Optimised bit loading for VDSL
    1.
    发明公开
    Optimised bit loading for VDSL 有权
    Optimierte DatenzuweisungfürVDSL

    公开(公告)号:EP1328099A1

    公开(公告)日:2003-07-16

    申请号:EP02360001.8

    申请日:2002-01-07

    申请人: ALCATEL

    IPC分类号: H04L27/26

    CPC分类号: H04L5/0046 H04L5/006

    摘要: A method for providing bit loading computation in a multi-carrier communication system, the method comprising measuring the signal to noise ratios (SNRs) for carriers and determining in dependence of the SNR a related number of bits to be loaded (=allocated) to the respective carrier, is characterised in that it comprises the steps of:

    a) providing a sliding window,
    b) moving the sliding window over the frequency spectrum of the carriers,
    c) for each position of the window determining bit allocation for the newly introduced carrier(s),
    d) in the event that a predetermined average power spectrum density threshold (TPSD) of the carriers over the window is exceeded, selecting at least one carrier within the window for power spectrum density reduction at the expense of at least one bit.

    摘要翻译: 一种用于在多载波通信系统中提供比特加载计算的方法,所述方法包括测量载波的信噪比(SNR),并根据SNR确定要加载(=分配)的相关位数 相应的载波的特征在于它包括以下步骤:a)提供滑动窗口,b)使滑动窗口在载波的频谱上移动,c)对于新引入的载波的窗口确定位分配的每个位置 d)在超过窗口上的载波的预定平均功率谱密度阈值(TPSD)超过的情况下,选择窗口内的至少一个载波以降低功率谱密度,其代价是至少一位 。