公开(公告)号：US07616710B2

公开(公告)日：2009-11-10

申请号：US11297257

申请日：2005-12-07

申请人： Pan-Soo Kim ,  Yun-Jeoug Song ,  Byoung-Hak Kim ,  Deock-Gil Oh ,  Ho-Jin Lee

发明人： Pan-Soo Kim ,  Yun-Jeoug Song ,  Byoung-Hak Kim ,  Deock-Gil Oh ,  Ho-Jin Lee

IPC分类号： H04L27/14

CPC分类号： H04L27/0014 ,  H04L2027/003 ,  H04L2027/0046 ,  H04L2027/0065

摘要： Provided is a method for estimating carrier wave or doppler frequency offset based on an approximated quadratic non-linear function in fine search, and a receiver employing the method. The method for estimating frequency offset includes the steps of: a) extracting more than three discrete samples in an order where the discrete samples are close to a maximum value of a power spectrum density function; b) inducing a quadratic non-linear function by using the extracted discrete samples; and c) estimating the frequency offset from a maximum point of the quadratic non-linear function. The technology of the present research makes it possible to exactly estimate frequency offset without increasing hardware complexity in estimation of carrier wave or doppler frequency offset.

摘要翻译： 提供了一种基于精细搜索中的近似二次非线性函数来估计载波或多普勒频率偏移的方法，以及采用该方法的接收机。 用于估计频率偏移的方法包括以下步骤：a）以离散样本接近功率谱密度函数的最大值的顺序提取三个以上的离散样本; b）通过使用提取的离散样本来诱导二次非线性函数; 以及c）从二次非线性函数的最大点估计频率偏移。 本研究的技术使得可以精确估计频偏，而不增加载波或多普勒频偏估计中的硬件复杂度。