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    • 10. 发明申请
    • NOISE ESTIMATION FILTER
    • 噪声估计滤波器
    • US20130003802A1
    • 2013-01-03
    • US13174327
    • 2011-06-30
    • Ayelet DoronVladimir KravtsovYuval Lomnitz
    • Ayelet DoronVladimir KravtsovYuval Lomnitz
    • H04L27/28H04B17/00
    • H04B17/345H04L25/0242H04L25/0248
    • A noise estimation filter for an orthogonal frequency-division multiplexed (OFDM) system can include a filter bank module, a coefficient squaring module, and a summing module. The filter bank module can multiply a unitary vector by an OFDM signal vector to generate scalar products of the OFDM signal vector. The coefficient squaring module can square the scalar products and weight the scalar products to generate a plurality of weighted single estimates. The coefficient squaring module can include a squaring module for squaring the scalar product to generate a plurality of single estimates and a coefficient multiplication module for weighting each of the single estimates with a noise coefficient forming a plurality of weighted single estimates. The summing module can sum the weighted single estimates to generate a noise and interference power estimate.
    • 用于正交频分复用(OFDM)系统的噪声估计滤波器可以包括滤波器组模块,系数平方模块和求和模块。 滤波器组模块可以通过OFDM信号向量乘以单一矢量,以产生OFDM信号矢量的标量积。 系数平方模块可以对标量积进行平方并加权标量积以产生多个加权单个估计。 系数平方模块可以包括用于平方标量积以产生多个单个估计的平方模块和用于对形成多个加权单个估计值的噪声系数对每个单个估计进行加权的系数乘法模块。 求和模块可以对加权的单个估计进行求和以产生噪声和干扰功率估计。