System and method for reducing the effects of clipping in a DMT transceiver
    1.
    发明授权
    System and method for reducing the effects of clipping in a DMT transceiver 有权
    用于降低DMT收发器中限幅效果的系统和方法

    公开(公告)号:US06584160B1

    公开(公告)日:2003-06-24

    申请号:US09373841

    申请日:1999-08-13

    IPC分类号: H04L2549

    CPC分类号: H04L27/2614 H04L27/2624

    摘要: The present invention is directed to a system and method for reducing the need to perform signal clipping in a DMT transmitter. In accordance with one aspect of the invention, a method performs an inverse Fourier Transform on the input to produce a time-domain, digital value to be transmitted to a remote receiver. The method then evaluates the magnitude of the digital value to determine whether the magnitude exceeds a threshold value. Then, the method alters the input and re-performs an inverse Fourier Transform on the altered input, only if the step of evaluating the magnitude determines that the magnitude of the digital value exceeds the threshold value.

    摘要翻译: 本发明涉及一种用于减少在DMT发射机中执行信号限幅的需要的系统和方法。 根据本发明的一个方面,一种方法在输入端执行逆傅里叶变换,以产生要传输到远程接收机的时域数字值。 该方法然后评估数字值的大小以确定幅度是否超过阈值。 然后,只有当评估幅度的步骤确定数字值的大小超过阈值时,该方法改变输入并对改变的输入重新执行逆傅里叶变换。

    System and method for performing time domain equalization
    2.
    发明授权
    System and method for performing time domain equalization 有权
    用于执行时域均衡的系统和方法

    公开(公告)号:US06353644B1

    公开(公告)日:2002-03-05

    申请号:US09303730

    申请日:1999-05-03

    IPC分类号: H04B110

    摘要: Disclosed is a system and method for signal conditioning and equalization in the time domain, preferably in a discrete multi-tone (DMT) modem. The system preferably includes a processor operating according to operating logic stored on a memory although a dedicated logical circuit may be employed. The operating logic includes logic executing the function of a low pass filter having a predetermined cutoff frequency configured to process a digitized data signal having a first sample rate f0, producing a filtered data signal at a second sample rate f1. The operating logic further includes logic which executes the function of a time domain equalizer, the time domain equalizer being configured to process the filtered signal to shorten the impulse response of the channel while at the same time, the time domain equalizer down-samples the filtered signal from the second sample rate f1, to a third sample rate f2 for further processing in the frequency domain.

    摘要翻译: 公开了一种在时域中信号调节和均衡的系统和方法,优选地在离散多音调(DMT)调制解调器中。 该系统优选地包括根据存储在存储器上的操作逻辑操作的处理器,尽管可以采用专用逻辑电路。 操作逻辑包括执行具有预定截止频率的低通滤波器的功能的逻辑,所述低通滤波器被配置为处理具有第一采样率f0的数字化数据信号,以第二采样率f1产生滤波数据信号。 操作逻辑还包括执行时域均衡器的功能的逻辑,时域均衡器被配置为处理滤波信号以缩短信道的脉冲响应,同时时域均衡器对滤波后的 信号从第二采样率f1到第三采样率f2,用于在频域中进一步处理。

    System and method for data mining and security policy management
    5.
    发明授权
    System and method for data mining and security policy management 有权
    数据挖掘和安全策略管理的系统和方法

    公开(公告)号:US08601537B2

    公开(公告)日:2013-12-03

    申请号:US13424249

    申请日:2012-03-19

    申请人: Weimin Liu

    发明人: Weimin Liu

    IPC分类号: G06F17/00

    CPC分类号: H04L63/20

    摘要: A system and method to generate and maintain controlled growth DAG are described. The controlled growth DAG conveys information about objects captured by a capture system.

    摘要翻译: 描述了生成和维持受控生长DAG的系统和方法。 受控增长的DAG传达关于捕获系统捕获的物体的信息。

    Method for transmitting/responding paging information for dual-mode access terminal and device and method for network switching according to network indication
    7.
    发明授权
    Method for transmitting/responding paging information for dual-mode access terminal and device and method for network switching according to network indication 失效
    用于双模接入终端的发送/响应寻呼信息的方法和根据网络指示进行网络交换的设备和方法

    公开(公告)号:US08009691B2

    公开(公告)日:2011-08-30

    申请号:US12067857

    申请日:2006-09-22

    申请人: Weimin Liu

    发明人: Weimin Liu

    IPC分类号: H04L12/66

    摘要: Provided is a method for transmitting 1x paging information through an HRPD network and responding to the 1x paging information by a dual-mode MS/AT. After the MS/AT turns to an HRPD network and informs an MSC of related information, if some 1x paging information arrives, the MSC sends a message indicating 1x service arrival to the PCF. An HRPD AN bears the 1x service arrival message that carries calling information sent from the PCF in the 1x service packet to send to the MS/AT. If the user, receiving the 1x service arrival message, chooses to accept a 1x call, the MS/AT terminates the service in the HRPD network and turns to the 1x network to send a “paging response” message to a 1x BS.

    摘要翻译: 提供了一种通过HRPD网络发送1x寻呼信息并通过双模式MS / AT响应1x寻呼信息的方法。 在MS / AT转为HRPD网络并向MSC通知相关信息之后,如果有一些1x寻呼信息到达,则MSC向PCF发送一条指示1x业务到达的消息。 HRPD AN承载1x服务到达消息,其携带在1x服务分组中从PCF发送的呼叫信息以发送到MS / AT。 如果用户接收1x业务到达消息,则选择接受1x呼叫,则MS / AT终止HRPD网络中的业务,并转到1x网络向1x BS发送“寻呼响应”消息。

    Method and device for authenticating MS that has an R-UIM by using CAVE algorithm
    8.
    发明授权
    Method and device for authenticating MS that has an R-UIM by using CAVE algorithm 有权
    使用CAVE算法对具有R-UIM的MS进行认证的方法和装置

    公开(公告)号:US07649995B2

    公开(公告)日:2010-01-19

    申请号:US11068186

    申请日:2005-02-28

    IPC分类号: H04L12/22 H04L12/56

    摘要: A method and device for authenticating a MS has an R-UIM by using CAVE Algorithm are provided. The hardware structure of the device includes a cdma2000/HRPD dual-mode chip, a User Identity Module supporting the CAVE algorithm. The dual-mode terminal forms the NAI value with the domain name stored in a memory of the dual-mode terminal in advance by the IMSI. The dual-mode terminal extracts a RAND that is necessary for the calculation of an authentication parameter1 from the Random values included in a Chap Challenge message, instructs the R-UIM card to use the CAVE algorithm to calculate the authentication parameter1 with the RAND and an existing SSD_A in the R-UIM card, and bears the authentication parameter1 by the Result domain of a Chap Response message. With the present invention, the wastes caused by the replacement of R-UIM cards can be avoided.

    摘要翻译: 用于认证MS的方法和设备具有使用CAVE算法的R-UIM。 该设备的硬件结构包括cdma2000 / HRPD双模芯片,支持CAVE算法的用户识别模块。 双模终端由IMSI预先形成存储在双模终端的存储器中的域名的NAI值。 双模终端从Chap Challenge消息中包含的Random值提取认证参数1计算所需的RAND,指示R-UIM卡使用CAVE算法计算出RAND的认证参数1, 在R-UIM卡中存在SSD_A,并通过Chap响应消息的Result域承载认证参数1。 利用本发明,可以避免由更换R-UIM卡引起的废物。

    SYSTEM AND METHOD FOR DATA MINING AND SECURITY POLICY MANAGEMENT
    9.
    发明申请
    SYSTEM AND METHOD FOR DATA MINING AND SECURITY POLICY MANAGEMENT 有权
    数据挖掘与安全政策管理系统与方法

    公开(公告)号:US20100011410A1

    公开(公告)日:2010-01-14

    申请号:US12171232

    申请日:2008-07-10

    申请人: Weimin Liu

    发明人: Weimin Liu

    IPC分类号: G06F21/00

    CPC分类号: H04L63/20

    摘要: A system and method to generate and maintain controlled growth DAG are described. The controlled growth DAG conveys information about objects captured by a capture system.

    摘要翻译: 描述了生成和维持受控生长DAG的系统和方法。 受控增长的DAG传达关于捕获系统捕获的物体的信息。

    Method and apparatus for access authentication in wireless mobile communication system
    10.
    发明授权
    Method and apparatus for access authentication in wireless mobile communication system 有权
    无线移动通信系统中接入认证的方法和装置

    公开(公告)号:US07607013B2

    公开(公告)日:2009-10-20

    申请号:US11068188

    申请日:2005-02-28

    IPC分类号: H04L9/00

    摘要: A method for Access Authentication in the High Rate Packet Data Network is proposed in the present invention comprising steps of the AN-AAA receiving the Radius Access Request message sent from the HRPD AN; the AN-AAA judging whether a terminal is a roaming one according to the Network Access ID and transmits the roaming terminal's authentication information to the terminal's home nerwork. If said terminal is a local one, the AN-AAA judges the type of the terminal according to the NAI value. If said terminal is a single-mode one, the AN-AAA works out the Result2 with the MD5 algorithm. if said terminal is in dual-mode, the AN-AAA calculates the Result2 with the CAVE algorithm to compare the Result1 with the Result2.

    摘要翻译: 本发明提出了一种高速率分组数据网络中的接入认证方法,包括AN-AAA接收HRPD AN发送的半径接入请求消息的步骤; AN-AAA根据网络接入ID判断终端是否为漫游终端,并将漫游终端的认证信息发送到终端的家庭故障。 如果所述终端是本地终端,则AN-AAA根据NAI值来判断终端的类型。 如果所述终端是单模,则AN-AAA使用MD5算法来计算Result2。 如果所述终端处于双模式,则AN-AAA使用CAVE算法计算Result2,以将Result1与Result2进行比较。