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    LDPC coding systems for 60 GHz millimeter wave based physical layer extension
    21.
    发明申请
    LDPC coding systems for 60 GHz millimeter wave based physical layer extension 有权

    公开(公告)号：US20130223561A1

    公开(公告)日：2013-08-29

    申请号：US13780947

    申请日：2013-02-28

    Applicant: BROADCOM CORPORATION

    Inventor： Jason A. Trachewsky ,  Ba-Zhong Shen ,  Andrew J. Blanksby ,  Joonsuk Kim

    IPC: H04L1/00

    CPC classification number: H04L1/0041 ,  H03M13/116 ,  H03M13/1185 ,  H03M13/6544 ,  H03M13/655 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0071

    Abstract: LDPC coding systems for 60 GHz millimeter wave based physical layer extension. LDPC (Low Density Parity Check) encoding in cooperation with sub-carrier interleaving, in the context of orthogonal frequency division multiplexing (OFDM), and appropriate symbol mapping is performed in accordance with transmit processing as may be performed within a communication device. In a receiving communication device, receive processing may be performed on a received signal based on the type of LDPC, sub-carrier interleaving, and symbol mapping thereof. The LDPC code employed in accordance with such LDPC encoding may have a partial-tree like structure. In addition, appropriate manipulation of the bits assigned to respective sub-carriers may be performed to ensure that the bits emplaced in the MSB (Most Significant Bit) location of various symbols has some desired diversity (e.g., from different codewords, from appropriately different locations within a given codeword, etc.).

    MIMO WIRELESS COMMUNICATION GREENFIELD PREAMBLE FORMATS
    22.
    发明申请
    MIMO WIRELESS COMMUNICATION GREENFIELD PREAMBLE FORMATS 审中-公开
    MIMO无线通信绿色前缀格式

    公开(公告)号：US20130089054A1

    公开(公告)日：2013-04-11

    申请号：US13690722

    申请日：2012-11-30

    Applicant: Broadcom Corporation

    Inventor： Christopher J. Hansen ,  Jason A. Trachewsky ,  Rajendra Tushar Moorti ,  Matthew James Fischer ,  Christopher Young

    IPC: H04W72/04

    CPC classification number: H04W72/044 ,  H04L1/0001 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/06 ,  H04L1/1867 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2613 ,  H04W84/12

    Abstract: 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.

    Abstract translation: 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。

    Low power protocol for wireless terminal peer-to-peer communications
    24.
    发明授权
    Low power protocol for wireless terminal peer-to-peer communications 有权
    用于无线终端对等通信的低功率协议

    公开(公告)号：US09025582B2

    公开(公告)日：2015-05-05

    申请号：US13931136

    申请日：2013-06-28

    Applicant: Broadcom Corporation

    Inventor： Stephen Palm ,  Edward H. Frank ,  Bruce E. Edwards ,  Jason A. Trachewsky

    IPC: H04W4/00 ,  H04W52/02 ,  H04W74/02 ,  H04W74/06 ,  H04W74/08 ,  H04W84/12

    CPC classification number: H04W52/0203 ,  H04W52/0216 ,  H04W74/02 ,  H04W74/06 ,  H04W74/08 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/22

    Abstract: A Wireless Local Area Network (WLAN) system based upon peer-to-peer communications. A wireless terminal for peer-to-peer communications acts either as a WLAN master or as a WLAN slave. When the wireless terminal acts a master, the wireless terminal undertakes mastering duties that include transmitting a beacon interval in the frame cycle. When the wireless terminal is not tethered to a power source, mastering duties alternate according to a round-robin WLAN mastering cycle, wherein the wireless terminal acts the WLAN master during at least one frame cycle and acts the WLAN slave during other frame cycles to conserve an untethered power source of the wireless terminal.

    Abstract translation: 基于点对点通信的无线局域网（WLAN）系统。 用于对等通信的无线终端作为WLAN主机或WLAN从设备。 当无线终端作为主机时，无线终端承担包括在帧周期中发送信标间隔的控制任务。 当无线终端不被连接到电源时，根据循环WLAN主控周期交替备用工作，其中无线终端在至少一个帧周期内对WLAN主机起作用，并且在其他帧周期期间对WLAN从属设备进行动作以节省 无线终端的无电源电源。

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