公开(公告)号：US20080273585A1

公开(公告)日：2008-11-06

申请号：US12094851

申请日：2006-09-11

申请人： Pan-Soo Kim ,  Byoung-Hak Kim ,  Yun-Jeong Song ,  Deock-Gil Oh ,  Ho-Jin Lee ,  Jun Heo ,  Joong-Gon Ryoo

发明人： Pan-Soo Kim ,  Byoung-Hak Kim ,  Yun-Jeong Song ,  Deock-Gil Oh ,  Ho-Jin Lee ,  Jun Heo ,  Joong-Gon Ryoo

IPC分类号： H04B17/00 ,  H04L7/00

CPC分类号： H04L27/0014 ,  H04L2027/0057 ,  H04L2027/0067

摘要： Provided are an apparatus for estimating a phase error and a phase error correcting system using the phase error estimating apparatus. The apparatus includes: a probability value estimating unit for estimating a negative log probability value for each transmission symbol by transforming a soft output information transferred from the outside to a log A posterior probability ratio (LAPPR) value; an APP value calculating unit for calculating a posterior probability (APP) value by applying a negative exponential function to the transmission symbol; an average value deciding unit for deciding an average value for each transmission symbol using the probability information entirely, partially, or selectively according to a probability information type; and a symbol phase estimating unit for estimating a phase of a symbol based on the decided average value.

摘要翻译： 提供了一种使用相位误差估计装置估计相位误差的装置和相位误差校正系统。 该装置包括：概率值估计单元，用于通过将从外部传送的软输出信息变换为对数A后验概率比（LAPPR）值来估计每个发送符号的负对数概率值; APP值计算单元，用于通过对发送符号应用负指数函数来计算后验概率（APP）值; 平均值确定单元，用于根据概率信息类型完全，部分或选择地使用概率信息来确定每个传输符号的平均值; 以及符号相位估计单元，用于基于所确定的平均值来估计符号的相位。

公开(公告)号：US20080310560A1

公开(公告)日：2008-12-18

申请号：US12094717

申请日：2006-05-26

申请人： Pan-Soo Kim ,  Yun-Jeong Song ,  Byoung-Hak Kim ,  Deock-Gil Oh ,  Ho-Jin Lee ,  Jun Heo ,  Joong-Gon Ryoo

发明人： Pan-Soo Kim ,  Yun-Jeong Song ,  Byoung-Hak Kim ,  Deock-Gil Oh ,  Ho-Jin Lee ,  Jun Heo ,  Joong-Gon Ryoo

IPC分类号： H04L27/06

CPC分类号： H04L1/205 ,  H03M13/2957 ,  H03M13/296 ,  H04L1/005 ,  H04L1/0066 ,  H04L1/0071

摘要： Provided is an apparatus for estimating phase offsets of multiple survival paths and a satellite communication system using the same. The apparatus includes: upper/lower decoding units for obtaining a phase offset estimation value and estimating phase offsets of each survival path based on a stored parameter estimation value of a previous state inputted from an external device; an interleaving/de-interleaving unit for minimizing correlation between data used to estimate a parameter according to the estimated phase offset value from the upper/lower decoding means; and a phase offset outputting unit for outputting the phase offset value estimated through the upper decoding unit and the de-interleaving unit.

摘要翻译： 提供了一种用于估计多个存活路径的相位偏移的装置和使用其的卫星通信系统。 该装置包括：上/下解码单元，用于获得相位偏移估计值，并且基于从外部设备输入的先前状态的存储参数估计值来估计每个生存路径的相位偏移; 交织/解交织单元，用于根据来自上/下解码装置的估计相位偏移值，最小化用于估计参数的数据之间的相关性; 以及相位偏移输出单元，用于输出通过上部解码单元和解交织单元估计的相位偏移值。

公开(公告)号：US08045646B2

公开(公告)日：2011-10-25

申请号：US12094851

申请日：2006-09-11

申请人： Pan-Soo Kim ,  Byoung-Hak Kim ,  Yun-Jeong Song ,  Deock-Gil Oh ,  Ho-Jin Lee ,  Jun Heo ,  Joong-Gon Ryoo

发明人： Pan-Soo Kim ,  Byoung-Hak Kim ,  Yun-Jeong Song ,  Deock-Gil Oh ,  Ho-Jin Lee ,  Jun Heo ,  Joong-Gon Ryoo

IPC分类号： H03K9/00

CPC分类号： H04L27/0014 ,  H04L2027/0057 ,  H04L2027/0067

摘要： Provided are an apparatus for estimating a phase error and a phase error correcting system using the phase error estimating apparatus. The apparatus includes: a probability value estimating unit for estimating a negative log probability value for each transmission symbol by transforming a soft output information transferred from the outside to a log A posterior probability ratio (LAPPR) value; an APP value calculating unit for calculating a posterior probability (APP) value by applying a negative exponential function to the transmission symbol; an average value deciding unit for deciding an average value for each transmission symbol using the probability information entirely, partially, or selectively according to a probability information type; and a symbol phase estimating unit for estimating a phase of a symbol based on the decided average value.

摘要翻译： 提供了一种使用相位误差估计装置估计相位误差的装置和相位误差校正系统。 该装置包括：概率值估计单元，用于通过将从外部传送的软输出信息变换为对数A后验概率比（LAPPR）值来估计每个发送符号的负对数概率值; APP值计算单元，用于通过对发送符号应用负指数函数来计算后验概率（APP）值; 平均值确定单元，用于根据概率信息类型完全，部分或选择地使用概率信息来确定每个传输符号的平均值; 以及符号相位估计单元，用于基于所确定的平均值来估计符号的相位。

公开(公告)号：US20060146961A1

公开(公告)日：2006-07-06

申请号：US11297257

申请日：2005-12-07

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

发明人： Pan-Soo Kim ,  Yun-Jeong 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.

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。

公开(公告)号：US08649448B2

公开(公告)日：2014-02-11

申请号：US12962339

申请日：2010-12-07

申请人： Byoung-Hak Kim

发明人： Byoung-Hak Kim

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L27/2649 ,  H04L27/30

摘要： Disclosed herein is a demapping device and method for a Modified Dual Carrier Modulation (MDCM) system. The demapping device comprises: the received signal processing unit receives an MDCM signal preprocessed by an operation preparation unit, and calculates differences between squares of distances between the received signal and a plurality of constellation points; the index search unit searches for a constellation point closest to the received signal based on the differences between squares of distances between the received signal and each of a plurality of constellation points; and the demapping operation unit searches for constellation points close to the closest constellation point, and sends demapping result data to a decoding device. The demapping result is obtained by demapping based on differences between squares of distances between the closest constellation point and the close constellation points.

摘要翻译： 本文公开了一种用于修改双载波调制（MDCM）系统的解映射器件和方法。 解映射装置包括：接收信号处理单元接收由操作准备单元预处理的MDCM信号，并且计算接收信号与多个星座点之间的距离的平方之间的差; 基于接收信号与多个星座点中的每一个之间的距离的平方之间的差异，索引搜索单元搜索最接近接收信号的星座点; 并且解映射操作单元搜索靠近最近的星座点的星座点，并将解映射结果数据发送到解码设备。 基于最接近的星座点和近距星座点之间的距离的平方的差异，通过解映射获得解映射结果。

公开(公告)号：US08441916B2

公开(公告)日：2013-05-14

申请号：US12827252

申请日：2010-06-30

申请人： Cheol-Ho Shin ,  Sang-Sung Choi ,  Byoung-Hak Kim

发明人： Cheol-Ho Shin ,  Sang-Sung Choi ,  Byoung-Hak Kim

IPC分类号： H04J11/00

CPC分类号： H04L27/2607 ,  H04L25/0204 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2662

摘要： There are disclosed a method of communicating for a smart utility network using a TV white space and an apparatus for the same. The method of communicating for a smart utility network using a TV white space according to the present invention includes: generating a time domain sequence repeated every predetermined number of samples; generating an OFDM symbol having a cyclic prefix length corresponding to an FFT size divided by a natural number of 2 or more and including samples of a number corresponding to the sum of the FFT size and the cyclic prefix length; and generating an SUN packet to be transmitted through a TV channel band selected in the TV white space by using the time domain sequence and the OFDM symbol. Accordingly, it is possible to satisfy all requirements required by the IEEE 802.15.4g SUN standardization group.

摘要翻译： 公开了使用TV空白的智能公用事业网络的通信方法及其设备。 根据本发明的使用TV空白的智能公用网络的通信方法包括：产生每预定数量样本重复的时域序列; 生成具有对应于FFT大小除以2以上的自然数的循环前缀长度的OFDM符号，并且包括与FFT大小和循环前缀长度之和相对应的数字的采样; 以及通过使用时域序列和OFDM符号来生成通过TV空间中选择的TV频道频带发送的SUN分组。 因此，可以满足IEEE 802.15.4g SUN标准化组所要求的所有要求。