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1.发明申请SYSTEMS AND METHODS TO COORDINATE TRANSMISSIONS IN DISTRIBUTED WIRELESS SYSTEMS VIA USER CLUSTERING 有权通过用户集群在分布式无线系统中协调传输的系统和方法公开(公告)号：US20140016499A1
公开(公告)日：2014-01-16
申请号：US14023302
申请日：2013-09-10
IPC分类号： H04W24/02
CPC分类号： H04B7/0456 , H04B7/024 , H04B7/0434 , H04B7/0452 , H04B7/0626 , H04W24/02 , H04W24/08
摘要： Systems and methods are described for coordinating transmissions in distributed wireless systems via user clustering. For example, a method according to one embodiment of the invention comprises: measuring link quality between a target user and a plurality of distributed-input distributed-output (DIDO) distributed antennas of base transceiver stations (BTSs); using the link quality measurements to define a user cluster; measuring channel state information (CSI) between each user and each DIDO antenna within a defined user cluster; and precoding data transmissions between each DIDO antenna and each user within the user cluster based on the measured CSI.
摘要翻译： 描述了用于通过用户群集协调分布式无线系统中的传输的系统和方法。 例如，根据本发明的一个实施例的方法包括：测量目标用户与基站收发台（BTS）的多个分布式输入分布式输出（DIDO）分布式天线之间的链路质量; 使用链路质量测量来定义用户群集; 在定义的用户群内测量每个用户与每个DIDO天线之间的信道状态信息（CSI）; 以及基于所测量的CSI，在每个DIDO天线和用户群内的每个用户之间预编码数据传输。
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2.发明申请SYSTEMS AND METHODS TO COORDINATE TRANSMISSIONS IN DISTRIBUTED WIRELESS SYSTEMS VIA USER CLUSTERING 有权通过用户集群在分布式无线系统中协调传输的系统和方法公开(公告)号：US20110044193A1
公开(公告)日：2011-02-24
申请号：US12917257
申请日：2010-11-01
IPC分类号： H04L12/26
CPC分类号： H04B7/0456 , H04B7/024 , H04B7/0434 , H04B7/0452 , H04B7/0626 , H04W24/02 , H04W24/08
摘要： Systems and methods are described for coordinating transmissions in distributed wireless systems via user clustering. For example, a method according to one embodiment of the invention comprises: measuring link quality between a target user and a plurality of distributed-input distributed-output (DIDO) distributed antennas of base transceiver stations (BTSs); using the link quality measurements to define a user cluster; measuring channel state information (CSI) between each user and each DIDO antenna within a defined user cluster; and precoding data transmissions between each DIDO antenna and each user within the user cluster based on the measured CSI.
摘要翻译： 描述了用于通过用户群集协调分布式无线系统中的传输的系统和方法。 例如，根据本发明的一个实施例的方法包括：测量目标用户与基站收发台（BTS）的多个分布式输入分布式输出（DIDO）分布式天线之间的链路质量; 使用链路质量测量来定义用户群集; 在定义的用户群内测量每个用户与每个DIDO天线之间的信道状态信息（CSI）; 以及基于所测量的CSI，在每个DIDO天线和用户群内的每个用户之间预编码数据传输。
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3.发明授权Systems and methods to coordinate transmissions in distributed wireless systems via user clustering 有权通过用户群集协调分布式无线系统中的传输的系统和方法公开(公告)号：US08542763B2
公开(公告)日：2013-09-24
申请号：US12917257
申请日：2010-11-01
IPC分类号： H04B7/02
CPC分类号： H04B7/0456 , H04B7/024 , H04B7/0434 , H04B7/0452 , H04B7/0626 , H04W24/02 , H04W24/08
摘要： Systems and methods are described for coordinating transmissions in distributed wireless systems via user clustering. For example, a method according to one embodiment of the invention comprises: measuring link quality between a target user and a plurality of distributed-input distributed-output (DIDO) distributed antennas of base transceiver stations (BTSs); using the link quality measurements to define a user cluster; measuring channel state information (CSI) between each user and each DIDO antenna within a defined user cluster; and precoding data transmissions between each DIDO antenna and each user within the user cluster based on the measured CSI.
摘要翻译： 描述了用于通过用户群集协调分布式无线系统中的传输的系统和方法。 例如，根据本发明的一个实施例的方法包括：测量目标用户与基站收发台（BTS）的多个分布式输入分布式输出（DIDO）分布式天线之间的链路质量; 使用链路质量测量来定义用户群集; 在定义的用户群内测量每个用户与每个DIDO天线之间的信道状态信息（CSI）; 以及基于所测量的CSI，在每个DIDO天线和用户群内的每个用户之间预编码数据传输。
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公开(公告)号：US20060008025A1
公开(公告)日：2006-01-12
申请号：US11175430
申请日：2005-07-05
IPC分类号： H04B7/02
CPC分类号： H04L1/0625 , H04L1/0071 , H04L1/0643
摘要： The invention relates generally to the field of signal encoding in a multiple input multiple output system in a wireless communication network. This invention specifically relates to a method of encoding and transmitting symbols in a rate-2 complex symbol per second per Hertz transmission system that achieves a maximum diversity of four for a four transmit antenna system and a diversity of three on a three transmit antenna system. The invention discloses a method of interleaving the complex symbols such that each interleaved symbol comprises information of at least two complex symbols where the complex symbols obtain values from a rotated constellation.
摘要翻译： 本发明一般涉及无线通信网络中的多输入多输出系统中的信号编码领域。 本发明具体涉及以每Hertz传输系统每秒速率2复数符号编码和传输符号的方法，其对于四个发射天线系统实现四个最大分集，三个发射天线系统实现三分之一。 本发明公开了一种对复数符号进行交织的方法，使得每个交错符号包括复数符号从旋转星座获得值的至少两个复符号的信息。
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公开(公告)号：US20060182196A1
公开(公告)日：2006-08-17
申请号：US11355293
申请日：2006-02-14
申请人： Vummintala Shashidhar , Vara Prasad , Ozgur Oyman , Erik Lindskog , Robert Lorenz , Kamlesh Rath
发明人： Vummintala Shashidhar , Vara Prasad , Ozgur Oyman , Erik Lindskog , Robert Lorenz , Kamlesh Rath
IPC分类号： H04B7/02
CPC分类号： H04B7/0669 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0618 , H04L25/0204 , H04L25/0246 , H04L25/0248
摘要： Systems and methods for optimizing transmission of a plurality of data streams on a multiple-input multiple-output channel are described. The systems and methods for optimizing reduce the multiple-input multiple-output channel for each transmission scheme to an equivalent single-input single-output channel for the transmission scheme and transmit the plurality of data streams based on the single-input single-output channel for the transmission scheme. Systems and methods for optimizing the transfer of data for any number of transmit and receive antennas are described.
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公开(公告)号：US20060040672A1
公开(公告)日：2006-02-23
申请号：US11254599
申请日：2005-10-19
申请人： Sarah Wilson , Todd Chauvin , Adam Kerr , Christopher Brunner , Mitchell Trott , Athanasios Kapasi , Erik Lindskog
发明人： Sarah Wilson , Todd Chauvin , Adam Kerr , Christopher Brunner , Mitchell Trott , Athanasios Kapasi , Erik Lindskog
IPC分类号： H04Q7/20
摘要： A system and related methods for clustering multi-point communication targets is presented. According to one aspect of the invention, a method comprising measuring one or more performance characteristics associated for each of at least a subset of a plurality of targets in a wireless communication system, and selectively building one or more clusters, each cluster including one or more target(s) and sharing a wireless communication channel, based at least in part on the performance characteristics.
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公开(公告)号：US07545876B2
公开(公告)日：2009-06-09
申请号：US11355293
申请日：2006-02-14
申请人： Vummintala Shashidhar , Vara J. Prasad , Ozgur Oyman , Erik Lindskog , Robert Lorenz , Kamlesh Rath
发明人： Vummintala Shashidhar , Vara J. Prasad , Ozgur Oyman , Erik Lindskog , Robert Lorenz , Kamlesh Rath
IPC分类号： H04B7/02
CPC分类号： H04B7/0669 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0618 , H04L25/0204 , H04L25/0246 , H04L25/0248
摘要： Systems and methods for optimizing transmission of a plurality of data streams on a multiple-input multiple-output channel are described. The systems and methods for optimizing reduce the multiple-input multiple-output channel for each transmission scheme to an equivalent single-input single-output channel for the transmission scheme and transmit the plurality of data streams based on the single-input single-output channel for the transmission scheme. Systems and methods for optimizing the transfer of data for any number of transmit and receive antennas are described.
摘要翻译： 描述了用于优化多输入多输出通道上的多个数据流的传输的系统和方法。 用于优化的系统和方法将用于每个传输方案的多输入多输出信道减少到用于传输方案的等效单输入单输出信道，并且基于单输入单输出信道来发送多个数据流 用于传输方案。 描述用于优化任何数量的发射和接收天线的数据传输的系统和方法。
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8.发明申请Methods and systems for estimating temporal correlation of a propagation channel 有权用于估计传播信道的时间相关性的方法和系统公开(公告)号：US20080123544A1
公开(公告)日：2008-05-29
申请号：US11821287
申请日：2007-06-22
申请人： Djordje Tujkovic , David Garrett , Ying Xia , Erik Lindskog , Brett Schein , J. Varaprasad
发明人： Djordje Tujkovic , David Garrett , Ying Xia , Erik Lindskog , Brett Schein , J. Varaprasad
IPC分类号： H04L12/26
摘要： Methods and systems for estimating Temporal Correlation (TC) of a propagation channel are provided. In an embodiment, a method for estimating the TC of the propagation channel comprises obtaining multiple channel quality reports of the propagation channel and estimating the TC of the propagation channel based on the multiple channel quality reports.
摘要翻译： 提供了用于估计传播信道的时间相关（TC）的方法和系统。 在一个实施例中，用于估计传播信道的TC的方法包括基于多个信道质量报告获得传播信道的多个信道质量报告和估计传播信道的TC。
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9.发明申请Selecting modulation and coding level and spatial rate for orthogonal frequency domain modulation systems 有权选择正交频域调制系统的调制和编码级别和空间速率公开(公告)号：US20070183529A1
公开(公告)日：2007-08-09
申请号：US11701072
申请日：2007-01-31
IPC分类号： H04L1/02
CPC分类号： H04B7/0413 , H04L1/0003 , H04L1/0009 , H04L27/2626
摘要： Embodiments are directed to a link adaptation method that selects the optimum transmission scheme and modulation and coding signal (MCS) level within a MIMO system, based on optimal maximum throughput on the channels. The method selects the MCS levels and spatial rate values for broadband communication systems based on the instantaneous broadband MIMO-OFDM signaling capacities. The transmission rate over the transmission channel is selected based on a comparison of the capacities achieved under diversity coding and spatial multiplexing MIMO transmission schemes. The effect of a particular receiver type or implementation can also be factored into the signaling capacity. For a fixed target probability of error, the scheme or spatial rate that has the higher instantaneous throughput is selected for transmission.
摘要翻译： 实施例涉及一种基于信道上的最佳最大吞吐量来选择MIMO系统内的最佳传输方案和调制和编码信号（MCS）级别的链路自适应方法。 该方法基于瞬时宽带MIMO-OFDM信令容量选择宽带通信系统的MCS级别和空间速率值。 基于在分集编码和空间复用MIMO传输方案下实现的容量的比较来选择传输信道上的传输速率。 特定接收机类型或实现的效果也可以被认为是信令容量。 对于固定的目标误差概率，选择具有较高瞬时吞吐量的方案或空间速率进行传输。
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10.发明申请Time-reversal block transmit diversity system for channels with intersymbol interference and method 失效具有符号间干扰和方法的信道的时间反向块发射分集系统公开(公告)号：US20060115031A1
公开(公告)日：2006-06-01
申请号：US11330949
申请日：2006-01-11
申请人： Erik Lindskog , Arogyaswami Paulraj
发明人： Erik Lindskog , Arogyaswami Paulraj
IPC分类号： H04B1/10
CPC分类号： H04B7/0669 , H04L1/0618
摘要： A method for diversity transmission and reception for channels with intersymbol interference is created. With this method one can transmit from two or more antennas in such a way that a receiver with one or more antennas can benefit from the diversity offered by the difference in channels from the transmit antennas to the receiver antenna(s). The way the transmission and reception is organized makes it relatively simple to in the receiver detect the transmitted symbols despite intersymbol interference in the channel. Due to the increased diversity experienced by the receiver the average power level required at the receiver is reduced which can be used to increase the capacity or coverage of a wireless network and/or reduce the required transmitted power.
摘要翻译： 创建了具有符号间干扰的信道的分集发送和接收的方法。 利用这种方法，可以以这样的方式从两个或更多个天线发送，使得具有一个或多个天线的接收机可以从由发射天线到接收机天线的信道差异提供的分集中受益。 组播发送和接收的方式使得在接收机中检测发送的符号，尽管信道中存在码间干扰，但相对简单。 由于接收机经受的增加的分集，减少了接收机所需的平均功率电平，这可以用于增加无线网络的容量或覆盖范围和/或减少所需的发射功率。
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