利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

52 条记录 (耗时 0.037 秒)

    Spectral transformation of acoustic signals
    1.
    发明授权
    Spectral transformation of acoustic signals 有权
    声信号的频谱变换

    公开(公告)号：US06253172B1

    公开(公告)日：2001-06-26

    申请号：US09153980

    申请日：1998-09-16

    申请人： Yinong Ding ,  Susan Yim ,  Alan V. McCree

    发明人： Yinong Ding ,  Susan Yim ,  Alan V. McCree

    IPC分类号： G10L1904

    CPC分类号： G10L21/003 ,  G10L19/06

    摘要： An improved method of providing a pitch shifted or frequency transformed signal includes frequency scaling the original signal (12) and generating a desired spectrum envelope of the frequency transformed signal, As(z) by LPC analysis of the original signal (11). Further the method includes producing an approximation of the spectrum envelope of the frequency scaled signal As(z, &bgr;) by performing LPC analysis on the original signal (11), obtaining LSFs (13), scaling (15) and transforming the scaled LSFs back to LPC (17). The spectrum envelope of the frequency scaled signal is whitened or flattened by the approximation of the spectrum of the frequency scaled signal and the desired spectrum envelope is added at filter (19) where the transfer characteristics of the filter is A s ⁡ ( z , β ) A s ⁡ ( z ) .

    摘要翻译： 提供音调偏移或频率变换信号的改进方法包括对原始信号（12）进行频率缩放，并通过原始信号（11）的LPC分析产生频率变换信号As（z）的期望频谱包络。 此外，该方法包括通过对原始信号（11）执行LPC分析来产生频率标度信号As（z，β）的频谱包络的​​近似，获得LSF（13），缩放（15）并将缩放的LSF变换回 到LPC（17）。 频率标度信号的频谱包络通过频率标度信号的频谱的近似而变白或变平，并且滤波器（19）加上期望的频谱包络，其中滤波器的传输特性为

    Method and system for performing a soft handoff in an OFDMA wireless network
    3.
    发明授权
    Method and system for performing a soft handoff in an OFDMA wireless network 有权
    用于在OFDMA无线网络中执行软切换的方法和系统

    公开(公告)号：US07885660B2

    公开(公告)日：2011-02-08

    申请号：US11215330

    申请日：2005-08-30

    申请人： Cornelius Van Rensburg ,  Yinong Ding ,  Jiann-An Tsai

    发明人： Cornelius Van Rensburg ,  Yinong Ding ,  Jiann-An Tsai

    IPC分类号： H04Q7/20

    CPC分类号： H04W36/18 ,  H04W36/30

    摘要： A method for performing a soft handoff for a mobile station from a source base station to a target base station in an Orthogonal Frequency-Division Multiple Access (OFDMA) wireless network that is capable of communicating with a plurality of mobile stations in a coverage area of the OFDMA wireless network is provided. The method includes determining whether a relative delay between receipt of a source pilot signal from a source base station and receipt of a target pilot signal from a target base station is less than a downlink coherence time. When the relative delay is less than the downlink coherence time, the soft handoff is performed.

    摘要翻译： 一种用于在正交频分多址（OFDMA）无线网络中从源基站到目标基站执行移动台的软越区切换的方法，其能够与覆盖区域中的多个移动站进行通信 提供了OFDMA无线网络。 该方法包括确定从源基站接收源导频信号和从目标基站接收目标导频信号之间的相对延迟是否小于下行链路相干时间。 当相对延迟小于下行链路相干时间时，执行软切换。

    Transmit methods with delay diversity and space-frequency diversity
    4.
    发明申请
    Transmit methods with delay diversity and space-frequency diversity 有权
    具有延迟分集和空间 - 频率分集的发射方法

    公开(公告)号：US20090028264A1

    公开(公告)日：2009-01-29

    申请号：US12155319

    申请日：2008-06-02

    申请人： Jianzhong Zhang ,  Cornelius Van Rensburg ,  Farooq Khan ,  Yinong Ding

    发明人： Jianzhong Zhang ,  Cornelius Van Rensburg ,  Farooq Khan ,  Yinong Ding

    IPC分类号： H04B7/02

    CPC分类号： H04L1/0606 ,  H04B7/0456 ,  H04B7/0486 ,  H04B7/0671 ,  H04L1/0668 ,  H04L1/08 ,  H04L1/1819 ,  H04L5/0023 ,  H04L25/03898 ,  H04L27/2626

    摘要： In this invention, several open-loop solutions that encompass the small delay CDD codeword cycling, codeword cycling between different re-transmissions of both small and large delay CDD are proposed. In addition, an open-loop codeword cycling method for SFBC+FSTD scheme, as well as its extension to SFBC+FSTD based HARQ, are proposed. In one method, a plurality of information bits are encoded, scrambled and modulated to generate a plurality of modulation symbols. The plurality of modulation symbols are mapped onto the subcarriers in at least one transmission layer of a transmission resource. The modulation symbols are then precoded by using a matrix for cyclic delay diversity and a set of codewords from a certain codebook to generate a plurality of precoded symbols. The codewords are cycled for every a certain number of subcarriers. Finally, the precoded symbols are transmitted via a plurality of transmission antennas.

    摘要翻译： 在本发明中，提出了包含小延迟CDD码字循环，小型和大型延迟CDD的不同重新传输之间的码字循环的几种开环解决方案。 此外，提出了用于SFBC + FSTD方案的开环码字循环方法，以及其对基于SFBC + FSTD的HARQ的扩展。 在一种方法中，多个信息比特被编码，加扰和调制以产生多个调制符号。 多个调制符号被映射到传输资源的至少一个传输层中的子载波上。 然后通过使用用于循环延迟分集的矩阵和来自某个码本的一组码字来生成多个预编码符号来对调制符号进行预编码。 每个一定数量的副载波循环码字。 最后，预编码符号经由多个发送天线发送。

    Filtering and guard band for non-synchronized transmission
    5.
    发明申请
    Filtering and guard band for non-synchronized transmission 失效
    滤波和保护频段用于非同步传输

    公开(公告)号：US20080240028A1

    公开(公告)日：2008-10-02

    申请号：US12007171

    申请日：2008-01-07

    申请人： Yinong Ding ,  Farooq Khan

    发明人： Yinong Ding ,  Farooq Khan

    IPC分类号： H04Q7/00

    CPC分类号： H04W74/002 ,  H04W74/0833

    摘要： A wireless terminal capable of communicating with a wireless communication system comprised of a plurality of wireless terminals and a plurality of base stations. The wireless terminal selects a sequence from a group of certain sequences for random access. At least one sub-carriers on an uplink channel including at least one data channel is allocated for at least one random access channel. Each data channel includes a continuous set of data sub-carriers. The wireless terminal then filters the at least one random access channel by applying a Raised Cosine filter, maps the selected sequence to the at least one random access channel to generate a random access channel signal, and transmits the random access channel signal to a base station.

    摘要翻译： 一种能够与由多个无线终端和多个基站组成的无线通信系统进行通信的无线终端。 无线终端从一组特定序列中选择一个序列进行随机访问。 至少一个随机接入信道被分配给包括至少一个数据信道的上行链路信道上的至少一个子载波。 每个数据信道包括连续的一组数据子载波。 然后，无线终端通过应用升余弦滤波器对所述至少一个随机接入信道进行滤波，将所选择的序列映射到所述至少一个随机接入信道以生成随机接入信道信号，并将所述随机接入信道信号发送到基站 。

    Orthogonal repetition and hybrid ARQ scheme
    6.
    发明申请
    Orthogonal repetition and hybrid ARQ scheme 审中-公开
    正交重复和混合ARQ方案

    公开(公告)号：US20080151831A1

    公开(公告)日：2008-06-26

    申请号：US11806660

    申请日：2007-06-01

    申请人： Farooq Khan ,  Cornelius Van Rensburg ,  Zhouyue Pi ,  Jiann-An Tsai ,  Yinong Ding

    发明人： Farooq Khan ,  Cornelius Van Rensburg ,  Zhouyue Pi ,  Jiann-An Tsai ,  Yinong Ding

    IPC分类号： H04Q7/30

    CPC分类号： H04L1/0656 ,  H04L1/0668 ,  H04L1/1812 ,  H04L1/1845 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0023

    摘要： A multi-user, multiple input, multiple output network and process for transmitting data in a communication system encompassing multiple users, contemplates the steps of: a first user transmitting a first transmission frame to a base transceiver station while a second user simultaneously transmits a third transmission frame to the base station; the first and second users simultaneously transmit a second transmission frame and a fourth transmission frames respectively to the base station, with the second transmission frame being an orthogonally spread version of the first transmission frame, and the fourth transmission frame being an orthogonally spread version of the second transmission frame.

    摘要翻译： 用于在包含多个用户的通信系统中传输数据的多用户，多输入，多输出网络和过程考虑了以下步骤：第一用户将第一传输帧发送到基站收发器，而第二用户同时发送第三个 传输帧到基站; 第一和第二用户同时将第二传输帧和第四传输帧发送到基站，其中第二传输帧是第一传输帧的正交扩展版本，第四传输帧是正交扩展版本的 第二传输帧。

    Channel sensing based on self-signal suppression
    9.
    发明授权
    Channel sensing based on self-signal suppression 失效
    基于自信号抑制的信道感测

    公开(公告)号：US08073395B2

    公开(公告)日：2011-12-06

    申请号：US11638301

    申请日：2006-12-12

    申请人： Baowei Ji ,  Yinong Ding

    发明人： Baowei Ji ,  Yinong Ding

    IPC分类号： H04B17/00

    CPC分类号： H04L1/24 ,  H04L1/1812

    摘要： A method and apparatus for channel sensing in a wireless communication device is provided. A self-signal intentionally transmitted to a first wireless device by another wireless communication device is detected in a signal received by the first wireless device. An original self-signal transmitted by the second wireless device is reconstructed from the detected self-signal. The reconstructed self-signal is then suppressed in the received signal and channel sensing is performed on the remaining signal. If the self-signal cannot be detected and verified in the received signal, the second wireless device may be requested to retransmit a modified self-signal and a predetermined number of attempts made to detect and verify the self-signal. Results of channel estimation performed on the received signal may be used in reconstructing the original self-signal. The channel estimation may include information from a plurality of frames in the received signal.

    摘要翻译： 提供了一种用于无线通信设备中的信道感测的方法和装置。 在由第一无线设备接收的信号中检测到由另一无线通信设备有意地发送到第一无线设备的自身信号。 从检测到的自身信号重建由第二无线设备发送的原始自身信号。 然后在接收信号中抑制重建的自身信号，并对剩余的信号执行信道感测。 如果在接收到的信号中无法检测和验证自身信号，则可以请求第二无线设备重新发送修改的自身信号以及进行检测和验证自身信号的预定次数的尝试。 对接收到的信号进行信道估计的结果可以用于重建原始的自身信号。 信道估计可以包括来自接收信号中的多个帧的信息。

    Calibration system architecture for calibrating multiple types of base stations in a wireless network
    10.
    发明授权
    Calibration system architecture for calibrating multiple types of base stations in a wireless network 有权
    用于校准无线网络中多种类型基站的校准系统架构

    公开(公告)号：US07672668B2

    公开(公告)日：2010-03-02

    申请号：US11221088

    申请日：2005-09-07

    申请人： Yinong Ding ,  Paul Nelson

    发明人： Yinong Ding ,  Paul Nelson

    IPC分类号： H04W24/00 ,  H04M1/00

    CPC分类号： H04W24/00 ,  H04B17/21

    摘要： A method of calibrating a base station that comprises an adaptive antenna array is provided. The method includes selecting one operational mode from a plurality of operational modes for the base station. An operational mode component set corresponding to the selected operational mode is selected from a plurality of operational mode component sets in the base station. The base station is calibrated using the selected operational mode component set.

    摘要翻译： 提供了一种校准包括自适应天线阵列的基站的方法。 该方法包括从基站的多个操作模式中选择一个操作模式。 从基站中的多个操作模式分量集中选择对应于所选择的操作模式的操作模式分量集合。 基站使用所选择的操作模式组件进行校准。