公开(公告)号：US09503214B2

公开(公告)日：2016-11-22

申请号：US14500288

申请日：2014-09-29

申请人： BROADCOM CORPORATION

发明人： Matthew James Fischer ,  Vinko Erceg ,  Joonsuk Kim ,  Joseph Paul Lauer ,  Peiman Amini

IPC分类号： H04W74/00 ,  H04L1/00 ,  H04B7/06 ,  H04L1/06 ,  H04B7/04 ,  H04L5/00 ,  H04W72/04

CPC分类号： H04L1/0031 ,  H04B7/0452 ,  H04B7/0669 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0065 ,  H04L1/0618 ,  H04L1/0637 ,  H04L5/0007 ,  H04W72/042

摘要： Management frame map directed operational parameters within multiple user, multiple access, and/or MIMO wireless communications. A management frame map may be generated within and transmitted from a first wireless communication device to a group of other wireless communication devices. Thereafter, certain subsequently transmitted packets may be analyzed and processed by the receiving wireless communication devices based on that earlier received management frame map. One or more operational parameters are determined for a subsequently transmitted packet based on the previously received management frame map. The operational parameters govern the manner in which at least a portion of the subsequently transmitted packet is processed.

摘要翻译： 管理帧映射在多个用户，多个接入和/或MIMO无线通信中定向操作参数。 可以在第一无线通信设备内向其他无线通信设备的组中生成管理帧映射并从其发送。 此后，可以由接收无线通信设备基于先前收到的管理帧映射来分析和处理某些后续发送的分组。 基于先前接收到的管理帧映射，为随后发送的分组确定一个或多个操作参数。 操作参数控制随后传送的分组的至少一部分被处理的方式。

公开(公告)号：US20150016332A1

公开(公告)日：2015-01-15

申请号：US14500288

申请日：2014-09-29

申请人： BROADCOM CORPORATION

发明人： Matthew James Fischer ,  Vinko Erceg ,  Joonsuk Kim ,  Joseph Paul Lauer ,  Peiman Amini

IPC分类号： H04L1/00 ,  H04L1/06

CPC分类号： H04L1/0031 ,  H04B7/0452 ,  H04B7/0669 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0065 ,  H04L1/0618 ,  H04L1/0637 ,  H04L5/0007 ,  H04W72/042

摘要： Management frame map directed operational parameters within multiple user, multiple access, and/or MIMO wireless communications. A management frame map may be generated within and transmitted from a first wireless communication device to a group of other wireless communication devices. Thereafter, certain subsequently transmitted packets may be analyzed and processed by the receiving wireless communication devices based on that earlier received management frame map. One or more operational parameters are determined for a subsequently transmitted packet based on the previously received management frame map. The operational parameters govern the manner in which at least a portion of the subsequently transmitted packet is processed.

摘要翻译： 管理帧映射在多个用户，多个接入和/或MIMO无线通信中定向操作参数。 可以在第一无线通信设备内向其他无线通信设备的组中生成管理帧映射并从其发送。 此后，可以由接收无线通信设备基于先前收到的管理帧映射来分析和处理某些后续发送的分组。 基于先前接收到的管理帧映射，为随后发送的分组确定一个或多个操作参数。 操作参数控制随后传送的分组的至少一部分被处理的方式。

公开(公告)号：US20140105330A1

公开(公告)日：2014-04-17

申请号：US14137665

申请日：2013-12-20

申请人： The DIRECTV Group, Inc.

发明人： Mustafa Eroz ,  Lin-Nan Lee ,  Feng-Wen Sun

IPC分类号： H04B7/06 ,  H03M13/11

CPC分类号： H04B7/06 ,  H03M13/1102 ,  H03M13/255 ,  H04B7/04 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0606 ,  H04L1/0625 ,  H04L1/0637 ,  H04L5/0023 ,  H04L25/03898

摘要： Method and apparatus for implementing LDPC codes in an IEEE 802.11 standard system configured to operate in a Multiple-Input, Multiple-Output (MIMO) schema. A method in accordance with the present invention comprises defining a base LDPC code, having a length equal to an integer number of data carriers in an ODFM symbol, transmitting the base LDPC code over a plurality of sub-carriers, wherein the base code is transmitted at an expected phase on sub-carriers specified by the IEEE 802.11 standard system, and transmitting the base LDPC code on other sub-carriers than those specified by the IEEE 802.11 standard system, wherein the base LDPC code on the other sub-carriers is transmit offset in phase from the base LDPC code on the specified sub-carriers.

摘要翻译： IEEE 802.11标准系统中用于实施LDPC码的方法和装置，其被配置为在多输入多输出（MIMO）模式中操作。 根据本发明的方法包括定义具有等于ODFM符号中的整数数据载波的长度的基本LDPC码，在多个子载波上发送基本LDPC码，其中发送基本码 在由IEEE 802.11标准系统指定的子载波上的期望阶段，并且在与由IEEE 802.11标准系统指定的那些子载波之外的其他子载波上发送基本LDPC码，其中其他子载波上的基本LDPC码被发送 在指定子载波上与基本LDPC码相位偏移。

公开(公告)号：US07894548B2

公开(公告)日：2011-02-22

申请号：US11217818

申请日：2005-09-01

申请人： Jay Rodney Walton ,  John W. Ketchum ,  Mark S. Wallace ,  Steven J. Howard

发明人： Jay Rodney Walton ,  John W. Ketchum ,  Mark S. Wallace ,  Steven J. Howard

IPC分类号： H04L27/04

CPC分类号： H04L1/0668 ,  H04B7/0615 ,  H04B7/0617 ,  H04B7/0667 ,  H04B7/0678 ,  H04B7/068 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/12 ,  H04J13/004 ,  H04L1/0041 ,  H04L1/0606 ,  H04L1/0625 ,  H04L1/0637 ,  H04L5/0023 ,  H04L27/2626

摘要： Techniques for transmitting data using a combination of transmit diversity schemes are described. These transmit diversity schemes include spatial spreading, continuous beamforming, cyclic delay diversity, space-time transmit diversity (STTD), space-frequency transmit diversity (SFTD), and orthogonal transmit diversity (OTD). A transmitting entity processes one or more (ND) data symbol streams based on a transmit diversity scheme (e.g., STTD, SFTD, or OTD) to generate multiple (NC) coded symbol streams. Each data symbol stream may be sent as a single coded symbol stream or as multiple (e.g., two) coded symbol streams using STTD, SFTD, or OTD. The transmitting entity may perform spatial spreading on the NC coded symbol streams with different matrices to generate multiple (NT) transmit symbol streams for transmission from NT antennas. Additionally or alternatively, the transmitting entity may perform continuous beamforming on the NT transmit symbol streams in either the time domain or the frequency domain.

摘要翻译： 描述了使用发射分集方案的组合来发送数据的技术。 这些发射分集方案包括空间扩展，连续波束成形，循环延迟分集，时空发射分集（STTD），空频发射分集（SFTD）和正交发射分集（OTD）。 发送实体基于发射分集方案（例如，STTD，SFTD或OTD）处理一个或多个（ND）数据符号流，以生成多个（NC）编码符号流。 每个数据符号流可以作为单个编码符号流或使用STTD，SFTD或OTD作为多个（例如，两个）编码符号流发送。 发送实体可以对具有不同矩阵的NC编码符号流执行空间扩展，以生成用于从NT个天线发送的多个（NT）个发送符号流。 附加地或替代地，发射实体可以在时域或频域中的NT个发射符号流上执行连续波束成形。

公开(公告)号：US07882413B2

公开(公告)日：2011-02-01

申请号：US11335957

申请日：2006-01-19

申请人： Hangjun Chen ,  Alexander M. Haimovich

发明人： Hangjun Chen ,  Alexander M. Haimovich

IPC分类号： H03M13/00

CPC分类号： H04L1/0625 ,  H04B7/0669 ,  H04L1/005 ,  H04L1/0066 ,  H04L1/0637

摘要： Time-space encoding and/or decoding may employ time variant linear transformations. Turbo coding and/or decoding may be used in conjunction with the use of time variant linear transformations. Such time variant linear transformations may be unitary in nature.

摘要翻译： 时空编码和/或解码可以采用时变线性变换。 Turbo编码和/或解码可以与使用时变线性变换结合使用。 这种时变线性变换本质上可以是一体的。

公开(公告)号：US20100166099A1

公开(公告)日：2010-07-01

申请号：US12594570

申请日：2008-03-27

申请人： Hikmet Sari ,  Serdar Sezginer

发明人： Hikmet Sari ,  Serdar Sezginer

IPC分类号： H04B7/02 ,  H04L27/00

CPC分类号： H04L1/0631 ,  H04L1/0637

摘要： An embodiment of a method for transmitting a sequence of symbols through at least a channel in a wireless communication system comprises at least the steps of: forming a coding matrix (MC) with said sequence of symbols, each component of the coding matrix (MC) being a linear combination of two symbols among a first, a second, a third, and a fourth symbol (s1, s2, s3, s4), transmitting a first and a second components of a first column and of a second column of the coding matrix through a first and a second transmit antennas (Tx1, Tx2), at a first and a second time slot (T1, T2). The coding matrix (MC) is defined as: ( as 1 + bs 3 - cs 2 * - ds 4 * as 2 + bs 4 cs 1 * + ds 3 * ) , a, b, c, d being complex numbers of modulus 1.

摘要翻译： 至少以下步骤：通过所述编码矩阵（MC）的每个分量形成具有所述符号序列的编码矩阵（MC）的步骤，用于在无线通信系统中通过至少一个信道发送符号序列的方法的实施例， 是在第一，第二，第三和第四符号（s1，s2，s3，s4）中的两个符号的线性组合，发送编码的第一列和第二列的第一和第二分量 通过第一和第二发射天线（Tx1，Tx2）在第一和第二时隙（T1，T2）处的矩阵。 编码矩阵（MC）定义为：（1 + bs 3 - cs 2 * - ds 4 * as 2 + bs 4 cs 1 * + ds 3 *），a，b，c，d是复数的模数 1。

公开(公告)号：US07660363B2

公开(公告)日：2010-02-09

申请号：US11278270

申请日：2006-03-31

申请人： Ignacio Berenguer ,  Xiaodong Wang ,  Mohammad Madihian

发明人： Ignacio Berenguer ,  Xiaodong Wang ,  Mohammad Madihian

IPC分类号： H04B7/02

CPC分类号： H04L1/0637 ,  H04L25/03242 ,  H04L2025/03426

摘要： A lattice space time coding arrangement for transmission systems is disclosed which enables construction of lattice space time codes with improved error rate performance for arbitrary receiver structures.

摘要翻译： 公开了一种用于传输系统的格空间时间编码装置，其能够构建具有改进的任意接收机结构的错误率性能的格子空间时间码。

公开(公告)号：US20070283210A1

公开(公告)日：2007-12-06

申请号：US11694241

申请日：2007-03-30

申请人： Narayan Prasad ,  Xiaodong Wang ,  Mohammad Madihian

发明人： Narayan Prasad ,  Xiaodong Wang ,  Mohammad Madihian

IPC分类号： H03M13/00

CPC分类号： H03M13/01 ,  H04L1/0631 ,  H04L1/0637

摘要： Methods and apparatus for designing spherical lattice codebooks for use in data transmission systems are provided. A spherical lattice codebook is constructed by determining the channel statistics of one or more channels, which can be accomplished by observing a sufficiently large set of channel realizations. After determining the channel statistics, an expression for the error probability of the decoder or expressions for bounds on the error probability and expressions for the corresponding gradients are determined. The gradient is then used in an optimization technique to produce a spherical lattice codebook which is subsequently used for transmission.

摘要翻译： 提供了用于数据传输系统中使用的球面晶格码本的方法和装置。 通过确定一个或多个信道的信道统计量来构造球面晶格码本，其可以通过观察足够大的信道实现集来实现。 在确定信道统计后，确定解码器的错误概率或对于对应梯度的误差概率和表达式的边界的表达式的表达式。 然后将梯度用于优化技术中以产生随后用于传输的球形晶格码本。

公开(公告)号：US07170954B2

公开(公告)日：2007-01-30

申请号：US10077849

申请日：2002-02-20

申请人： Babak Hassibi ,  Bertrand M. Hochwald

发明人： Babak Hassibi ,  Bertrand M. Hochwald

IPC分类号： H04L27/00 ,  H04B7/00 ,  H04J11/00

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。

公开(公告)号：US07110464B2

公开(公告)日：2006-09-19

申请号：US11245239

申请日：2005-10-06

申请人： Hesham El-Gamal ,  A. Roger Hammons, Jr.

发明人： Hesham El-Gamal ,  A. Roger Hammons, Jr.

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04L1/0059 ,  H04L1/0071 ,  H04L1/0606 ,  H04L1/0618 ,  H04L1/0637 ,  H04L27/18

摘要： A communication system for transmitting encoded signals over a communication channel is disclosed. The system includes a transmitter, which has a source that is configured to output a message signal, and an encoder that is configured to generate a code word in response to the message signal. The code word is based upon a stacking construction that is generalized for the communication channel. The communication channel is characterized as a multi-input multi-output (MIMO) block fading channel. The transmitter also includes a modulator that is configured to modulate the code word for transmission over the communication channel. Further, the transmitter includes a plurality of transmit antennas that are configured to transmit the modulated code word over the communication channel. The system also includes a receiver, which has a plurality of receive antennas. The receiver is configured to receive the transmitted code word via the plurality of receive antennas.