利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

51 条记录 (耗时 0.03 秒)

    Symbol FFT RACH processing methods and devices
    4.
    发明授权
    Symbol FFT RACH processing methods and devices 有权
    符号FFT RACH处理方法和设备

    公开(公告)号：US08634288B2

    公开(公告)日：2014-01-21

    申请号：US13150565

    申请日：2011-06-01

    申请人： Neil McGowan ,  Marthuinus Willem Da Silveira

    发明人： Neil McGowan ,  Marthuinus Willem Da Silveira

    IPC分类号： H04J11/00

    CPC分类号： H04W74/0833 ,  H04L27/265 ,  H04L27/2655

    摘要： Methods and devices for extracting a RACH preamble using as input a number of Fast Fourier Transformed symbols, in order to extract a random access channel (RACH) preamble from a signal received in a base station from a user device, in a radio communication system, are provided. An initial cyclic prefix (symbol CP) is removed prior to performing FFT on symbols. After (1) selecting from the FFT of a symbol frequencies corresponding to the RACH band all other non-RACH frequency bins having been set to zero, (2) shifting the signal to baseband and (3) performing a FFT on the baseband signal, a phase adjustment is performed to compensate for group delays due to symbol CP gaps occurring when generating the baseband signal, the phase adjustment being determined individually for each symbol.

    摘要翻译： 用于提取RACH前同步码的方法和装置，以便使用多个快速傅立叶变换符号来输入，以便在无线电通信系统中从用户装置在基站接收的信号中提取随机接入信道（RACH）前导码， 被提供。 在对符号执行FFT之前，删除初始循环前缀（符号CP）。 在（1）从FFT中选择与RACH频带对应的符号频率，所有其他非RACH频率仓已被设置为零，（2）将信号移位到基带，和（3）对基带信号执行FFT， 执行相位调整以补偿由于在生成基带信号时发生的符号CP间隙引起的组延迟，对于每个符号单独确定相位调整。

    Method and apparatus for processing multiple common frequency signals through a single cable using circulators
    5.
    发明授权
    Method and apparatus for processing multiple common frequency signals through a single cable using circulators 有权
    通过使用循环器的单个电缆处理多个公共频率信号的方法和装置

    公开(公告)号：US08599815B2

    公开(公告)日：2013-12-03

    申请号：US12830651

    申请日：2010-07-06

    申请人： Peter Deane ,  Abdelgader Legnain ,  Neil McGowan ,  Marthinus Da Silveira

    发明人： Peter Deane ,  Abdelgader Legnain ,  Neil McGowan ,  Marthinus Da Silveira

    IPC分类号： H04H20/67 ,  H04B7/216

    CPC分类号： H04B1/40 ,  H04B1/18

    摘要： A method and apparatus for processing multiple signals at a common frequency combined into a single radio frequency cable and subsequently recovering the signals without significant losses, distortion, or cross-talk. The method and apparatus includes processing multiple signals at a common frequency fed through a single radio frequency (RF) cable with or without one or more amplifiers and utilized for either forward or reverse link transmissions. The invention enables a single power amplifier to amplify multiple RF signals that occupy a common frequency channel and after amplification splitting these signals into amplified copies of the originals. The amplified signals may be sent to different antenna ports to illuminate different base station sectors if required. The signal splitting function is performed at the antenna masthead such that this method reduces the number of feeder cables running up the antenna tower by a factor of N, where N is the number of common frequency signals (e.g., the number of sectors) amplified by the single power amplifier. This invention enables a single power amplifier to simultaneously provide all the radio frequency signals necessary to feed a general N input phased array antenna system and form multiple antenna beams uniquely for several individual users simultaneously.

    摘要翻译： 一种用于以合并到单个射频电缆中的共同频率处理多个信号并且随后恢复信号而没有显着损失，失真或串扰的方法和装置。 该方法和装置包括在具有或不具有一个或多个放大器的单个射频（RF）电缆馈送的公共频率处理多个信号，并用于正向或反向链路传输。 本发明使得单个功率放大器可以放大占用公共频率信道的多个RF信号，并且在将这些信号分解成原稿的放大副本之后。 如果需要，放大的信号可以被发送到不同的天线端口以照亮不同的基站扇区。 信号分离功能在天线标头上进行，使得该方法将以天线塔运行的馈电电缆的数量减少N倍，其中N是通过频率信号放大的共频率信号（例如，扇区数） 单功率放大器。 本发明使得单个功率放大器能够同时提供馈送一般N输入相控阵天线系统所必需的所有射频信号，同时为多个个体用户同时形成多个天线波束。

    Multi-carrier peak power reduction in frequency hopping systems
    6.
    发明授权
    Multi-carrier peak power reduction in frequency hopping systems 有权
    跳频系统中的多载波峰值功率降低

    公开(公告)号：US08548085B2

    公开(公告)日：2013-10-01

    申请号：US13162748

    申请日：2011-06-17

    申请人： Neil McGowan ,  Marthinus Willem Da Silveira

    发明人： Neil McGowan ,  Marthinus Willem Da Silveira

    IPC分类号： H04B7/02 ,  H04L1/02

    CPC分类号： H04L27/2624

    摘要： Peak power reduction in transmit chains of frequency hopping, multi-band radiocommunication devices is performed. Filtering and, optionally, interpolation of a signal being processed for peak power reduction can be performed only in an error signal path or in both an error signal path and a primary signal path. Alternatively, a sufficiently high sample rate can be used in support of error signal generation.

    摘要翻译： 跳频发射链中的峰值功率降低，多频带无线电通信设备被执行。 只能在误差信号路径中或在误差信号路径和主信号路径两者中进行正在处理的用于峰值功率降低的信号的滤波和可选的内插。 或者，可以使用足够高的采样率来支持误差信号产生。

    Methods, testing apparatuses and devices for removing cross coupling effects in antenna arrays
    8.
    发明授权
    Methods, testing apparatuses and devices for removing cross coupling effects in antenna arrays 有权
    用于去除天线阵列中的交叉耦合效应的方法，测试装置和装置

    公开(公告)号：US08913513B2

    公开(公告)日：2014-12-16

    申请号：US13126411

    申请日：2010-09-24

    申请人： Neil McGowan ,  Peter Deane

    发明人： Neil McGowan ,  Peter Deane

    IPC分类号： H04L12/26 ,  H04B7/00 ,  H01Q1/52 ,  H01Q3/26

    CPC分类号： H01Q1/523 ,  H01Q3/2617

    摘要： Methods and devices for removing cross coupling effects between elements of an antenna array (110) are provided. Cross coupling coefficients between all pairs of antenna elements of the antenna array are predetermined to minimize a total power in theoretical null points calculated without considering the cross element effects. A transceiver (100) includes a multiplexing block (105) configured to receive data signals to be transmitted via the antenna elements and to output to at least one of the antenna elements, a sum signal including (i) a data signal, which data signal is designated for the at least one antenna element, and (ii) a linear combination of data signals designated for other antenna elements of the antenna array, each of the data signals in the linear combination being weighted by a respective cross coupling coefficient between the at least one antenna element and an antenna element emitting the each of the data signals.

    摘要翻译： 提供了用于去除天线阵列（110）的元件之间的交叉耦合效应的方法和装置。 预先确定天线阵列的所有天线元件对之间的交叉耦合系数以最小化在不考虑交叉元素效应的情况下计算的理论空点的总功率。 收发器（100）包括多路复用块（105），被配置为接收要通过天线元件传输的数据信号并将至少一个天线元件输出到和信号，该和信号包括（i）数据信号，哪个数据信号 被指定用于至少一个天线元件，以及（ii）被指定用于天线阵列的其他天线元件的数据信号的线性组合，线性组合中的每个数据信号由相应的交叉耦合系数 至少一个天线元件和发射每个数据信号的天线元件。

    Robust antenna array
    9.
    发明授权
    Robust antenna array 有权
    坚固的天线阵列

    公开(公告)号：US08588334B2

    公开(公告)日：2013-11-19

    申请号：US13188904

    申请日：2011-07-22

    申请人： Neil McGowan ,  Marthuinus Willem Da Silveira

    发明人： Neil McGowan ,  Marthuinus Willem Da Silveira

    IPC分类号： H04L27/00

    CPC分类号： H01Q1/246 ,  H01Q21/08 ,  H01Q21/26

    摘要： A wireless communication system that includes a robust transmitter array. The robust transmitter array includes an antenna array system with at least one column, at least one antenna element, and at least one polarization, a plurality of transmitter devices to transmit analog voice/data signals through the antenna array system, and a signal processor. The signal processor modifies two or more input signals in the event of a transmitter device failure such that substantially similar amounts of each of the two or more input signals are output from the transmitter system to the antenna array system, and wherein substantially less transmitted signal power is lost than in the case wherein the signal processor does not modify the two or more input signals in the event of a transmitter failure.

    摘要翻译： 一种包括鲁棒发射机阵列的无线通信系统。 鲁棒的发射机阵列包括具有至少一列，至少一个天线元件和至少一个极化的天线阵列系统，用于通过天线阵列系统传输模拟语音/数据信号的多个发射机设备，以及信号处理器。 在发射机设备故障的情况下，信号处理器修改两个或更多个输入信号，使得两个或多个输入信号中的每一个的基本相似的量从发射机系统输出到天线阵列系统，并且其中基本上较少的发射信号功率 在信号处理器在发射机故障的情况下不修改两个或更多个输入信号的情况下丢失。