公开(公告)号：US08107560B2

公开(公告)日：2012-01-31

申请号：US10844155

申请日：2004-05-12

申请人： Dayong Chen ,  Dennis Hui

发明人： Dayong Chen ,  Dennis Hui

IPC分类号： H04L27/22

CPC分类号： H04L27/0012

摘要： A method and apparatus blindly detects a received signal's modulation type characterizing an impairment component of the received signal for each postulated modulation type by determining spatial correlations between In-phase and Quadrature components of the received signal. The blind detection circuit then detects the modulation type based on the characterized impairment component. A metric generator generates a postulation metric for each postulated modulation type based on the characterized impairment component. After evaluating the postulation metrics, an evaluation circuit identifies the postulated modulation type having the best postulation metric as the modulation type of the received signal. According to an exemplary embodiment, the blind detection circuit determines a whitened noise estimate for each postulated modulation type and generates the postulation metrics based on the whitened noise estimate to reduce interference effects in the postulation metrics.

摘要翻译： 一种方法和装置通过确定接收信号的同相和正交分量之间的空间相关性，盲目检测每个假设调制类型表征接收信号的损伤分量的接收信号的调制类型。 然后，盲检测电路基于所表征的损伤分量检测调制类型。 度量发生器基于特征的损伤分量为每个假设的调制类型生成假设度量。 在评估假设度量之后，评估电路将具有最佳假设度量的假定调制类型识别为接收信号的调制类型。 根据示例性实施例，盲检测电路确定每个假设调制类型的白化噪声估计，并且基于白化噪声估计生成假设度量，以减少假设度量中的干扰影响。

公开(公告)号：US20110274185A1

公开(公告)日：2011-11-10

申请号：US13145223

申请日：2009-01-19

申请人： Jiansong Gan ,  Dennis Hui

发明人： Jiansong Gan ,  Dennis Hui

IPC分类号： H04L27/00

CPC分类号： H04L27/2647 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0626 ,  H04L1/0026 ,  H04L25/03343 ,  H04L2025/03426

摘要： A method and an arrangement (600) in a user equipment (140) for quantizing channel state information in a coordinated multi-point transmission radio communication system (100). A dominant path is between the user equipment (140) and a first network node (110) and a non-dominant path is between the user equipment (140) and a second network node (120, 130). A ratio of the non-dominant path channel response, such as fast fading, to the dominant path channel response is quantized by using a codebook disclosed herein. A method and an arrangement (400) for generating a codebook by applying a log squared error distortion measure in an iterative algorithm. A method and an arrangement (900) in a user equipment (140) for allocating available bits among at least two quantized ratios in a channel state information feedback procedure. The bits are allocated by means of selecting (270) at least one codebook based on statistic properties, such as path gain, of the non-dominant path.

摘要翻译： 一种用于在协调的多点传输无线电通信系统（100）中量化信道状态信息的用户设备（140）中的方法和装置（600）。 主要路径在用户设备（140）和第一网络节点（110）之间，并且非主导路径在用户设备（140）和第二网络节点（120,130）之间。 通过使用本文公开的码本来量化非优势路径信道响应（例如快速衰落）与主路径信道响应的比率。 一种用于通过在迭代算法中应用对数平方误差失真测量来生成码本的方法和装置（400）。 一种在用户设备（140）中用于在信道状态信息反馈过程中在至少两个量化比率中分配可用比特的方法和装置（900）。 通过基于非主导路径的统计特性（例如路径增益）来选择（270）至少一个码本来分配比特。

公开(公告)号：US20110064035A1

公开(公告)日：2011-03-17

申请号：US12634250

申请日：2009-12-09

申请人： Igor Moáco Guerreiro ,  Charles Casimiro Cavalcante ,  Darlan Cavalcante Moreira ,  Dennis Hui ,  Icaro L. Silva

发明人： Igor Moáco Guerreiro ,  Charles Casimiro Cavalcante ,  Darlan Cavalcante Moreira ,  Dennis Hui ,  Icaro L. Silva

IPC分类号： H04B15/00 ,  H04W72/00

CPC分类号： H04B1/1027 ,  H04B7/0434 ,  H04B7/0626 ,  H04B7/0639 ,  H04B17/345

摘要： According to the teachings presented herein, each base station in a group of base stations is linked to an associated terminal as a receiver-transmitter pair. These receiver-transmitter pairs reuse channelization resources, such that each terminal represents a source of other-cell interference (also referred to as multi-user interference or MUI) for other terminals in neighboring cells that are reusing all or some of the same channelization resources. Accordingly, the base stations implement a gaming-based algorithm to mitigate MUI for the multiple-input-multiple-output (MIMO) uplink signals received from their associated terminals. More particularly, each base station functions as a player in a game, in which the allowed gaming action is the selection of the precoding matrix to be used for MIMO uplink transmissions to the base station from an associated terminal.

摘要翻译： 根据本文给出的教导，一组基站中的每个基站作为接收机 - 发射机对链接到相关联的终端。 这些接收机 - 发射机对重用信道化资源，使得每个终端表示对相邻小区中用于重用所有或一些相同信道化资源的相邻小区中的其他终端的其他小区干扰源（也称为多用户干扰或MUI） 。 因此，基站实施基于游戏的算法来减轻从其相关终端接收的多输入多输出（MIMO）上行链路信号的MUI。 更具体地，每个基站用作游戏中的玩家，其中允许的游戏动作是选择用于从相关联的终端到基站的MIMO上行链路传输的预编码矩阵。

公开(公告)号：US20080282125A1

公开(公告)日：2008-11-13

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： H04L1/18

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）。

公开(公告)号：US20080279182A1

公开(公告)日：2008-11-13

申请号：US11746920

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： H04L12/56

CPC分类号： H04L1/0045 ,  H03M13/3761 ,  H04B7/15521 ,  H04L1/0054 ,  H04L1/1845 ,  H04L2001/0096

摘要： According to a method and apparatus taught herein, a network node includes a receiver circuit that determines soft values for received packets corresponding to the information bit groups associated with network coding operations, where the soft values are determined for each information bit group based on joint probabilities of the information bits within the information bit group. For example, first soft values are determined for the information bit groups in a first (received) constituent packet and second soft values are likewise determined for the information bit groups in a network-coded (received) packet that depends on the first constituent packet and a second constituent packet. Third soft values are generated for the information bit groups of the second constituent packet based on jointly evaluating the first and second soft values.

摘要翻译： 根据本文教导的方法和装置，网络节点包括接收机电路，其确定与与网络编码操作相关联的信息比特组对应的接收分组的软值，其中基于联合概率为每个信息比特组确定软值 信息位组内的信息位。 例如，为第一（接收）构成分组中的信息比特组确定第一软值，并且同样地确定依赖于第一组成分组的网络编码（接收）分组中的信息比特组的第二软值， 第二组成分组。 基于联合评估第一和第二软值，为第二组成分组的信息比特组生成第三软值。

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。

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。

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。

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。

公开(公告)号：US09019849B2

公开(公告)日：2015-04-28

申请号：US13290677

申请日：2011-11-07

申请人： Dennis Hui ,  Jiann-Ching Guey

发明人： Dennis Hui ,  Jiann-Ching Guey

IPC分类号： G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26 ,  H04J1/00 ,  H04B7/10 ,  H04L1/02 ,  H04B1/00 ,  H04B15/00 ,  H03C7/02 ,  H04B1/02 ,  H04B7/02 ,  H04L5/14 ,  H01Q3/26 ,  H04B7/06 ,  H04B7/08 ,  H04B7/04

CPC分类号： H04L5/14 ,  H01Q3/2611 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0691 ,  H04B7/0874 ,  H04B17/345

摘要： A system and method to perform Full Duplex (FD) Space Division Duplex (SDD) communication using a Self-Interference Cancelling (SIC) precoder that applies different antenna phase shifts and amplitude scales to the transmitted signals to force them to be in the null space of the selected receive antennas. Thus, a wireless communication unit can place nulls at each of its receive antennas digitally at baseband for one or more frequency bands. The SIC precoder may be computed based on the self-interference channel from the transmit chain(s) to the receive chain(s). Different SIC precoders may be adaptively selected and stored digitally for different frequency bands. Subsequent single or multi-user precoder can be applied in concatenation with the SIC precoder to transmit signals to one or more users while receiving signals from one or more users simultaneously over the same frequency band.

摘要翻译： 使用自干扰消除（SIC）预编码器执行全双工（FD）空分双工（SDD）通信的系统和方法，该预编码器将不同的天线相移和幅度刻度应用于发射的信号，以迫使它们处于零空间 的选定接收天线。 因此，无线通信单元可以在其每个接收天线上在一个或多个频带的基带处以数字方式放置零点。 可以基于从发射链到接收链的自干扰信道来计算SIC预编码器。 不同的SIC预编码器可以针对不同的频带进行数字自适应地选择和存储。 随后的单用户或多用户预编码器可以与SIC预编码器级联应用，以在同一频带上同时从一个或多个用户接收信号的同时向一个或多个用户发送信号。