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    Filter for telecommunications system
    1.
    发明授权
    Filter for telecommunications system 失效
    过滤电讯系统

    公开(公告)号：US06697351B1

    公开(公告)日：2004-02-24

    申请号：US09704484

    申请日：2000-11-02

    申请人： Alexandr Kuzminskiy ,  Paul Edward Strauch

    发明人： Alexandr Kuzminskiy ,  Paul Edward Strauch

    IPC分类号： H04J300

    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 a small number of information symbols in narrow bands of the data payloads adjacent each tail 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 training symbols and tails symbols, by a CCI rejection algorithm.

    摘要翻译： 在诸如GSM或EDGE的无线电电信系统中，在每个时隙处，与时隙的每个尾部相邻的数据有效载荷的窄带中的少量信息符号用作训练样符号; 对于每个突发，感测到更多受异步CCI影响的时隙的结束，并且通过CCI拒绝算法将该端处的训练样符号与传统的中继训练符号和尾符号进行一起处理。

    Radio communication systems
    2.
    发明授权
    Radio communication systems 有权
    无线电通信系统

    公开(公告)号：US06668030B2

    公开(公告)日：2003-12-23

    申请号：US09848504

    申请日：2001-05-03

    申请人： Alexandr Kuzminskiy ,  Carlo Luschi ,  Paul Edward Strauch ,  Ran-Hong Yan

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

    IPC分类号： H04B110

    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 equalization 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 equalization 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时空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
    3.
    发明授权
    Channel estimation using soft-decision feedback 有权
    使用软判决反馈的信道估计

    公开(公告)号：US06539067B1

    公开(公告)日：2003-03-25

    申请号：US09300495

    申请日：1999-04-28

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

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

    IPC分类号： H04L2706

    CPC分类号： H04L25/0202

    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 uses the transmitted signal and the a priori knowledge to choose an estimate of channel impulse response which minimizes the expected distance between the transmitted signal and a reconstructed signal. The expected distance that is minimized is a cost function, represented by E{∥r−Bh∥2r}. By using soft decision feedback, the invention minimizes erroneous decision feedback which can cause error propagation. The decisions 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，其使发射信号和重构信号之间的预期距离最小化。 最小化的预期距离是由E {‖r-Bh‖2r}表示的成本函数。 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。 决策通常是对数似然比（LLR）的形式。