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79 条记录 (耗时 0.024 秒)

    Method and apparatus for resolving spectral inversion ambiguities in coded data
    61.
    发明授权
    Method and apparatus for resolving spectral inversion ambiguities in coded data 失效
    用于解析编码数据中的频谱反演模糊度的方法和装置

    公开(公告)号：US06198774B1

    公开(公告)日：2001-03-06

    申请号：US09035637

    申请日：1998-03-05

    申请人： Alan Gatherer

    发明人： Alan Gatherer

    IPC分类号： H04L2302

    CPC分类号： H04L27/34 ,  Y10T70/409 ,  Y10T70/5009

    摘要： Spectral ambiguities are resolved in transmitting data across a data communications channel from a local transmitter to a remote receiver using a quadrature amplitude modulation (QAM) scheme by augmenting the encoding-decoding process at the transmitter and receiver. At the transmitter, the encoding process is augmented by converting the mappings (Ik, Qk) into mappings (Ĩk, {tilde over (Q)}k), where Ĩk=Ik and {tilde over (Q)}k=|Qk|&agr;k and wherein &agr;k=sign({tilde over (Q)}k-1)sign(Qk). At the receiver, the decoding process is augmented by converting the mappings (k, k) into mappings (k, k), where k=k and k=|k|&bgr;k and wherein &bgr;k=sign(k)sign(k−1).

    摘要翻译： 在通过增加发射机和接收机处的编码解码过程的正交幅度调制（QAM）方案中，通过数据通信信道从本地发射机到远程接收机的数据传输中解析出光谱模糊。 在发射机处，通过将映射（Ik，Qk）转换为映射（Ĩk，{tilde over（Q）} k）来增强编码处理，其中Ĩk= Ik和{tilde over（Q）} k = | Qk | alphak，其中alphak = sign（{tilde over（Q）} k-1）sign（Qk）。 在接收机处，通过转换映射（ k， k）到映射（ k， =“US06198774-20010306-P00004.TIF”ID =“CUSTOM-CHARACTER-00004”>其中 k = k和 k | betak，其中betak = sign（ k）sign（ k-1）。

    Spread spectrum multipath combination
    62.
    发明授权
    Spread spectrum multipath combination 有权
    扩频多径组合

    公开(公告)号：US07457381B1

    公开(公告)日：2008-11-25

    申请号：US09659431

    申请日：2000-09-08

    申请人： Srinath Hosur ,  Alan Gatherer ,  Eko N. Onggosanusi

    发明人： Srinath Hosur ,  Alan Gatherer ,  Eko N. Onggosanusi

    IPC分类号： H04B7/10 ,  H04L1/02

    CPC分类号： H04B7/0857

    摘要： Multipath relative channel estimations for weighting maximal ratio combining of RAKE detectors in wireless communication systems uses maximal eigenvectors of covariance matrices of path signals. Estimates for close-in and outlying sets of symbols provides linear time change channel estimation.

    摘要翻译： 无线通信系统中RAKE检测器加权最大比组合的多路径相对信道估计使用路径信号的协方差矩阵的最大特征向量。 近似和偏离的符号组的估计提供线性时变信道估计。

    Beam Forming for Transmit Using Bluetooth Modified Hopping Sequences (BFTBMH)
    63.
    发明申请
    Beam Forming for Transmit Using Bluetooth Modified Hopping Sequences (BFTBMH) 有权
    使用蓝牙修改跳跃序列（BFTBMH）发送的波束形成

    公开(公告)号：US20060280143A1

    公开(公告)日：2006-12-14

    申请号：US11466270

    申请日：2006-08-22

    申请人： Anand Dabak ,  Mohammed Nafie ,  Timothy Schmidl ,  Alan Gatherer

    发明人： Anand Dabak ,  Mohammed Nafie ,  Timothy Schmidl ,  Alan Gatherer

    IPC分类号： H04Q7/00 ,  H04L12/56

    CPC分类号： H01Q3/22 ,  H01Q1/2291 ,  H04B1/713 ,  H04B7/0615 ,  H04B7/0697 ,  H04B7/0848 ,  H04W84/18

    摘要： A communication circuit (28) is designed with a signal processing circuit (370) arranged to produce a first plurality of data signals and receive a second plurality of data signals. A transmit circuit (364) is coupled to receive the first plurality of data signals and transmit each data signal of the first plurality of data signals on a respective transmit frequency in a predetermined sequence of transmit frequencies. A receive circuit (362) is coupled to receive each data signal of the second plurality of data signals from a remote transmitter on the respective transmit frequency in the predetermined sequence. The receive circuit applies the second plurality of data signals to the signal processing circuit.

    摘要翻译： 通信电路（28）被设计成具有被配置为产生第一多个数据信号并接收第二多个数据信号的信号处理电路（370）。 发射电路（364）被耦合以接收第一多个数据信号，并且以预定的发射频率的顺序在相应的发射频率上发射第一多个数据信号的每个数据信号。 接收电路（362）被耦合以便以预定顺序在相应发射频率上从远程发射机接收第二多个数据信号的每个数据信号。 接收电路将第二多个数据信号施加到信号处理电路。

    Cascade map decoder and method
    65.
    发明授权
    Cascade map decoder and method 有权
    级联地图解码器和方法

    公开(公告)号：US07020827B2

    公开(公告)日：2006-03-28

    申请号：US10032859

    申请日：2001-12-28

    申请人： Alan Gatherer ,  Tod D. Wolf

    发明人： Alan Gatherer ,  Tod D. Wolf

    IPC分类号： H03M13/03 ,  H03M13/00

    CPC分类号： H03M13/3905 ,  H03M13/27 ,  H03M13/2957 ,  H03M13/3922 ,  H03M13/3927 ,  H03M13/395 ,  H03M13/3972 ,  H03M13/6561

    摘要： MAP decoder with cascade architecture. Iterative Turbo decoders can use two such cascade MAP decoders with feedback in conjunction with interleaver and deinterleaver where the MAP decoders generate extrinsic information for iterations. The cascade architecture limits the required number of max* blocks which compute the logarithm of a sum of exponentials as part of the BCJR method.

    摘要翻译： MAP解码器具有级联架构。 迭代Turbo解码器可以使用两个这样的级联MAP解码器，其中反馈与交织器和解交织器结合，其中MAP解码器生成用于迭代的外在信息。 级联架构限制了所需数量的max *块，它们计算指数之和的对数作为BCJR方法的一部分。

    Central office line card with code recognition for increasing data rates over PSTN
    68.
    发明授权
    Central office line card with code recognition for increasing data rates over PSTN 有权
    中央办公室线卡，具有通过PSTN增加数据速率的代码识别

    公开(公告)号：US06996118B2

    公开(公告)日：2006-02-07

    申请号：US09953035

    申请日：2001-09-13

    申请人： Keith L. Quiring ,  Alan Gatherer

    发明人： Keith L. Quiring ,  Alan Gatherer

    IPC分类号： H04J3/16

    CPC分类号： H04M3/005

    摘要： A linecard (175) permits an increased rate connection between a subscriber (15) and a service provider (40) over the PSTN (50) includes an analog interface (152) a digital interface (165) coupled to the digital backplane (170) to the service provider's host server (34), a conversion circuit (258) interspersed between the analog interface (152) and the digital interface (165), and a linecard microcontroller (300) configured to request bandwidth on the backplane (170) A linecard (175) incorporates a codec (250) with a code recognition mechanism (200) to monitor the Pulse Code Modulated (PCM) input from the provider. The code recognition mechanism (200) provides a way to dynamically allocate and deallocate timeslots on the backplane (170).

    摘要翻译： 线路卡（175）允许通过PSTN（50）的用户（15）和服务提供商（40）之间的增加的速率连接包括模拟接口（152）耦合到数字背板（170）的数字接口（165） 分布在模拟接口（152）和数字接口（165）之间的转换电路（258）以及被配置为在背板（170）A上请求带宽的线卡微控制器（300）向服务提供商的主机服务器（34） 线卡（175）包含具有代码识别机构（200）的编解码器（250），以监视来自提供商的脉冲编码调制（PCM）输入。 代码识别机制（200）提供了一种在背板（170）上动态地分配和释放时隙的方法。

    Central office line card with code recognition for increasing data rates over PSTN
    69.
    发明授权
    Central office line card with code recognition for increasing data rates over PSTN 有权

    公开(公告)号：US06996091B2

    公开(公告)日：2006-02-07

    申请号：US09953036

    申请日：2001-09-13

    申请人： Keith L. Quiring ,  Alan Gatherer

    发明人： Keith L. Quiring ,  Alan Gatherer

    IPC分类号： H04L12/66

    CPC分类号： H04L12/2865 ,  H04L12/2856 ,  H04L12/2896 ,  H04M3/005 ,  H04M3/007

    摘要： A linecard (175) permits an increased rate connection between a subscriber (15) and a service provider (40) over the PSTN (50) includes an analog interface (152) a digital interface (165) coupled to the digital backplane (170) to the service provider's host server (34), a conversion circuit (258) interspersed between the analog interface (152) and the digital interface (165), and a linecard microcontroller (300) configured to request bandwidth on the backplane (170) A linecard (175) incorporates a codec (250) with a code recognition mechanism (200) to monitor the Pulse Code Modulated (PCM) input from the provider. The code recognition mechanism (200) provides a way to dynamically allocate and deallocate timeslots on the backplane (170).