利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

61 条记录 (耗时 0.028 秒)

    Doped multi-rate spread spectrum composite code
    1.
    发明授权
    Doped multi-rate spread spectrum composite code 有权
    掺杂多速率扩频复合码

    公开(公告)号：US07526010B1

    公开(公告)日：2009-04-28

    申请号：US10915776

    申请日：2004-08-10

    申请人： Johnny M. Harris ,  Samuel C. Kingston ,  Thomas R. Giallorenzi ,  Dan M. Griffin ,  David W. Thorson ,  Richard B. Ertel

    发明人： Johnny M. Harris ,  Samuel C. Kingston ,  Thomas R. Giallorenzi ,  Dan M. Griffin ,  David W. Thorson ,  Richard B. Ertel

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7093

    摘要： A composite code is made for example by exclusive-OR'ing each real element of a first constituent code A with each element of a second constituent code B to obtain a basic composite code. To suppress autocorrelation, differing numbers of doping code elements are inserted between code segments made from combining each element of code A with an element of code B. A matched filter first stage removes from its input the A code and any doping code added to it, summing the elements of code A. A matched filter second stage removes from its input the B code and any doping code added at the second level. The summed elements of code B are the input to the first stage. Optionally, the summed elements of the doping code at any level may be delayed and summed with the elements of the A code in the first stage.

    摘要翻译： 例如，通过将第一组成代码A的每个实际元素与第二组成代码B的每个元素进行异或运算以获得基本复合代码来进行复合代码。 为了抑制自相关，在将代码A的每个元素与代码B的元素组合而形成的代码段之间插入不同数量的掺杂代码元素。匹配滤波器第一级从其输入中去除A代码和添加到其中的任何掺杂代码， 对代码A的元素求和。匹配滤波器第二级从其输入中移除B代码和在第二级添加的任何掺杂代码。 代码B的总和元素是第一阶段的输入。 可选地，任何级别的掺杂代码的总和元素可以被延迟并与第一级中的A代码的元素相加。

    Multi-rate spread spectrum composite code
    2.
    发明授权
    Multi-rate spread spectrum composite code 有权
    多速率扩频复合码

    公开(公告)号：US07602835B1

    公开(公告)日：2009-10-13

    申请号：US10915777

    申请日：2004-08-10

    申请人： Samuel C. Kingston ,  Johnny M. Harris ,  Thomas R. Giallorenzi ,  Dan M. Griffin ,  David W. Thorson

    发明人： Samuel C. Kingston ,  Johnny M. Harris ,  Thomas R. Giallorenzi ,  Dan M. Griffin ,  David W. Thorson

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7095 ,  H04B2201/70703 ,  H04B2201/70707

    摘要： A correlator despreads a P/N long code constructed from two or more constituent codes A, B, C having N, M and L elements respectively. In a third stage, L filter taps decorrelate elements of the third constituent code from the input received signal, leaving elements of code AB. The outputs of the third stage delay line are summed and input into a second stage delay line having M filter taps to decorrelate the elements of the second constituent code from the input to the second stage, leaving elements of code A. The outputs of the second stage delay line are summed and input to a first stage delay line having N filter taps. The output of the first stage delay line is summed and input into a shift register. An energy peak in the shift register indicates the phase of the P/N elements in the register is proper.

    摘要翻译： 相关器分别从具有N，M和L个元素的两个或更多个组成码A，B，C构成的P / N长码解扩。 在第三阶段，L滤波器从输入接收信号抽头去除关联第三组成码的元素，留下代码AB的元素。 将第三级延迟线的输出相加并输入具有M个滤波器抽头的第二级延迟线，以将第二组成码的元素从输入到第二级去相关，留下代码A的元素。第二级延迟线的输出 相位延迟线被相加并输入到具有N个滤波器抽头的第一级延迟线。 将第一级延迟线的输出相加并输入到移位寄存器。 移位寄存器中的能量峰值表示寄存器中P / N元件的相位是否正确。

    Hybrid multiple access waveform, method, and apparatus
    3.
    发明授权
    Hybrid multiple access waveform, method, and apparatus 有权
    混合多址波形，方法和装置

    公开(公告)号：US07558238B1

    公开(公告)日：2009-07-07

    申请号：US11335439

    申请日：2006-01-18

    申请人： June Sun ,  Thomas R. Giallorenzi ,  Michael Rice ,  Samuel C. Kingston ,  Johnny M. Harris

    发明人： June Sun ,  Thomas R. Giallorenzi ,  Michael Rice ,  Samuel C. Kingston ,  Johnny M. Harris

    IPC分类号： H04B7/216

    CPC分类号： H04B7/2615 ,  H04B7/2618 ,  H04W74/02

    摘要： A method for partitioning communication resource among multiple users partitions a portion of an available communication resource into a series of time-frequency slots, and allows multiple users to transmit in one of at least two available modes within a time-frequency slot. Preferably, one mode is time division of the time-frequency slot into time sub-slots, and another mode is code division of the time-frequency slot according to different spreading codes that spread an individual user's signal only within the subject time-frequency slot. Further details as to pilot signals, guard intervals, and payloads are described.

    摘要翻译： 一种用于在多个用户中分配通信资源的方法将可用通信资源的一部分划分成一系列时隙，并且允许多个用户以时隙内的至少两种可用模式之一进行发送。 优选地，一种模式是时间 - 时隙到时间子时隙的时分，另一种模式是根据不同的扩展码对时间 - 时隙进行码分割，这些扩展码仅在主体时隙内扩展单个用户的信号 。 对导频信号，保护间隔和有效负载的进一步细节进行了说明。

    IIR sliding window integrator and search engine delay component for reducing the preamble size of a discovery burst
    4.
    发明授权
    IIR sliding window integrator and search engine delay component for reducing the preamble size of a discovery burst 有权
    IIR滑动窗口积分器和搜索引擎延迟组件，用于减少发现突发的前导码大小

    公开(公告)号：US08396097B1

    公开(公告)日：2013-03-12

    申请号：US11821741

    申请日：2007-06-25

    申请人： Thomas R. Giallorenzi ,  Johnny M. Harris ,  Matthew A. Lake ,  Samuel C. Kingston ,  Myren Iverson

    发明人： Thomas R. Giallorenzi ,  Johnny M. Harris ,  Matthew A. Lake ,  Samuel C. Kingston ,  Myren Iverson

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7087 ,  H04B1/7095 ,  H04B2201/70733

    摘要： In one exemplary embodiment of the invention, a device includes: a first frequency search engine configured to receive input values and determine a frequency of a signal to be within a first frequency band; a second delay component configured to store at least a portion of the plurality of input values; and a second frequency search engine configured to determine the frequency of the signal to be within a second band that is a subset of the first band. The first frequency search engine includes: a shift register configured to store bits of the input values; a combining circuit configured to combine bits of the plurality of input values; a first delay component configured to serially store a plurality of accumulator values; and a feedback circuit configured to add a function of the first delay component output to a next accumulator value to obtain a modified next accumulator value.

    摘要翻译： 在本发明的一个示例性实施例中，一种设备包括：第一频率搜索引擎，被配置为接收输入值并确定信号在第一频带内的频率; 第二延迟部件，被配置为存储所述多个输入值的至少一部分; 以及第二频率搜索引擎，被配置为确定所述信号的频率在作为所述第一频带的子集的第二频带内。 第一频率搜索引擎包括：移位寄存器，被配置为存储输入值的位; 组合电路，被配置为组合所述多个输入值的位; 第一延迟部件，被配置为串行存储多个累加器值; 以及反馈电路，被配置为将第一延迟分量输出的功能添加到下一个累加器值，以获得修改的下一个累加器值。

    Method and apparatus for efficient carrier bin search for a composite spreading code
    5.
    发明授权
    Method and apparatus for efficient carrier bin search for a composite spreading code 有权
    用于复合扩展码的有效载波箱搜索的方法和装置

    公开(公告)号：US07436878B1

    公开(公告)日：2008-10-14

    申请号：US11136943

    申请日：2005-05-24

    申请人： Johnny M. Harris ,  Samuel C. Kingston ,  Thomas R. Giallorenzi ,  Eric K. Hall ,  Richard B. Ertel

    发明人： Johnny M. Harris ,  Samuel C. Kingston ,  Thomas R. Giallorenzi ,  Eric K. Hall ,  Richard B. Ertel

    IPC分类号： H04L27/30

    CPC分类号： H04L27/0014 ,  H04B1/70752 ,  H04B1/7087 ,  H04B1/7093 ,  H04L2027/0065

    摘要： A matched filter decorrelator is described for efficiently performing a carrier frequency search while despreading a P/N long code constructed from two or more constituent codes such as codes A, B, C. The received signal is phase rotated into a frequency bin and partially despread, preferably over all but one of the constituent codes. To despread the final constituent code, the partially despread signal is input in parallel into frequency bins, where a phase rotator sets each input to a different bin. The frequency bins are then despread in parallel over the final constituent code, and an energy peak in one accumulator indicates which bin is the carrier frequency. Alternatively, a Fourier transform could be used over each of the frequency bins. By partially despreading prior to division into carrier frequency bins, hardware and computational burden are reduced as compared to prior art decorrelators. The present invention is particularly apt for use with an acquisition burst in a secure network.

    摘要翻译： 描述了匹配滤波器去相关器，用于有效地执行载波频率搜索，同时对从诸如码A，B，C的两个或更多个成分码构成的P / N长码进行解扩。所接收的信号被相位旋转到频率仓并部分解扩 ，优选除了一个组成代码之外。 为了对最终的组成码进行解扩，部分解扩信号被并行地输入到频率仓中，其中相位旋转器将每个输入设置到不同的仓。 然后，频率仓在最终组成码上并行地解扩，并且一个累加器中的能量峰值指示哪个bin是载波频率。 或者，可以在每个频率仓上使用傅里叶变换。 通过在划分为载波频率仓之前进行部分解扩，与现有技术的去相关器相比，硬件和计算负担减小。 本发明特别适用于安全网络中的采集突发。

    Spread spectrum signal detection with inhibiting for known sidelobe locations
    8.
    发明授权
    Spread spectrum signal detection with inhibiting for known sidelobe locations 有权
    扩展频谱信号检测，抑制已知的旁瓣位置

    公开(公告)号：US07643537B1

    公开(公告)日：2010-01-05

    申请号：US11657178

    申请日：2007-01-23

    申请人： Thomas R. Giallorenzi ,  Matt Lake ,  Samuel C. Kingston ,  Johnny M. Harris

    发明人： Thomas R. Giallorenzi ,  Matt Lake ,  Samuel C. Kingston ,  Johnny M. Harris

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7093 ,  H04B1/7117

    摘要： A method and apparatus for detecting a spread spectrum signal is described. Signals can be detected using correlation techniques. When a signal is detected, declaring of signal presence is inhibited for offsets of signal parameters from the parameters of the detected signal, where the offset corresponds to a known sidelobe of the spreading code. This helps to reduce false detections caused by sidelobes of the spreading code.

    摘要翻译： 描述了一种用于检测扩频信号的方法和装置。 可以使用相关技术检测信号。 当检测到信号时，根据检测信号的参数来抑制信号参数的偏移，其中偏移对应于扩展码的已知旁瓣。 这有助于减少由扩展码的旁瓣引起的错误检测。

    Transmission scheduling for TDMA networks
    9.
    发明授权
    Transmission scheduling for TDMA networks 有权
    TDMA网络的传输调度

    公开(公告)号：US07596113B1

    公开(公告)日：2009-09-29

    申请号：US11540138

    申请日：2006-09-28

    申请人： Samuel C. Kingston ,  Thomas R. Giallorenzi ,  Johnny M. Harris

    发明人： Samuel C. Kingston ,  Thomas R. Giallorenzi ,  Johnny M. Harris

    IPC分类号： H04B7/216

    CPC分类号： H04W56/003 ,  H04W56/006

    摘要： A technique for scheduling transmissions for a plurality of transmitters in a TDMA network is described. The technique includes assigning guard time between each pair of successive transmitters, where the guard time is related to the propagation delay between the pair of successive transmitters. Total guard time is minimized by selecting an order of transmission for the plurality of transmitters to minimize the total guard time.

    摘要翻译： 描述了一种用于调度TDMA网络中的多个发射机的传输的技术。 该技术包括在每对连续发射机之间分配保护时间，其中保护时间与一对连续发射机之间的传播延迟有关。 通过选择多个发射机的传输顺序来最小化总保护时间，以最小化总保护时间。

    Waveform design hopping system and method
    10.
    发明授权
    Waveform design hopping system and method 有权
    波形设计跳频系统及方法

    公开(公告)号：US07978747B1

    公开(公告)日：2011-07-12

    申请号：US11351370

    申请日：2006-02-09

    申请人： Johnny M. Harris ,  Thomas R. Giallorenzi ,  Randal R. Sylvester ,  Richard Galindez ,  Kevin L. Hyer ,  Larry S. Thomson ,  Samuel C. Kingston

    发明人： Johnny M. Harris ,  Thomas R. Giallorenzi ,  Randal R. Sylvester ,  Richard Galindez ,  Kevin L. Hyer ,  Larry S. Thomson ,  Samuel C. Kingston

    IPC分类号： H04B1/00

    CPC分类号： H04J13/0074 ,  H04B1/707 ,  H04J13/0077 ,  H04J13/107

    摘要： A method of transmitting a spread spectrum signal in a single communication session between a transmitter and a receiver, stores a series of N unique waveform designs and a hopping sequence in a transmitter memory. A signal is transmitted to a receiver according to the hopping sequence using the plurality of N unique waveform designs. Preferably, each waveform design is characterized by a unique composite spreading code that is formed by at least some of a plurality of constituent code segments. Alternatively or additionally, the waveform designs may differ by any one or more of code length, symbol or chip timing or phase, frame or burst structure, chip offset, modulation, error control coding, encryption scheme, or scrambling code. A transmitter and receiver are also disclosed, as is the concept of appending chips between symbols to expand the universe of unique spreading codes without incurring an increase in processing gain.

    摘要翻译： 在发射机和接收机之间的单个通信会话中发送扩频信号的方法在发射机存储器中存储一系列N个唯一波形设计和跳频序列。 使用多个N个唯一波形设计，根据跳频序列将信号发送到接收机。 优选地，每个波形设计的特征在于由多个构成代码段中的至少一些构成的独特的复合扩展码。 替代地或附加地，波形设计可以由码长，符号或码片定时或相位，帧或突发结构，码片偏移，调制，错误控制编码，加密方案或扰码中的任何一个或多个来区分。 还公开了发射机和接收机，以及在符号之间附加码片的概念，以扩展独特扩展码的宇宙，而不会增加处理增益。