公开(公告)号：US20130129012A1

公开(公告)日：2013-05-23

申请号：US13740827

申请日：2013-01-14

申请人： AT&T Mobility II LLC

发明人： Siavash Alamouti ,  Vahid Tarokh

IPC分类号： H04B7/06

CPC分类号： H04B7/0857 ,  H04B1/02 ,  H04B7/0613 ,  H04B7/0615 ,  H04B7/0667 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/0837 ,  H04B7/0845 ,  H04B7/0854 ,  H04B7/0891 ,  H04B7/12 ,  H04L1/0054 ,  H04L1/04 ,  H04L1/0606 ,  H04L1/0618 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0643 ,  H04L1/0668 ,  H04L1/08 ,  H04L25/0202

摘要： A simple block coding arrangement is created with symbols transmitted over a plurality of transmit channels, in connection with coding that comprises only simple arithmetic operations, such as negation and conjugation. The diversity created by the transmitter utilizes space diversity and either time or frequency diversity. Space diversity is effected by redundantly transmitting over a plurality of antennas, time diversity is effected by redundantly transmitting at different times, and frequency diversity is effected by redundantly transmitting at different frequencies: Illustratively, using two transmit antennas and a single receive antenna, one of the disclosed embodiments provides the same diversity gain as the maximal-ratio receiver combining (MRRC) scheme with one transmit antenna and two receive antennas. The principles of this invention are applicable to arrangements with more than two antennas, and an illustrative embodiment is disclosed using the same space block code with two transmit and two receive antennas.

摘要翻译： 结合仅包括诸如否定和共轭的简单算术运算的编码，创建具有通过多个发送信道发送的符号的简单块编码布置。 发射机产生的分集利用空间分集和时间或频率分集。 通过在多个天线上进行冗余发送来实现空间分集，通过在不同时间进行冗余发送实现时间分集，并且通过以不同频率进行冗余传输来实现频率分集：说明性地，使用两个发射天线和单个接收天线 所公开的实施例提供与最大比率接收机组合（MRRC）方案与一个发射天线和两个接收天线相同的分集增益。 本发明的原理可应用于具有两个以上天线的布置，并且使用具有两个发射天线和两个接收天线的相同空间块码公开了一个说明性实施例。

公开(公告)号：US08400969B2

公开(公告)日：2013-03-19

申请号：US13027770

申请日：2011-02-15

申请人： Yasuhiro Tanaka

发明人： Yasuhiro Tanaka

IPC分类号： H04W4/00

CPC分类号： H04B17/0085 ,  H04B7/0845 ,  H04B17/382 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/1887 ,  H04L25/0204 ,  H04L25/0224 ,  H04L2001/0093

摘要： A radio apparatus communicates with a plurality of terminal apparatuses by using a packet signal composed of at least one stream. A control unit divides a certain period into a plurality of partial periods and assigns respectively the plurality of partial periods to the plurality of terminal apparatuses by associating the periods with the terminal apparatuses. The control unit also generates a packet signal for use in control and packet signals for use in inquiry. In so doing, the control unit generates the inquiry packet signals for the plurality of respective terminal apparatuses, as a single packet signal. A baseband processing unit and other units transmit the control packet signal and then transmit the inquiry packet signals, and receive packet signals, containing inquiry results, from the plurality of respective terminal apparatuses.

摘要翻译： 无线电设备通过使用由至少一个流组成的分组信号与多个终端设备进行通信。 控制单元将一定周期划分为多个部分周期，并通过将周期与终端装置相关联，将多个部分周期分配给多个终端装置。 控制单元还生成用于在查询中使用的控制和分组信号中的分组信号。 在这样做时，控制单元生成用于多个各个终端装置的查询分组信号作为单个分组信号。 基带处理单元等单元发送控制分组信号，然后从多个各自的终端装置发送查询分组信号，并接收包含查询结果的分组信号。

公开(公告)号：US08355475B2

公开(公告)日：2013-01-15

申请号：US13073369

申请日：2011-03-28

申请人： Siavash Alamouti ,  Vahid Tarokh

发明人： Siavash Alamouti ,  Vahid Tarokh

IPC分类号： H04B7/10 ,  H04L1/02

CPC分类号： H04B7/0857 ,  H04B1/02 ,  H04B7/0613 ,  H04B7/0615 ,  H04B7/0667 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/0837 ,  H04B7/0845 ,  H04B7/0854 ,  H04B7/0891 ,  H04B7/12 ,  H04L1/0054 ,  H04L1/04 ,  H04L1/0606 ,  H04L1/0618 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0643 ,  H04L1/0668 ,  H04L1/08 ,  H04L25/0202

摘要： A simple block coding arrangement is created with symbols transmitted over a plurality of transmit channels, in connection with coding that comprises only simple arithmetic operations, such as negation and conjugation. The diversity created by the transmitter utilizes space diversity and either time or frequency diversity. Space diversity is effected by redundantly transmitting over a plurality of antennas, time diversity is effected by redundantly transmitting at different times, and frequency diversity is effected by redundantly transmitting at different frequencies:

摘要翻译： 结合仅包括诸如否定和共轭的简单算术运算的编码，创建具有通过多个发送信道发送的符号的简单块编码布置。 发射机产生的分集利用空间分集和时间或频率分集。 通过在多个天线上进行冗余发送来实现空间分集，通过在不同时间的冗余发送来实现时间分集，并且通过以不同频率进行冗余发送来实现频率分集：

公开(公告)号：US08351553B2

公开(公告)日：2013-01-08

申请号：US12297125

申请日：2007-02-02

申请人： Shousei Yoshida ,  Masayuki Kimata

发明人： Shousei Yoshida ,  Masayuki Kimata

IPC分类号： H04L1/02 ,  H04B7/04

CPC分类号： H04B7/0845 ,  H04B1/7107 ,  H04J15/00 ,  H04L5/023 ,  H04L2025/03414 ,  H04L2025/03426

摘要： In a MIMO receiving apparatus, the signals of single carriers transmitted from a plurality of transmission antennas are received by a plurality of reception antennas (1-1 through 1-N) and then separated according to frequency ranges. In this MIMO receiving apparatus, interference replicas of the antennas are eliminated from the received signals (by subtractor 54) before equalizing the two-dimensional frequency ranges, and non-distortion signal replicas are added (by a demodulating part 55) to the signals from which the interference replicas of the antennas have been eliminated after equalizing the two-dimensional frequency ranges.

摘要翻译： 在MIMO接收装置中，从多个发送天线发送的单载波的信号由多个接收天线（1-1〜1-N）接收，然后根据频率范围分离。 在该MIMO接收装置中，在均衡二维频率范围之前，从接收到的信号（由减法器54）中消除了天线的干扰副本，并且将非失真信号副本（由解调部分55）添加到来自 在平衡二维频率范围之后，已经消除了天线的干扰复制。

公开(公告)号：US08351488B2

公开(公告)日：2013-01-08

申请号：US12052527

申请日：2008-03-20

申请人： Herbert Dawid ,  Juergen Niederholz ,  Christian Drewes ,  Thorsten Clevorn

发明人： Herbert Dawid ,  Juergen Niederholz ,  Christian Drewes ,  Thorsten Clevorn

IPC分类号： H04B1/00

CPC分类号： H04B7/0845 ,  H04B1/712 ,  H04B7/0894 ,  H04B7/0897

摘要： A receiver, includes a plurality of antennas to receive radio signals from a plurality of transmission paths, and a plurality of sets of RAKE fingers to generate first signals. Each set of RAKE fingers is coupled to a respective one of the plurality of antennas, and a weighting factor generator generates weighting factors for weighting the first signals, wherein the weighting factor for one of the first signals is generated by using first signals generated by at least two of the plurality of sets of RAKE fingers. Further, at least two of the first signals used to generate the weighting factor are received from the same transmission path.

摘要翻译： 接收机包括多个天线，用于接收来自多个传输路径的无线电信号，以及多组RAKE指，以产生第一信号。 每组RAKE指状物耦合到多个天线中的相应一个天线，加权因子发生器产生加权第一信号的加权因子，其中通过使用由第一信号产生的第一信号来产生第一信号之一的加权因子 多个RAKE手指组中的至少两个。 此外，从相同的传输路径接收用于产生加权因子的第一信号中的至少两个。

公开(公告)号：US20120214524A1

公开(公告)日：2012-08-23

申请号：US13031216

申请日：2011-02-20

申请人： Daniel Wajcer ,  Guy Cohen

发明人： Daniel Wajcer ,  Guy Cohen

IPC分类号： H04B7/00

CPC分类号： H04B7/0845 ,  H04B1/109 ,  H04B1/126

摘要： A method for communication includes receiving a Radio Frequency (RF) channel containing a desired signal conforming to a first air interface and an interfering signal conforming to a second air interface. A first receiver configured for the first air interface and a second receiver configured for the second air interface are synchronized to a common frequency and timing reference. While the first and second receivers are synchronized, the desired signal is decoded from the RF channel using the first receiver to generate a first output, the interfering signal is decoded from the RF channel using the second receiver to generate a second output, and the desired signal is reconstructed while suppressing the interfering signal by jointly processing the first and second outputs.

摘要翻译： 一种用于通信的方法包括接收包含符合第一空中接口的所需信号的射频（RF）信道和符合第二空中接口的干扰信号。 配置用于第一空中接口的第一接收机和被配置用于第二空中接口的第二接收机被同步到公共频率和定时参考。 当第一和第二接收机被同步时，使用第一接收机从RF信道解码期望的信号以产生第一输出，使用第二接收机从RF信道解码干扰信号以产生第二输出，并且所需的信号 通过联合处理第一和第二输出来抑制干扰信号而重建信号。

公开(公告)号：US08213541B2

公开(公告)日：2012-07-03

申请号：US11854227

申请日：2007-09-12

申请人： Seigo Nakao ,  Yoshiyuki Otani ,  Kiyoshige Ito

发明人： Seigo Nakao ,  Yoshiyuki Otani ,  Kiyoshige Ito

IPC分类号： H04L27/06 ,  H04L1/02

CPC分类号： H04L27/2657 ,  H04B7/084 ,  H04B7/0845 ,  H04L27/2613 ,  H04L27/2675 ,  H04L2027/0061 ,  H04L2027/0067

摘要： A weight vector computing unit derives amounts of phase rotation for a plurality of multicarrier signals, respectively, and rotates the phase of a weight vector. A combining unit weights respectively a plurality of multicarrier signals with the phase-rotated weight vector, combines weighting results, and determines a combined result. A receiving weight vector computing unit remodulates the determined result and derives a first phase difference between the plurality of multicarrier signals and a result of the remodulation. The receiving weight vector computing unit remodulates the values of pilot signals and derives a second phase difference between the plurality of multicarrier signals and a result of the remodulation. Further, the receiving weight vector derives phase rotation amounts based on the first phase difference and the second phase difference.

摘要翻译： 权重向量计算单元分别导出多个多载波信号的相位旋转量，并且使权重向量的相位旋转。 组合单元分别加权具有相位旋转加权矢量的多个多载波信号，组合加权结果，并确定组合结果。 接收权重向量计算单元重新确定所确定的结果并且导出多个多载波信号之间的第一相位差和再调制的结果。 接收加权向量计算单元重新调制导频信号的值，并且导出多个多载波信号之间的第二相位差和再调制的结果。 此外，接收权重向量基于第一相位差和第二相位差导出相位旋转量。

公开(公告)号：US08107906B2

公开(公告)日：2012-01-31

申请号：US11625248

申请日：2007-01-19

申请人： Allan Lum ,  Todd Sutton

发明人： Allan Lum ,  Todd Sutton

IPC分类号： H04B17/02

CPC分类号： H04B7/0845 ,  H04K3/228 ,  H04K2203/32

摘要： Methods and apparatus for implementing a wireless communication transceiver having receive path performance diversity. The transceiver implements a plurality of signal paths that can be configured as space diversity receive paths. Each of the plurality of signal paths includes a distinct RF filter. Each RF filter can be configured to provide a distinct frequency response, and in particular, a distinct jammer rejection profile. One of the RF filters can be configured to provide substantially no in-band jammer rejection. Each additional distinct RF filter can be configured to reject at least one distinct in-band jammer frequency or band of frequencies. A diversity receiver coherently combines the path performance diverse signals from each filter output. A transmitter can time division duplex transmit communications over at least a subset of the signal paths and their associated RF filters.

摘要翻译： 用于实现具有接收路径性能分集的无线通信收发机的方法和装置。 收发器实现可被配置为空间分集接收路径的多个信号路径。 多个信号路径中的每一个包括不同的RF滤波器。 每个RF滤波器可被配置成提供不同的频率响应，特别是明显的干扰抑制曲线。 RF滤波器之一可被配置为基本上不提供带内干扰抑制。 每个附加的不同的RF滤波器可被配置为拒绝至少一个不同的带内干扰频率或频带。 分集接收机将来自每个滤波器输​​出的路径性能不同的信号相结合。 发射机可以在信号路径的至少一个子集及其相关的RF滤波器上进行时分双工传输通信。

公开(公告)号：US20110310948A1

公开(公告)日：2011-12-22

申请号：US12966905

申请日：2010-12-13

申请人： Sridhar Ramesh ,  James Qiu ,  Sugbong Kang

发明人： Sridhar Ramesh ,  James Qiu ,  Sugbong Kang

IPC分类号： H04W88/02

CPC分类号： H04B7/0845 ,  H04B1/16 ,  H04B7/0857 ,  H04B7/0885 ,  H04B7/12 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/03159 ,  H04L25/14 ,  H04L27/2649 ,  H04L2025/03414 ,  H04L2025/03426

摘要： A diversity receiver includes a first RF front end module for receiving a first RF signal, and frequency converting the first RF signal and outputting a first diversity signal, a second RF front end module for receiving a second RF signal, frequency converting the second RF signal and outputting a second diversity signal, a first converter for converting the first diversity signal to a first time-domain signal, a second converter for converting the second diversity signal to a second time-domain signal, a first transformer for translating the first time-domain signal to a first frequency-domain signal, a second transformer for translating the second time-domain signal to a second frequency-domain signal, a first pre-equalizer for equalizing the first frequency-domain signal, a second pre-equalizer for equalizing the second frequency-domain signal, and a combiner for combining the first and second pre-equalized frequency-domain signals. The diversity receiver further includes a channel estimator having a mirror window.

摘要翻译： 分集接收机包括用于接收第一RF信号的第一RF前端模块和对第一RF信号进行频率转换并输出第一分集信号，用于接收第二RF信号的第二RF前端模块，对第二RF信号进行频率转换 并输出第二分集信号，将第一分集信号转换为第一时域信号的第一转换器，将第二分集信号转换为第二时域信号的第二转换器， 域信号转换为第一频域信号;第二变压器，用于将第二时域信号转换为第二频域信号;第一预均衡器，用于均衡第一频域信号;第二预均衡器，用于均衡 第二频域信号，以及用于组合第一和第二预均衡的频域信号的组合器。 分集接收机还包括具有镜像窗口的信道估计器。

公开(公告)号：US08064556B2

公开(公告)日：2011-11-22

申请号：US11502178

申请日：2006-08-09

申请人： Parvathanathan Subrahmanya ,  Inyup Kang ,  Jia Fei ,  Rajesh Sundaresan

发明人： Parvathanathan Subrahmanya ,  Inyup Kang ,  Jia Fei ,  Rajesh Sundaresan

IPC分类号： H04B1/10

CPC分类号： H04B1/71057 ,  H04B7/0669 ,  H04B7/0673 ,  H04B7/0845 ,  H04L25/03044 ,  H04L25/03292 ,  H04L2025/03509

摘要： This disclosure describes equalization techniques for spread spectrum wireless communication. The techniques may involve estimating a channel impulse response, estimating channel variance, and selecting filter coefficients for an equalizer based on the estimated channel impulse response and the estimated channel variance. Moreover, in accordance with this disclosure, the channel variance estimation involves estimation of two or more co-variances for different received samples. Importantly, the equalizer is “fractionally spaced,” which means that the equalizer defines fractional filtering coefficients (filter taps), unlike conventional equalizers that presume that filter coefficients are defined at integer chip spacing. The techniques can allow the equalizer to account for antenna diversity, such as receive diversity, transmit diversity, or possibly both.

摘要翻译： 本公开描述了用于扩频无线通信的均衡技术。 这些技术可以包括基于所估计的信道脉冲响应和所估计的信道方差估计信道脉冲响应，估计信道方差，以及为均衡器选择滤波器系数。 此外，根据本公开，信道方差估计涉及对于不同接收样本的两个或多个协方差的估计。 重要的是，均衡器是“分数间隔”的，这意味着均衡器定义了分数滤波系数（滤波器抽头），不同于传统的均衡器，假设滤波器系数是以整数芯片间隔定义的。 这些技术可以允许均衡器考虑天线分集，例如接收分集，发射分集，或者可能两者。