-
公开(公告)号：US07693228B2
公开(公告)日：2010-04-06
申请号：US11298157
申请日：2005-12-09
申请人： Carlos Aldana , Jason A. Trachewsky
发明人： Carlos Aldana , Jason A. Trachewsky
IPC分类号： H04B7/02
CPC分类号： H04L25/0204
摘要： A general architecture scheme to perform channel estimation on orthogonal transmissions for any number of transmitting antennas present. Generally, the channel estimation is applicable for wireless communications in a MIMO system.
摘要翻译： 在任何数量的发射天线的正交传输上执行信道估计的一般架构方案。 通常，信道估计适用于MIMO系统中的无线通信。
-
公开(公告)号：US08964895B2
公开(公告)日：2015-02-24
申请号：US13245362
申请日：2011-09-26
申请人： Christopher J. Hansen , Jason A. Trachewsky , Nambirajan Seshadri , Kelly Brian Cameron , Hau Thien Tran , Ba-Zhong Shen
发明人： Christopher J. Hansen , Jason A. Trachewsky , Nambirajan Seshadri , Kelly Brian Cameron , Hau Thien Tran , Ba-Zhong Shen
CPC分类号： H04W4/18 , H04L1/0057 , H04L1/0059 , H04L1/0065 , H04L1/0066 , H04L1/0068 , H04L1/0071 , H04L1/0618 , H04L25/03866 , H04L27/2601 , H04W84/12 , H04W88/10
摘要： A wireless local area network (WLAN) transmitter includes a baseband processing module and a plurality of radio frequency (RF) transmitters. The processing module selects one of a plurality of modes of operation based on a mode selection signal. The processing module determines a number of transmit streams based on the mode selection signal. The processing of the data further continues by converting encoded data into streams of symbols in accordance with the number of transmit streams and the mode selection signal. A number of the plurality of RF transmitters are enabled based on the mode selection signal to convert a corresponding one of the streams of symbols into a corresponding RF signal such that a corresponding number of RF signals is produced.
摘要翻译： 无线局域网（WLAN）发射机包括基带处理模块和多个射频（RF）发射机。 处理模块基于模式选择信号选择多种操作模式中的一种。 处理模块基于模式选择信号确定多个发送流。 根据发送流的数量和模式选择信号，将编码数据转换为符号流，继续处理数据。 基于模式选择信号启用多个RF发射机的数量，以将符号流中的相应一个码流转换为对应的RF信号，从而产生相应数量的RF信号。
-
公开(公告)号：US08576695B2
公开(公告)日：2013-11-05
申请号：US13593745
申请日：2012-08-24
申请人： Christopher J. Hansen , Jason A. Trachewsky , Rajendra Tushar Moorti , Matthew James Fischer , Christopher Young
发明人： Christopher J. Hansen , Jason A. Trachewsky , Rajendra Tushar Moorti , Matthew James Fischer , Christopher Young
IPC分类号： H04J3/06
CPC分类号： H04B7/0667
摘要： A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for each transmit antenna, generating a carrier detect field. The method continues by, for a first grouping of the transmit antennas, generating a first guard interval, and at least one channel sounding field. Continuing, the method applies cyclical shift prior to transmission via the first grouping of the transmit antennas. When the MIMO wireless communication includes more than the first grouping of the transmit antennas, for another grouping of the transmit antennas. For the another grouping of the transmit antennas, generating at least one other channel sounding field. The method proceeds by generating the first guard interval prior to the at least one other channel sounding field, and applying another cyclical shift prior to transmission via the another grouping of the transmit antennas.
摘要翻译： 用于生成多输入多输出（MIMO）无线通信的帧的前同步码的方法由每个发射天线开始，生成载波检测场。 对于发射天线的第一组，产生第一保护间隔和至少一个信道探测场，继续该方法。 继续地，该方法在通过发射天线的第一组发射之前应用周期性移位。 当MIMO无线通信包括多于发射天线的第一组时，对于另一组发射天线。 对于发射天线的另一组，产生至少一个其它信道探测场。 该方法通过在至少一个其它信道探测场之前产生第一保护间隔，并且在经由另一组发射天线的传输之前应用另一个循环移位来进行。
-
公开(公告)号：US08478336B2
公开(公告)日：2013-07-02
申请号：US13589267
申请日：2012-08-20
IPC分类号： H04M1/00
CPC分类号： H04B1/0003
摘要： Analog signal paths are utilized between a baseband processor and a radio front end to support high throughput communications for a multiple in multiple out radio transceiver that support communications over two or more antennas. Specifically, analog differential I and Q path communication signals are exchanged between a radio front end core and a baseband processor to maximize throughput capacity for high data rate signals. Along the same lines, the impedances of traces and the interface are matched to reduce I/Q imbalance.
-
5.发明申请Feedback of Channel Information in a Closed Loop Beamforming Wireless Communication System 有权闭环波束形成无线通信系统中信道信息的反馈公开(公告)号：US20130129000A1
公开(公告)日：2013-05-23
申请号：US13729881
申请日：2012-12-28
IPC分类号： H04W80/00
CPC分类号： H04W80/00 , H04B7/0421 , H04B7/0617 , H04B7/0628 , H04B7/0634 , H04L1/0026 , H04L1/0045 , H04L1/0068 , H04L1/06 , H04L27/2601
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.
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。
-
公开(公告)号：US08351399B2
公开(公告)日：2013-01-08
申请号：US12828561
申请日：2010-07-01
申请人： Christopher J. Hansen , Jason A. Trachewsky , R. Tushar Moorti , Matthew J. Fischer , Christopher Young
发明人： Christopher J. Hansen , Jason A. Trachewsky , R. Tushar Moorti , Matthew J. Fischer , Christopher Young
IPC分类号： H04Q7/00
CPC分类号： H04W72/044 , H04L1/0001 , H04L1/0002 , H04L1/0003 , H04L1/06 , H04L1/1867 , H04L25/0226 , H04L25/0228 , H04L27/2613 , H04W84/12
摘要： A method for multiple input multiple output wireless communication begins by determining protocols of wireless communication devices within a proximal region. The method continues by determining whether the protocols of the wireless communication devices within the proximal region are of a like protocol. The method continues by determining the number of transmit antennas. The method continues, when the protocols of the wireless communication devices within the proximal region are of the like protocol, formatting a preamble of a frame of the wireless communication utilizing at least one of cyclic shifting of symbols, cyclic shifting of tones, sparse tone allocation, and sparse symbol allocation based on the number of transmit antennas.
摘要翻译： 多输入多输出无线通信的方法通过确定近端区域内的无线通信设备的协议来开始。 该方法通过确定近端区域内的无线通信设备的协议是否具有类似协议来继续。 该方法通过确定发射天线的数量继续。 该方法继续，当近端区域内的无线通信设备的协议类似协议时，利用符号的循环移位，音调的循环移位，稀疏音调配置中的至少一个来格式化无线通信的帧的前导码 ，以及基于发射天线数量的稀疏符号分配。
-
7.发明授权Low complexity communication device employing in-place constructed LDPC (low density parity check) code 有权采用就地构造的LDPC（低密度奇偶校验）码的低复杂度通信设备公开(公告)号：US08341487B2
公开(公告)日：2012-12-25
申请号：US12769818
申请日：2010-04-29
IPC分类号： H03M13/00
CPC分类号： H03M13/1102 , H03M13/033 , H03M13/1134 , H03M13/1137 , H03M13/116 , H03M13/1185 , H03M13/1188 , H03M13/618 , H03M13/6362 , H03M13/6393 , H03M13/6502 , H03M13/6516 , H03M13/6527 , H04L1/005 , H04L1/0057
摘要： Low complexity communication device employing in-place constructed LDPC (Low Density Parity Check) code. Intelligent design of LDPC codes having similar characteristics there between allows for a very efficient hardware implementation of a communication device that is operative to perform decoding of more than one type of LDPC coded signals. A common basis of decoder hardware (e.g., decoder circuitry) is employed when decoding all of the various types of LDPC coded signals that such a communication device can decode. However, all of the decoder hardware is only employed to decode signals corresponding to the lowest code rate LDPC code supported by the communication device. A first subset of the decoder hardware is employed to decode signals corresponding to the second to lowest code rate LDPC code, a second subset (being less than the first subset) is employed to decode signals corresponding to the third to lowest code rate LDPC code, etc.
摘要翻译： 低复杂度通信设备采用就地构造的LDPC（低密度奇偶校验）码。 具有相似特征的LDPC码的智能设计允许可操作地执行多于一种类型的LDPC编码信号的解码的通信设备的非常有效的硬件实现。 在解码这种通信设备可以解码的各种类型的LDPC编码信号的全部时，采用解码器硬件（例如，解码器电路）的通用基础。 然而，所有解码器硬件仅用于对与由通信设备支持的最低码率LDPC码相对应的信号进行解码。 采用解码器硬件的第一子集来解码与第二至第二码率LDPC码相对应的信号，采用第二子集（小于第一子集）来对与第三至第二码率LDPC码相对应的信号进行解码， 等等
-
公开(公告)号：US08284867B2
公开(公告)日：2012-10-09
申请号：US13239301
申请日：2011-09-21
IPC分类号： H04L27/00
CPC分类号： H04B7/0613
摘要： A preamble of a frame for a multiple input multiple output (MIMO) wireless communication for a first transmit antenna of the MIMO communication includes a legacy preamble portion in accordance with a legacy wireless communication protocol. The preamble of the frame for the MIMO wireless communication for the first transmit antenna also includes a current protocol preamble portion in accordance with a protocol of the MIMO wireless communication. The preamble of a frame for at least a second antenna of the MIMO communication includes a cyclically shifted legacy preamble portion for the frame. The preamble of the frame for the MIMO wireless communication for the second transmit antenna also includes a second current protocol preamble portion in accordance with a protocol of the MIMO wireless communication.
摘要翻译： 用于MIMO通信的第一发射天线的多输入多输出（MIMO）无线通信的帧的前导码包括根据传统无线通信协议的传统前导码部分。 用于第一发射天线的MIMO无线通信的帧的前导码还包括根据MIMO无线通信的协议的当前协议前同步码部分。 用于MIMO通信的至少第二天线的帧的前导码包括用于该帧的循环移位的传统前同步码部分。 用于第二发射天线的MIMO无线通信的帧的前导码还包括根据MIMO无线通信的协议的第二当前协议前同步码部分。
-
9.发明申请公开(公告)号：US20120243494A1
公开(公告)日：2012-09-27
申请号：US13492291
申请日：2012-06-08
申请人： Jason A. Trachewsky
发明人： Jason A. Trachewsky
摘要： Provided is operation of a device in a plurality of frequency bands. A packet based network selects a frequency band of operation by determining a quality indicator. The WLAN further selects a communication protocol. WLAN devices include a baseband processor interface and a first radio for receiving the digital data and for transmitting RF signals in first and second frequency bands of a plurality of frequency bands, and for producing corresponding digital data to the baseband processor interface.
摘要翻译： 提供了多个频带中的设备的操作。 基于分组的网络通过确定质量指标来选择操作频带。 WLAN进一步选择通信协议。 WLAN设备包括基带处理器接口和用于接收数字数据并用于在多个频带的第一和第二频带中发送RF信号的第一无线电装置，以及用于向基带处理器接口产生相应的数字数据。
-
10.发明授权Method and system for distributed infrastructure for streaming data via multiple access points 有权用于通过多个接入点流式传输数据的分布式基础设施的方法和系统公开(公告)号：US08255558B2
公开(公告)日：2012-08-28
申请号：US13404554
申请日：2012-02-24
CPC分类号： H04W8/22 , H04L1/0003 , H04L1/0009 , H04L65/4092 , H04L65/601 , H04L65/80 , H04L67/04 , H04L69/14 , H04L2001/0092
摘要： Methods and systems for distributed infrastructure for streaming data via multiple access points. Aspects of one method may include apportioning multimedia information among a plurality of transmitting devices based on feedback channel information received from a destination receiving device by, for example, a transmission controller device. The transmitting devices may transmit the multimedia information to the destination receiving device. A transmitting device that may not be apportioned multimedia information may transmit a probing signal. The destination receiving device may generate feedback channel information for a transmitting device, for example, based on the multimedia information or the probing signal received from the respective transmitting device. The apportioning of the multimedia information may be dynamically adjusted based on updated feedback channel information received from the destination receiving device.
摘要翻译： 用于通过多个接入点流式传输数据的分布式基础设施的方法和系统。 一种方法的方面可以包括基于通过例如传输控制器设备从目的地接收设备接收的反馈信道信息来在多个发送设备之间分配多媒体信息。 发送设备可以将多媒体信息发送到目的地接收设备。 可以不分配多媒体信息的发送设备可以发送探测信号。 目的地接收装置可以例如基于从各个发送装置接收的多媒体信息或探测信号，生成发送装置的反馈信道信息。 可以基于从目的地接收设备接收到的更新的反馈信道信息来动态调整多媒体信息的分配。
-
-
-
-
-
-
-
-
-
搜索结果
187 条记录 (耗时 0.037 秒)
