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    • 6. 发明授权
    • Phase noise tracking and reduction
    • 相位噪声跟踪和减少
    • US09491010B2
    • 2016-11-08
    • US14259862
    • 2014-04-23
    • Nokia Solutions and Networks Oy
    • Timothy ThomasMark Cudak
    • H04L25/03H04B17/00H04L27/00
    • H04L25/03305H04B17/0082H04B17/345H04L25/03006H04L25/03178H04L27/0014H04L27/22H04L2027/0016H04L2027/003H04L2027/0038H04L2027/0046H04L2027/0055H04L2027/0067H04L2027/0085H04W84/042
    • A group of data symbols for a current block of data symbols in multiple blocks received over a communication channel is equalized, based on a pilot block, to generate a group of equalized symbols. The group of equalized symbols is de-rotated as a function of a current phase estimate to determine initial de-rotated equalized symbols. The phase estimate is an estimate of phase caused by noise for blocks previous to the current block. Additionally, a phase metric is calculated from real and imaginary parts of the initial de-rotated equalized symbols, wherein the phase metric estimates phase caused by noise for the current block. The current phase estimate is updated with the phase metric. The initial de-rotated equalized symbols are de-rotated by the phase metric to determine final equalized and de-rotated symbol estimates. The final equalized and de-rotated symbol estimates are output. Apparatus, methods, and computer program products are disclosed.
    • 基于导频块,在通过通信信道接收的多个块中的当前数据符号块的一组数据符号被均衡,以生成一组均衡的符号。 作为当前相位估计的函数,均衡符号组被去旋转以确定初始去旋转均衡符号。 相位估计是对当前块之前的块的噪声引起的相位的估计。 另外,根据初始去旋转均衡符号的实部和虚部来计算相位量度,其中相位度量估计由当前块的噪声引起的相位。 当前相位估计用相位量度更新。 初始去旋转的均衡符号通过相位度量被去旋转以确定最终的均衡和去旋转符号估计。 输出最终均衡和去旋转的符号估计。 公开了装置,方法和计算机程序产品。