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61. 发明申请

US20080274727A1 Co-Sequence Interference Detection and Treatment 有权
标题翻译：共序干扰检测与处理
公开(公告)号：US20080274727A1
公开(公告)日：2008-11-06
申请号：US11628460
申请日：2004-06-18
申请人： Johan Axnas , Magnus Olsson , Dennis Hui
发明人： Johan Axnas , Magnus Olsson , Dennis Hui
IPC分类号： H04Q7/20 , H04B17/00 , H04M1/00
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）的信号特性与其他信号部分（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。

62. 发明授权

US07340016B2 Equalizers for multi-branch receiver 有权
标题翻译：多分支接收机的均衡器
公开(公告)号：US07340016B2
公开(公告)日：2008-03-04
申请号：US10889641
申请日：2004-07-12
申请人： Dennis Hui
发明人： Dennis Hui
IPC分类号： H04L1/02 , H04B1/10 , H04B7/02
CPC分类号： H04L25/03299 , H04L1/0618 , H04L25/03184 , H04L25/03331 , H04L2025/03375
摘要： A multi-branch receiver comprises a plurality of signal branches including branch filters to filter respective branch input signals and to produce corresponding branch output signals, a combiner to combine the branch output signals to produce a combined baseband signal, a pre-filter to filter the combined baseband signal to produce a received signal with minimum phase channel characteristics, and an equalizer to generate an estimate of a data sequence contained in the received signal.
摘要翻译：多分支接收机包括多个信号分支，包括分支滤波器以滤除相应的分支输入信号并产生相应的分支输出信号，组合器组合分支输出信号以产生组合基带信号，预滤波器以过滤组合基带信号以产生具有最小相位信道特性的接收信号，以及均衡器以产生包含在接收信号中的数据序列的估计。

63. 发明授权

US07321646B2 Methods and apparatus for pre-filtering a signal to increase signal-to-noise ratio and decorrelate noise 有权
标题翻译：用于对信号进行预滤波以提高信噪比并去噪声的方法和装置
公开(公告)号：US07321646B2
公开(公告)日：2008-01-22
申请号：US10716085
申请日：2003-11-18
申请人： Huseyin Arslan , Abdulrauf Hafeez , Rajaram Ramesh , Dennis Hui
发明人： Huseyin Arslan , Abdulrauf Hafeez , Rajaram Ramesh , Dennis Hui
IPC分类号： H04B1/10
CPC分类号： H04L25/03133 , H04L2025/03605
摘要： To receive a signal from a multiple-input-multiple-output (MIMO) communication channel, initial channel taps are generated based on an impulse response estimate of the MIMO communication channel. The received signal is pre-filtered using the initial channel taps to generate output channel taps and a corresponding output signal having an increased signal-to-noise ratio (SNR) and uncorrelated noise. The SNR is based on a ratio of the energy in a first subset of the output channel taps to the energy in a second subset of the output channel taps.
摘要翻译：为了从多输入多输出（MIMO）通信信道接收信号，基于MIMO通信信道的脉冲响应估计来生成初始信道抽头。使用初始信道抽头对接收到的信号进行预滤波以产生输出信道抽头和具有增加的信噪比（SNR）和不相关噪声的相应输出信号。 SNR基于输出信道抽头的第一子集中的能量与输出信道抽头的第二子集中的能量的比率。

64. 发明授权

US09100963B2 Time slot sharing in TDMA communication system 有权
标题翻译： TDMA通信系统中的时隙共享
公开(公告)号：US09100963B2
公开(公告)日：2015-08-04
申请号：US13877518
申请日：2010-10-07
申请人： Dennis Hui , Miguel Lopez
发明人： Dennis Hui , Miguel Lopez
IPC分类号： H04B7/212 , H04J3/00 , H04Q7/20 , H04L5/12 , H04W72/04 , H04L27/18 , H04L1/08 , H04W28/04
CPC分类号： H04W72/0446 , H04L1/08 , H04L27/18 , H04W28/04
摘要： The embodiments of the present invention relate to a method in a transmitting unit; a method in a receiving unit; a transmitting unit and a receiving unit, in a wireless communication network employing Time Division Multiple Access, TDMA, for transmitting and, receiving and demodulating data, respectively, the data being transmitted in a signal comprising a burst, wherein bursts relating to NMS number of mobile stations are multiplexed into a single time slot. The transmission comprises grouping a block of N b number of user code bits, representing the data to be transmitted, into NDS/NMS groups of user code bits. Mapping the groups of user code bits to data symbols such that one group is represented by one data symbol, thereby obtaining a block of data symbols, wherein each data symbol is drawn from one or more pre-defined complex-valued symbol constellation(s). The transmission further comprises repeating the block of data symbols, such that the burst to be transmitted comprises NMS number of equal blocks of data symbols, rotating the NMS number of blocks of data symbols according to a mobile-station-specific rotation, and transmitting the rotated blocks of data symbols in a burst in the time slot.
摘要翻译：本发明的实施例涉及发送单元中的方法; 接收单元中的方法; 发射单元和接收单元，在采用时分多址（TDMA）的无线通信网络中，分别用包括脉冲串的信号中的数据发送和接收和接收数据，所述信号包括突发，其中与NMS号移动台被复用到单个时隙中。传输包括将表示要发送的数据的N b个用户码位块的块分组成用户码位的NDS / NMS组。将用户代码位组映射到数据符号，使得一个组由一个数据符号表示，从而获得数据符号块，其中每个数据符号从一个或多个预定义复值符号星座绘制，。传输还包括重复数据符号块，使得要传输的突发包括NMS个数量相等的数据符号块，根据移动站特定的旋转来旋转数据符号块的NMS个数，在时隙中的突发中旋转的数据符号块。

65. 发明授权

US08914052B2 Backhaul signal compression through spatial-temporal linear prediction 有权
标题翻译：通过空间 - 时间线性预测的回程信号压缩
公开(公告)号：US08914052B2
公开(公告)日：2014-12-16
申请号：US13010432
申请日：2011-01-20
申请人： Dennis Hui
发明人： Dennis Hui
IPC分类号： H04B7/00 , H04B7/02 , H03M7/30 , H04W88/08 , H04B7/04
CPC分类号： H04B7/024 , H03M7/3073 , H03M7/3075 , H03M7/3082 , H04B7/0413 , H04W28/04 , H04W28/06 , H04W88/085
摘要： The technology in this application compresses multi-antenna complex-valued signals by exploiting both a spatial and a temporal correlation of the signals to remove redundancy within the complex-valued signals and substantially reduce the capacity requirement of backhaul links. At a receiver, the compressed signal is received, and a decompressor decompresses the received signal over space and over time to reconstruct the multiple antenna stream.
摘要翻译：该应用中的技术通过利用信号的空间和时间相关性来消除多天线复值信号，从而消除复值信号内的冗余，并大大降低了回程链路的容量需求。在接收机处，接收压缩信号，解压缩器通过空间和时间对接收的信号进行解压缩，以重构多天线流。

66. 发明授权

US08675718B2 Iterative precoder matrix computation method and apparatus 有权
标题翻译：迭代预编码矩阵计算方法和装置
公开(公告)号：US08675718B2
公开(公告)日：2014-03-18
申请号：US12571494
申请日：2009-10-01
申请人： Dennis Hui , Kambiz Zangi
发明人： Dennis Hui , Kambiz Zangi
IPC分类号： H04B1/38 , H04L27/00 , H04L7/00
CPC分类号： H04L25/03343 , H04B7/024 , H04B7/0617 , H04L5/0035 , H04L25/0204
摘要： Precoder weights employed at a base station which coordinates with other base stations to form a super-cell are determined by: (a) determining an initial downlink precoding matrix at the base station for a mobile station serviced by the base station in the super-cell; (b) revising a downlink receiver matrix associated with the mobile station based on the initial downlink precoding matrix; (c) transforming the downlink receiver matrix to an uplink precoder matrix associated with the mobile station; (d) revising an uplink receiver matrix associated with each base station in uplink communication with the mobile station based on the uplink precoder matrix associated with the mobile station; and (e) revising the initial downlink precoding matrix by transforming the uplink receiver matrix to a revised downlink precoding matrix. Steps (b), (c), (d) and (e) are repeated for a particular number of iterations to determine a final downlink precoding matrix for the mobile station.
摘要翻译：通过以下方式确定在与其他基站协调以形成超小区的基站处采用的预编码器权重：（a）确定在基站处由基站在超小区中服务的移动台的初始下行链路预编码矩阵 ; （b）基于初始下行链路预编码矩阵修改与移动台相关联的下行链路接收机矩阵; （c）将所述下行链路接收机矩阵变换为与所述移动台相关联的上行链路预编码器矩阵; （d）基于与所述移动站相关联的所述上行链路预编码器矩阵，修改与所述移动站的上行链路通信中与每个基站相关联的上行链路接收机矩阵; 以及（e）通过将所述上行链路接收机矩阵变换为修改的下行链路预编码矩阵来修改所述初始下行链路预编码矩阵。对于特定次数的迭代重复步骤（b），（c），（d）和（e）以确定移动台的最终下行链路预编码矩阵。

67. 发明申请

US20130136210A1 Metric Corrections for Demodulators Using Serial Localization with Indecision 有权
标题翻译：使用串行本地化的解调器的公制校正与犹豫不决
公开(公告)号：US20130136210A1
公开(公告)日：2013-05-30
申请号：US13306232
申请日：2011-11-29
申请人： Ali S. Khayrallah , Dennis Hui
发明人： Ali S. Khayrallah , Dennis Hui
IPC分类号： H04L27/06 , H03D1/24
CPC分类号： H04L25/03229 , H04L25/03012 , H04L25/0328 , H04L25/03305 , H04L27/3416 , H04L27/38 , H04L2025/0342 , H04L2025/03426
摘要： Demodulation methods and apparatus for a multi-stage SLI demodulator are disclosed. Residual signals from each demodulation stage are modeled as finite sets of unresolved signals and a new metric is introduced for use in search of best candidate symbol estimates. The metric may be evaluated based on a probability distribution function of the residual signals or a probability mass function of the unresolved signals. The metric may also be approximated by the sum of a conventional Euclidean metric and a correction metric. The best candidate symbol estimates generated from each stage of the multi-stage SLI demodulator are summed to form cumulative symbol estimates.
摘要翻译：公开了一种用于多级SLI解调器的解调方法和装置。来自每个解调级的残余信号被建模为有限的未解决信号组，并且引入新的度量用于搜索最佳候选符号估计。可以基于剩余信号的概率分布函数或未解决的信号的概率质量函数来评估度量。该度量也可以通过常规欧几里德度量和校正度量的总和来近似。从多级SLI解调器的每个级产生的最佳候选符号估计被相加以形成累积符号估计。

68. 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。

69. 发明申请

US20120236967A1 DATA MODULATION 有权
标题翻译：数据调制
公开(公告)号：US20120236967A1
公开(公告)日：2012-09-20
申请号：US13512973
申请日：2009-12-21
申请人： Dennis Hui , Miguel Lopez
发明人： Dennis Hui , Miguel Lopez
IPC分类号： H04L27/00 , H04L27/36
CPC分类号： H04L27/36 , H04L1/0041 , H04L27/3405
摘要： A modulator includes a symbol mapper that is configured to map respective bits sets of a bit sequence corresponding to a burst and including data, training, tail, and guard bits into respective symbols to form a symbol sequence of data, training, tail, and guard symbols. A vector precoder is configured to apply a vector precoding transformation to the data and training symbols to form precoded symbols. These precoded symbols are combined with the tail and guard symbols in a symbol processor to form a sequence of transmit symbols. The record precoding conducted by the modulator of a transmitter enables improved link performance without the cost of increased processing complexity of the receiver algorithm.
摘要翻译：调制器包括符号映射器，其被配置为将与突发相对应的比特序列的各个比特组映射到包括数据，训练，尾部和保护比特到相应符号中以形成数据，训练，尾部和后卫的符号序列符号。向量预编码器被配置为向数据和训练符号应用向量预编码变换以形成预编码符号。这些预编码符号与符号处理器中的尾部和保护符号组合以形成发送符号序列。由发射机的调制器执行的记录预编码器能够改善链路性能，而不会增加接收机算法的处理复杂度。

70. 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。

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