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1. 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）。

2. 发明申请

US20080282125A1 Method and Apparatus for Combined Packet Retransmission and Soft Decoding of Combined Packets in a Wireless Communication Network 有权
标题翻译：无线通信网络中组合分组的组合分组重传和软解码的方法和装置
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）。

3. 发明申请

US20080279182A1 Method and Apparatus for the Use of Network Coding in a Wireless Communication Network 有权
标题翻译：在无线通信网络中使用网络编码的方法和装置
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。

4. 发明授权

US08205140B2 Method and apparatus for the use of network coding in a wireless communication network 有权
标题翻译：在无线通信网络中使用网络编码的方法和装置
公开(公告)号：US08205140B2
公开(公告)日：2012-06-19
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： H03M13/00
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。

5. 发明授权

US08219128B2 Network-centric link adaptation for coordinated multipoint downlink transmission 有权
标题翻译：用于协调多点下行链路传输的以网络为中心的链路自适应
公开(公告)号：US08219128B2
公开(公告)日：2012-07-10
申请号：US12483603
申请日：2009-06-12
申请人： Kambiz Zangi , Abdulrauf Hafeez , Dennis Hui
发明人： Kambiz Zangi , Abdulrauf Hafeez , Dennis Hui
IPC分类号： H04B15/00 , H04B17/00 , H04B7/185
CPC分类号： H04L1/0001 , H04J11/0053 , H04L1/0022 , H04L1/0034 , H04L5/0035
摘要： A Coordinated MultiPoint (CoMP) cell controller performs network-centric link adaptation for User Equipment (UE) in the CoMP cell. The CoMP cell controller receives at least infrequent channel estimates from a UE in the CoMP cell, from which it estimates downlink channel and thermal noise at the UE. The CoMP cell controller is aware of the desired signal to be received at the UE, and the intra-CoMP cell interference to the UE caused by transmissions to other UEs in the CoMP cell. The CoMP cell receives from the UE reports of inter-CoMP cell interference caused by transmissions by other CoMP cells. Based on the downlink channel quality, the desired signal, the intra-CoMP cell interference, the inter-CoMP cell interference, and the thermal noise, the CoMP cell controller performs link adaptation by selecting modulation and coding schemes, and other transmission parameters, for an upcoming transmission duration (such as a TTI).
摘要翻译：协调多点（CoMP）小区控制器在CoMP小区中为用户设备（UE）执行以网络为中心的链路自适应。 CoMP小区控制器从CoMP小区中的UE接收至少不频繁的信道估计，从UE估计UE处的下行链路信道和热噪声。 CoMP小区控制器知道将在UE处接收的期望信号，以及由CoMP小区中的其他UE的传输引起的对UE的CoMP小区干扰。 CoMP小区从UE接收由其他CoMP小区的传输引起的CoMP间干扰的干扰。基于下行链路信道质量，期望信号，CoMP间小区干扰，CoMP间干扰和热噪声，CoMP小区控制器通过选择调制和编码方案以及其他传输参数来执行链路自适应，用于即将到来的传输持续时间（如TTI）。

6. 发明申请

US20100317355A1 Network-Centric Link Adaptation for Coordinated Multipoint Downlink Transmission 有权
标题翻译：用于协调多点下行链路传输的以网络为中心的链路适配
公开(公告)号：US20100317355A1
公开(公告)日：2010-12-16
申请号：US12483603
申请日：2009-06-12
申请人： Kambiz Zangi , Abdulrauf Hafeez , Dennis Hui
发明人： Kambiz Zangi , Abdulrauf Hafeez , Dennis Hui
IPC分类号： H04B15/00 , H04W72/04
CPC分类号： H04L1/0001 , H04J11/0053 , H04L1/0022 , H04L1/0034 , H04L5/0035
摘要： A Coordinated MultiPoint (CoMP) cell controller performs network-centric link adaptation for User Equipment (UE) in the CoMP cell. The CoMP cell controller receives at least infrequent channel estimates from a UE in the CoMP cell, from which it estimates downlink channel and thermal noise at the UE. The CoMP cell controller is aware of the desired signal to be received at the UE, and the intra-CoMP cell interference to the UE caused by transmissions to other UEs in the CoMP cell. The CoMP cell receives from the UE reports of inter-CoMP cell interference caused by transmissions by other CoMP cells. Based on the downlink channel quality, the desired signal, the intra-CoMP cell interference, the inter-CoMP cell interference, and the thermal noise, the CoMP cell controller performs link adaptation by selecting modulation and coding schemes, and other transmission parameters, for an upcoming transmission duration (such as a TTI).
摘要翻译：协调多点（CoMP）小区控制器在CoMP小区中为用户设备（UE）执行以网络为中心的链路自适应。 CoMP小区控制器从CoMP小区中的UE接收至少不频繁的信道估计，从UE估计UE处的下行链路信道和热噪声。 CoMP小区控制器知道将在UE处接收的期望信号，以及由CoMP小区中的其他UE的传输引起的对UE的CoMP小区干扰。 CoMP小区从UE接收由其他CoMP小区的传输引起的CoMP间干扰的干扰。基于下行链路信道质量，期望信号，CoMP间小区干扰，CoMP间干扰和热噪声，CoMP小区控制器通过选择调制和编码方案以及其他传输参数来执行链路自适应，用于即将到来的传输持续时间（如TTI）。

7. 发明申请

US20100136940A1 SYSTEM AND METHOD OF JOINT SYNCHRONIZATION AND NOISE COVARIANCE ESTIMATION 有权
标题翻译：联合同步和噪声协方差估计的系统与方法
公开(公告)号：US20100136940A1
公开(公告)日：2010-06-03
申请号：US11993507
申请日：2005-06-24
申请人： Dennis Hui , Abdulrauf Hafeez
发明人： Dennis Hui , Abdulrauf Hafeez
IPC分类号： H04B1/10
CPC分类号： H04L25/0204 , H04L7/041 , H04L25/0212 , H04L25/0224 , H04L25/0244 , H04L25/03993
摘要： A system and method in a radio receiver for joint synchronization and noise covariance estimation of a received signal. A spatially and temporally stacked signal model, whereby successive samples of temporally adjacent received signal vectors and corresponding training vectors are stacked, is used in the derivation of the estimation problem. The Toeplitz structure of the channel response matrix is neglected in the formulation of the estimation problem. The resulting estimator jointly estimates a synchronization position, a channel response matrix, and a noise covariance matrix. An estimate of a whitened channel is then computed based on the noise covariance matrix and the estimate of the channel response matrix.
摘要翻译：用于接收信号的联合同步和噪声协方差估计的无线电接收机中的系统和方法。空间和时间叠加的信号模型，其中叠加时间上相邻的接收信号矢量和对应的训练矢量的连续样本，用于推导估计问题。通道响应矩阵的Toeplitz结构在估计问题的描述中被忽略。所得到的估计器共同估计同步位置，信道响应矩阵和噪声协方差矩阵。然后，基于噪声协方差矩阵和信道响应矩阵的估计来计算白化信道的估计。

8. 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。

9. 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。

10. 发明授权

US08000420B2 System and method of joint synchronization and noise covariance estimation 有权
标题翻译：联合同步和噪声协方差估计的系统和方法
公开(公告)号：US08000420B2
公开(公告)日：2011-08-16
申请号：US11993507
申请日：2005-06-24
申请人： Dennis Hui , Abdulrauf Hafeez
发明人： Dennis Hui , Abdulrauf Hafeez
IPC分类号： H03D1/06 , H04B1/10
CPC分类号： H04L25/0204 , H04L7/041 , H04L25/0212 , H04L25/0224 , H04L25/0244 , H04L25/03993
摘要： A system and method in a radio receiver for joint synchronization and noise covariance estimation of a received signal. A spatially and temporally stacked signal model, whereby successive samples of temporally adjacent received signal vectors and corresponding training vectors are stacked, is used in the derivation of the estimation problem. The Toeplitz structure of the channel response matrix is neglected in the formulation of the estimation problem. The resulting estimator jointly estimates a synchronization position, a channel response matrix, and a noise covariance matrix. An estimate of a whitened channel is then computed based on the noise covariance matrix and the estimate of the channel response matrix.
摘要翻译：用于接收信号的联合同步和噪声协方差估计的无线电接收机中的系统和方法。空间和时间叠加的信号模型，其中叠加时间上相邻的接收信号矢量和对应的训练矢量的连续样本，用于推导估计问题。通道响应矩阵的Toeplitz结构在估计问题的描述中被忽略。所得到的估计器共同估计同步位置，信道响应矩阵和噪声协方差矩阵。然后，基于噪声协方差矩阵和信道响应矩阵的估计来计算白化信道的估计。

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