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1. 发明申请

US20090225721A1 HIERARCHICAL PILOT STRUCTURE IN WIRELESS COMMUNICATION SYSTEMS 有权
公开(公告)号：US20090225721A1
公开(公告)日：2009-09-10
申请号：US12367473
申请日：2009-02-06
申请人： MARK C. CUDAK , Amitabha Ghosh , Bishwarup Mondal , Anup K. Talukdar , Timothy A. Thomas , Frederick W. Vook , Fan Wang , Xiangyang Zhuang
发明人： MARK C. CUDAK , Amitabha Ghosh , Bishwarup Mondal , Anup K. Talukdar , Timothy A. Thomas , Frederick W. Vook , Fan Wang , Xiangyang Zhuang
IPC分类号： H04W72/04
CPC分类号： H04L5/0007 , H04L1/06 , H04L5/005 , H04L5/0051 , H04L5/0053 , H04L25/03248
摘要： A method for communicating control channel information in a wireless communication system, including transmitting a super-frame having a time-frequency resource region containing an allocation control channel and multiple pilot elements, at least some of which are associated with the allocation control channel, and indicating, in a configuration information control channel of the super-frame, a characteristic of the pilots elements associated with the allocation control channel.

2. 发明授权

US08537790B2 Hierarchical pilot structure in wireless communication systems 有权
标题翻译：无线通信系统中的分层导频结构
公开(公告)号：US08537790B2
公开(公告)日：2013-09-17
申请号：US12367483
申请日：2009-02-06
申请人： Mark C. Cudak , Timothy A. Thomas , Frederick W. Vook , Anup K. Talukdar , Fan Wang , Bishwarup Mondal
发明人： Mark C. Cudak , Timothy A. Thomas , Frederick W. Vook , Anup K. Talukdar , Fan Wang , Bishwarup Mondal
IPC分类号： H04W4/00
CPC分类号： H04L5/0007 , H04L1/06 , H04L5/005 , H04L5/0051 , H04L5/0053 , H04L25/03248
摘要： A method for communicating control channel information in a wireless communication system, including transmitting a super-frame having a time-frequency resource region containing an allocation control channel and multiple pilot elements, at least some of which are associated with the allocation control channel, and indicating, in a configuration information control channel of the super-frame, a characteristic of the pilots elements associated with the allocation control channel.
摘要翻译：一种用于在无线通信系统中传送控制信道信息的方法，包括发送具有包含分配控制信道的时间 - 频率资源区域和多个导频元素的超帧，其中至少一些与分配控制信道相关联，以及在超帧的配置信息控制信道中指示与分配控制信道相关联的导频元素的特性。

3. 发明申请

US20100260234A1 CLOSED-LOOP TRANSMISSION FEEDBACK IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
标题翻译：无线通信系统中的闭环传输反馈
公开(公告)号：US20100260234A1
公开(公告)日：2010-10-14
申请号：US12421573
申请日：2009-04-09
申请人： Timothy A. Thomas , William J. Hillery , Bishwarup Mondal , Frederick W. Vook , Fan Wang
发明人： Timothy A. Thomas , William J. Hillery , Bishwarup Mondal , Frederick W. Vook , Fan Wang
IPC分类号： H04B1/707
CPC分类号： H04L1/0026 , H04B1/7103 , H04B7/0417 , H04B7/066 , H04B2201/70702 , H04B2201/709709 , H04J13/0003 , H04L1/1607 , H04L5/0053 , H04L5/0057 , H04L25/0206 , H04L25/021 , H04L25/0228 , H04L25/0248 , H04L25/03343 , H04L27/2626 , H04L2025/03414 , H04L2025/03426 , H04L2025/03808 , H04L2025/03815
摘要： Channel information feedback takes place by calculating channel information to feed back to the base station. The channel quality information is spread by a remote unit with spreading codes from mutually unbiased bases and transmitted to the base station. The advantages of spreading the feedback channel are that multiple mobiles can send their feedback on the same time-frequency resources making the feedback very efficient and also improving feedback performance through orthogonal spreading which gives a spreading gain above noise and interference. Using the spreading codes from mutually unbiased bases can reduce interference across sectors.
摘要翻译：信道信息反馈通过计算信道信息反馈给基站进行。信道质量信息由具有来自相互无偏置的基站的扩展码的远程单元传播并被发送到基站。扩展反馈信道的优点是，多个移动台可以在相同的时间 - 频率资源上发送其反馈，从而使得该反馈非常有效，并且还通过正交扩频来提高反馈性能，其给出高于噪声和干扰的扩频增益。使用来自相互无偏的基地的扩展码可以减少扇区之间的干扰。

4. 发明授权

US07426198B2 Method and apparatus for performing spatial-division multiple access 有权
标题翻译：用于执行空分多址的方法和装置
公开(公告)号：US07426198B2
公开(公告)日：2008-09-16
申请号：US11275938
申请日：2006-02-06
申请人： Bishwarup Mondal , Xiangyang Zhuang , Kevin L. Baum , Timothy A. Thomas , Frederick W. Vook
发明人： Bishwarup Mondal , Xiangyang Zhuang , Kevin L. Baum , Timothy A. Thomas , Frederick W. Vook
IPC分类号： H04Q7/00
CPC分类号： H04B7/0617 , H04B7/0452 , H04B7/0634 , H04B7/0639 , Y02D70/444
摘要： A method and apparatus for performing spatial-division multiple access within a communication system is provided herein. During operation, nodes will return null subspace information along with their channel subspace information. The null subspace is similar to the channel subspace except that the null subspace information directs a base station to the matrix in a predefined codebook that results in minimum power being received at the node. The null subspace for each node is taken into consideration when communicating with a particular node.
摘要翻译：本文提供了一种在通信系统内执行空分多址的方法和装置。在运行期间，节点将返回空子空间信息及其信道子空间信息。空子空间类似于信道子空间，除了空子信息将基站指向预定义码本中的矩阵，导致在该节点处接收的最小功率。当与特定节点进行通信时，将考虑每个节点的空子空间。

5. 发明授权

US08000293B2 Method and apparatus for performing spatial-division multiple access 有权
标题翻译：用于执行空分多址的方法和装置
公开(公告)号：US08000293B2
公开(公告)日：2011-08-16
申请号：US12192164
申请日：2008-08-15
申请人： Bishwarup Mondal , Xiangyang Zhuang , Kevin L. Baum , Timothy A. Thomas , Frederick W. Vook
发明人： Bishwarup Mondal , Xiangyang Zhuang , Kevin L. Baum , Timothy A. Thomas , Frederick W. Vook
IPC分类号： H04W4/00
CPC分类号： H04B7/0617 , H04B7/0452 , H04B7/0634 , H04B7/0639 , Y02D70/444
摘要： A method and apparatus for performing spatial-division multiple access within a communication system is provided herein. During operation, nodes will return null subspace information along with their channel subspace information. The null subspace is similar to the channel subspace except that the null subspace information directs a base station to the matrix in a predefined codebook that results in minimum power being received at the node. The null subspace for each node is taken into consideration when communicating with a particular node.
摘要翻译：本文提供了一种在通信系统内执行空分多址的方法和装置。在运行期间，节点将返回空子空间信息及其信道子空间信息。空子空间类似于信道子空间，除了空子信息将基站指向预定义码本中的矩阵，导致在该节点处接收的最小功率。当与特定节点进行通信时，将考虑每个节点的空子空间。

6. 发明授权

US08509705B2 Differential closed-loop transmission feedback in wireless communication systems 有权
标题翻译：无线通信系统中的差分闭环传输反馈
公开(公告)号：US08509705B2
公开(公告)日：2013-08-13
申请号：US12872085
申请日：2010-08-31
申请人： Timothy A. Thomas , Bishwarup Mondal , Eugene Visotsky , Frederick W. Vook
发明人： Timothy A. Thomas , Bishwarup Mondal , Eugene Visotsky , Frederick W. Vook
IPC分类号： H04B1/00
CPC分类号： H04L27/2601 , H04B7/0617 , H04B7/0623 , H04B7/0641 , H04L25/0242 , H04L25/03006 , H04L25/03343 , H04L2025/03426
摘要： A method and apparatus for providing channel feedback is provided herein. During operation a covariance matrix at time t (R) is calculated as a function of a received downlink signal. Matrix Ct is also calculated and is based on a previous quantized covariance matrix (Rqt-1), the covariance matrix (R) at time t, and a forgetting factor (γ) that is applied to Rqt-1. The Ct is then used to create a DERC feedback message (signal or waveform) and may be transmitted with pilots on a proper feedback channel to a base unit. The base unit receives the feedback (Ct) as a DERC waveform on a proper feedback channel. The base unit uses non-coherent or coherent detection to detect the DERC values send by the remote unit and uses the DERC values with a previous quantized covariance matrix estimate, a forgetting factor, and a weighting value to compute a covariance matrix estimate to use for beamforming. The base unit then uses the covariance matrix estimate to determine appropriate channel beamforming weights, and instructs transmit beamforming circuitry to use the appropriate weights.
摘要翻译：本文提供了一种用于提供信道反馈的方法和装置。在运行期间，计算时间t（R）处的协方差矩阵作为接收的下行链路信号的函数。还计算矩阵Ct，并且基于先前的量化协方差矩阵（Rqt-1），时间t的协方差矩阵（R）和应用于Rqt-1的遗忘因子（γ）。然后，Ct用于创建DERC反馈消息（信号或波形），并且可以在适当的反馈信道上的导频发送到基本单元。基本单元在适当的反馈通道上接收反馈（Ct）作为DERC波形。基本单元使用非相干或相干检测来检测远程单元发送的DERC值，并且使用具有先前的量化协方差矩阵估计，遗忘因子和加权值的DERC值来计算协方差矩阵估计，以用于波束成形。基本单元然后使用协方差矩阵估计来确定适当的信道波束成形权重，并且指示发送波束成形电路使用适当的权重。

7. 发明授权

US07778343B2 Method and apparatus for finite impulse response cyclic-shift diversity 有权
标题翻译：有限脉冲响应循环移位分集的方法和装置
公开(公告)号：US07778343B2
公开(公告)日：2010-08-17
申请号：US11627563
申请日：2007-01-26
申请人： William J. Hillery , Thomas P. Krauss , Bishwarup Mondal , Timothy A. Thomas , Frederick W. Vook
发明人： William J. Hillery , Thomas P. Krauss , Bishwarup Mondal , Timothy A. Thomas , Frederick W. Vook
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04L5/0007 , H04B7/0671
摘要： A generalized form of cyclic shift diversity is described for use in an OFDM system with multiple transmit antennas. Multiple cyclic shifts are performed for each transmit antenna and the shifted signals are scaled and summed to form a time-domain data stream for each transmit antenna. A cyclic extension is added to each data stream prior to transmission.
摘要翻译：描述了在具有多个发射天线的OFDM系统中使用的循环移位分集的通用形式。对于每个发射天线执行多个循环移位，并且移位的信号被缩放和相加以形成每个发射天线的时域数据流。在传输之前，将循环扩展添加到每个数据流。

8. 发明申请

US20080305805A1 METHOD AND APPARATUS FOR PERFORMING SPATIAL-DIVISION MULTIPLE ACCESS 有权
标题翻译：用于执行空间分割多路访问的方法和装置
公开(公告)号：US20080305805A1
公开(公告)日：2008-12-11
申请号：US12192164
申请日：2008-08-15
申请人： Bishwarup Mondal , Xiangyang Zhuang , Kevin L. Baum, , Timothy A. Thomas , Frederick W. Vook
发明人： Bishwarup Mondal , Xiangyang Zhuang , Kevin L. Baum, , Timothy A. Thomas , Frederick W. Vook
IPC分类号： H04Q7/20 , H04M1/00
CPC分类号： H04B7/0617 , H04B7/0452 , H04B7/0634 , H04B7/0639 , Y02D70/444
摘要： A method and apparatus for performing spatial-division multiple access within a communication system is provided herein. During operation, nodes will return null subspace information along with their channel subspace information. The null subspace is similar to the channel subspace except that the null subspace information directs a base station to the matrix in a predefined codebook that results in minimum power being received at the node. The null subspace for each node is taken into consideration when communicating with a particular node.
摘要翻译：本文提供了一种在通信系统内执行空分多址的方法和装置。在运行期间，节点将返回空子空间信息及其信道子空间信息。空子空间类似于信道子空间，除了空子信息将基站指向预定义码本中的矩阵，导致在该节点处接收的最小功率。当与特定节点进行通信时，将考虑每个节点的空子空间。

9. 发明申请

US20110105051A1 DIFFERENTIAL CLOSED-LOOP TRANSMISSION FEEDBACK IN WIRELESS COMMUNICATION SYSTEMS 有权
标题翻译：无线通信系统中的差分闭环传输反馈
公开(公告)号：US20110105051A1
公开(公告)日：2011-05-05
申请号：US12872085
申请日：2010-08-31
申请人： Timothy A. Thomas , Bishwarup Mondal , Eugene Visotsky , Frederick W. Vook
发明人： Timothy A. Thomas , Bishwarup Mondal , Eugene Visotsky , Frederick W. Vook
IPC分类号： H04B7/005
CPC分类号： H04L27/2601 , H04B7/0617 , H04B7/0623 , H04B7/0641 , H04L25/0242 , H04L25/03006 , H04L25/03343 , H04L2025/03426
摘要： A method and apparatus for providing channel feedback is provided herein. During operation a covariance matrix at time t (R) is calculated as a function of a received downlink signal. Matrix Ct is also calculated and is based on a previous quantized covariance matrix (Rqt-1), the covariance matrix (R) at time t, and a forgetting factor (γ) that is applied to Rqt-1. The Ct is then used to create a DERC feedback message (signal or waveform) and may be transmitted with pilots on a proper feedback channel to a base unit. The base unit receives the feedback (Ct) as a DERC waveform on a proper feedback channel. The base unit uses non-coherent or coherent detection to detect the DERC values send by the remote unit and uses the DERC values with a previous quantized covariance matrix estimate, a forgetting factor, and a weighting value to compute a covariance matrix estimate to use for beamforming. The base unit then uses the covariance matrix estimate to determine appropriate channel beamforming weights, and instructs transmit beamforming circuitry to use the appropriate weights.
摘要翻译：本文提供了一种用于提供信道反馈的方法和装置。在运行期间，计算时间t（R）处的协方差矩阵作为接收的下行链路信号的函数。还计算矩阵Ct，并且基于先前的量化协方差矩阵（Rqt-1），时间t的协方差矩阵（R）和应用于Rqt-1的遗忘因子（γ）。然后，Ct用于创建DERC反馈消息（信号或波形），并且可以在适当的反馈信道上的导频发送到基本单元。基本单元在适当的反馈通道上接收反馈（Ct）作为DERC波形。基本单元使用非相干或相干检测来检测远程单元发送的DERC值，并且使用具有先前的量化协方差矩阵估计，遗忘因子和加权值的DERC值来计算协方差矩阵估计，以用于波束成形。基本单元然后使用协方差矩阵估计来确定适当的信道波束成形权重，并且指示发送波束成形电路使用适当的权重。

10. 发明申请

US20080181191A1 METHOD AND APPARATUS FOR FINITE IMPULSE RESPONSE CYCLIC-SHIFT DIVERSITY 有权
标题翻译：有意义的反应循环移位多样性的方法和装置
公开(公告)号：US20080181191A1
公开(公告)日：2008-07-31
申请号：US11627563
申请日：2007-01-26
申请人： William J. Hillery , Thomas P. Krauss , Bishwarup Mondal , Timothy A. Thomas , Frederick W. Vook
发明人： William J. Hillery , Thomas P. Krauss , Bishwarup Mondal , Timothy A. Thomas , Frederick W. Vook
IPC分类号： H04H1/00
CPC分类号： H04L5/0007 , H04B7/0671
摘要： A generalized form of cyclic shift diversity is described for use in an OFDM system with multiple transmit antennas. Multiple cyclic shifts are performed for each transmit antenna and the shifted signals are scaled and summed to form a time-domain data stream for each transmit antenna. A cyclic extension is added to each data stream prior to transmission.
摘要翻译：描述了在具有多个发射天线的OFDM系统中使用的循环移位分集的通用形式。对于每个发射天线执行多个循环移位，并且移位的信号被缩放和相加以形成每个发射天线的时域数据流。在传输之前，将循环扩展添加到每个数据流。

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