TRANSMISSION SIGNALS, METHOD AND APPARATUS
    1.
    发明申请
    TRANSMISSION SIGNALS, METHOD AND APPARATUS 审中-公开
    传输信号,方法和设备

    公开(公告)号:US20070217546A1

    公开(公告)日:2007-09-20

    申请号:US11751611

    申请日:2007-05-21

    IPC分类号: H04L27/00

    摘要: This invention relates to apparatus, methods, processor control code and signals for channel estimation in OFDM (Orthogonal Frequency Division Multiplexed) communication systems with a plurality of transmitter antennas, such as MIMO (Multiple-input Multiple-output) OFDM systems. An OFDM signal is transmitted from an OFDM transmitter using a plurality of transmit antennas. The OFDM signal is adapted for channel estimation for channels associated with said transmit antennas by the inclusion of orthogonal training sequence data in the signal from each said antenna. The said training sequence data is derived from substantially orthogonal training sequences of length K for each said transmit antenna, said orthogonal training sequences being constructed such that a minimum required sequence length K needed to determine a channel estimate for at least one channel associated with each said transmit antenna is linearly dependent upon the number of said transmit antennas.

    摘要翻译: 本发明涉及具有诸如MIMO(多输入多输出)OFDM系统的多个发射机天线的OFDM(正交频分复用)通信系统中用于信道估计的装置,方法,处理器控制代码和信号。 使用多个发送天线从OFDM发送器发送OFDM信号。 通过在每个所述天线的信号中包括正交训练序列数据,OFDM信号适用于与所述发射天线相关联的信道的信道估计。 所述训练序列数据从每个所述发射天线的长度为K的基本上正交的训练序列导出,所述正交训练序列被构造为使得确定与每个所述发射天线相关联的至少一个信道的信道估计所需的最小所需序列长度K 发射天线线性地取决于所述发射天线的数量。

    Battery quick-change system for an electric passenger car chassis having a cartesian coordinate robot
    2.
    发明授权
    Battery quick-change system for an electric passenger car chassis having a cartesian coordinate robot 有权
    具有笛卡尔坐标机器人的电动客车底盘的电池快速更换系统

    公开(公告)号:US08868235B2

    公开(公告)日:2014-10-21

    申请号:US13877041

    申请日:2011-11-17

    IPC分类号: B60S5/06 B25J13/08

    摘要: One type of battery quick-change system of electric passenger car chassis based on the Cartesian coordinate robot, including electric changing platform, and this platform, quick-change robot and charging rack along the same straight line; the quick-change robot comprises the battery tray and the Cartesian coordinate robot of four degrees of freedom, the Cartesian coordinate robot is associated with the X-axis driving motor, the Y-axis driving motor, the Z-axis up-down motor, the battery tray is connected with the R-axis driving motor; each of driving motors is connected with the corresponding encoder, and each of encoders is connected to the corresponding drive; there are equipped with a distance measuring sensor on the battery tray, and the corresponding limit switches on the both ends of each two-track rack; the drive, each limit switch and the distance measuring sensor of each driving motor are connected with the control system.

    摘要翻译: 一种基于笛卡尔坐标机器人的电动客车底盘的电动快速切换系统,包括电动换台,该平台,快换机器人和充电架沿同一条直线; 快速切换机器人包括电池托盘和四自由度的笛卡尔坐标机器人,笛卡尔坐标机器人与X轴驱动电机,Y轴驱动电机,Z轴上下电机相关联, 电池托盘与R轴驱动电机连接; 每个驱动电机与相应的编码器连接,每个编码器连接到相应的驱动器; 在电池托架上配有距离测量传感器,每个双轨架两端配有相应的限位开关; 驱动器,每个限位开关和每个驱动电机的距离测量传感器都与控制系统连接。

    Method for measuring rotational speed of molecule of fullerenes
    4.
    发明授权
    Method for measuring rotational speed of molecule of fullerenes 失效
    测定富勒烯分子旋转速度的方法

    公开(公告)号:US07138799B2

    公开(公告)日:2006-11-21

    申请号:US10520042

    申请日:2003-07-11

    IPC分类号: G01V3/00

    CPC分类号: B82Y15/00 G01N22/00

    摘要: Disclosed is a method for measuring the molecular rotation speed (the number of rotations or the rotation frequency) of a fullerene or a fullerene derivative in a relatively simple and inexpensive manner, for the evaluation of the fullerenes. The method comprises having a thin film of the fullerene or the fullerene derivative absorb an electromagnetic wave varied in frequency, and measuring the change in electromagnetic wave intensity against temperature, thereby determining the molecular rotation speed of the fullerene or the fullerene derivative from the frequency of the electromagnetic wave at the temperature where there is an abrupt change in the electromagnetic wave intensity from the absorption region to the non-absorption region. In a preferred embodiment, electromagnetic waves produced from the surface of a surface acoustic wave device are used.

    摘要翻译: 公开了用于评估富勒烯的方法,以相对简单且廉价的方式测量富勒烯或富勒烯衍生物的分子旋转速度(旋转数或旋转频率)。 该方法包括使富勒烯或富勒烯衍生物的薄膜吸收频率变化的电磁波,并测量电磁波强度相对于温度的变化,从而从富勒烯或富勒烯衍生物的频率确定分子旋转速度 在从吸收区域到非吸收区域的电磁波强度突然变化的温度下的电磁波。 在优选实施例中,使用从表面声波装置的表面产生的电磁波。

    Spatial division multiplexing for MIMO devices
    5.
    发明申请
    Spatial division multiplexing for MIMO devices 审中-公开
    MIMO设备的空分复用

    公开(公告)号:US20050265475A1

    公开(公告)日:2005-12-01

    申请号:US11109663

    申请日:2005-04-20

    申请人: Yong Sun Hwa Tan

    发明人: Yong Sun Hwa Tan

    摘要: A communications system, comprising a transmitter and a receiver, are operable to communicate information using a spatial multiplexing method. The transmitter is operable to separate data to be transmitted into two categories, Alamouti encoding the symbols of the first category and transmitting them on an even number of antennae, and not encoding the second category of symbols, but merely using a modulation scheme such as QAM, and transmitting them on one or more further antennae. A corresponding receiver is operable to successively detect signal components received on corresponding spatially displaced antennae, and then to determine an estimated channel response from the signal components. A weighting function is then derived to extract a stream of data from the received signal, which, on the basis that the Alamouti STBC encoded signal will have the highest signal to noise ratio, will normally be the latter, while other data not encoded according to Alamouti is detected thereafter.

    摘要翻译: 包括发射机和接收机的通信系统可操作以使用空间复用方法来传送信息。 发射机可操作以将要发送的数据分离成两类,Alamouti编码第一类别的符号并在偶数天线上发送它们,并且不对第二类别的符号进行编码,而仅使用诸如QAM的调制方案 ,并在一个或多个另外的天线上发送它们。 相应的接收机可操作地连续地检测在对应的空间位移天线上接收的信号分量,然后确定来自信号分量的估计信道响应。 然后导出加权函数以从接收信号中提取数据流,其基于Alamouti STBC编码信号将具有最高的信噪比,通常将是后者,而其他数据不是根据 此后检测到Alamouti。

    LINEAR MULTIUSER PRECODING WITH MULTIPLE-RECEIVE ANTENNA RECEIVERS
    7.
    发明申请
    LINEAR MULTIUSER PRECODING WITH MULTIPLE-RECEIVE ANTENNA RECEIVERS 有权
    线性多路复用器与多个接收天线接收机的预测

    公开(公告)号:US20110243045A1

    公开(公告)日:2011-10-06

    申请号:US13038878

    申请日:2011-03-02

    IPC分类号: H04W92/00 H04L27/28

    摘要: According to one embodiment there is provided a method performed in a transmitter side of a multiuser minimum square error linear precoding MIMO system that comprises a transmitter with a plurality of transmit antennae and a plurality of receivers. Each receiver of the plurality of receivers comprises a plurality of receive antennae. The method is a method of scheduling receivers from among the plurality of receivers and comprises obtaining, for some or all of the receivers, receiver channel information that quantifies the properties of transmit channels between receiver antennae of the receiver and transmit antennae of the transmitter and establishing an order for determining the receiver combining vectors of the some or all of the receivers. The order is established by selecting as a next receiver in the order a so far unselected receiver from the some or all of the receivers that minimally increases the mean square data transmission error. The establishing of the order is based on the channel information of any receivers previously selected in the order and of unselected receivers.

    摘要翻译: 根据一个实施例,提供了一种在多用户最小平方误差线性预编码MIMO系统的发射机侧执行的方法,其包括具有多个发射天线和多个接收机的发射机。 多个接收机的每个接收机包括多个接收天线。 该方法是从多个接收机之间调度接收机的方法,包括为接收机的一些或全部获得接收机信道信息,其量化接收机的接收机天线与发射机的发射天线之间的发射信道的属性,并建立 用于确定接收机的一些或所有接收机的组合向量的顺序。 通过以最小程度地增加均方数据传输误差的一些或所有接收器的顺序选择到目前为止的未选择的接收器的顺序来选择下一个接收器。 订单的建立是基于先前在订单中选择的任何接收器和未选择的接收器的信道信息。

    Score-based intrusion prevention system
    8.
    发明申请
    Score-based intrusion prevention system 审中-公开
    基于分数的入侵防御系统

    公开(公告)号:US20090077663A1

    公开(公告)日:2009-03-19

    申请号:US11898838

    申请日:2007-09-17

    申请人: Yong Sun Faud Khan

    发明人: Yong Sun Faud Khan

    IPC分类号: G06F21/06

    CPC分类号: H04L63/1416

    摘要: A score-based method of preventing intrusion, and related apparatus and systems, including one or more of the following: receiving traffic including new packets; decoding a protocol for same; determining that no session exists to which the packets are associated; creating a session entry for a session corresponding to the packets; setting a total score for the session to zero; performing an anomaly analysis on the packets identifying an anomaly; adding an anomaly score for the anomaly to the total score for the session; determining that the total score for the session does not exceed a threshold; determining that the anomaly analysis is finished; determining that the signature of the received new packets matches a threat signatures; adding a score assigned to the threat signature to the total score for the session; determining that the total score for the session exceeds the threshold; and triggering a threat response action.

    摘要翻译: 一种防止入侵的基于分数的方法以及相关设备和系统,包括以下一个或多个:接收包括新分组的流量; 解码协议相同; 确定与所述分组相关联的会话不存在; 创建对应于分组的会话的会话条目; 将会议总分设为零; 对识别异常的分组执行异常分析; 将异常的异常得分加到会议总分上; 确定会话的总分数不超过阈值; 确定异常分析结束; 确定所接收的新分组的签名与威胁签名匹配; 将分配给威胁签名的分数添加到会话的总分数; 确定会话的总分超过阈值; 并触发威胁响应行动。

    Source-Channel Approach to Channel Coding with Side Information
    9.
    发明申请
    Source-Channel Approach to Channel Coding with Side Information 有权
    信道编码与信息源的信道方法

    公开(公告)号:US20070217522A1

    公开(公告)日:2007-09-20

    申请号:US11684427

    申请日:2007-03-09

    IPC分类号: H04B14/04 H04L23/02

    摘要: Code designs for channel coding with side information (CCSI) based on combined source-channel coding are disclosed. These code designs combine trellis-coded quantization (TCQ) with irregular repeat accumulate (IRA) codes. The EXIT chart technique is used for IRA channel code design (and especially for capacity-approaching IRA channel code design). We emphasize the role of strong source coding and endeavor to achieve as much granular gain as possible by using TCQ. These code designs synergistically combine TCQ with IRA codes. By bringing together TCQ and EXIT chart-based IRA code designs, we are able to approach the theoretical limit of dirty-paper coding.

    摘要翻译: 公开了基于组合源信道编码的具有侧信息(CCSI)的信道编码的码设计。 这些代码设计将网格编码量化(TCQ)与不规则重复累加(IRA)代码相结合。 EXIT图表技术用于IRA通道代码设计(特别是对于容量接近的IRA通道代码设计)。 我们强调强源代码的作用,努力通过使用TCQ实现尽可能多的粒度增益。 这些代码设计将TCQ与IRA代码相结合。 通过汇总TCQ和EXIT图表的IRA代码设计,我们可以接近脏纸编码的理论限制。

    Method and apparatus for fingerprinting systems and operating systems in a network

    公开(公告)号:US09451036B2

    公开(公告)日:2016-09-20

    申请号:US12008856

    申请日:2008-01-15

    摘要: A system and method for identifying the number of computer hosts and types of operating systems behind a network address translation is provided. The method includes processing an internet protocol packet associated with the host computer system. The process may involve capturing the internet protocol packet and extracting key fields from the internet protocol packet to produce a fingerprint. The method continues with analyzing the fields in order to determine if a network address translator is connected between the host computer and a public network (e.g. the internet). If there is a network address translator connected, fields may be analyzed in order to determine the number of computers using the network address translator. The fields may also be analyzing in order to determine with a level of probability that the fingerprint identifies the correct operating system running the host computers. Generally, the internet protocol packet that is analyzing will be captured from an aggregation point in the carrier network.