公开(公告)号：US20060176972A1

公开(公告)日：2006-08-10

申请号：US11110241

申请日：2005-04-20

申请人： Joonsuk Kim ,  Carlos Aldana ,  Christopher Hansen

发明人： Joonsuk Kim ,  Carlos Aldana ,  Christopher Hansen

IPC分类号： H04L1/02

CPC分类号： H04L1/0009 ,  H04B7/02 ,  H04L1/0003 ,  H04L1/0025 ,  H04L1/0026

摘要： Aspects of a method and system for an optional closed loop mechanism with adaptive modulations for a multiple input multiple output (MIMO) WLAN system are provided. One aspect of the system may comprise a receiver that may select, for a plurality of spatial streams, a modulation type and/or coding rate. The receiver may communicate a message, via an RF channel, that comprises a plurality of modulation types and/or coding rates. The receiver may configure for receiving subsequent data based on at least one selected modulation type and/or coding rate. Another aspect of the system may comprise a transmitter that may receive a message, via an RF channel, that comprises a specification of, for a plurality of spatial streams, a plurality of modulation types and/or coding rates. The system may configure for transmitting subsequent data based on at least one of the received modulation types and/or coding rates.

摘要翻译： 提供了一种用于多输入多输出（MIMO）WLAN系统的具有自适应调制的可选闭环机制的方法和系统的方面。 该系统的一个方面可以包括可以为多个空间流选择调制类型和/或编码速率的接收机。 接收机可以经由包括多个调制类型和/或编码速率的RF信道来传送消息。 接收机可以被配置为基于至少一个选择的调制类型和/或编码速率来接收后续数据。 系统的另一方面可以包括可以经由RF信道接收消息的发射机，其包括对于多个空间流的多个调制类型和/或编码速率的规范。 该系统可以被配置为基于所接收的调制类型和/或编码率中的至少一个来发送后续数据。

公开(公告)号：US20060126752A1

公开(公告)日：2006-06-15

申请号：US11052353

申请日：2005-02-07

申请人： Christopher Hansen ,  Carlos Aldana ,  Joonsuk Kim

发明人： Christopher Hansen ,  Carlos Aldana ,  Joonsuk Kim

IPC分类号： H04L1/02 ,  H04B7/02

CPC分类号： H04B7/0417 ,  H04B7/0426 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0634 ,  H04B7/0663 ,  H04B7/0689 ,  H04B7/0691 ,  H04L1/0001 ,  H04L1/0025 ,  H04L1/0028 ,  H04L1/0029 ,  H04L1/06 ,  H04L1/0681 ,  H04L1/0693

摘要： A method and system for frame formats for MIMO channel measurement exchange is provided. Aspects of a method for communicating information in a communication system may comprise transmitting data via a plurality of radio frequency (RF) channels utilizing a plurality of transmitting antenna, receiving feedback information via at least one of a plurality of RF channels, and modifying a transmission mode based on the feedback information. Aspects of a method for communicating information in a communication system may also comprise receiving data via a plurality of receiving antenna, transmitting feedback information via at least one of the plurality of RF channels, and requesting modification of a transmission mode for the received data in transmitted response messages comprising the feedback information.

公开(公告)号：US20060239374A1

公开(公告)日：2006-10-26

申请号：US11237341

申请日：2005-09-28

申请人： Carlos Aldana ,  Joonsuk Kim

发明人： Carlos Aldana ,  Joonsuk Kim

IPC分类号： H04B7/02

CPC分类号： H04B7/0617 ,  H04B7/0417 ,  H04B7/0634

摘要： A method for feeding back transmitter beamforming information from a receiving wireless communication device to a transmitting wireless communication device includes a receiving wireless communication device receiving a preamble sequence from the transmitting wireless device. The receiving wireless device estimates a channel response based upon the preamble sequence and then determines an estimated transmitter beamforming unitary matrix based upon the channel response and a receiver beamforming unitary matrix. The receiving wireless device then decomposes the estimated transmitter beamforming unitary matrix to produce the transmitter beamforming information and then wirelessly sends the transmitter beamforming information to the transmitting wireless device. The receiving wireless device may transform the estimated transmitter beamforming unitary matrix using a QR decomposition operation such as a Givens Rotation operation to produce the transformer beamforming information.

公开(公告)号：US08416862B2

公开(公告)日：2013-04-09

申请号：US11237341

申请日：2005-09-28

申请人： Carlos Aldana ,  Joonsuk Kim

发明人： Carlos Aldana ,  Joonsuk Kim

IPC分类号： H04K1/10

CPC分类号： H04B7/0617 ,  H04B7/0417 ,  H04B7/0634

摘要： A method for feeding back transmitter beamforming information from a receiving wireless communication device to a transmitting wireless communication device includes a receiving wireless communication device receiving a preamble sequence from the transmitting wireless device. The receiving wireless device estimates a channel response based upon the preamble sequence and then determines an estimated transmitter beamforming unitary matrix based upon the channel response and a receiver beamforming unitary matrix. The receiving wireless device then decomposes the estimated transmitter beamforming unitary matrix to produce the transmitter beamforming information and then wirelessly sends the transmitter beamforming information to the transmitting wireless device. The receiving wireless device may transform the estimated transmitter beamforming unitary matrix using a QR decomposition operation such as a Givens Rotation operation to produce the transformer beamforming information.

摘要翻译： 将发射机波束形成信息从接收无线通信设备反馈到发射无线通信设备的方法包括从发射无线设备接收前同步码序列的接收无线通信设备。 接收无线设备基于前导序列估计信道响应，然后基于信道响应和接收机波束成形单位矩阵来确定估计的发射机波束成形单位矩阵。 接收无线设备然后分解估计的发射机波束成形单位矩阵以产生发射机波束形成信息，然后将发射机波束成形信息无线发送到发射无线设备。 接收无线设备可以使用诸如Givens旋转操作之类的QR分解操作来变换估计的发射机波束成形单位矩阵，以产生变换器波束形成信息。

公开(公告)号：US08577302B2

公开(公告)日：2013-11-05

申请号：US11342427

申请日：2006-01-30

申请人： Carlos Aldana

发明人： Carlos Aldana

IPC分类号： H04B7/00 ,  H04B7/14 ,  H04B15/00 ,  H04M1/00 ,  H01Q3/00

CPC分类号： H04B7/0417 ,  H01Q3/30

摘要： The disclosed systems and methods achieve improved communication by periodically sending sounding packets from a transmitter; feeding back, from a receiver, the change in beamforming estimation according to reception of the sounding packets; and utilizing the change in beamforming estimation to produce transmitter beamforming.

摘要翻译： 所公开的系统和方法通过周期性地发送来自发射机的探测分组来实现改进的通信; 从接收器反馈根据接收到的探测包的波束成形估计的变化; 并利用波束成形估计的变化来产生发射机波束形成。

公开(公告)号：US20070117590A1

公开(公告)日：2007-05-24

申请号：US11342427

申请日：2006-01-30

申请人： Carlos Aldana

发明人： Carlos Aldana

IPC分类号： H04M1/00

CPC分类号： H04B7/0417 ,  H01Q3/30

摘要： The disclosed systems and methods achieve improved communication by periodically sending sounding packets from a transmitter; feeding back, from a receiver, the change in beamforming estimation according to reception of the sounding packets; and utilizing the change in beamforming estimation to produce transmitter beamforming.

摘要翻译： 所公开的系统和方法通过周期性地发送来自发射机的探测分组来实现改进的通信; 从接收器反馈根据接收到的探测包的波束成形估计的变化; 并利用波束成形估计的变化来产生发射机波束形成。

公开(公告)号：US06829307B1

公开(公告)日：2004-12-07

申请号：US09513716

申请日：2000-02-24

申请人： Louise Min Chuin Hoo ,  Atul Arvind Salvekar ,  Carlos Aldana ,  John M. Cioffi ,  Peter Chow ,  James Carlo

发明人： Louise Min Chuin Hoo ,  Atul Arvind Salvekar ,  Carlos Aldana ,  John M. Cioffi ,  Peter Chow ,  James Carlo

IPC分类号： H04K110

CPC分类号： H04L5/006 ,  H04L1/0025 ,  H04L1/004 ,  H04L5/0007 ,  H04L5/0042 ,  H04L5/0046 ,  H04L5/0053 ,  H04L5/0085 ,  H04L5/0096

摘要： Methods and devices for adaptively changing a parameter (such as sub-carrier bit allocation and/or gain) in a multi-carrier communication signal are described. In a method aspect, a unit that determines a need for a change sends an express change request to a second unit. The change request identifies one or more specific sub-carrier carrier to be altered and a desired value for the parameter to be changed for each identified sub-carrier. The requesting unit then monitors the communication signal it receives to determine whether the requested change has been implemented. The determination of whether the requested change has been implemented is based at least in part upon an analysis of a portion of the received communication signal that was intended to be changed. In another aspect of the invention, the change request command includes a header, a control field, at least one sub-carrier identifier, at least one desired parameter value indicator, and an error field. The header identifies the command as a change request command. The control field includes a tone count that indicates the number of tones to be altered. Each sub-carrier identifier identifies a specific sub-carrier to be altered and each desired parameter value indicator identifies a desired parameter value for its associated sub-carrier. The error field permits the unit receiving the change request to detect whether there is an error in its interpretation of the change request command.

摘要翻译： 描述了用于在多载波通信信号中自适应地改变参数（例如子载波比特分配和/或增益）的方法和装置。 在方法方面，确定需要改变的单元向第二单元发送快速更改请求。 改变请求识别要改变的一个或多个特定副载波载波和要为每个识别的子载波改变的参数的期望值。 然后，请求单元监视其接收到的通信信号，以确定所请求的改变是否已被实现。 至少部分地基于对旨在改变的所接收的通信信号的一部分的分析来确定所请求的改变是否被实现。 在本发明的另一方面，改变请求命令包括报头，控制字段，至少一个子载波标识符，至少一个期望参数值指示符和错误字段。 标题将该命令标识为更改请求命令。 控制字段包括指示要改变的音调数量的音调计数。 每个子载波标识符识别要改变的特定子载波，并且每个期望的参数值指示符识别其相关联的子载波的期望参数值。 错误字段允许接收改变请求的单元检测其对改变请求命令的解释是否存在错误。

公开(公告)号：US20120213056A1

公开(公告)日：2012-08-23

申请号：US13460628

申请日：2012-04-30

申请人： Carlos Aldana ,  Vinko Erceg ,  Matthew J. Fischer

发明人： Carlos Aldana ,  Vinko Erceg ,  Matthew J. Fischer

IPC分类号： H04L29/14 ,  H04W8/30 ,  H04L12/26

CPC分类号： H04B7/0802 ,  H04B7/0413 ,  H04L1/1635 ,  H04L1/1657

摘要： Aspects of a method and system for a transmitting antenna selection failure recover mode are presented. Aspects of the system may include a transmitting mobile terminal that enables selection of a sequence of protocol data units (PDU), for example a sequence of sounding frames, which may be transmitted during an antenna selection procedure. During transmission of the selected PDU sequence, the transmitting mobile terminal may receive an antenna selection failure indication frame. The transmitting mobile terminal may enable retransmission of at least one previously transmitted PDU in the PDU sequence based on the failure indication. Transmission of subsequent PDUs in the PDU sequence may resume after the retransmission. Alternatively, upon receipt of the failure indication frame the transmitting mobile terminal may restart the selected frame sequence from the beginning, or may select a subsequent PDU frame sequence.

摘要翻译： 提出了一种发射天线选择故障恢复模式的方法和系统。 系统的方面可以包括能够选择协议数据单元序列（PDU）的发射移动终端，例如可以在天线选择过程期间发射的探测帧序列。 在所选择的PDU序列的发送期间，发送移动终端可以接收天线选择失败指示帧。 基于故障指示，发送移动终端可以使PDU序列中的至少一个先前发送的PDU能够重传。 PDU序列中的后续PDU的传输可以在重传之后恢复。 或者，在接收到故障指示帧时，发送移动终端可以从开始重新启动所选择的帧序列，或者可以选择后续的PDU帧序列。

公开(公告)号：US08000223B2

公开(公告)日：2011-08-16

申请号：US11021266

申请日：2004-12-23

申请人： Rajendra Tushar Moorti ,  Christopher Young ,  Carlos Aldana

发明人： Rajendra Tushar Moorti ,  Christopher Young ,  Carlos Aldana

IPC分类号： H04J11/00

CPC分类号： H04B1/7075

摘要： Methods and systems for processing multiple preambles for a wireless signal are disclosed herein. Aspects of the method may comprise selecting a portion of a preamble, and shifting the selected portion of the preamble to generate a plurality of subsequent preambles. The preamble may comprise a legacy preamble and/or an 802.11(n) preamble. The selected portion of the preamble may comprise a short training sequence. The shifting may comprise circular shifting. The circular shifting may comprise forward circular shifting and/or backwards circular shifting. The generated plurality of subsequent preambles may be transmitted via a plurality of antennas. A phase roll may be added to the selected portion of the preamble to generate the plurality of subsequent preambles.

摘要翻译： 本文公开了用于处理无线信号的多个前同步码的方法和系统。 方法的方面可以包括选择前导码的一部分，以及移动所述前导码的所选部分以生成多个后续前导码。 前导码可以包括传统前导码和/或802.11（n）前导码。 前导码的所选部分可以包括短训练序列。 移位可以包括循环移位。 圆形切换可以包括向前圆形移位和/或向后循环移位。 所生成的多个后续前导码可以经由多个天线发送。 相位卷可以被添加到前导码的选定部分以生成多个后续前导码。

公开(公告)号：US07693234B2

公开(公告)日：2010-04-06

申请号：US11359460

申请日：2006-02-23

申请人： Carlos Aldana

发明人： Carlos Aldana

IPC分类号： H04B7/02 ,  H04L27/00

CPC分类号： H04L27/2601 ,  H03M13/271 ,  H04L1/0003 ,  H04L1/0071 ,  H04L1/04 ,  H04L1/06

摘要： The method and apparatus in accordance with the present invention receives bits, writes the bits row-by-row in a matrix, reads the bits column-by-column from the matrix, groups and rotates the bits read column-by-column from the matrix so as to evenly separate the bits in position, frequency, space over one symbol period.

摘要翻译： 根据本发明的方法和装置接收比特，逐行逐行写入比特，从矩阵逐列读取比特，分组并逐列地从 矩阵，以便在一个符号周期内均匀分离位置，频率，空间中的位。