Avoiding deadlock between storage assignments by devices in a network
    1.
    发明授权
    Avoiding deadlock between storage assignments by devices in a network 有权
    避免网络中设备存储分配之间的死锁

    公开(公告)号:US07010657B2

    公开(公告)日:2006-03-07

    申请号:US10623750

    申请日:2003-07-21

    摘要: A method of avoiding deadlock during managing storage of items in a network (102) of heterogeneous storage devices (104,106,108). The method firstly detects (402) a storage event. Detection is effected by the local storage device and then the method obtains input information (404) having parameter values related to the item and the heterogeneous storage devices (104,106,108). The method then processes (406) the input information to determine a storage assignment, for storage of the item on one or more of the heterogeneous storage devices (104,106,108). The assignment is based on item-device suitability determined from a combination of at least one item selection rule and rules preventing deadlock.

    摘要翻译: 一种在异质存储设备(104,106,108)的网络(102)中管理项目的存储期间避免死锁的方法。 该方法首先检测(402)存储事件。 检测由本地存储设备实现,然后该方法获得具有与该项目和异构存储设备(104,106,108)相关的参数值的输入信息(404)。 该方法然后处理(406)输入信息以确定存储分配,用于将项目存储在一个或多个异构存储设备(104,106,108)上。 分配是基于从至少一个项目选择规则和防止死锁的规则的组合确定的项目设备适用性。

    Managing storage of items across a network of heterogeneous storage devices
    2.
    发明申请
    Managing storage of items across a network of heterogeneous storage devices 有权
    通过异构存储设备网络管理项目的存储

    公开(公告)号:US20050021915A1

    公开(公告)日:2005-01-27

    申请号:US10623750

    申请日:2003-07-21

    IPC分类号: G06F3/06 G06F12/00

    摘要: A method of managing storage of at least one item in a network (102) of heterogeneous storage devices (104,106,108), the heterogeneous storage devices are a local storage device and remote storage devices. The method firstly detects (402) a storage event. Detection is effected by the local storage device and then the method obtains input information (404) having parameter values related to the item and the heterogeneous storage devices (104,106,108). The method then processes (406) the input information to determine a storage assignment, for storage of the item on one or more of the heterogeneous storage devices (104,106,108). The assignment is based on item-device suitability determined from a combination of at least one item selection rule and at least one storage selection rule.

    摘要翻译: 一种管理异构存储设备(104,106,108)的网络(102)中的至少一个项目的存储的方法,所述异构存储设备是本地存储设备和远程存储设备。 该方法首先检测(402)存储事件。 检测由本地存储设备实现,然后该方法获得具有与该项目和异构存储设备(104,106,108)相关的参数值的输入信息(404)。 该方法然后处理(406)输入信息以确定存储分配,用于将项目存储在一个或多个异构存储设备(104,106,108)上。 该分配基于从至少一个项目选择规则和至少一个存储选择规则的组合确定的项目设备适合性。

    Method and system for interactive channel equalization
    3.
    发明申请
    Method and system for interactive channel equalization 有权
    交互式信道均衡的方法和系统

    公开(公告)号:US20060023806A1

    公开(公告)日:2006-02-02

    申请号:US10903353

    申请日:2004-07-30

    IPC分类号: H04B15/00 H04L25/03

    摘要: A method and system for interactive channel equalization uses channel status information included in data packets. The system includes a first station adapted to transmit a first data packet including a channel status information segment over a radio communication channel as a first signal. A second station in the system includes a static pre-equalizer and an adaptive equalizer. The second station is adapted to receive the first signal and adaptively equalize the first signal using the adaptive equalizer and the channel status information to create a post hoc status estimate of the channel. The second station is further adapted to transmit a second data packet over the channel as a second signal, where the second signal is pre-equalized by the pre-equalizer using the post hoc status estimate of the channel. The method and system thus enable parameters of the channel equalization to be adjusted in real-time in response to varying channel conditions.

    摘要翻译: 用于交互式信道均衡的方法和系统使用包括在数据分组中的信道状态信息。 该系统包括适于通过无线电通信信道发送包括信道状态信息段的第一数据分组作为第一信号的第一站。 系统中的第二站包括静态预均衡器和自适应均衡器。 第二站适于接收第一信号,并且使用自适应均衡器和信道状态信息自适应均衡第一信号,以创建信道的事后状态估计。 第二站还适于通过信道发送第二数据分组作为第二信号,其中第二信号由预均衡器使用信道的事后状态估计进行预均衡。 因此,该方法和系统使得可以响应于变化的信道条件实时地调整信道均衡的参数。

    Method and system for interactive channel equalization
    4.
    发明授权
    Method and system for interactive channel equalization 有权
    交互式信道均衡的方法和系统

    公开(公告)号:US07362803B2

    公开(公告)日:2008-04-22

    申请号:US10903353

    申请日:2004-07-30

    IPC分类号: H03H7/30 H03H7/40 H03K5/159

    摘要: A method and system for interactive channel equalization uses channel status information included in data packets. The system includes a first station adapted to transmit a first data packet including a channel status information segment over a radio communication channel as a first signal. A second station in the system includes a static pre-equalizer and an adaptive equalizer. The second station is adapted to receive the first signal and adaptively equalize the first signal using the adaptive equalizer and the channel status information to create a post hoc status estimate of the channel. The second station is further adapted to transmit a second data packet over the channel as a second signal, where the second signal is pre-equalized by the pre-equalizer using the post hoc status estimate of the channel. The method and system thus enable parameters of the channel equalization to be adjusted in real-time in response to varying channel conditions.

    摘要翻译: 用于交互式信道均衡的方法和系统使用包括在数据分组中的信道状态信息。 该系统包括适于通过无线电通信信道发送包括信道状态信息段的第一数据分组作为第一信号的第一站。 系统中的第二站包括静态预均衡器和自适应均衡器。 第二站适于接收第一信号,并且使用自适应均衡器和信道状态信息自适应均衡第一信号,以创建信道的事后状态估计。 第二站还适于通过信道发送第二数据分组作为第二信号,其中第二信号由预均衡器使用信道的事后状态估计进行预均衡。 因此,该方法和系统使得可以响应于变化的信道条件实时地调整信道均衡的参数。

    Demodulation of 16-QAM, DCM data symbols using two hybrid-QPSK constellations
    5.
    发明授权
    Demodulation of 16-QAM, DCM data symbols using two hybrid-QPSK constellations 有权
    使用两个混合QPSK星座解调16-QAM,DCM数据符号

    公开(公告)号:US08102930B2

    公开(公告)日:2012-01-24

    申请号:US11729345

    申请日:2007-03-28

    IPC分类号: H04L5/12

    摘要: In one embodiment, a demapper uses two hybrid-QPSK constellations to demap pairs of equalized data symbols recovered from 16-QAM, DCM OFDM symbols, wherein the equalized data symbols in a pair correspond to the same four-bit group. A first hybrid-QPSK constellation is generated by combining the real components of both 16-QAM mapping constellations onto one coordinate plane. The demapper generates a first set of two decision variables by combining the real components of each equalized data symbol in a pair to correspond to the first hybrid-QPSK coordinate plane. A log-likelihood ratio is then calculated for both decision variables in the set to determine likelihood estimates for the first and second bits of the four-bit group. This process is repeated for the imaginary components of each corresponding pair of equalized data symbols to generate likelihood estimates for the third and fourth bits of the four-bit group.

    摘要翻译: 在一个实施例中,解映射器使用两个混合QPSK星座来映射从16-QAM,DCM OFDM符号恢复的均衡数据符号对,其中一对中的均衡数据符号对应于相同的四位组。 通过将两个16-QAM映射星座的实部组合组合到一个坐标平面上来生成第一混合QPSK星座。 解映射器通过组合成对中的每个均衡数据符号的实部分量来对应于第一混合QPSK坐标平面来生成第一组两个判定变量。 然后对集合中的两个决策变量计算对数似然比,以确定四位组的第一和第二位的似然估计。 对于每个对应的均衡数据符号对的虚分量重复该过程,以生成四位组的第三和第四位的似然估计。

    ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING USING SUBSYMBOL PROCESSING
    6.
    发明申请
    ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING USING SUBSYMBOL PROCESSING 有权
    正交频分复用使用子公司加工

    公开(公告)号:US20090207926A1

    公开(公告)日:2009-08-20

    申请号:US12299348

    申请日:2006-11-29

    IPC分类号: H04L27/00 H04K1/10

    摘要: In one embodiment, a transmitter converts digital input data into combined-OFDM signals and a receiver recovers data from the transmitted combined-OFDM signals. For transmission, digital data is mapped into data symbols using a commonly known modulation technique, such as QAM or DQPSK. The data symbols are subsequently divided into two or more groups according to a specified grouping pattern. Each group of data symbols is then converted into a separate OFDM subsymbol using IFFT processing. The OFDM subsymbols are then combined according to a specified combining pattern to create a combined-OFDM symbol. Combined-OFDM symbols are then prepared for transmission by affixing cyclic prefixes, converting the symbols to analog format, and performing spectral shaping of the analog signal. Upsampling may be employed to increase the signal bandwidth. In alternative embodiments, OFDM subsymbols may be combined using interleaving to create an interleaved-OFDM symbol.

    摘要翻译: 在一个实施例中,发射机将数字输入数据转换为组合OFDM信号,并且接收机从所发送的组合OFDM信号中恢复数据。 为了传输,使用公知的调制技术(例如QAM或DQPSK)将数字数据映射成数据符号。 数据符号随后根据指定的分组模式分成两组或更多组。 然后使用IFFT处理将每组数据符号转换成单独的OFDM子符号。 然后根据指定的组合模式组合OFDM子符号以创建组合OFDM符号。 然后通过附加循环前缀,将符号转换为模拟格式,并执行模拟信号的频谱整形,准备组合OFDM符号进行传输。 可以采用上采样来增加信号带宽。 在替代实施例中,可以使用交织来组合OFDM子符号以创建交错OFDM符号。

    Orthogonal frequency division multiplexing using subsymbol processing
    7.
    发明授权
    Orthogonal frequency division multiplexing using subsymbol processing 有权
    使用子符号处理的正交频分复用

    公开(公告)号:US08406323B2

    公开(公告)日:2013-03-26

    申请号:US12299348

    申请日:2006-11-29

    IPC分类号: H04K1/10 H04L27/28

    摘要: In one embodiment, a transmitter converts digital input data into combined-OFDM signals and a receiver recovers data from the transmitted combined-OFDM signals. For transmission, digital data is mapped into data symbols using a commonly known modulation technique, such as QAM or DQPSK. The data symbols are subsequently divided into two or more groups according to a specified grouping pattern. Each group of data symbols is then converted into a separate OFDM subsymbol using IFFT processing. The OFDM subsymbols are then combined according to a specified combining pattern to create a combined-OFDM symbol. Combined-OFDM symbols are then prepared for transmission by affixing cyclic prefixes, converting the symbols to analog format, and performing spectral shaping of the analog signal. Upsampling may be employed to increase the signal bandwidth. In alternative embodiments, OFDM subsymbols may be combined using interleaving to create an interleaved-OFDM symbol.

    摘要翻译: 在一个实施例中,发射机将数字输入数据转换为组合OFDM信号,并且接收机从所发送的组合OFDM信号中恢复数据。 为了传输,使用公知的调制技术(例如QAM或DQPSK)将数字数据映射成数据符号。 数据符号随后根据指定的分组模式分成两组或更多组。 然后使用IFFT处理将每组数据符号转换成单独的OFDM子符号。 然后根据指定的组合模式组合OFDM子符号以创建组合OFDM符号。 然后通过附加循环前缀,将符号转换为模拟格式,并执行模拟信号的频谱整形,准备组合OFDM符号进行传输。 可以采用上采样来增加信号带宽。 在替代实施例中,可以使用交织来组合OFDM子符号以创建交错OFDM符号。

    DEMODULATION OF 16-QAM, DCM DATA SYMBOLS USING TWO HYBRID-QPSK CONSTELLATIONS
    8.
    发明申请
    DEMODULATION OF 16-QAM, DCM DATA SYMBOLS USING TWO HYBRID-QPSK CONSTELLATIONS 审中-公开
    使用两个混合QPSK协议的16-QAM,DCM数据符号的解调

    公开(公告)号:US20120051415A1

    公开(公告)日:2012-03-01

    申请号:US13290627

    申请日:2011-11-07

    IPC分类号: H04L27/38 H04L27/01

    摘要: In one embodiment, a demapper uses two hybrid-QPSK constellations to demap pairs of equalized data symbols recovered from 16-QAM, DCM OFDM symbols, wherein the equalized data symbols in a pair correspond to the same four-bit group. A first hybrid-QPSK constellation is generated by combining the real components of both 16-QAM mapping constellations onto one coordinate plane. The demapper generates a first set of two decision variables by combining the real components of each equalized data symbol in a pair to correspond to the first hybrid-QPSK coordinate plane. A log-likelihood ratio is then calculated for both decision variables in the set to determine likelihood estimates for the first and second bits of the four-bit group. This process is repeated for the imaginary components of each corresponding pair of equalized data symbols to generate likelihood estimates for the third and fourth bits of the four-bit group.

    摘要翻译: 在一个实施例中,解映射器使用两个混合QPSK星座来映射从16-QAM,DCM OFDM符号恢复的均衡数据符号对,其中一对中的均衡数据符号对应于相同的四位组。 通过将两个16-QAM映射星座的实部组合组合到一个坐标平面上来生成第一混合QPSK星座。 解映射器通过组合成对中的每个均衡数据符号的实部分量来对应于第一混合QPSK坐标平面来生成第一组两个判定变量。 然后对集合中的两个决策变量计算对数似然比,以确定四位组的第一和第二位的似然估计。 对于每个对应的均衡数据符号对的虚分量重复该过程,以生成四位组的第三和第四位的似然估计。

    Demodulation of 16-QAM, DCM data symbols using two hybrid-QPSK constellations
    9.
    发明申请
    Demodulation of 16-QAM, DCM data symbols using two hybrid-QPSK constellations 有权
    使用两个混合QPSK星座解调16-QAM,DCM数据符号

    公开(公告)号:US20080240299A1

    公开(公告)日:2008-10-02

    申请号:US11729345

    申请日:2007-03-28

    IPC分类号: H04L27/22

    摘要: In one embodiment, a demapper uses two hybrid-QPSK constellations to demap pairs of equalized data symbols recovered from 16-QAM, DCM OFDM symbols, wherein the equalized data symbols in a pair correspond to the same four-bit group. A first hybrid-QPSK constellation is generated by combining the real components of both 16-QAM mapping constellations onto one coordinate plane. The demapper generates a first set of two decision variables by combining the real components of each equalized data symbol in a pair to correspond to the first hybrid-QPSK coordinate plane. A log-likelihood ratio is then calculated for both decision variables in the set to determine likelihood estimates for the first and second bits of the four-bit group. This process is repeated for the imaginary components of each corresponding pair of equalized data symbols to generate likelihood estimates for the third and fourth bits of the four-bit group.

    摘要翻译: 在一个实施例中,解映射器使用两个混合QPSK星座来映射从16-QAM,DCM OFDM符号恢复的均衡数据符号对,其中一对中的均衡数据符号对应于相同的四位组。 通过将两个16-QAM映射星座的实部组合组合到一个坐标平面上来生成第一混合QPSK星座。 解映射器通过组合成对中的每个均衡数据符号的实部分量来对应于第一混合QPSK坐标平面来生成第一组两个判定变量。 然后针对集合中的两个决策变量计算对数似然比,以确定四位组的第一和第二位的似然估计。 对于每个对应的均衡数据符号对的虚分量重复该过程,以生成四位组的第三和第四位的似然估计。