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    SYSTEM AND METHOD FOR TESTING A RADIO FREQUENCY MULTIPLE-INPUT MULTIPLE-OUTPUT DATA PACKET TRANSCEIVER WHILE FORCING FEWER DATA STREAMS
    15.
    发明申请
    SYSTEM AND METHOD FOR TESTING A RADIO FREQUENCY MULTIPLE-INPUT MULTIPLE-OUTPUT DATA PACKET TRANSCEIVER WHILE FORCING FEWER DATA STREAMS 审中-公开
    用于测试无线电频率多路输入多路输出数据包收发器的系统和方法

    公开(公告)号：WO2014144410A1

    公开(公告)日：2014-09-18

    申请号：PCT/US2014/028809

    申请日：2014-03-14

    Applicant: LITEPOINT CORPORATION

    Inventor： OLGAARD, Christian Volf

    IPC: H04B17/00 ,  H04B7/04

    CPC classification number: H04L1/24 ,  H04B7/0413 ,  H04B17/3911 ,  H04L1/06 ,  H04L1/241

    Abstract: In accordance with the presently claimed invention, a system and method are provided for testing multiple-input, multiple-output wireless radiofrequency (RF) packet data signal transceivers while operating in such ways as to communicate their signals using various combinations or permutations of packet data streams without requiring termination or re-establishment of communication links following transitions from one combination or permutation of packet data streams to another.

    Abstract translation: 根据目前要求保护的发明，提供了一种用于测试多输入多输出无线射频（RF）分组数据信号收发机的系统和方法，同时以使用分组数据的各种组合或排列来传送其信号的方式操作 流，而不需要在从一个组合或分组数据流的排列转换到另一个组合之后终止或重新建立通信链路。

    COMMUNICATION SYSTEM
    16.
    发明申请
    COMMUNICATION SYSTEM 审中-公开
    通讯系统

    公开(公告)号：WO2006048742A1

    公开(公告)日：2006-05-11

    申请号：PCT/IB2005/003292

    申请日：2005-10-27

    Applicant: NOKIA CORPORATION ,  MUSZYNSKI, Peter ,  JAATINEN, Jussi ,  KAIKKONEN, Jorma

    Inventor： MUSZYNSKI, Peter ,  JAATINEN, Jussi ,  KAIKKONEN, Jorma

    IPC: H04Q7/34

    CPC classification number: H04L1/241 ,  H04L1/1812 ,  H04W24/00 ,  H04W88/08

    Abstract: There is disclosed a method of testing a network access element configured for demodulating an enhanced dedicated channel, E-DCH, with hybrid automatic repeat request, HARQ, functionality, the method comprising: transmitting E-DCH packets to the network access element; and selectively autonomously retransmitting E-DCH packets to the network access element.

    Abstract translation: 公开了一种测试网络接入元件的方法，所述网络接入元件被配置用于利用混合自动重复请求（HARQ）功能来解调增强型专用信道E-DCH，所述方法包括：向网络接入元件发送E-DCH分组; 并且选择性地将E-DCH分组自主地重传到网络接入单元。

    METHOD FOR PERFORMANCE MONITORING OF DATA TRANSPARENT COMMUNICATION LINKS
    17.
    发明申请
    METHOD FOR PERFORMANCE MONITORING OF DATA TRANSPARENT COMMUNICATION LINKS 审中-公开
    数据通信链路性能监控方法

    公开(公告)号：WO01006676A1

    公开(公告)日：2001-01-25

    申请号：PCT/US2000/018982

    申请日：2000-07-12

    IPC: G06F11/34 ,  H04B3/46 ,  H04B17/00 ,  H04L1/20 ,  H04L1/24 ,  G06F11/00

    CPC classification number: H04L1/20 ,  G06F11/349 ,  H04B3/46 ,  H04L1/241

    Abstract: A method for approximating the bit error rate (BER) contribution to a data symbol stream of a first channel by additionally passing the stream through a second channel of similar noise figure. The bit outputs of the two channels are sampled (16), compared (18), and a record is made of the number of times the sampled data (a one or zero) of the first channel differs from the data of the second channel (32). This number is approximately twice the BER contribution of the first channel.

    Abstract translation: 一种用于通过附加地使流穿过类似噪声系数的第二信道来近似对第一信道的数据符号流的误码率（BER）贡献的方法。 两个通道的位输出被采样（16），比较（18），并且记录第一通道的采样数据（一个或零）与第二通道的数据的次数的差异 32）。 这个数字大约是第一个通道的BER贡献的两倍。

    BIT ERROR MEASURING INSTRUMENT
    18.
    发明申请
    BIT ERROR MEASURING INSTRUMENT 审中-公开
    位错误测量仪器

    公开(公告)号：WO1996026451A1

    公开(公告)日：1996-08-29

    申请号：PCT/JP1996000405

    申请日：1996-02-22

    Applicant: ADVANTEST CORPORATION ,  SOTOME, Tetsuo ,  NAKAJIMA, Takayuki ,  OSAWA, Kazutaka ,  SHIMAWAKI, Kazuhiro ,  SHIROYAMA, Kouichi

    Inventor： ADVANTEST CORPORATION

    IPC: G01R31/3177

    CPC classification number: G01R31/31813 ,  G01R31/31919 ,  G06F11/24 ,  H04L1/241 ,  H04L1/242

    Abstract: A pattern generating means, a multiplexing means, and a pattern position specifying-recording means of a testing device used for testing bit errors. An M-channel pattern generator and a pattern generation control section (10) which allows the pattern generator to output a pattern while successively switching the generating section of each channel and when a certain channel is selected to output a pattern, controls the pattern generating operations of the other channels are provided in the first place. Secondly, a clock frequency difference detecting section (150) which measures the frequency of an input clock (111), detects a frequency change that exceeds a prescribed frequency difference by comparing the measured frequency with the frequency value measured during the preceding phase inverting operation, judges whether or not measurement is being conducted, and controls the permission/inhibition of the phase inverting operation of a clock switching circuit (128) is provided. Thirdly, a pattern position recording section (210) which stores the information about the reference pattern generating position of a reference pattern generator (262) in a recording memory (220) when an error detecting signal (265a) from a collating device (265) is detected, is provided.

    Abstract translation: 用于测试比特错误的测试装置的模式产生装置，多路复用装置和模式位置指定记录装置。 一种M通道图案生成器和图形生成控制部（10），其能够使图案生成器在连续切换各声道的生成部的同时输出图形，并且当选择某一声道以输出图形时，控制图形生成动作 的其他渠道首先提供。 其次，测量输入时钟（111）的频率的时钟频率差检测部（150）通过将测得的频率与前一相位反转操作中测量的频率值进行比较来检测超过规定频率差的频率变化， 判断是否进行测量，并且控制时钟切换电路（128）的相位反转操作的允许/禁止。 第三，当来自对照装置（265）的错误检测信号（265a）从存储器（220）中存储关于参考图形生成器（262）的参考图形生成位置的信息的图案位置记录部分（210） 被检测到。

    LOOPBACK CIRCUIT
    19.
    发明申请
    LOOPBACK CIRCUIT 审中-公开
    回路电路

    公开(公告)号：WO2008095990A1

    公开(公告)日：2008-08-14

    申请号：PCT/EP2008/051524

    申请日：2008-02-07

    Applicant: TEXAS INSTRUMENTS LIMITED ,  SIMPSON, Richard

    Inventor： SIMPSON, Richard

    IPC: H04L1/24

    CPC classification number: H04L1/241 ,  H04L2025/03477 ,  H04L2025/0349

    Abstract: A loopback circuit connecting the output of a receiver section to a transmitter section of a transceiver circuit has two or more loopback channels. In this way, the data rate is reduced, reducing the signal loss that occurs even over such short distances at very high data rates.

    Abstract translation: 将接收机部分的输出连接到收发器电路的发射机部分的环回电路具有两个或多个环回信道。 以这种方式，数据速率降低，即使在非常高的数据速率下在这么短的距离上也能减少信号损失。

    HIGH PERFORMANCE MODEM USING PILOTE SYMBOLS FOR EQUALIZATION AND FRAME SYNCHRONIZATION
    20.
    发明申请
    HIGH PERFORMANCE MODEM USING PILOTE SYMBOLS FOR EQUALIZATION AND FRAME SYNCHRONIZATION 审中-公开
    使用PILOTE符号进行均衡和帧同步的高性能调制解调器

    公开(公告)号：WO1995026081A1

    公开(公告)日：1995-09-28

    申请号：PCT/US1995003415

    申请日：1995-03-17

    Applicant: GLENAYRE ELECTRONICS, INC.

    Inventor： GLENAYRE ELECTRONICS, INC. ,  MARCHETTO, Robert, F. ,  STEWART, Todd, A. ,  FAWCETT, Glenn, S.

    IPC: H04B01/38

    CPC classification number: H04H20/67 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/241 ,  H04L1/242 ,  H04L7/0083 ,  H04L7/041 ,  H04L7/043 ,  H04L7/046 ,  H04L27/34 ,  H04L27/3416

    Abstract: A modulator (fig. 2) that modulates and encodes data using data symbols (52), interspersed with pilot symbols (56), for transmission to another modem, and a demodulator (fig. 3) that decodes data symobls or a signal received from another modem. In the demodulator, a received signal is sampled at four times the symbol rate (104). The sampled signal is converted to quadrature signals and low-pass filtered to produce a complex baseband signal (120). Data symbols in the complex baseband signal are sampled (146) in synchronization with the start of each symbol based on the pilot symbols that are interspersed in the signal. By processing the pilot symbols, full modem synchronization is maintained down to a very low signal-to-noise ratio, through noise bursts, or even when the data symbols representing data are replaced by predefined sequences of data symbols that convey the dots and dashes of Morse code identifying the station transmitting the modulated signal. The continued presence of pilot symbols interspersed with the sequences of data symbols conveying Morse code prevents loss of synchronization between the transmitting station and the receiving station. The pilot symbols are also used to update equalizer tap coefficients in an equalizer (142) of the demodulator, thereby minimizing errors in the output data caused by channel fading, noise, and other effects. In addition, the sequence of pilot symbols is used to delimit data frames, so that bit synchronization and frame synchronization in the data are not required.

    Abstract translation: 使用散布有导频符号（56）的数据符号（52）来调制和编码数据的调制器（图2），用于传输到另一个调制解调器，以及解码器（图3），其解码数据符号或从 另一个调制解调器 在解调器中，以四倍于符号率（104）对接收信号进行采样。 采样信号被转换成正交信号并进行低通滤波以产生复基带信号（120）。 基于散布在信号中的导频符号，复数基带信号中的数据符号与每个符号的开始同步地采样（146）。 通过处理导频符号，完全调制解调器同步通过噪声突发被维持到非常低的信噪比，或者甚至当表示数据的数据符号被传送数据符号的预定义序列替换时，传输的点和破折号 莫尔斯电码识别发射调制信号的电台。 继续存在散布有传送莫尔斯电码的数据符号序列的导频符号防止发射台与接收台之间的同步丢失。 导频符号还用于更新解调器的均衡器（142）中的均衡器抽头系数，从而最小化由信道衰落，噪声和其他效应引起的输出数据中的错误。 另外，使用导频符号序列来定界数据帧，从而不需要数据中的位同步和帧同步。

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