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52 条记录 (耗时 0.029 秒)

    Transmission system
    1.
    发明授权
    Transmission system 失效
    传输系统

    公开(公告)号：US5617454A

    公开(公告)日：1997-04-01

    申请号：US503076

    申请日：1995-07-14

    申请人： Hans-Joachim Gotz ,  Markus Brachmann ,  Georg Frank ,  Thomas Eckart

    发明人： Hans-Joachim Gotz ,  Markus Brachmann ,  Georg Frank ,  Thomas Eckart

    IPC分类号： H03K3/03 ,  H03L7/06 ,  H03L7/099 ,  H04J3/07 ,  H03D3/24

    CPC分类号： H04J3/076 ,  H03L7/0995 ,  H03L7/0997

    摘要： The invention relates to a transmission system comprising a phase-locked loop (12) which includes a phase comparator (15) for comparing an oscillator signal with a reference signal and for generating a comparison signal, and an oscillator which is provided for receiving a control signal derived from the comparison signal. The oscillator arranged as a ring oscillator (14) comprises at least one delay element (27 to 31) included in a closed circuit. At least one delay element (27 to 30) has at least two different adjustable delay times. A controller (19) is provided for setting the delay times of at least one delay element (27 to 30) in dependence on the comparison signal.

    摘要翻译： 本发明涉及一种包括锁相环（12）的传输系统，该锁相环（12）包括用于将振荡器信号与参考信号进行比较并用于产生比较信号的相位比较器（15），以及用于接收控制 来自比较信号的信号。 设置为环形振荡器（14）的振荡器包括包含在闭合电路中的至少一个延迟元件（27至31）。 至少一个延迟元件（27至30）具有至少两个不同的可调延迟时间。 提供控制器（19），用于根据比较信号设置至少一个延迟元件（27至30）的延迟时间。

    Frequency correction for a multicarrier system
    3.
    发明授权
    Frequency correction for a multicarrier system 有权
    多载波系统的频率校正

    公开(公告)号：US07324599B2

    公开(公告)日：2008-01-29

    申请号：US10751120

    申请日：2004-01-05

    申请人： Georg Frank ,  Mathias Pauli ,  Udo Wachsmann ,  Peter Schramm

    发明人： Georg Frank ,  Mathias Pauli ,  Udo Wachsmann ,  Peter Schramm

    IPC分类号： H04K1/10

    CPC分类号： H04L27/2657 ,  H04L27/2679

    摘要： In order to correct frequency deviations of signals in a multicarrier system, such as a OFDM-system, the present invention provides a frequency tracker and a method to operate the same. The frequency tracker is based on a decision directed digital phase locked loop exhibiting a predictive character. On the basis of an estimated phase offset for a received signal (signal component, signal symbol) a predicted phase offset is calculated and applied to the signal (signal component, signal symbol). Further, received signals (signal components, signal symbols) are sampled and for each sample a sample phase offset to be corrected is calculated in dependence to the related estimated phase offset to incorporate the predictive character. In particular, the predicted sample phase offsets are calculated as a function of a corresponding predicted phase offset and a measure being indicative of a distance, in the time domain, between a corresponding phase reference point for the predicted phase offset and a phase reference point defined for a specific part of the received signal, preferably for a preceding preamble signal.

    摘要翻译： 为了校正诸如OFDM系统的多载波系统中的信号的频率偏差，本发明提供一种频率跟踪器及其操作方法。 频率跟踪器基于呈现预测字符的决策指向的数字锁相环。 基于接收信号（信号分量，信号符号）的估计相位偏移，计算预测相位偏移并将其施加到信号（信号分量，信号符号）。 此外，接收到的信号（信号分量，信号符号）被采样，并且对于每个采样，根据相关的估计相位偏移来计算要校正的采样相位偏移以并入预测字符。 特别地，预测的采样相位偏移作为相应的预测相位偏移的函数计算，并且指示在时域中在预测相位偏移的相应相位参考点和定义的相位参考点之间的距离的度量 对于接收信号的特定部分，优选地用于前一个前导信号。

    Method and apparatus for estimating a frequency offset
    4.
    发明授权
    Method and apparatus for estimating a frequency offset 失效
    用于估计频率偏移的方法和装置

    公开(公告)号：US6104767A

    公开(公告)日：2000-08-15

    申请号：US971666

    申请日：1997-11-17

    申请人： Roozbeh Atarius ,  Georg Frank

    发明人： Roozbeh Atarius ,  Georg Frank

    IPC分类号： H03J7/02 ,  H04B17/00 ,  H04L27/00 ,  H04L27/14 ,  H04L27/06

    CPC分类号： H03J7/02 ,  H04L2027/0065

    摘要： In a communication system including at least one transmitter and at least one receiver, a frequency offset between a carrier frequency of the transmitter and a local frequency reference of the receiver is estimated. A phase difference is computed between successively collected samples of a frequency synchronization signal transmitted by the transmitter and detected by the receiver. The phase difference is added to accumulated phase differences. Phase differences of successively collected samples are computed and added to accumulated phase differences until M accumulated phase differences have been added. The sum of the M phase differences is dumped, resulting in zero accumulated phase differences. Phase differences of successively collected samples are computed, the phase differences are added to accumulated phase differences, and the sum of M phase differences is dumped until N sums of M phase differences have been dumped. The N sums of the M phase differences are added to produce the estimated frequency offset.

    摘要翻译： 在包括至少一个发射机和至少一个接收机的通信系统中，估计发射机的载波频率和接收机的本地频率参考之间的频率偏移。 在由发射机发射并由接收机检测的频率同步信号的连续收集的采样之间计算相位差。 相位差加到累加的相位差上。 计算连续收集的样本的相位差，并将其相加到累积相位差，直到添加了M个累积相位差。 M相差的总和被转储，导致零累积相位差。 计算连续收集的样本的相位差，将相位差加到累积相位差上，并将M相差的和倾倒，直到M个相位差的N个和已经被转储。 将M个相位差的N个和相加以产生估计的频率偏移。

    Mixtures of liquid-crystal polymers and polyarylene sulfoxides, foams made of such mixtures, process for their producing the same and their use
    5.
    发明授权
    Mixtures of liquid-crystal polymers and polyarylene sulfoxides, foams made of such mixtures, process for their producing the same and their use 失效
    液晶聚合物和聚亚芳基亚砜的混合物，由这些混合物制成的泡沫，其制备方法及其用途

    公开(公告)号：US5948830A

    公开(公告)日：1999-09-07

    申请号：US793216

    申请日：1997-05-02

    申请人： Helmut Scheckenbach ,  Dirk Raudies ,  Andreas Schleicher ,  Georg Frank

    发明人： Helmut Scheckenbach ,  Dirk Raudies ,  Andreas Schleicher ,  Georg Frank

    IPC分类号： C08J9/02 ,  C08L67/00 ,  C08L67/03 ,  C08L67/04 ,  C08L77/12 ,  C08L81/00 ,  C08J9/04

    CPC分类号： C08L77/12 ,  C08L67/00 ,  C08L67/04 ,  C08L81/00

    摘要： The novel blend comprises:(A) from 1 to 99% by weight of at least one thermotropic-liquid-crystalline polyester and/or polyesteramide and(B) from 1 to 99% by weight of at least one sulfoxide group-containing polymer,in each case based on the total weight .SIGMA.�(A)+(B)!. Component (B) is a linear and/or branched polymer having a mean molecular weight M.sub.w in the range from 4,000 to 200,000 comprising recurring units of the formula �--F--S).sub.c --(F--SO).sub.d --!, where F, independently of one another, are simple or para-, meta- or ortho-linked arylene systems having 6 to 18 carbon atoms, preferably phenylene, naphthylene or biphenylene, where the sum c+d is 1, with the proviso that d is always .gtoreq.0.70. Component (A) is a thermotropic liquid-crystalline polymer having a mean molecular weight M.sub.w in the range from 10,000 to 200,000 g/mol and a transition temperature of >250.degree. C., and/or an amorphous thermotropic liquid-crystalline polymer having a mean molecular weight M.sub.w of from 10,000 to 200,000 g/mol and a glass transition temperature of >160.degree. C.

    摘要翻译： PCT No.PCT / EP95 / 03082 Sec。 371日期：1997年5月2日 102（e）日期1997年5月2日PCT提交1995年8月2日PCT公布。 公开号WO96 / 05252 日期1996年2月22日该新型共混物包含：（A）1至99重量％的至少一种热致液晶聚酯和/或聚酯酰胺和（B）1至99重量％的至少一种亚砜 基于含有基团的聚合物，在每种情况下基于总重量SIGMA [（A）+（B）]。 组分（B）是具有4,000至200,000范围内的平均分子量Mw的线性和/或支化聚合物，其包含式[-FS] c-（F-SO）d - ]的重复单元，其中F独立地 是具有6至18个碳原子的简单或对位，间位或邻位的亚芳基系，优选亚苯基，亚萘基或亚联苯，其中总和c + d为1，条件是d总是> = 0.70。 组分（A）是平均分子量Mw在10,000至200,000g / mol，转变温度> 250℃的热致液晶聚合物，和/或具有 平均分子量Mw为10,000至200,000g / mol，玻璃化转变温度> 160℃。

    Mobile radio receiver for a radio transmission system
    8.
    发明授权
    Mobile radio receiver for a radio transmission system 失效
    用于无线电传输系统的移动无线电接收机

    公开(公告)号：US5416800A

    公开(公告)日：1995-05-16

    申请号：US986328

    申请日：1992-12-07

    申请人： Georg Frank

    发明人： Georg Frank

    IPC分类号： H04Q7/38 ,  G01R23/12 ,  H04L27/00 ,  H04L27/233 ,  H03K7/04 ,  H03K9/04

    CPC分类号： H04L27/2332 ,  H04L2027/0028 ,  H04L2027/0055

    摘要： A mobile radio receiver for a digital radio transmission system includes a recognition arrangement (6) for searching a received digital signal for pulses (i) of a frequency correction burst which recurs with a predetermined frequency in the digital signal and for determining the pulse positions (t). A frequency estimation arrangement (7) derives estimates of the predetermined frequency. In order to improve the initial synchronization of the mobile radio receiver with a base station, the recognition arrangement includes an averaging circuit (14) which averages with weight factors (Us) the pulse positions (t) that have been determined in successive observation intervals, the weight factors (Us) being proportional to the individual pulse heights (U). The reliability of recognition of pulses which belong a frequency correction burst is improved by providing evaluation based on the number of pulses of amplitudes above a selected threshold level during a selected interval, and further evaluation based on a phase error quality of the frequency estimates of the predetermined frequency.

    摘要翻译： 一种用于数字无线电传输系统的移动无线电接收机包括一个用于搜索接收的数字信号的识别装置（6），用于在数字信号中以预定频率重现并用于确定脉冲位置的频率校正突发脉冲（i） t）。 频率估计装置（7）导出预定频率的估计。 为了改善移动无线电接收机与基站的初始同步，识别装置包括平均电路（14），该平均电路平均化具有在连续的观察间隔中确定的脉冲位置（t）的权重因子（Us） 权重因子（Us）与单个脉冲高度（U）成比例。 通过基于在所选间隔期间选定的阈值电平以上的幅度的脉冲数进行评估来提高属于频率校正脉冲串的脉冲的识别的可靠性，以及基于频率估计的频率估计的相位误差质量的进一步评估 预定频率。

    Requesting and controlling access in a wireless communications network
    9.
    发明授权
    Requesting and controlling access in a wireless communications network 有权
    在无线通信网络中请求和控制访问

    公开(公告)号：US07706824B2

    公开(公告)日：2010-04-27

    申请号：US10526520

    申请日：2002-09-27

    申请人： Matthias Schulist ,  Georg Frank ,  Hans Schotten

    发明人： Matthias Schulist ,  Georg Frank ,  Hans Schotten

    IPC分类号： H04B7/00

    CPC分类号： H04W52/50 ,  H04W36/16 ,  H04W52/228 ,  H04W52/36 ,  H04W74/008 ,  H04W74/0833

    摘要： A method, a computer program product and a device for requesting access to a node (BS) of a wireless communications network (10) are described. In the network (10) identification codes are used to differentiate access requests of different network components (UE). The method comprises the step of determining information about a transmission path (12) to e.g. the network node (BS), the step of determining an identification code in dependence on the determined transmission path information, wherein previously an association between identification codes and transmission path information has been established, and the step of modulating the selected identification code onto a signal to generate an access request signal carrying transmission path information.

    摘要翻译： 描述了一种用于请求访问无线通信网络（10）的节点（BS）的方法，计算机程序产品和设备。 在网络（10）中，识别码用于区分不同网络组件（UE）的接入请求。 该方法包括以下步骤：确定关于传输路径（12）的信息。 所述网络节点（BS）根据确定的传输路径信息确定识别码的步骤，其中先前已经建立了识别码与传输路径信息之间的关联，以及将所选择的识别码调制到信号上的步骤 以产生携带传输路径信息的接入请求信号。