations for the wireless terminals, and to generate a transport resource allocation schedule that defines transport resource allocations for the wireless terminals. The system further includes a transport resource controller configured to receive the transport resource allocation schedule and to map user data to physical transport resources on the transport network in response to the transport resource allocation schedule.
摘要翻译：一种用于管理无线电接入资源的系统包括：联合无线电资源管理/传输资源管理单元，被配置为通过传输网络与多个无线电单元进行通信，以在无线电单元处共同分配无线电资源，并响应于传输网络上的资源传输向来自无线单元请求接入无线电资源的无线终端的请求向定义无线终端的无线资源分配的多个无线单元发送无线资源分配调度，并生成定义传输资源的传输资源分配调度为无线终端分配。该系统还包括传输资源控制器，其被配置为接收传输资源分配调度，并且响应于传输资源分配调度，将用户数据映射到传输网络上的物理传输资源。

54. 发明授权

US08199865B2 Method and device for synchronization and channel estimation in a radio receiver 有权
标题翻译：无线电接收机中用于同步和信道估计的方法和装置
公开(公告)号：US08199865B2
公开(公告)日：2012-06-12
申请号：US11993522
申请日：2005-06-28
申请人： Dennis Hui , Abdulrauf Hafeez
发明人： Dennis Hui , Abdulrauf Hafeez
IPC分类号： H04L7/00 , H04B17/00
CPC分类号： H04L25/0212 , H04L25/0224
摘要： A device and method in a radio receiver for generating synchronization and channel estimation information based on three parameters consisting of a synchronization position, at least one whitening filter parameter, and a channel estimate. A spatially and temporally stacked signal model is generated by stacking successive samples of temporally adjacent received signal vectors and corresponding training vectors. Initial estimates of a first one or two of the three parameters are then generated based on the spatially and temporally stacked signal model. The rest of the three parameters are then computed based on the initial estimates of the first one or two parameters. If a stopping criterion is met, the method ends and the parameters are used to process the signal. If the stopping criterion is not met, additional iterations are performed to improve the synchronization and estimation information.
摘要翻译：一种无线电接收机中的装置和方法，用于基于由同步位置，至少一个白化滤波器参数和信道估计组成的三个参数来产生同步和信道估计信息。通过堆叠时间上相邻的接收信号向量和对应的训练向量的连续采样来生成空间和时间叠加的信号模型。然后基于空间和时间叠加的信号模型来生成三个参数中的第一个或两个的初始估计。然后根据第一个或两个参数的初始估计值计算三个参数的其余部分。如果满足停止标准，则该方法结束，参数用于处理信号。如果不满足停止标准，则执行附加迭代以改善同步和估计信息。

55. 发明申请

US20120100877A1 SYSTEMS AND METHOD FOR COORDINATED MULTIPOINT DOWNLINK TRANSMISSIONS 有权
标题翻译：用于协调多点下行链路传输的系统和方法
公开(公告)号：US20120100877A1
公开(公告)日：2012-04-26
申请号：US13335482
申请日：2011-12-22
申请人： Kambiz Zangi , Dennis Hui , Leonid Krasny
发明人： Kambiz Zangi , Dennis Hui , Leonid Krasny
IPC分类号： H04W24/02
CPC分类号： H04B7/024
摘要： A method for determining antenna weights for use in transmitting data from a plurality of base stations to a user device is disclosed. The antenna weights are determined using an input covariance matrix (S), and the input covariance matrix is determined subject to a predetermined power constraint and a predetermined, non-zero interference constraint.
摘要翻译：公开了一种用于确定用于从多个基站向用户设备发送数据的天线权重的方法。使用输入协方差矩阵（S）确定天线权重，并且在预定功率约束和预定的非零干扰约束条件下确定输入协方差矩阵。

56. 发明授权

US08024633B2 Method and apparatus for combined packet retransmission and soft decoding of combined packets in a wireless communication network 有权
标题翻译：在无线通信网络中组合分组重传和组合分组的软解码的方法和装置
公开(公告)号：US08024633B2
公开(公告)日：2011-09-20
申请号：US11746679
申请日：2007-05-10
申请人： Abdulrauf Hafeez , Dayong Chen , Dennis Hui
发明人： Abdulrauf Hafeez , Dayong Chen , Dennis Hui
IPC分类号： G08C25/02
CPC分类号： H04L1/1845 , H04L1/1812
摘要： In a wireless communication network using point-to-point or point-to-multipoint communications, this disclosure teaches the use of combined packets for retransmission and corresponding soft value processing at a receiver, wherein combined packets are formed as the logical combination of two or more previously transmitted packets and allow the receiver to use a single combined packet to correct one or more failed packets. For example, with the combined packet retransmission and corresponding soft value receiver processing as taught herein, a given receiver can use a given combined packet to correct bit errors in all (failed) packets comprising the combined packet as long as the bit errors in a failed packet do not overlap (or align) with bit errors in the other failed packets comprising the combined packet.
摘要翻译：在使用点对点或点对多点通信的无线通信网络中，本公开教导了在接收机处使用组合分组进行重传和对应的软值处理，其中组合分组被形成为两个或更先前传输的分组，并允许接收机使用单个组合分组来校正一个或多个故障分组。例如，通过组合的分组重传和如本文所教导的相应的软值接收器处理，给定的接收机可以使用给定的组合分组来校正包括组合分组的所有（失败的）分组中的比特错误，只要失败的比特错误分组不与包括组合分组的其他故障分组中的比特错误重叠（或对齐）。

57. 发明授权

US08023938B2 Co-sequence interference detection and treatment 有权
标题翻译：协同干扰检测与处理
公开(公告)号：US08023938B2
公开(公告)日：2011-09-20
申请号：US11628460
申请日：2004-06-18
申请人： Johan Axnäs , Magnus Olsson , Dennis Hui
发明人： Johan Axnäs , Magnus Olsson , Dennis Hui
IPC分类号： H04W24/00
CPC分类号： H04B1/7103 , H04B2201/70701 , H04L25/0224 , H04L25/03178 , H04L25/03292
摘要： Signal properties of a signal section (106) comprising a training sequence are compared with corresponding signal properties of other signal sections (108, 110). At a too large discrepancy, co-sequence interference is concluded to be present. The used signal property can preferably be a signal-to-noise ratio measure or a signal statistics measure. If the existence of co-sequence interference (102) is concluded, measures can be taken to avoid such interference and to mitigate the effects of the interference. A method for mitigating effects of co-sequence interference in channel estimation comprises a joint detection and estimation procedure performed under constrictions assuming presence of co-sequence interference.
摘要翻译：将包括训练序列的信号部分（106）的信号特性与其它信号部分（108,110）的相应信号特性进行比较。在一个太大的差异上，共序干扰得出结论。所使用的信号特性可以优选地是信噪比测量或信号统计测量。如果存在共序干扰（102），则可以采取措施避免这种干扰并减轻干扰的影响。用于减轻协同干扰在信道估计中的影响的方法包括在假设存在协同干扰的收缩下执行的联合检测和估计过程。

58. 发明授权

US08009727B2 Equalizer for single carrier FDMA receiver 有权
标题翻译：用于单载波FDMA接收机的均衡器
公开(公告)号：US08009727B2
公开(公告)日：2011-08-30
申请号：US11676638
申请日：2007-02-20
申请人： Dennis Hui , Jung-Fu Cheng , Håkan B. Björkegren
发明人： Dennis Hui , Jung-Fu Cheng , Håkan B. Björkegren
IPC分类号： H04B1/10
CPC分类号： H04L25/03159 , H04L5/0007 , H04L25/0204 , H04L25/0224 , H04L27/2647 , H04L2025/03414 , H04L2025/0342 , H04L2025/03426
摘要： A method of equalizing a received signal compensates for frequency selectivity of the communication channel taking into account channel estimation errors. The method comprises generating channel estimates for the received signal, computing filter weights for an equalizer based on said channel estimates and a covariance of the channel estimation error, and filtering the received signal using the computed filter weights.
摘要翻译：考虑到信道估计误差，均衡接收信号的方法补偿通信信道的频率选择性。该方法包括生成接收信号的信道估计，基于所述信道估计和信道估计误差的协方差计算均衡器的滤波器权重，以及使用计算的滤波器权重对接收信号进行滤波。

59. 发明申请

US20100279729A1 Zero-Forcing Linear Beamforming for Coordinated Cellular Networks with Distributed Antennas 有权
标题翻译：用于具有分布式天线的协调蜂窝网络的零强迫线性波束成形
公开(公告)号：US20100279729A1
公开(公告)日：2010-11-04
申请号：US12746372
申请日：2008-01-08
申请人： Dennis Hui , Kambiz Zangi
发明人： Dennis Hui , Kambiz Zangi
IPC分类号： H04B7/00
CPC分类号： H04B7/0617 , H04B7/024 , H04B7/0426 , H04B7/0465 , H04W52/346
摘要： In a distributed antenna system that includes a plurality of transmitters and a controller, a method, performed by the controller, may be characterized by performing dirty-paper coding on downlink transmissions to users based on an order of the users, calculating beamforming vectors to provide that each of the downlink transmissions associated with each of the users does not interfere with other users, and maximizing, based on the calculated beamforming vectors, a data rate subject to a power constraint of the distributed antenna system.
摘要翻译：在包括多个发射机和控制器的分布式天线系统中，由控制器执行的方法的特征在于，基于用户的次序对用户的下行链路传输执行脏纸编码，计算波束形成向量以提供与每个用户相关联的每个下行链路传输不会干扰其他用户，并且基于所计算的波束形成向量，最大化受到分布式天线系统的功率约束的数据速率。

60. 发明申请

US20100128824A1 BLIND FREQUENCY-OFFSET ESTIMATION FOR TEMPORALLY AND/OR SPATIALLY CORRELATED SIGNAL 有权
标题翻译：用于时间和/或空间相关信号的盲频率偏移估计
公开(公告)号：US20100128824A1
公开(公告)日：2010-05-27
申请号：US12275992
申请日：2008-11-21
申请人： Dennis Hui
发明人： Dennis Hui
IPC分类号： H04L27/06
CPC分类号： H04L27/2657 , H04L27/2671 , H04L27/2676 , H04L2027/0053 , H04L2027/0073
摘要： An iterative, blind, frequency-offset estimation process that does not require any training signal or demodulated information symbols is disclosed. Receivers embodying the disclosed processes can produce periodic frequency-offset estimates, without running computationally intensive equalization or demodulation algorithms, by exploiting the temporal correlation of the received signal in the time domain, as well as the received signal's correlation across in-phase and quadrature dimensions, in some embodiments, to find a frequency-offset estimate that best fits the received signal in a maximum-likelihood sense. In an exemplary method of estimating receiver frequency offset, a temporally stacked signal block is formed from multi-branch signal samples corresponding to each of two or more time-separated samples of the received signal. The temporally stacked signal block is used in computing a maximum-likelihood joint estimate of the receiver frequency offset and the spatial covariance of the temporally stacked signal block de-rotated by the receiver frequency offset.
摘要翻译：公开了不需要任何训练信号或解调信息符号的迭代盲盲频率估计过程。实现所公开的处理的接收机可以通过利用时域中的接收信号的时间相关性以及接收信号在同相和正交尺度上的相关性来产生周期性的频偏估计，而不需要运行计算密集的均衡或解调算法在一些实施例中，以最大似然意义找到最适合接收信号的频偏估计。在估计接收机频率偏移的示例性方法中，时间叠加的信号块由对应于接收信号的两个或更多个时间分离样本中的每一个的多分支信号样本形成。时间叠加的信号块用于计算接收机频率偏移的最大似然联合估计和由接收机频率偏移去旋转的时间叠加的信号块的空间协方差。

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