Modified preamble for programmable transmitter
    81.
    发明授权
    Modified preamble for programmable transmitter 有权
    可编程发射机的修改前导码

    公开(公告)号:US08170504B2

    公开(公告)日:2012-05-01

    申请号:US13116227

    申请日:2011-05-26

    IPC分类号: H04B1/04

    摘要: A programmable transmitter generates a frame preamble to train a receiver with respect to a communication link format that corresponds to a transmission mode wherein the transmission mode may comprise transmitting the communication link over one or more antennas. Generally, the invention includes generating a preamble with an arrangement that depends upon whether a Greenfield (high data rate) or mixed mode transmission is to occur and that depends upon a number of spatial streams that are to be generated. One format for high data rate transmission includes a short training sequence, a long training sequence and a signal field. The mixed mode transmission further includes a legacy prefix.

    摘要翻译: 可编程发射机产生帧前同步码,以针对对应于传输模式的通信链路格式来训练接收机,其中传输模式可以包括通过一个或多个天线发射通信链路。 通常,本发明包括生成具有取决于是否要发生绿地(高数据速率)或混合模式传输并且取决于要生成的空间流的数量的布置的前导码。 用于高数据速率传输的一种格式包括短训练序列,长训练序列和信号场。 混合模式传输还包括传统前缀。

    Transceiver with space hopping phased array antenna and methods for use therewith
    82.
    发明授权
    Transceiver with space hopping phased array antenna and methods for use therewith 有权
    具有跳频相控阵天线的收发器及其使用方法

    公开(公告)号:US08170496B2

    公开(公告)日:2012-05-01

    申请号:US12428169

    申请日:2009-04-22

    IPC分类号: H01Q3/00 H04B1/38 H04B7/02

    CPC分类号: H04B7/0689

    摘要: A wireless transceiver includes at least one phased array antenna, that transmits an outbound RF signal containing outbound data to at least one remote transceiver and that receives an inbound RF signal containing inbound data from the at least one remote RF transceiver, wherein the at least one phased array antenna is configurable based on a control signal. An antenna configuration controller generates the control signal to configure the phased array antenna to hop among a plurality of radiation patterns based on a hopping sequence. At least one RF transceiver section generates the outbound RF signal based on the outbound data and that generates the inbound data based on the inbound RF signal.

    摘要翻译: 无线收发器包括至少一个相控阵天线,其将包含出站数据的出站RF信号发送到至少一个远程收发器,并且接收来自所述至少一个远程RF收发器的包含入站数据的入站RF信号,其中所述至少一个 基于控制信号可配置相控阵天线。 天线配置控制器产生控制信号,以基于跳频序列将相控阵天线配置在多个辐射图中跳跃。 至少一个RF收发器部分基于出站数据生成出站RF信号,并且基于入站RF信号生成入站数据。

    Modified preamble for programmable transmitter
    84.
    发明授权
    Modified preamble for programmable transmitter 有权
    可编程发射机的修改前导码

    公开(公告)号:US07974591B2

    公开(公告)日:2011-07-05

    申请号:US12498351

    申请日:2009-07-06

    IPC分类号: H04B1/04

    摘要: A programmable transmitter generates a frame preamble to train a receiver with respect to a communication link format that corresponds to a transmission mode wherein the transmission mode may comprise transmitting the communication link over one or more antennas. Generally, the invention includes generating a preamble with an arrangement that depends upon whether a Greenfield (high data rate) or mixed mode transmission is to occur and that depends upon a number of spatial streams that are to be generated. One format for high data rate transmission includes a short training sequence, a long training sequence and a signal field. The mixed mode transmission further includes a legacy prefix.

    摘要翻译: 可编程发射机产生帧前同步码,以针对对应于传输模式的通信链路格式来训练接收机,其中传输模式可以包括通过一个或多个天线发射通信链路。 通常,本发明包括生成具有取决于是否要发生绿地(高数据速率)或混合模式传输并且取决于要生成的空间流的数量的布置的前导码。 用于高数据速率传输的一种格式包括短训练序列,长训练序列和信号场。 混合模式传输还包括传统前缀。

    Mixed mode preamble for MIMO wireless communications
    85.
    发明授权
    Mixed mode preamble for MIMO wireless communications 有权
    用于MIMO无线通信的混合模式前导码

    公开(公告)号:US07826547B2

    公开(公告)日:2010-11-02

    申请号:US11079962

    申请日:2005-03-15

    IPC分类号: H04B7/02

    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。

    Asymmetrical MIMO wireless communications
    86.
    发明授权
    Asymmetrical MIMO wireless communications 有权
    不对称MIMO无线通信

    公开(公告)号:US07746886B2

    公开(公告)日:2010-06-29

    申请号:US10979368

    申请日:2004-11-01

    IPC分类号: H04W76/00

    CPC分类号: H04B7/0613 H04B7/0413

    摘要: A method for asymmetrical MIMO wireless communication begins by determining a number of transmission antennas for the asymmetrical MIMO wireless communication. The method continues by determining a number of reception antennas for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas exceeds the number of reception antennas, using spatial time block coding for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas does not exceed the number of reception antennas, using spatial multiplexing for the asymmetrical MIMO wireless communication.

    摘要翻译: 一种用于非对称MIMO无线通信的方法是通过确定用于非对称MIMO无线通信的多个发送天线来开始的。 该方法通过确定用于非对称MIMO无线通信的接收天线的数量来继续。 当发送天线的数量超过接收天线的数量时,该方法继续使用用于非对称MIMO无线通信的空间时间块编码。 当发送天线的数量不超过接收天线的数量时,该方法继续使用用于非对称MIMO无线通信的空间复用。

    MIMO wireless communication greenfield preamble formats
    87.
    发明授权
    MIMO wireless communication greenfield preamble formats 有权
    MIMO无线通信绿田前置码格式

    公开(公告)号:US07586881B2

    公开(公告)日:2009-09-08

    申请号:US10973212

    申请日:2004-10-26

    IPC分类号: H04Q7/00

    摘要: A method for multiple input multiple output wireless communication begins by determining protocols of wireless communication devices within the proximal region. The method continues by determining whether the protocols of the wireless communication devices within a proximal region are of a like protocol. The method continues by determining the a number of transmit antennas. The method continues, when the protocols of the wireless communication devices within a proximal region are of the like protocol, formatting preamble of a frame of a 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: 用于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。 该方法通过确定多个发射天线来继续。 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,使用符号的循环移位,音调的循环移位,稀疏音分配等的格式化无线通信的帧的前导码, 和基于发射天线数量的稀疏符号分配。

    Long training sequence for MIMO WLAN systems

    公开(公告)号:US07555053B2

    公开(公告)日:2009-06-30

    申请号:US10929313

    申请日:2004-08-30

    IPC分类号: H04B7/02

    CPC分类号: H04B7/0613

    摘要: A method for configuring a multiple input multiple output (MIMO) wireless communication begins by generating a plurality of preambles for a plurality of transmit antennas. Each of the plurality of preambles includes a carrier detection sequence at a legacy transmit rate, a first channel sounding at the legacy transmit rate, a signal field at the legacy transmit rate, and Z−1 channel soundings at a MIMO transmit rate, where L corresponds to a number of channel soundings. The method continues by simultaneously transmitting the plurality of preambles via the plurality of transmit antennas.

    Baseband / RFIC interface for high throughput MIMO communications

    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.

    Low complexity communication device employing in-place constructed LDPC (low density parity check) code
    90.
    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

    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