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公开(公告)号：US20080224930A1
公开(公告)日：2008-09-18
申请号：US11717007
申请日：2007-03-13
CPC分类号： G01S5/12 , G01C21/206 , G01S5/0252
摘要： According to a method for localizing a transmitter inside a building, a transmitter emits rays which undergo multiple reflections with the walls, ceilings and floors of the building. Each of K receivers receives rays from the transmitter, and the receivers estimates the AOA (Angle of arrival), TOA (Time of Arrival) and power of each ray. At least one of the receivers uses a known blueprint of the building and material characteristics of the walls to localize the transmitter to a higher degree of accuracy by applying a backward ray tracing algorithm.
摘要翻译： 根据用于将建筑物内的发射器定位的方法，发射器发射与建筑物的墙壁，天花板和地板进行多次反射的射线。 每个K个接收器接收来自发射机的光线，并且接收机估计AOA（到达角度），TOA（到达时间）和每个射线的功率。 至少一个接收器使用建筑物的已知蓝图和墙壁的材料特性，通过应用反向光线跟踪算法来将发射器定位成更高的准确度。
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公开(公告)号：US07764230B2
公开(公告)日：2010-07-27
申请号：US11717007
申请日：2007-03-13
IPC分类号： G01S3/02
CPC分类号： G01S5/12 , G01C21/206 , G01S5/0252
摘要： According to a method for localizing a transmitter inside a building, a transmitter emits rays which undergo multiple reflections with the walls, ceilings and floors of the building. Each of K receivers receives rays from the transmitter, and the receivers estimates the AOA (Angle of arrival), TOA (Time of Arrival) and power of each ray. At least one of the receivers uses a known blueprint of the building and material characteristics of the walls to localize the transmitter to a higher degree of accuracy by applying a backward ray tracing algorithm.
摘要翻译： 根据用于将建筑物内的发射器定位的方法，发射器发射与建筑物的墙壁，天花板和地板进行多次反射的射线。 每个K个接收器接收来自发射机的光线，并且接收机估计AOA（到达角度），TOA（到达时间）和每个射线的功率。 至少一个接收器使用建筑物的已知蓝图和墙壁的材料特性，通过应用反向光线跟踪算法来将发射器定位成更高的准确度。
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公开(公告)号：US20120196607A1
公开(公告)日：2012-08-02
申请号：US13017304
申请日：2011-01-31
IPC分类号： H04W72/04
CPC分类号： H04J11/0053 , H04B7/024 , H04B7/0626 , H04B7/0658 , H04L5/0035 , H04L5/0039
摘要： Techniques are disclosed for reducing channel information feedback in communication networks. For example, a method comprises the following steps. A set of mobile terminals and a set of base stations designated to participate in a coordinated multipoint transmission protocol in a communication network are identified. One or more unique downlink communication resource blocks are assigned to each designated mobile terminal that is located in a given first sector of a designated base station. As such, each designated mobile terminal in the first sector of the designated base station: (i) performs a channel state estimation process in response to respective signals received from the designated base stations in the one or more unique downlink communication resource blocks assigned to that designated mobile terminal; and (ii) transmits resulting channel state information back to at least one of the designated base stations.
摘要翻译： 公开了用于减少通信网络中的信道信息反馈的技术。 例如，一种方法包括以下步骤。 识别一组移动终端和指定为参与通信网络中的协调多点传输协议的一组基站。 一个或多个唯一的下行链路通信资源块被分配给位于指定基站的给定第一扇区中的每个指定的移动终端。 这样，指定基站的第一扇区中的每个指定的移动终端：（i）响应于从分配给该基站的一个或多个唯一下行链路通信资源块中从指定的基站接收到的相应信号来执行信道状态估计处理 指定移动终端; 和（ii）将所生成的信道状态信息发送回指定的基站中的至少一个。
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公开(公告)号：US20120172096A1
公开(公告)日：2012-07-05
申请号：US12984932
申请日：2011-01-05
IPC分类号： H04W88/02
CPC分类号： H01Q1/246
摘要： The present invention relates to an antenna array for supporting multiple beam architectures. For example, a transceiver may include an antenna array. The antenna array includes a plurality of antenna elements, where the plurality of antenna elements is configured to support at least two beam architectures in a cell site. Each beam architecture is associated with a different configuration of sectors and beamforming signals. According to one embodiment, each beam architecture is associated with a different wireless standard. According to another embodiment, each beam architecture is associated with a different carrier within one wireless standard. The antenna elements may be arranged as a circular array.
摘要翻译： 本发明涉及一种支持多光束结构的天线阵列。 例如，收发器可以包括天线阵列。 天线阵列包括多个天线元件，其中多个天线元件被配置为在小区站点中支持至少两个波束架构。 每个波束结构与扇区和波束成形信号的不同配置相关联。 根据一个实施例，每个波束架构与不同的无线标准相关联。 根据另一实施例，每个波束结构与一个无线标准内的不同载波相关联。 天线元件可以被布置为圆形阵列。
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公开(公告)号：US07421039B2
公开(公告)日：2008-09-02
申请号：US10160126
申请日：2002-06-04
CPC分类号： H04B7/0413 , H04L1/0001 , H04W52/26 , H04W52/42
摘要： In the method and system, a transmitter demultiplexes an input data stream into M substreams, where each of the M substreams have a data rate lower than a data rate of the input data stream. The substreams are transmitted as signals from a transmit array of M antennas to be received by a receiver array at a receiver in the system, based on a set of transmission parameters. The transmitter adjusts at least one of the transmission parameters based on a condition experienced by the receiver so as to increase data throughput in the system. The adjustable parameters include the number of antennas to employ, the on/off patterns for the antennas, and eigenmode values for the antennas used in order to determine transmit power. Accordingly, system data throughput may be improved while maintaining transmit power and system bandwidth constant.
摘要翻译： 在该方法和系统中，发射机将输入数据流解复用为M个子流，其中每个M个子流具有低于输入数据流的数据速率的数据速率。 基于一组传输参数，子流作为来自M个天线的发射阵列的信号被传输以由系统中的接收机处的接收器阵列接收。 发射机根据接收机所经历的状况来调整传输参数中的至少一个，以增加系统中的数据吞吐量。 可调节的参数包括要使用的天线数量，天线的开/关模式以及用于确定发射功率的天线的本征模式值。 因此，可以在维持发射功率和系统带宽恒定的同时提高系统数据吞吐量。
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公开(公告)号：US6144652A
公开(公告)日：2000-11-07
申请号：US745380
申请日：1996-11-08
申请人： Dan Avidor , Sanjay Kasturia , Theodore Sizer, II , Reinaldo A. Valenzuela , Gregory Alan Wright
发明人： Dan Avidor , Sanjay Kasturia , Theodore Sizer, II , Reinaldo A. Valenzuela , Gregory Alan Wright
IPC分类号： H04J3/16 , H01Q1/24 , H01Q3/26 , H04B7/00 , H04W16/14 , H04W16/28 , H04W24/00 , H04W72/08 , H04W76/02 , H04W84/14
CPC分类号： H04W72/082 , H01Q1/246 , H01Q3/26 , H01Q3/2605 , H04W16/28 , H04W84/14
摘要： A time-division-multiplexed fixed wireless loop system and methods therefor are disclosed. The system comprises a plurality of cells each having a base station and a plurality of terminals. The base station includes a steerable and adjustable multibeam antenna for communicating with each of the terminals, which have fixed antennas. A cell controller associated with each base station allocates communication time slots so as to minimize mutual interference between base station/terminal links sharing the same time slot. Slot assignment is based on regional, periodically updated interference measurements that are stored in data bases.
摘要翻译： 公开了一种时分复用固定无线环路系统及其方法。 该系统包括多个具有基站和多个终端的小区。 基站包括用于与具有固定天线的每个终端进行通信的可操纵和可调节的多波束天线。 与每个基站相关联的小区控制器分配通信时隙，以便最小化共享相同时隙的基站/终端链路之间的相互干扰。 插槽分配基于存储在数据库中的区域性，周期性更新的干扰测量。
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公开(公告)号：US08885700B2
公开(公告)日：2014-11-11
申请号：US13025255
申请日：2011-02-11
摘要： In one embodiment, the method of compressing a digital signal includes reducing redundancies in the digital signal, scaling a block of samples output from the reducing step by a scaling factor, and quantizing the scaled samples to produce compressed samples. The digital signal being compressed may be a digital radio frequency signal.
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公开(公告)号：US20120171972A1
公开(公告)日：2012-07-05
申请号：US12984950
申请日：2011-01-05
IPC分类号： H04B1/38
CPC分类号： H01Q21/20 , H01Q1/246 , H01Q3/2605 , H01Q21/205 , H01Q25/00 , H04B7/0617
摘要： The present invention relates to a conformal antenna array. Embodiments of the present invention provide a transceiver for communicating data in a cell site of a wireless communication system. The transceiver includes the conformal antenna array including a plurality of antenna elements, where the plurality of antenna elements has a non-linear antenna configuration to occupy at least two dimensions, and a controller configured to transmit multiple bearnforming signals using at least two same antenna elements of the plurality of antenna elements.
摘要翻译： 本发明涉及保形天线阵列。 本发明的实施例提供了一种用于在无线通信系统的小区站点中传送数据的收发器。 收发器包括包括多个天线元件的共形天线阵列，其中多个天线元件具有非线性天线配置以占据至少两个维度;以及控制器，被配置为使用至少两个相同的天线元件发送多个成形信号 的多个天线元件。
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9.发明授权公开(公告)号：US06888809B1
公开(公告)日：2005-05-03
申请号：US09482429
申请日：2000-01-13
CPC分类号： H04B7/0634 , H04B7/0626
摘要： In a MIMO system the signals transmitted from the various antennas are processed so as to improve the ability of the receiver to extract them from the received signal even in the face of some correlation. More specifically the number of bit streams that is transmitted simultaneously is adjusted, e.g., reduced, depending on the level of correlation, while multiple versions of each bit stream, variously weighted, are transmitted simultaneously. The variously weighted versions are combined to produced one combined weighted signal. The receiver processes the received signals in the same manner as it would have had all the signals reaching the receive antennas been uncorrelated. The weight vectors may be determined by the forward channel transmitter using the channel properties of the forward link which are made known to the transmitter of the forward link by being transmitted from the receiver of the forward link by the transmitter of the reverse link or the weight vectors may be determined by the forward channel transmitter using the channel properties of the forward link and the determined weight vectors are made known to the transmitter of the forward link by being transmitted from the receiver of the forward link by the transmitter of the reverse link. The channel properties used to determine the weight vectors may include the channel response from the transmitter to the receiver and the covariance matrix of noise and interference measured at the receiver.
摘要翻译： 在MIMO系统中，处理从各种天线发送的信号，以便即使面对一些相关性，也可以提高接收机从接收信号中提取它们的能力。 更具体地，根据相关级别来调整，例如减少同时传输的比特流的数量，同时传输各种加密的每个比特流的多个版本。 将各种加权版本组合以产生一个组合加权信号。 接收机以与所有到达接收天线的所有信号不相关的相同方式处理接收到的信号。 加权向量可以由正向信道发射机使用正向链路的信道属性来确定，前向链路的信道属性是由前向链路的发射机通过反向链路的发射机从前向链路的接收机发送的， 向量可以由正向信道发射机使用前向链路的信道特性来确定，所确定的权重向量通过从反向链路的发射机从前向链路的接收机发送到前向链路的发射机。 用于确定权重向量的信道属性可以包括从发射机到接收机的信道响应以及在接收机处测量的噪声和干扰的协方差矩阵。
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10.发明授权Method for determining organization parameters in a wireless communication system 失效用于确定无线通信系统中的组织参数的方法公开(公告)号：US06496700B1
公开(公告)日：2002-12-17
申请号：US08628214
申请日：1996-04-04
IPC分类号： H04B1700
CPC分类号： H04W16/18 , H04B17/318 , H04B17/391 , H04W24/02 , H04W52/223 , H04W52/242
摘要： A level of automated adjustment of system organization parameters in a wireless communication system is provided by determining the parameter settings using a characterization of signal propagation of the system's coverage area. This characterization is based on measurements of path loss-related characteristics by the system's base stations and wireless terminals operating throughout the coverage area. An exemplary path loss-related characteristic is path loss as determined by measuring received signal strength (RSS) at wireless terminals based on signals transmitted at known powers by a plurality of the system's base stations. It is possible for the wireless terminals to take measurements while operating in the coverage area, whether idle or during communication with the system, and for such terminals to be associated with the system's subscribers. A resulting characterization of signal propagation in the coverage area based on the measured path loss-related characteristic can then be used to determine a variety of parameter settings including base station transmission power settings, wireless terminal access parameters, neighbor lists, sets of base stations that can reuse channels and base station transmission power settings when base stations are added to or removed from the system.
摘要翻译： 通过使用系统覆盖区域的信号传播的表征来确定参数设置来提供无线通信系统中的系统组织参数的自动调整级别。 该表征基于系统的基站和在整个覆盖区域内运行的无线终端的路径损耗相关特性的测量。 示例性路径损耗相关特性是通过基于由多个系统的基站以已知功率发送的信号测量无线终端处的接收信号强度（RSS）所确定的路径损耗。 无线终端可以在覆盖区域中进行测量，无论是空闲还是与系统通信，并且这样的终端与系统的用户相关联。 然后可以使用基于所测量的路径损耗相关特性的覆盖区域中的信号传播的结果表征来确定各种参数设置，包括基站传输功率设置，无线终端接入参数，邻居列表，基站集合 当基站被添加到系统或从系统中移除时，可以重用信道和基站传输功率设置。
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