中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

280 records (took 0.018 seconds)

    PROCESS FOR DETECTING NON-LINEAR BEHAVIOUR IN A DIGITAL DATA TRANSMISSION PATH TO BE EXAMINED
    21.
    发明申请
    PROCESS FOR DETECTING NON-LINEAR BEHAVIOUR IN A DIGITAL DATA TRANSMISSION PATH TO BE EXAMINED 审中-公开
    检测数字数据传输路径中非线性行为的过程

    公开(公告)号：WO1993017348A1

    公开(公告)日：1993-09-02

    申请号：PCT/DE1993000109

    申请日：1993-02-03

    Applicant: SIEMENS AKTIENGESELLSCHAFT ,  WOLF, Andreas ,  ARWEILER, Hans, Werner

    Inventor： SIEMENS AKTIENGESELLSCHAFT

    IPC: G01R27/28

    CPC classification number: H04L1/242 ,  H04L1/241

    Abstract: To the transmission path (4) is applied a test signal (M') formed from a sequence (m) with spectrum components (S1 ... S10) equidistantly distributed in the frequency range by linkage to an additional function (ZSF). The additional function (ZSF) is selected in such a way that the test signal (M') contains additional spectrum components (ZS1 ... ZS21) besides the spectrum components (S1 ... S10) of the sequence (m). An output signal (M'') received on the output side of the path is evaluated at assessement frequencies (AW1 ... AW10) at which the test signal (M') is free of spectrm components and in which the test signal (M') has additional spectrum components (SA1 ... SA10) after auto-convolution. Additional spectrum components (SA1 ... SA10) occurring at the evaluation frequencies (AW1 ... AW10) directly reveal non-linearity in the transmission path.

    False error detector
    25.
    发明专利
    False error detector 失效
    假错误检测器

    公开(公告)号：JPS59167162A

    公开(公告)日：1984-09-20

    申请号：JP4125783

    申请日：1983-03-11

    Applicant: Mitsubishi Electric Corp

    Inventor： MIYAKE MAKOTO

    IPC: H04L25/02 ,  H04L1/24

    CPC classification number: H04L1/241

    Abstract: PURPOSE:To detect errors with a high precision without the influence due to the waveform distortion of a clock signal supplied from a receiver by adding a clock reproducing function to a false error detector. CONSTITUTION:The signal supplied from the receiver to this false error detector is only a base band signal before demodulation. An extractor 12, a tank 13, and a limiter 14 reproduces a clock signal from the base band signal inputted to a terminal 6. This reproduced clock signal is supplied to the first and the second samplers 9a and 9b through the first and the second phase shifters 10a and 10b. The second phase shifter 10b shifts slightly the phase of the clock signal supplied to the second sampler 9b, and the second sampler 9b samples the base band signal at a time elapsed by DELTAT from the Nyquist point. The output of the second sampler 9b is the reproduced data having the degraded quality and the error rate of this output signal is called a false error rate, and the false error pulse is outputted to an output terminal 8 in accordance with a receiving signal.

    Abstract translation: 目的：通过向错误检测器添加时钟再生功能，以高精度检测误差，不受由接收机提供的时钟信号波形失真的影响。 构成：从接收机提供给该误差检测器的信号只是解调前的基带信号。 提取器12，箱13和限制器14从输入到端子6的基带信号再现时钟信号。该再生时钟信号通过第一和第二阶段被提供给第一和第二采样器9a和9b 移位器10a和10b。 第二移相器10b稍微移动提供给第二采样器9b的时钟信号的相位，并且第二采样器9b从奈奎斯特点经DELTAT经过的时间采样基带信号。 第二采样器9b的输出是具有劣化质量的再现数据，并且该输出信号的误码率被称为误差率，并且根据接收信号将错误错误脉冲输出到输出端子8。

    가변또는고정데이터속도에서디지탈통신채널의성능을측정하는방법및장치
    27.
    发明授权
    가변또는고정데이터속도에서디지탈통신채널의성능을측정하는방법및장치 失效

    公开(公告)号：KR100396363B1

    公开(公告)日：2003-11-28

    申请号：KR1019970703635

    申请日：1995-11-29

    Applicant: 퀄컴 인코포레이티드

    Inventor： 티에데만에드워드지.쥬니어 ,  조우유첸 ,  웨버린드세이에이쥬니어 ,  베이레이과인

    IPC: H04L1/24

    CPC classification number: H04L1/20 ,  H04L1/241 ,  H04L1/242 ,  H04L2027/0034

    Abstract: The invention provides a system and method for testing signal transmission quality within a digital communication system and may be incorporated within a digital cellular communication system in which information is exchanged over spread spectrum communication channels. A test sequence of digital data transmitted over the communication channel is received at a receiving station, within which is also generated a replica of the test sequence of digital data. The accuracy of transmission over the communication channel is then determined by comparing the replica of the test sequence of digital data to the test sequence of data received over the communication channel. The invention allows the test sequence of digital data to be transmitted at one of a set of known data rates, with the received station being disposed to identify the data rate associated with each test sequence of digital data. In order to simulate the transmission of, for example, voice data, the system may be configured such that each test sequence of digital data is generated in accordance with a pseudorandom process.

    Abstract translation: 本发明提供了一种用于测试数字通信系统内的信号传输质量的系统和方法，并且可以被结合在数字蜂窝通信系统内，其中信息在扩频通信信道上进行交换。 通过通信信道传输的数字数据的测试序列在接收站处被接收，在该接收站内还产生数字数据的测试序列的复制品。 然后通过比较数字数据的测试序列的副本与通过通信信道接收的数据的测试序列来确定通信信道上的传输的准确性。 本发明允许以一组已知数据速率中的一个传输数字数据的测试序列，其中所接收的站被设置为识别与数字数据的每个测试序列相关联的数据速率。 为了模拟例如语音数据的传输，系统可以被配置为使得数字数据的每个测试序列根据伪随机过程来生成。

Patent Agency Ranking