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1.发明授权公开(公告)号：US07170954B2
公开(公告)日：2007-01-30
申请号：US10077849
申请日：2002-02-20
CPC分类号： H04L1/0625 , H04L1/0612 , H04L1/0637
摘要： Differential unitary space-time (DUST) communication is a technique for communicating via one or more antennas by encoding the transmitted data differentially using unitary matrices at the transmitter, and decoding differentially without knowing the channel coefficients at the receiver. Since channel knowledge is not required at the receiver, DUST is ideal for use on wireless links where channel tracking is undesirable or infeasible. Disclosed are a class of Cayley codes for DUST communication that can produce sets of unitary matrices that work with any number of antennas, and has efficient encoding and decoding at any rate. The codes are named for their generation via the Cayley transform, which maps the highly nonlinear Stiefel manifold of unitary matrices to the linear space of skew-Hermitian matrices. The Cayley codes can be decoded using either successive nulling/cancelling or sphere decoding.
摘要翻译： 差分单时空时间（DUST）通信是一种通过一个或多个天线进行通信的技术，通过使用发射机处的酉矩阵差分地对发送的数据进行编码，并且在不知道接收机处的信道系数的情况下进行差分解码。 由于接收机不需要通道知识，因此DUST非常适用于无线链路，其中信道跟踪是不可取的或不可行的。 公开了一类用于DUST通信的Cayley代码，其可以产生与任何数量的天线一起工作的一组酉矩阵，并且以任何速率进行有效的编码和解码。 这些代码通过Cayley变换命名，它们将酉矩阵的高度非线性Stiefel流形映射到偏斜Hermitian矩阵的线性空间。 可以使用连续的归零/消除或球体解码对Cayley码进行解码。
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2.发明申请METHOD AND SYSTEM OF BEAMFORMING A BROADBAND SIGNAL THROUGH A MULTIPORT NETWORK 有权通过多个网络波束形成宽带信号的方法和系统公开(公告)号：US20110201283A1
公开(公告)日：2011-08-18
申请号：US13023534
申请日：2011-02-08
IPC分类号： H04B1/44
CPC分类号： H04B7/0617 , H04B7/0434 , H04L25/0204
摘要： Aspects of a method and system for beamforming a broadband signal through a multiport network are provided. In this regard, a plurality of signals received via a plurality of antennas may be detected and a plurality of transmit signals may be generated, wherein a phase of at least one of the plurality of transmit signals is responsive to at least one of the detected phases of the received signals. Each of the generated plurality of transmit signals may be separately amplified to generate a plurality of amplified signals. A plurality of the amplified signals may be input to a plurality of first ports of a multi-port network, wherein at least one second port of the multi-port network may be responsive to signals input to at least two of the plurality of first ports.
摘要翻译： 提供了通过多端口网络波束成形宽带信号的方法和系统的方面。 在这点上，可以检测经由多个天线接收的多个信号，并且可以产生多个发射信号，其中多个发射信号中的至少一个发射信号的相位响应于检测相中的至少一个 的接收信号。 所生成的多个发送信号中的每一个可以被单独放大以产生多个放大信号。 多个放大的信号可以被输入到多端口网络的多个第一端口，其中多端口网络的至少一个第二端口可以响应于输入到多个第一端口中的至少两个的信号 。
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公开(公告)号：US06349219B1
公开(公告)日：2002-02-19
申请号：US09260363
申请日：1999-03-01
IPC分类号： H04B700
CPC分类号： H01Q21/08 , H01Q1/246 , H01Q21/061 , H01Q21/22
摘要： In a system for sending wireless communication signals on at least one downlink wavelength and receiving wireless communication signals on at least one uplink wavelength, there is a ratio r equal to the larger divided by the smaller of these wavelengths. The system comprises a receiver operative to receive signals imposed on a carrier having the uplink wavelength, a transmitter operative to transmit signals imposed on a carrier having the downlink wavelength, and an array of independent antenna elements. The array comprises a first and a second sub-array. One sub-array is electrically coupled to the transmitter, such that transmitted signals can be radiated from it, and the other sub-array is electrically coupled to the receiver, such that signals to be received can be extracted from it. The sub-arrays are geometrically similar to each other with a relative scale factor equal to the wavelength ratio r. The sub-arrays have at least one common antenna element.
摘要翻译： 在用于在至少一个下行链路波长上发送无线通信信号并且在至少一个上行链路波长上接收无线通信信号的系统中，存在等于较大的比率r除以这些波长中较小的一个。 该系统包括接收器，用于接收施加在具有上行链路波长的载波上的信号，可操作以发送施加在具有下行链路波长的载波上的信号的发射机和独立天线元件的阵列。 阵列包括第一和第二子阵列。 一个子阵列电耦合到发射机，使得发射的信号可以从其发射，另一个子阵列电耦合到接收机，从而可以从中提取要接收的信号。 子阵列在几何上相似，相对比例因子等于波长比r。 子阵列具有至少一个公共天线元件。
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4.发明授权Wireless transmission method for antenna arrays, having improved resistance to fading 有权天线阵列的无线传输方法，具有改善的抗褪色性能公开(公告)号：US06327310B1
公开(公告)日：2001-12-04
申请号：US09134297
申请日：1998-08-14
IPC分类号： H04L2700
CPC分类号： H04B7/0669 , H04L1/0612 , H04L1/0618
摘要： Disclosed is a modulation method for wireless signal transmission. Each message that is transmitted is made up of a sequence of signals, each selected from a constellation of L such signals, L a positive integer. Each transmitted signal is distributed spatially across a transmitting antenna array, and is also distributed in time. Thus, each signal may be represented as a T×M matrix, in which each of the M columns represents a distinct antenna of the array, and each of the T rows represents a distinct time interval. Each entry in this matrix represents a complex baseband voltage amplitude. Each of these signal matrices is proportional to a matrix having orthonormal columns.
摘要翻译： 公开了一种用于无线信号传输的调制方法。 发送的每个消息由一系列信号组成，每个信号序列从L个这样的信号的星座中选出，L是正整数。 每个发送的信号在发射天线阵列上空间分布，并且也在时间上分布。 因此，每个信号可以表示为TxM矩阵，其中M列中的每一个表示阵列的不同天线，并且T行中的每一个表示不同的时间间隔。 该矩阵中的每个条目表示复基带电压幅度。 这些信号矩阵中的每一个与具有正交列的矩阵成比例。
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5.发明授权公开(公告)号：US08818294B2
公开(公告)日：2014-08-26
申请号：US13506250
申请日：2012-04-06
申请人： Bertrand M. Hochwald
发明人： Bertrand M. Hochwald
IPC分类号： H04B17/00
CPC分类号： H04B7/0617
摘要： Embodiments of methods and apparatuses for transmission using a plurality of transmit chains based on a cost function for electromagnetic radiation are disclosed. One method is utilizing a plurality of chains, adjusting at least one of a phase or an amplitude of at least one of the transmit chains based on a cost function, wherein the cost function comprises a criterion for quality of reception at an intended receiver and a threshold for electromagnetic radiation.
摘要翻译： 公开了基于用于电磁辐射的成本函数的使用多个发射链进行传输的方法和装置的实施例。 一种方法是利用多个链，基于成本函数来调整至少一个发送链中的至少一个的相位或幅度中的至少一个，其中成本函数包括在预期接收机处的接收质量的标准，以及 电磁辐射阈值。
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6.发明授权公开(公告)号：US08810253B2
公开(公告)日：2014-08-19
申请号：US13423227
申请日：2012-03-18
CPC分类号： G01R31/086 , G01R31/026 , Y04S10/522
摘要： Embodiments of methods and apparatuses for characterizing an electrical power distribution system are disclosed. One method includes applying a plurality of test signals to a first plurality of test points of the electrical power distribution system, measuring a plurality of response signals at a second plurality of test points of the electrical distribution system, deriving a characterization matrix for the electrical power distribution system from the plurality of test signals and response signals, and characterizing the electrical power distribution system based on the derived characterization matrix.
摘要翻译： 公开了用于表征配电系统的方法和装置的实施例。 一种方法包括将多个测试信号应用于电力分配系统的第一多个测试点，在配电系统的第二多个测试点处测量多个响应信号，得出电力的表征矩阵 从多个测试信号和响应信号中分配系统，并且基于导出的表征矩阵来表征电力分配系统。
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7.发明授权Method and system of beamforming a broadband signal through a multiport network 有权通过多端口网络波束成形宽带信号的方法和系统公开(公告)号：US08432997B2
公开(公告)日：2013-04-30
申请号：US13023534
申请日：2011-02-08
CPC分类号： H04B7/0617 , H04B7/0434 , H04L25/0204
摘要： Aspects of a method and system for beamforming a broadband signal through a multiport network are provided. In this regard, a plurality of signals received via a plurality of antennas may be detected and a plurality of transmit signals may be generated, wherein a phase of at least one of the plurality of transmit signals is responsive to at least one of the detected phases of the received signals. Each of the generated plurality of transmit signals may be separately amplified to generate a plurality of amplified signals. A plurality of the amplified signals may be input to a plurality of first ports of a multi-port network, wherein at least one second port of the multi-port network may be responsive to signals input to at least two of the plurality of first ports.
摘要翻译： 提供了通过多端口网络波束成形宽带信号的方法和系统的方面。 在这点上，可以检测经由多个天线接收的多个信号，并且可以产生多个发射信号，其中多个发射信号中的至少一个发射信号的相位响应于检测相中的至少一个 的接收信号。 所生成的多个发送信号中的每一个可以被单独放大以产生多个放大信号。 多个放大的信号可以被输入到多端口网络的多个第一端口，其中多端口网络的至少一个第二端口可以响应于输入到多个第一端口中的至少两个的信号 。
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公开(公告)号：US20120068718A1
公开(公告)日：2012-03-22
申请号：US12885883
申请日：2010-09-20
IPC分类号： G01R31/08
CPC分类号： G01R31/08 , G01R31/026 , G01R31/086 , Y04S10/522
摘要： Embodiments of methods and apparatuses for characterizing an electrical power distribution system are disclosed. One method includes applying at least one test signal to at least one test point of the system, measuring a plurality of response signals at a plurality of test points, wherein the plurality of response signals are generated in response to the at least one test signal, and characterizing the system based on the plurality of response signals. One system includes a plurality of test/response units attached to a plurality of test points, the units configured to generate test signals and/or measure response signals at the test points. At least one controller coordinates application of the test signals and characterizes the electrical network based on the response signals. A communications link allows the test/response units to communicate with the at least one controller.
摘要翻译： 公开了用于表征配电系统的方法和装置的实施例。 一种方法包括将至少一个测试信号应用于系统的至少一个测试点，在多个测试点测量多个响应信号，其中响应于该至少一个测试信号产生多个响应信号， 并且基于多个响应信号来表征系统。 一个系统包括附接到多个测试点的多个测试/响应单元，该单元被配置为在测试点产生测试信号和/或测量响应信号。 至少一个控制器协调测试信号的应用，并根据响应信号对电网进行表征。 通信链路允许测试/响应单元与至少一个控制器通信。
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公开(公告)号：US08633705B2
公开(公告)日：2014-01-21
申请号：US13844991
申请日：2013-03-17
IPC分类号： G01R31/08
CPC分类号： G01R31/08 , G01R31/026 , G01R31/086 , Y04S10/522
摘要： Embodiments of methods and apparatuses for characterizing an electrical power distribution system are disclosed. One method includes applying, by at least one test/response unit, at least one test signal to at least one test point of the system, measuring, by a plurality of test/response units, a plurality of response signals at a plurality of test points, wherein the plurality of response signals are generated in response to the at least one test signal, and characterizing the system based on the plurality of response signals.
摘要翻译： 公开了用于表征配电系统的方法和装置的实施例。 一种方法包括通过至少一个测试/响应单元将至少一个测试信号应用于系统的至少一个测试点，通过多个测试/响应单元在多个测试中测量多个响应信号 点，其中响应于所述至少一个测试信号而生成所述多个响应信号，并且基于所述多个响应信号来表征所述系统。
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10.发明申请公开(公告)号：US20120258672A1
公开(公告)日：2012-10-11
申请号：US13506250
申请日：2012-04-06
申请人： Bertrand M. Hochwald
发明人： Bertrand M. Hochwald
IPC分类号： H04B17/00
CPC分类号： H04B7/0617
摘要： Embodiments of methods and apparatuses for transmission using a plurality of transmit chains based on a cost function for electromagnetic radiation are disclosed. One method is utilizing a plurality of chains, adjusting at least one of a phase or an amplitude of at least one of the transmit chains based on a cost function, wherein the cost function comprises a criterion for quality of reception at an intended receiver and a threshold for electromagnetic radiation.
摘要翻译： 公开了基于用于电磁辐射的成本函数的使用多个发射链进行传输的方法和装置的实施例。 一种方法是利用多个链，基于成本函数来调整至少一个发送链中的至少一个的相位或幅度中的至少一个，其中成本函数包括在预期接收机处的接收质量的标准，以及 电磁辐射阈值。
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