公开(公告)号：US08934930B2

公开(公告)日：2015-01-13

申请号：US13283003

申请日：2011-10-27

申请人： Jiann-Ching Guey ,  Dennis Hui

发明人： Jiann-Ching Guey ,  Dennis Hui

IPC分类号： H04B7/00 ,  H04W24/02 ,  H04W24/04 ,  H04W92/24 ,  H04L12/911 ,  H04W92/20

CPC分类号： H04W24/02 ,  H04L47/822 ,  H04W24/04 ,  H04W92/20 ,  H04W92/24

摘要： A distributed parameter update procedure is provided for updating parameters that do not have discrete values. When a parameter value is changed, a search is conducted of a parameter space to find a new parameter value minimizes some cost function. The cost function is derived based on the current parameter settings in neighboring nodes. The distributed parameter update procedure may simplify the search process by localizing the search of the parameter space for a new parameter value to the vicinity of the current parameter setting. In some embodiments, the search is conducted along a line of steepest descent emanating from the current parameter setting.

摘要翻译： 提供了分布式参数更新过程，用于更新不具有离散值的参数。 当一个参数值被改变时，进行一个参数空间的搜索以找到一个新的参数值，最小化一些成本函数。 成本函数是根据相邻节点中的当前参数设置得出的。 分布式参数更新过程可以通过将新参数值的参数空间的搜索定位到当前参数设置的附近来简化搜索过程。 在一些实施例中，沿着从当前参数设置发出的最速下降线进行搜索。

公开(公告)号：US08849207B2

公开(公告)日：2014-09-30

申请号：US13237325

申请日：2011-09-20

申请人： Jiann-Ching Guey ,  Dennis Hui

发明人： Jiann-Ching Guey ,  Dennis Hui

IPC分类号： H04B15/00 ,  H04W24/02 ,  H04W92/20 ,  H04W72/04

CPC分类号： H04W24/02 ,  H04W72/0406 ,  H04W92/20

摘要： A system comprises a communication device that chooses a parameter setting from a set of available parameter settings. The system may include multiple communication devices, and each available parameter setting may have an associated cost. The communication device may receive parameter setting information from one or more other communication devices in the system, and the parameter setting information may identify the parameter setting being used by the one or more communication devices in the system. The communication device may choose a parameter setting that is associated with the lowest cost based on the parameter setting information received from the one or more other communication devices in the system.

摘要翻译： 系统包括从一组可用参数设置中选择参数设置的通信设备。 系统可以包括多个通信设备，并且每个可用的参数设置可以具有相关联的成本。 通信设备可以从系统中的一个或多个其他通信设备接收参数设置信息，并且参数设置信息可以标识系统中一个或多个通信设备使用的参数设置。 通信设备可以基于从系统中的一个或多个其他通信设备接收的参数设置信息来选择与最低成本相关联的参数设置。

公开(公告)号：US20130114468A1

公开(公告)日：2013-05-09

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： H04B7/00

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。

公开(公告)号：US08879428B2

公开(公告)日：2014-11-04

申请号：US13308776

申请日：2011-12-01

申请人： Dennis Hui ,  Jiann-Ching Guey

发明人： Dennis Hui ,  Jiann-Ching Guey

IPC分类号： H04L12/28

CPC分类号： H04L43/04 ,  H04L41/0823 ,  H04W16/02 ,  H04W24/02

摘要： Systems and method are disclosed for graph-based distributed parameter coordination in a communication network. In general, discrete local parameters to be coordinated among communication nodes in the network and their respective performance metrics, or costs, are modeled using a factor graph. Based on the factor graph, a variant of the sum-product algorithm, namely the min-sum algorithm, is applied in order for the communication nodes, through iterative message passing with their neighboring communication nodes, to decide upon optimal values for the local parameters for the communication nodes that collectively optimize a global performance metric across the communication network. In one embodiment, the communication network is a wireless communication network. In one specific embodiment, the wireless communication network is a cellular communication network.

摘要翻译： 公开了用于通信网络中基于图的分布式参数协调的系统和方法。 通常，使用因子图来建模要在网络中的通信节点之间协调的离散局部参数及其各自的性能度量或成本。 基于因子图，应用和积算法的一个变体，即最小和算法，以便通信节点通过与其相邻通信节点的迭代消息传递来决定本地参数的最优值 对于通过通信网络共同优化全局性能度量的通信节点。 在一个实施例中，通信网络是无线通信网络。 在一个具体实施例中，无线通信网络是蜂窝通信网络。

公开(公告)号：US08837621B2

公开(公告)日：2014-09-16

申请号：US13342688

申请日：2012-01-03

申请人： Jiann-Ching Guey ,  Kumar Balachandran ,  Dennis Hui

发明人： Jiann-Ching Guey ,  Kumar Balachandran ,  Dennis Hui

IPC分类号： H04B7/02 ,  H04L25/02 ,  H04L5/00 ,  H04B7/06 ,  H04L25/03

CPC分类号： H04B7/0413 ,  H04B7/0626 ,  H04B7/0691 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0232 ,  H04L2025/03808

摘要： A transmitter, receiver, and method for channel estimation for a Multiple-Input Multiple-Output (MIMO) communication system in which the transmitter includes a multiplicity of transmit antennas spaced such that spacing between adjacent antennas provides a spatial correlation coefficient greater than a threshold level. The transmitter selects a subset of the multiplicity of transmit antennas for transmitting the pilot reference signals. The pilot reference signals are transmitted only from the selected subset of transmit antennas to the receiver. The receiver includes a channel estimator configured to derive a channel estimation for all of the multiplicity of transmit antennas using the received pilot reference signals and known or estimated spatial correlation among the multiplicity of transmit antennas.

摘要翻译： 一种用于多输入多输出（MIMO）通信系统的信道估计的发射机，接收机和方法，其中所述发射机包括多个发射天线，所述多个发射天线间隔开，使得相邻天线之间的间隔提供大于阈值水平的空间相关系数 。 发射机选择用于发射导频参考信号的多个发射天线的子集。 导频参考信号仅从选定的发射天线子集发射到接收机。 接收机包括信道估计器，其被配置为使用所接收的导频参考信号和多个发射天线之间的已知或估计的空间相关性来导出所有多个发射天线的信道估计。

公开(公告)号：US08526407B2

公开(公告)日：2013-09-03

申请号：US12465864

申请日：2009-05-14

申请人： Kambiz Zangi ,  Jiann-Ching Guey ,  Dennis Hui

发明人： Kambiz Zangi ,  Jiann-Ching Guey ,  Dennis Hui

IPC分类号： H04W4/00

CPC分类号： H04W72/1231 ,  H04B7/024 ,  H04L5/0066 ,  H04L5/0091

摘要： Inter-CoMP cell interference is reduced by “extending” at least one CoMP cell to include UEs served by a neighboring CoMP cell in the extended CoMP cell's transmission calculations, so as to minimize interference to the UEs served by other CoMP cells. Each UE in a border sub-cell identifies neighboring CoMP cells from which it receives interference in excess of a threshold value, and includes the interfering CoMP cells in a close-neighbor set. The close-neighbor set is transmitted to the UE's serving CoMP cell controller. When downlink transmissions are scheduled to the target UE, the controller notifies the neighboring CoMP cells in the close-neighbor set, identifying the target UE. Those CoMP cells then use information about the channel conditions from their transmit antennas to the target UE receive antennas to compute transmissions to UEs they serve, with the constraint that interference to the target UE is below a predetermined level.

摘要翻译： 通过在扩展的CoMP小区的传输计算中“延伸”至少一个CoMP小区以包括由相邻CoMP小区服务的UE来减少CoMP间小区干扰，以便最小化对由其他CoMP小区服务的UE的干扰。 边界子小区中的每个UE识别出相邻的CoMP小区，其接收到超过阈值的干扰，并且包括邻近组中的干扰CoMP小区。 近邻集合被发送到UE的服务CoMP小区控制器。 当向目标UE调度下行链路传输时，控制器通知近邻集中的相邻CoMP小区，识别目标UE。 那些CoMP小区然后使用关于从其发射天线到目标UE接收天线的信道条件的信息来计算对它们所服务的UE的传输，其限制是对目标UE的干扰低于预定水平。

公开(公告)号：US20130109421A1

公开(公告)日：2013-05-02

申请号：US13283003

申请日：2011-10-27

申请人： Jiann-Ching Guey ,  Dennis Hui

发明人： Jiann-Ching Guey ,  Dennis Hui

IPC分类号： H04W16/18

CPC分类号： H04W24/02 ,  H04L47/822 ,  H04W24/04 ,  H04W92/20 ,  H04W92/24

摘要： A distributed parameter update procedure is provided for updating parameters that do not have discrete values. When a parameter value is changed, a search is conducted of a parameter space to find a new parameter value minimizes some cost function. The cost function is derived based on the current parameter settings in neighboring nodes. The distributed parameter update procedure may simplify the search process by localizing the search of the parameter space for a new parameter value to the vicinity of the current parameter setting. In some embodiments, the search is conducted along a line of steepest descent emanating from the current parameter setting.

摘要翻译： 提供了分布式参数更新过程，用于更新不具有离散值的参数。 当一个参数值被改变时，进行一个参数空间的搜索以找到一个新的参数值，最小化一些成本函数。 成本函数是根据相邻节点中的当前参数设置得出的。 分布式参数更新过程可以通过将新参数值的参数空间的搜索定位到当前参数设置的附近来简化搜索过程。 在一些实施例中，沿着从当前参数设置发出的最速下降线进行搜索。

公开(公告)号：US20120288022A1

公开(公告)日：2012-11-15

申请号：US13342688

申请日：2012-01-03

申请人： Jiann-Ching Guey ,  Kumar Balachandran ,  Dennis Hui

发明人： Jiann-Ching Guey ,  Kumar Balachandran ,  Dennis Hui

IPC分类号： H04B15/00 ,  H04L27/28

CPC分类号： H04B7/0413 ,  H04B7/0626 ,  H04B7/0691 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0232 ,  H04L2025/03808

摘要： A transmitter, receiver, and method for channel estimation for a Multiple-Input Multiple-Output (MIMO) communication system in which the transmitter includes a multiplicity of transmit antennas spaced such that spacing between adjacent antennas provides a spatial correlation coefficient greater than a threshold level. The transmitter selects a subset of the multiplicity of transmit antennas for transmitting the pilot reference signals. The pilot reference signals are transmitted only from the selected subset of transmit antennas to the receiver. The receiver includes a channel estimator configured to derive a channel estimation for all of the multiplicity of transmit antennas using the received pilot reference signals and known or estimated spatial correlation among the multiplicity of transmit antennas.

摘要翻译： 一种用于多输入多输出（MIMO）通信系统的信道估计的发射机，接收机和方法，其中所述发射机包括多个发射天线，所述多个发射天线间隔开，使得相邻天线之间的间隔提供大于阈值水平的空间相关系数 。 发射机选择用于发射导频参考信号的多个发射天线的子集。 导频参考信号仅从选定的发射天线子集发射到接收机。 接收机包括信道估计器，其被配置为使用所接收的导频参考信号和多个发射天线之间的已知或估计的空间相关性来导出所有多个发射天线的信道估计。

公开(公告)号：US20100291936A1

公开(公告)日：2010-11-18

申请号：US12465864

申请日：2009-05-14

申请人： Kambiz Zangi ,  Jiann-Ching Guey ,  Dennis Hui

发明人： Kambiz Zangi ,  Jiann-Ching Guey ,  Dennis Hui

IPC分类号： H04W72/00 ,  H04B7/00

CPC分类号： H04W72/1231 ,  H04B7/024 ,  H04L5/0066 ,  H04L5/0091

摘要： Inter-CoMP cell interference is reduced by “extending” at least one CoMP cell to include UEs served by a neighboring CoMP cell in the extended CoMP cell's transmission calculations, so as to minimize interference to the UEs served by other CoMP cells. Each UE in a border sub-cell identifies neighboring CoMP cells from which it receives interference in excess of a threshold value, and includes the interfering CoMP cells in a close-neighbor set. The close-neighbor set is transmitted to the UE's serving CoMP cell controller. When downlink transmissions are scheduled to the target UE, the controller notifies the neighboring CoMP cells in the close-neighbor set, identifying the target UE. Those CoMP cells then use information about the channel conditions from their transmit antennas to the target UE receive antennas to compute transmissions to UEs they serve, with the constraint that interference to the target UE is below a predetermined level.

摘要翻译： 通过在扩展的CoMP小区的传输计算中“延伸”至少一个CoMP小区以包括由相邻CoMP小区服务的UE来减少CoMP间小区干扰，以便最小化对由其他CoMP小区服务的UE的干扰。 边界子小区中的每个UE识别出相邻的CoMP小区，其接收到超过阈值的干扰，并且包括邻近组中的干扰CoMP小区。 近邻集合被发送到UE的服务CoMP小区控制器。 当向目标UE调度下行链路传输时，控制器通知近邻集中的相邻CoMP小区，识别目标UE。 那些CoMP小区然后使用关于从其发射天线到目标UE接收天线的信道条件的信息来计算对它们所服务的UE的传输，其限制是对目标UE的干扰低于预定水平。

公开(公告)号：US09036684B2

公开(公告)日：2015-05-19

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： H04B1/38 ,  H04B7/04 ,  H04B7/06 ,  H04L25/02 ,  H04L5/00 ,  H04L25/03

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。