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    Filter for telecommunications system
    2.
    发明公开
    Filter for telecommunications system 审中-公开
    过滤电信系统

    公开(公告)号：EP1100211A1

    公开(公告)日：2001-05-16

    申请号：EP99308919.2

    申请日：1999-11-09

    申请人： LUCENT TECHNOLOGIES INC.

    发明人： Kuzminskiy, Alexandr ,  Strauch, Paul Edward

    IPC分类号： H04B7/005 ,  H04L1/06 ,  H04L25/03

    CPC分类号： H04L1/06 ,  H04B7/005 ,  H04L25/03012

    摘要： In a radio telecommunications system such as GSM or EDGE, at each timeslot 10 a small number of information symbols in narrow bands (24, 26) of the data payloads (20,22) adjacent each tail (16, 18) of the timeslot are used as training-like symbols; for each burst, the end of the timeslot more affected by asynchronous CCI is sensed, and the training-like symbols at that end are processed, together with conventional midamble (14) training symbols and tails symbols (16,18), by a CCI rejection algorithm.

    摘要翻译： 在诸如GSM或EDGE的无线电电信系统中，在每个时隙10处，与时隙的每个尾部（16,18）相邻的数据有效载荷（20,22）的窄带（24,26）中的少量信息符号是 用作训练样符号; 对于每个突发，检测到更多受异步CCI影响的时隙的结束，并且通过CCI与传统的中间码（14）训练符号和尾部符号（16,18）一起处理在该端的训练样符号 拒绝算法。

    Method and apparatus to determine the speed of mobile communications apparatus
    6.
    发明公开
    Method and apparatus to determine the speed of mobile communications apparatus 有权
    用于确定在蜂窝通信系统中的移动站的速度的方法

    公开(公告)号：EP1052820A1

    公开(公告)日：2000-11-15

    申请号：EP99303620.1

    申请日：1999-05-10

    申请人： LUCENT TECHNOLOGIES INC.

    发明人： Flewitt, Adrian Robert ,  Luschi, Carlo ,  Rumi, Emal Daham ,  Sandell, Magnus ,  Strauch, Paul Edward ,  Yan, Ran

    IPC分类号： H04L27/233

    CPC分类号： H04L25/0228 ,  H04L25/0212 ,  H04L2027/0065

    摘要： A method for determining the speed of a mobile user, comprising deriving first signals related to the phase variations of a number of taps of an equivalent channel input response at the input of a channel equalizer in a base station receiver which receives the signal,

    deriving second signals related to the carrier frequency offset of the signal received in the base station receiver;
    subtracting the second signals from the first signals;
    and deriving from the difference a quantity related to the Doppler frequency shift of the received signals, and therefore to the speed of the mobile.

    摘要翻译： 一种用于确定性采矿移动用户的速度，包括：导出相关的一些在一个基站接收机，其接收信号的信道均衡器的输入端的等效信道输入响应的抽头的相位变化的第一信号，导出第二方法 相关的载波频率在基站接收器接收的信号的偏移信号; 减去从所述第一信号的第二信号; 和从差导出与所接收的信号的多普勒频移量，因此，对移动的速度。

    Iterative decoding on demand
    7.
    发明公开
    Iterative decoding on demand 失效
    Iteratives Dekodieren auf Anfrage

    公开(公告)号：EP0932259A1

    公开(公告)日：1999-07-28

    申请号：EP98300556.2

    申请日：1998-01-27

    申请人： LUCENT TECHNOLOGIES INC.

    发明人： Luschi, Carlo ,  Mujtaba, Syed Aon ,  ten Brink, Stephan ,  Sandell, Magnus ,  Yan, Ran-Hong ,  Strauch, Paul Edward

    IPC分类号： H03M13/00

    CPC分类号： H03M13/2948 ,  H03M13/29

    摘要： Apparatus and method for iteratively decoding a signal are provided. The apparatus includes a central pool of resources for iteratively decoding signals. The central pool may run a plurality of iterative decoding processes, each process being allocated to a signal processing unit upon request and depending upon resource availability.

    摘要翻译： 提供了用于迭代解码信号的装置和方法。 该装置包括用于迭代地解码信号的中央资源池。 中央池可以运行多个迭代解码过程，每个处理根据请求分配给信号处理单元，并且取决于资源可用性。

    Radio communications systems
    9.
    发明公开
    Radio communications systems 有权
    Funkkommunikationssystem

    公开(公告)号：EP1152549A1

    公开(公告)日：2001-11-07

    申请号：EP00303807.2

    申请日：2000-05-05

    申请人： LUCENT TECHNOLOGIES INC.

    发明人： Luschi, Carlo ,  Kuzminskiy, Alexandr ,  Strauch, Paul Edward ,  Yan, Ran-Hong

    IPC分类号： H04B7/005

    CPC分类号： H04L1/20 ,  H04B7/005 ,  H04L1/06 ,  H04L2025/03566 ,  H04L2025/03726

    摘要： A mobile telephone system includes a base station which establishes a link with a selected mobile station. The received signal from the mobile station will include a noise component as well as a possible interference component from another mobile station operating at the same frequency in another cell.
    The base station has a trellis based equalisation system which operates on the assumption that the received signal includes components which have a predominantly Gaussian characteristic. A switch controller determines when the interference component (which is non-gaussian) in the received signal becomes a dominant component and operates to switch a spatio-temporal filter into the circuit instead of the trellis based equalisation system, to improve the bit error rate performance.

    摘要翻译： 移动电话系统包括与所选择的移动站建立链接的基站。 来自移动台的接收信号将包括噪声分量以及来自在另一小区中以相同频率工作的另一移动站的可能干扰分量。 基站具有基于网格的均衡系统，其基于接收信号包括具有主要高斯特性的分量来运行。 开关控制器确定接收信号中的干扰分量（其是非高斯）何时成为主要分量并且操作以将空间 - 时间滤波器切换到电路而不是基于网格的均衡系统，以提高误码率性能 。

    Channel estimation using soft-decision feedback
    10.
    发明公开
    Channel estimation using soft-decision feedback 有权
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    公开(公告)号：EP0954144A1

    公开(公告)日：1999-11-03

    申请号：EP99303283.8

    申请日：1999-04-27

    申请人： LUCENT TECHNOLOGIES INC.

    发明人： Luschi, Carlo ,  Sandell, Magnus ,  Mujtaba, Syed Aon ,  Strauch, Paul Edward ,  ten Brink, Stephan, Dipl.-Ing. ,  Yan, Ran-Hong

    IPC分类号： H04L25/02

    CPC分类号： H04L25/02 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/067

    摘要： A method of estimating channel impulse response in a signal transmitted over a channel in a communication system is described. The channel estimator obtains a priori knowledge about the transmitted signal and then use the transmitted signal and the a priori knowledge to choose an estimate of channel impulse response which minimises the expected distance between the transmitted signal and a reconstructed signal. The expected distance that is minimised is a cost function, represented by E{∥ r - B h∥ 2 | r }. By using soft decision feedback, the invention minimises erroneous decision feedback which can cause error propagation. The decision are usually in the form of log likelihood ratios (LLR).

    摘要翻译： 描述了在通信系统中通过信道发送的信号中估计信道脉冲响应的方法。 信道估计器获得关于发射信号的先验知识，然后使用发射信号和先验知识来选择信道脉冲响应的估计，其使发射信号和重建信号之间的预期距离最小化。 最小化的预期距离是一个成本函数，由EäPARALLEL r - Bh PARALLEL <2> |rü表示。 通过使用软判决反馈，本发明使可能导致错误传播的错误判定反馈最小化。 决策通常采用对数似然比（LLR）的形式。