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    System and method for measuring channel quality in a communication system
    1.
    发明公开
    System and method for measuring channel quality in a communication system 审中-公开
    系统和Verfahren zurKanalqualitätsmessung在einem Kommunikationssystem

    公开(公告)号：EP0944201A2

    公开(公告)日：1999-09-22

    申请号：EP99301794.6

    申请日：1999-03-09

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Balachandran, Krishna ,  Kadaba, Srinivas R. ,  Nanda, Sanjiv ,  Ejzak, Richard P.

    IPC: H04L1/20

    CPC classification number: H04L1/0015 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0054 ,  H04L1/006 ,  H04L1/12 ,  H04L1/20 ,  H04W36/30 ,  H04W72/08

    Abstract: A system and method to measure channel quality in terms of signal to interference plus noise ratio for the transmission of coded signals over fading channels in a communication system. A Viterbi decoder metric for the Maximum Likelihood path is used as a channel quality measure for coherent and non-coherent transmission schemes. This Euclidean distance metric is filtered in order to smooth out short term variations. The filtered or averaged metric is a reliable channel quality measure which remains consistent across different coded modulation schemes speeds. The filtered metric is mapped to the signal to interference plus noise ratio per symbol using a threshold based scheme. Use of this implicit signal to interference plus noise ratio estimate is used for the mobile assisted hand off in a cellular system, power control and data rate adaptation in the transmitter.

    Abstract translation: 一种用于在通信系统中通过衰落信道传输编码信号的信噪比加噪声比测量信道质量的系统和方法。 用于最大似然路径的维特比解码器度量用作相干和非相干传输方案的信道质量测量。 过滤欧几里得距离度量以平滑短期变化。 滤波或平均的度量是可靠的信道质量度量，其在不同的编码调制方案速度下保持一致。 使用基于阈值的方案将经滤波的度量映射到每个符号的信号与干扰加噪声比。 使用这种隐含信号对干扰加噪声比估计用于蜂窝系统中的移动辅助切换，发射机中的功率控制和数据速率适配。

    Control component removing encoded frames from isochronous telecommunication stream
    6.
    发明公开
    Control component removing encoded frames from isochronous telecommunication stream 有权
    用于从编码同步电信流中去除帧的控制单元

    公开(公告)号：EP1475929A1

    公开(公告)日：2004-11-10

    申请号：EP04252419.9

    申请日：2004-04-26

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Ejzak, Richard P. ,  McCann, Peter J. ,  Turner, Michael D.

    IPC: H04L12/64

    CPC classification number: H04L12/40052 ,  H04L12/6418 ,  H04L2012/6481 ,  H04L2012/6494

    Abstract: An isochronous telecommunication stream comprises a plurality of frames encoded by a variable rate isochronous coder-decoder (codec) at a plurality of code rates of multiple available code rates. A control component removes one or more encoded frames from the plurality of frames of the isochronous telecommunication stream based on one or more code rates of the one or more encoded frames to create a non-isochronous telecommunication stream.

    Abstract translation: 的等时通信流包括通过在多个可用的码速率的编码率的多个可变速率的同步编码器 - 解码器（编解码器）编码的帧的复数。 控制部件从删除基于所述一个或多个经编码帧的一个或多个码速率同步电信流的帧的多个一种或多种编码帧以创建非等时通信流。

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