公开(公告)号：US08311489B2

公开(公告)日：2012-11-13

申请号：US13098731

申请日：2011-05-02

申请人： Angeliki Alexiou ,  Federico Boccardi ,  Howard C. Huang

发明人： Angeliki Alexiou ,  Federico Boccardi ,  Howard C. Huang

IPC分类号： H04B1/00

CPC分类号： H04B7/0478 ,  H04B7/0417 ,  H04B7/0639 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

摘要： The present invention provides methods implemented in a base station having a plurality of antennas and one or more user terminals. One embodiment of the method includes receiving feedback from at least one user in response to transmitting a first frame to said at least one user. The first frame is formed by pre-coding at least one symbol using at least one first code word selected from at least one first code book associated with the at least one user. The method also includes transmitting at least one second frame to the user(s). The second frame(s) are pre-coded using at least one second codeword selected from at least one second codebook. The second codebook(s) determined based on the feedback and the first codeword(s).

摘要翻译： 本发明提供了在具有多个天线和一个或多个用户终端的基站中实现的方法。 该方法的一个实施例包括响应于向所述至少一个用户发送第一帧而从至少一个用户接收反馈。 第一帧通过使用从与至少一个用户相关联的至少一个第一代码簿中选择的至少一个第一代码字来对至少一个符号进行预编码来形成。 该方法还包括向用户发送至少一个第二帧。 使用从至少一个第二码本中选择的至少一个第二码字对第二帧进行预编码。 基于反馈和第一码字确定的第二码本。

公开(公告)号：US06373832B1

公开(公告)日：2002-04-16

申请号：US09108775

申请日：1998-07-02

申请人： Howard C. Huang ,  Laurence Eugene Mailaender ,  Giovanni Vannucci

发明人： Howard C. Huang ,  Laurence Eugene Mailaender ,  Giovanni Vannucci

IPC分类号： H04B7216

CPC分类号： H04B7/0671

摘要： A system, a transceiver, and methods for code division multiple access (CDMA) communication. The system includes first and second code division multiple access transceivers. The first code division multiple access transceiver has a plurality antennas disposed to provide transmission via a plurality of paths and the second code division multiple access transceiver has a rake arrangement for processing a plurality of signals received at the rake arrangement with differing delays or other characteristics. A driving arrangement is provided for causing the first code division multiple access transceiver to use a relative few, e.g., one, of the plurality of antennas. When, however, an indication is obtained that an adequate number of resolvable signals are likely not received at the rake arrangement of the second transceiver, a circuit switches the driving arrangement to cause the first transceiver to use more of the plurality of antennas. In one implementation, the second transceiver sends a feedback signal indicating the number of useful signals being received and the first transceiver responds to the feedback signal by selecting and using a desirable number of transmit antennas. In an implementation suitable for a time-division duplexing (TDD) communication system, the first transceiver obtains the indication by inference from the fact that it is not receiving an adequate plurality of resolvable signals from the second transceiver. When the first transceiver obtains the indication, it drives the increased number of antennas either with respective delays or with different codes of the CDMA type.

摘要翻译： 一种用于码分多址（CDMA）通信的系统，收发机和方法。 该系统包括第一和第二码分多址收发器。 第一码分多址收发器具有设置成经由多个路径提供传输的多个天线，并且第二码分多址收发器具有用于处理具有不同延迟或其他特性的在前置放置处接收的多个信号的前置放置装置。 提供驱动装置，用于使第一码分多址收发器使用多个天线中相对较少的例如一个天线。 然而，当获得在第二收发器的前置放置时可能没有接收到足够数量的可解析信号的指示时，电路切换驱动装置以使得第一收发器使用多个天线中的更多的天线。 在一个实现中，第二收发器发送指示正在接收的有用信号的数量的反馈信号，并且第一收发器通过选择和使用期望数量的发射天线来响应于反馈信号。 在适用于时分双工（TDD）通信系统的实施例中，第一收发机从不从第二收发器接收到足够多的可解析信号的事实通过推断获得指示。 当第一收发器获得指示时，它以相应的延迟或CDMA类型的不同码来驱动增加的天线数量。

公开(公告)号：US06188718B1

公开(公告)日：2001-02-13

申请号：US09138465

申请日：1998-08-21

申请人： Richard Dennis Gitlin ,  Howard C. Huang ,  Laurence Eugene Mailaender ,  Reinaldo A. Valenzuela

发明人： Richard Dennis Gitlin ,  Howard C. Huang ,  Laurence Eugene Mailaender ,  Reinaldo A. Valenzuela

IPC分类号： H04B110

CPC分类号： H04W52/267 ,  H04B1/7107

摘要： A method and apparatus for increasing system capacity in a mixed-rate wireless communication are disclosed. Improvements are obtained using multiuser detection or antenna array processing techniques or both to explicitly cancel or attenuate only the high power users. Multiuser detection may be combined with antenna array processing to recover capacity appropriated by the high-power users. By mitigating the interference effects of only the high-powered users, the computational burden is manageable. An antenna array algorithm or a multiuser detection algorithm or both, are applied only to n high rate users (n

摘要翻译： 公开了一种用于在混合速率无线通信中增加系统容量的方法和装置。 使用多用户检测或天线阵列处理技术或者仅仅显式地取消或衰减高功率用户来获得改进。 多用户检测可以与天线阵列处理相结合，以恢复高功率用户所适用的容量。 通过减轻只有大功率用户的干扰影响，计算负担是可控的。 天线阵列算法或多用户检测算法或两者都仅应用于n个高速率用户（n

公开(公告)号：US20150236769A1

公开(公告)日：2015-08-20

申请号：US14631278

申请日：2015-02-25

申请人： Angeliki Alexiou ,  Federico Boccardi ,  Howard C. Huang

发明人： Angeliki Alexiou ,  Federico Boccardi ,  Howard C. Huang

IPC分类号： H04B7/04 ,  H04L25/03

CPC分类号： H04B7/0478 ,  H04B7/0417 ,  H04B7/0639 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

摘要： The present invention provides methods implemented in a base station having a plurality of antennas and one or more user terminals. One embodiment of the method includes receiving feedback from at least one user in response to transmitting a first frame to said at least one user. The first frame is formed by pre-coding at least one symbol using at least one first code word selected from at least one first code book associated with the at least one user. The method also includes transmitting at least one second frame to the user(s). The second frame(s) are pre-coded using at least one second codeword selected from at least one second codebook. The second codebook(s) determined based on the feedback and the first codeword(s).

摘要翻译： 本发明提供了在具有多个天线和一个或多个用户终端的基站中实现的方法。 该方法的一个实施例包括响应于向所述至少一个用户发送第一帧而从至少一个用户接收反馈。 第一帧通过使用从与至少一个用户相关联的至少一个第一代码簿中选择的至少一个第一代码字来对至少一个符号进行预编码来形成。 该方法还包括向用户发送至少一个第二帧。 使用从至少一个第二码本中选择的至少一个第二码字对第二帧进行预编码。 基于反馈和第一码字确定的第二码本。

公开(公告)号：US20120171972A1

公开(公告)日：2012-07-05

申请号：US12984950

申请日：2011-01-05

申请人： Howard C. Huang ,  Dragan M. Samardzija ,  Reinaldo A. Valenzuela ,  Cuong Tran ,  Susan J. Walker

发明人： Howard C. Huang ,  Dragan M. Samardzija ,  Reinaldo A. Valenzuela ,  Cuong Tran ,  Susan J. Walker

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。

公开(公告)号：US20120169539A1

公开(公告)日：2012-07-05

申请号：US12984916

申请日：2011-01-05

申请人： Howard C. Huang ,  Cuong Tran

发明人： Howard C. Huang ,  Cuong Tran

IPC分类号： H01Q3/00

CPC分类号： H01Q3/26

摘要： One embodiment of a beamforming system includes an antenna array and at least one sensor configured to sense one of movement and displacement of at least a portion of the antenna array. A processor is configured to control beamforming by the antenna array based on output from the sensor.

摘要翻译： 波束成形系统的一个实施例包括天线阵列和被配置为感测天线阵列的至少一部分的移动和位移之一的至少一个传感器。 处理器被配置为基于来自传感器的输出来控制天线阵列的波束成形。

公开(公告)号：US06301293B1

公开(公告)日：2001-10-09

申请号：US09129479

申请日：1998-08-04

申请人： Howard C. Huang ,  Constantinos Basil Papadias ,  Laurence Eugene Mailaender

发明人： Howard C. Huang ,  Constantinos Basil Papadias ,  Laurence Eugene Mailaender

IPC分类号： H04K100

CPC分类号： H04B1/71055 ,  H04B1/7093 ,  H04B1/7103 ,  H04B1/7115

摘要： Linear space-time multiuser detectors are described that combine array processing, rake detection, and multiuser detection and that satisfy a minimum mean-squared error criteria. Both embodiments can be implemented adaptively so as to account for unknown sources of interference. The adaptive implementation of the first embodiment of a linear space-time detector requires explicit estimates of the channel coefficients. On the other hand, the adaptive implementation of the second embodiment does not require these estimates since they can be adaptively obtained. Both of these detectors provide significant performance advantages over single-user space-time detectors and over multiuser detectors which do not account for CDMA interference from unknown sources.

摘要翻译： 描述了组合阵列处理，耙检测和多用户检测并且满足最小均方误差准则的线性时空多用户检测器。 可以自适应地实施两个实施例，以便考虑未知的干扰源。 线性时空检测器的第一实施例的自适应实现需要对信道系数的显式估计。 另一方面，第二实施例的自适应实现不需要这些估计，因为它们可以被自适应地获得。 这两个检测器都比单用户空间时间检测器和多用户检测器提供了显着的性能优势，这些检测器不考虑来自未知来源的CDMA干扰。

公开(公告)号：US06201799B1

公开(公告)日：2001-03-13

申请号：US08846454

申请日：1997-05-01

申请人： Howard C. Huang ,  Chih-Lin I

发明人： Howard C. Huang ,  Chih-Lin I

IPC分类号： H04B1500

CPC分类号： H04B1/71052 ,  H04B1/709 ,  H04B1/7107 ,  H04B1/7115

摘要： A Multicode (MC) Code Division Multiple Access (CDMA) receiver receives J encoded multicode channels (where J>1) over L multiple air signal paths (where L>1) and forms a decorrelator output vector in which for each of the J multicode channels, the interference caused by the other J−1 multicode channels has been cancelled. When the MC CDMA receiver is a coherent receiver, a pilot interference canceller cancels a received pilot signal from the J channel code of each of the received J multicode channels prior to forming the decorrelator output vector.

摘要翻译： 多码（MC）码分多址（CDMA）接收机通过L多个空中信号路径（其中L> 1）接收J个编码多码信道（其中J> 1），并形成去相关器输出向量，其中对于每个J多码 通道，其他J-1多通道通道造成的干扰已被取消。 当MC CDMA接收机是相干接收机时，导频干扰消除器在形成去相关器输出向量之前，从接收的每个J多码信道的J信道码中取消接收的导频信号。

公开(公告)号：US6067292A

公开(公告)日：2000-05-23

申请号：US841316

申请日：1997-04-30

申请人： Howard C. Huang ,  Chih-Lin I ,  Stephan ten Brink ,  Giovanni Vannucci

发明人： Howard C. Huang ,  Chih-Lin I ,  Stephan ten Brink ,  Giovanni Vannucci

IPC分类号： H04B1/707 ,  H04B7/26 ,  H04L7/00 ,  H04J13/00

CPC分类号： H04B1/7107 ,  H04B1/71072 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/712 ,  H04B2001/71077 ,  H04B2201/70701 ,  H04B2201/70709

摘要： A Code-Division Multiple Access (CDMA) receiver removes the pilot signal from the received signal. The pilot signal is defined by its multipath parameters (amplitudes, phase shift and delays) and its signature sequence. Since this information is known at the user's receiver terminal (i.e., handset), the pilot signals of the interfering multipath components of the baseband received signal are detected and removed prior to demodulation of the desired multipath component. The pilot signal may be cancelled prior to or following the data accumulation stage. The pilot signal cancellation can be switched on and off depending on the detected path signal level.

摘要翻译： 码分多址（CDMA）接收机从接收信号中去除导频信号。 导频信号由其多径参数（幅度，相移和延迟）及其签名序列定义。 由于该信息在用户的接收机终端（即，手机）处是已知的，所以在解调期望的多路径分量之前检测和去除基带接收信号的干扰多径分量的导频信号。 可以在数据累积阶段之前或之后取消导频信号。 导频信号消除可以根据检测到的路径信号电平进行接通和关断。

公开(公告)号：US5870378A

公开(公告)日：1999-02-09

申请号：US700262

申请日：1996-08-20

申请人： Howard C. Huang ,  Chih-Lin I ,  Stephan ten Brink ,  Charles Albert Webb, III

发明人： Howard C. Huang ,  Chih-Lin I ,  Stephan ten Brink ,  Charles Albert Webb, III

IPC分类号： H04B1/707 ,  H04B1/709 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/021 ,  H04B7/216

CPC分类号： H04B1/709 ,  H04B1/707 ,  H04J13/0048 ,  H04J13/10

摘要： A Multi-Code (MC) Code Division Multiple Access (CDMA) receiver receives N (where N.gtoreq.1) encoded signal channels over multiple air signal paths. The N signal channels are encoded using a properly chosen subset of Walsh codes based on a Walsh-Matrix, W.sup.M, where M is a power of two. In the disclosed MC-CDMA receiver, a timing correlator means recovers the timing and control signal for the N signal channels received over any particular signal path; a FWHT circuit together with a second correlator means decodes all of the N signal channels.

摘要翻译： 多码（MC）码分多址（CDMA）接收机在多个空中信号路径上接收N（其中N> / = 1）个编码信号信道。 使用基于Walsh-Matrix，WM的适当选择的沃尔什码的子集对N个信号信道进行编码，其中M是2的幂。 在公开的MC-CDMA接收机中，定时相关器装置恢复通过任何特定信号路径接收的N个信号信道的定时和控制信号; 与第二相关器一起的FWHT电路意味着解码所有N个信号信道。