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31. 发明授权

US08103273B2 Cell search device of cellular system using OFDMA scheme and method thereof 有权
标题翻译：使用OFDMA方案的蜂窝系统的小区搜索设备及其方法
公开(公告)号：US08103273B2
公开(公告)日：2012-01-24
申请号：US11721153
申请日：2005-11-30
申请人： Chang-Wahn Yu , Youn-Ok Park
发明人： Chang-Wahn Yu , Youn-Ok Park
IPC分类号： H04W36/00
CPC分类号： H04J11/0069 , H04J13/0022
摘要： A cell search device using an appropriate preamble for a downlink of a cellular system using an orthogonal frequency division multiplexing access (OFDMA) scheme and a method thereof is disclosed. The cell search device for a terminal of a cellular system using an orthogonal frequency division multiplexing access scheme includes when the terminal receives a preamble symbol from a base station, a PN code and phase delay estimating unit for generating a code with the received preamble symbol and a combination of a PN code and a Walsh code, calculating a correlation value therebetween using a differential demodulation for the codes to detect the PN code, a plurality of Walsh codes, and an error of a time delay, and estimating a component of a phase delay for the time delay; and a Walsh code estimating unit for minimizing the influence of the time error using the phase delay and the PN code information obtained by the differential demodulation of the PN code and phase delay estimating unit and estimating a Walsh code for the corresponding cell by synchronization demodulation.
摘要翻译：公开了一种使用正交频分复用接入（OFDMA）方案的蜂窝系统的下行链路的适当前导码的小区搜索装置及其方法。用于使用正交频分复用接入方式的蜂窝系统的终端的小区搜索装置包括当终端从基站接收到前导码符号时，PN码和相位延迟估计单元用于产生具有接收到的前导码符号的码， PN码和沃尔什码的组合，使用用于检测PN码的代码的差分解调，多个沃尔什码和时间延迟的误差来计算其间的相关值，并且估计相位的分量延迟延迟; 以及沃尔什码估计单元，用于使用相位延迟和通过PN码和相位延迟估计单元的差分解调获得的PN码信息来最小化时间误差的影响，并通过同步解调估计相应小区的沃尔什码。

32. 发明授权

US07817707B2 Apparatus and method for generating ranging pseudo noise code 有权
标题翻译：用于产生测距伪噪声码的装置和方法
公开(公告)号：US07817707B2
公开(公告)日：2010-10-19
申请号：US11791055
申请日：2005-11-11
申请人： Kyung-Yeol Sohn , Chang-Wahn Yu , Youn-Ok Park
发明人： Kyung-Yeol Sohn , Chang-Wahn Yu , Youn-Ok Park
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04J13/10 , H04J13/0022
摘要： Disclosed is an apparatus for generating a ranging pseudo noise (PN) code used in a base station of a portable internet system of an orthogonal frequency division multiplexing access scheme, wherein a ranging pseudo noise mask value is generated using a cell ID number, and then the generated ranging pseudo noise mask value is stored in a memory. A final ranging PN code is generated using the stored ranging PN mask value and a status of a pseudo random binary sequence for generating a ranging PN code. With such a structure, the maximal 256-numbered ranging PN code values can be obtained simultaneously with each 144 bit-length.
摘要翻译：公开了一种用于生成在正交频分复用接入方案的便携式互联网系统的基站中使用的测距伪噪声（PN）码的装置，其中使用小区ID号生成测距伪噪声掩码值，然后生成的测距伪噪声掩码值被存储在存储器中。使用所存储的测距PN掩码值和用于生成测距PN码的伪随机二进制序列的状态来生成最终测距PN码。利用这种结构，可以同时获得每个144位长度的最大256个测距PN码值。

33. 发明授权

US07515641B2 Apparatus and method for processing ranging channel in orthogonal frequency division multiple access system 有权
标题翻译：在正交频分多址系统中处理测距信道的装置和方法
公开(公告)号：US07515641B2
公开(公告)日：2009-04-07
申请号：US10923136
申请日：2004-08-19
申请人： Chang-Wahn Yu , Kyung-Yeol Sohn , Youn-Ok Park , Seung-Ku Hwang
发明人： Chang-Wahn Yu , Kyung-Yeol Sohn , Youn-Ok Park , Seung-Ku Hwang
IPC分类号： H04K1/10
CPC分类号： H04L5/023
摘要： Disclosed is an apparatus and method for processing a ranging channel in an OFDMA system. The apparatus converts received ranging complex signals to polar coordinate signals having a signal magnitude and a phase, and the received converted signals are each represented by a signal magnitude component and a phase component. A predetermined phase component of a signal according to a phase rotation is used to estimate a time delay by an addition operation of the phase of the received signal and the phase according to the phase rotation. Accordingly, the time delay and the power of each reverse link user of the OFDMA mobile communication system can be calculated by arithmetic operations of addition components instead of multiplication components, resulting in the reduction of complexity.
摘要翻译：公开了一种在OFDMA系统中处理测距信道的装置和方法。该装置将接收到的测距复合信号转换为具有信号幅度和相位的极坐标信号，并且接收的转换信号各自由信号幅度分量和相位分量表示。根据相位旋转的信号的预定相位分量用于通过根据相位旋转的接收信号的相位和相位的相加运算来估计时间延迟。因此，可以通过加法分量的算术运算而不是乘法分量来计算OFDMA移动通信系统的每个反向链路用户的时延和功率，从而降低复杂度。

34. 发明授权

US07477190B2 Smart antenna beamforming device in communication system and method thereof 有权
标题翻译：通信系统中的智能天线波束成形装置及其方法
公开(公告)号：US07477190B2
公开(公告)日：2009-01-13
申请号：US11607270
申请日：2006-12-01
申请人： Young-Jo Bang , Young Ho Yun , Chang-Wahn Yu , Hyung Rae Park , Youn-Ok Park
发明人： Young-Jo Bang , Young Ho Yun , Chang-Wahn Yu , Hyung Rae Park , Youn-Ok Park
IPC分类号： H01Q3/00 , G01S7/36 , H04J1/00
CPC分类号： H04B7/086 , G01S3/74
摘要： A beamforming device includes a Direction Of Arrival (DOA) estimation unit for estimating DOAs of the received signals based on a data subcarrier matrix; a pre-spatial filtering unit for using the estimated DOA, performing a filtering operation for the data subcarrier matrix, and generating filtering matrixes; a signal identification unit for using a data sequence, identifying original and interference signals, and generating the DOAs of the original and interference signals; a spatial filtering unit for generating an interference-plus-noise covariance matrix by using the DOA of the interference signal, eliminating the interference signal by using the covariance matrix and the DOA of the original signal, and forming final beams for the original signal; and a channel estimating and signal combining unit for performing a maximal ratio combining operation so that the final beams are combined as one combined final beam.
摘要翻译：波束形成装置包括：基于数据子载波矩阵估计接收信号的DOA的到达方向估计单元; 用于使用所估计的DOA的预空间滤波单元，对所述数据子载波矩阵执行滤波操作，以及生成滤波矩阵; 信号识别单元，用于使用数据序列，识别原始和干扰信号，以及生成原始和干扰信号的DOA; 空间滤波单元，用于通过使用干扰信号的DOA产生干扰加噪声协方差矩阵，通过使用原始信号的协方差矩阵和DOA消除干扰信号，并且为原始信号形成最终的波束; 以及信道估计和信号组合单元，用于执行最大比组合操作，使得最终光束被组合为一个组合的最终光束。

35. 发明申请

US20100216459A1 CELL SEARCH DEVICE OF CELLULAR SYSTEM USING OFDMA SCHEME AND METHOD THEREOF 有权
标题翻译：使用OFDMA方案的细胞系统的细胞搜索装置及其方法
公开(公告)号：US20100216459A1
公开(公告)日：2010-08-26
申请号：US11721153
申请日：2005-11-30
申请人： Chang-Wahn Yu , Youn-Ok Park
发明人： Chang-Wahn Yu , Youn-Ok Park
IPC分类号： H04W36/00
CPC分类号： H04J11/0069 , H04J13/0022
摘要： A cell search device using an appropriate preamble for a downlink of a cellular system using an orthogonal frequency division multiplexing access (OFDMA) scheme and a method thereof is disclosed. The cell search device for a terminal of a cellular system using an orthogonal frequency division multiplexing access scheme includes when the terminal receives a preamble symbol from a base station, a PN code and phase delay estimating unit for generating a code with the received preamble symbol and a combination of a PN code and a Walsh code, calculating a correlation value therebetween using a differential demodulation for the codes to detect the PN code, a plurality of Walsh codes, and an error of a time delay, and estimating a component of a phase delay for the time delay; and a Walsh code estimating unit for minimizing the influence of the time error using the phase delay and the PN code information obtained by the differential demodulation of the PN code and phase delay estimating unit and estimating a Walsh code for the corresponding cell by synchronization demodulation.
摘要翻译：公开了一种使用正交频分复用接入（OFDMA）方案的蜂窝系统的下行链路的适当前导码的小区搜索装置及其方法。用于使用正交频分复用接入方式的蜂窝系统的终端的小区搜索装置包括当终端从基站接收到前导码符号时，PN码和相位延迟估计单元用于产生具有接收到的前导码符号的码， PN码和沃尔什码的组合，使用用于检测PN码的代码的差分解调，多个沃尔什码和时间延迟的误差来计算其间的相关值，并且估计相位的分量延迟延迟; 以及沃尔什码估计单元，用于使用相位延迟和通过PN码和相位延迟估计单元的差分解调获得的PN码信息来最小化时间误差的影响，并通过同步解调估计相应小区的沃尔什码。

36. 发明授权

US07782989B2 Apparatus and method for acquiring frame timing in communication system 有权
标题翻译：在通信系统中获取帧定时的装置和方法
公开(公告)号：US07782989B2
公开(公告)日：2010-08-24
申请号：US11636797
申请日：2006-12-11
申请人： Seung-Jae Bahng , Youn-Ok Park , Chang-Wahn Yu , Eon-Young Hong
发明人： Seung-Jae Bahng , Youn-Ok Park , Chang-Wahn Yu , Eon-Young Hong
IPC分类号： H04L7/00
CPC分类号： H04L27/2656 , H04L27/2676
摘要： Disclosed is an apparatus for acquiring initial frame timing in a communication system having a normalizer that calculates a normalized window power from powers of samples of received signal during a monitoring period, a cross power calculator that calculates a window cross power from cross powers of the samples during the monitoring period, and each cross power corresponds to multiplication of two of the samples, a divider that divides the window cross power by the normalized window power and outputs a metric for a sample corresponding to the monitoring period, and a peak-value detector that searches a sample having the maximum value among metrics for the samples of the received signals during a predetermined period, and the metrics are calculated by shifting the monitoring period, with a sample next to the sample searched by the peak-value detector being determined as a starting point of a frame.
摘要翻译：公开了一种用于在具有归一化器的通信系统中获取初始帧定时的装置，该归一化器根据监视期间的接收信号的采样功率计算归一化窗功率;交叉功率计算器，其从样本的交叉功率计算窗口交叉功率在监视期间，并且每个交叉功率对应于两个样本的乘法，分频器将窗口交叉功率除以归一化窗功率，并输出对应于监视周期的样本的度量，以及峰值检测器在预定时间段内搜索具有接收信号样本的度量中的最大值的样本，并且通过将监测周期移位，通过峰值检测器搜索的样本旁边的样本被确定为一个框架的起点。

37. 发明申请

US20080170632A1 Apparatus and Method for Generating Ranging Pseudo Noise Code 有权
标题翻译：用于生成测距伪噪声码的装置和方法
公开(公告)号：US20080170632A1
公开(公告)日：2008-07-17
申请号：US11791055
申请日：2005-11-11
申请人： Kyung-Yeol Sohn , Chang-Wahn Yu , Youn-Ok Park
发明人： Kyung-Yeol Sohn , Chang-Wahn Yu , Youn-Ok Park
IPC分类号： H04J11/00 , H04L27/28
CPC分类号： H04J13/10 , H04J13/0022
摘要： Disclosed is an apparatus for generating a ranging pseudo noise (PN) code used in a base station of a portable internet system of an orthogonal frequency division multiplexing access scheme, wherein a ranging pseudo noise mask value is generated using a cell ID number, and then the generated ranging pseudo noise mask value is stored in a memory. A final ranging PN code is generated using the stored ranging PN mask value and a status of a pseudo random binary sequence for generating a ranging PN code. With such a structure, the maximal 256-numbered ranging PN code values can be obtained simultaneously with each 144 bit-length.
摘要翻译：公开了一种用于生成在正交频分复用接入方案的便携式互联网系统的基站中使用的测距伪噪声（PN）码的装置，其中使用小区ID号生成测距伪噪声掩码值，然后生成的测距伪噪声掩码值被存储在存储器中。使用所存储的测距PN掩码值和用于生成测距PN码的伪随机二进制序列的状态来生成最终测距PN码。利用这种结构，可以同时获得每个144位长度的最大256个测距PN码值。

38. 发明申请

US20070164902A1 Smart antenna beamforming device in communication system and method thereof 有权
标题翻译：通信系统中的智能天线波束成形装置及其方法
公开(公告)号：US20070164902A1
公开(公告)日：2007-07-19
申请号：US11607270
申请日：2006-12-01
申请人： Young-Jo Bang , Young-Ho Yun , Chang-Wahn Yu , Hyung Park , Youn-Ok Park
发明人： Young-Jo Bang , Young-Ho Yun , Chang-Wahn Yu , Hyung Park , Youn-Ok Park
IPC分类号： H01Q3/00 , G01S3/16
CPC分类号： H04B7/086 , G01S3/74
摘要： A beamforming device includes a Direction Of Arrival (DOA) estimation unit for estimating DOAs of the received signals based on a data subcarrier matrix; a pre-spatial filtering unit for using the estimated DOA, performing a filtering operation for the data subcarrier matrix, and generating filtering matrixes; a signal identification unit for using a data sequence, identifying original and interference signals, and generating the DOAs of the original and interference signals; a spatial filtering unit for generating an interference-plus-noise covariance matrix by using the DOA of the interference signal, eliminating the interference signal by using the covariance matrix and the DOA of the original signal, and forming final beams for the original signal; and a channel estimating and signal combining unit for performing a maximal ratio combining operation so that the final beams are combined as one combined final beam.
摘要翻译：波束形成装置包括：基于数据子载波矩阵估计接收信号的DOA的到达方向估计单元; 用于使用所估计的DOA的预空间滤波单元，对所述数据子载波矩阵执行滤波操作，以及生成滤波矩阵; 信号识别单元，用于使用数据序列，识别原始和干扰信号，以及生成原始和干扰信号的DOA; 空间滤波单元，用于通过使用干扰信号的DOA产生干扰加噪声协方差矩阵，通过使用原始信号的协方差矩阵和DOA消除干扰信号，并且为原始信号形成最终的波束; 以及信道估计和信号组合单元，用于执行最大比组合操作，使得最终光束被组合为一个组合的最终光束。

39. 发明授权

US08521799B2 Row-vector norm comparison method and row-vector norm comparison apparatus for inverse matrix 有权
标题翻译：行向量范数比较法和反向矩阵的行向量范数比较装置
公开(公告)号：US08521799B2
公开(公告)日：2013-08-27
申请号：US12165209
申请日：2008-06-30
申请人： Young Ha Lee , Seung Jae Bahng , Youn-Ok Park
发明人： Young Ha Lee , Seung Jae Bahng , Youn-Ok Park
IPC分类号： G06F7/32 , G06F7/38
CPC分类号： G06F17/16
摘要： Disclosed are a row-vector norm comparison method and a row-vector norm comparison apparatus for an inverse matrix. A row-vector norm comparison apparatus includes: an input matrix processing module that receives and combines constituent elements of a matrix; a cofactor operation module that multiplexes the combination result of the constituent elements to calculate factors constituting an adjoint matrix; a square calculation module that squares the calculated factors; a summation module that selects a predetermined number of factors among the squared factors and sums the selected factors to calculate the norms of row vectors in an inverse matrix; and a norm comparison module that outputs a comparison result of the calculated norms of the row vectors. A row-vector norm comparison method includes: combining constituent elements of a matrix to generates a plurality of combination results of the constituent elements; multiplexing the combination results to calculate factors constituting an adjoint matrix of the matrix; squaring the calculated factors and selectively summing the squared factors; and calculating the norms of row vectors in an inverse matrix and comparing the calculated norms of the row vectors. With this configuration, row-vector norm comparison for an inverse matrix can be performed with a design structure. Therefore, it is not necessary to use an existing complex operation method. In addition, low power consumption of the multiple antenna system can be achieved, and efficiency of the design structure can be improved.
摘要翻译：公开了用于逆矩阵的行向量范数比较方法和行向量范数比较装置。行向量范数比较装置包括：输入矩阵处理模块，其接收并组合矩阵的组成元素; 辅助因子操作模块，其将所述组成元素的组合结果复用以计算构成伴随矩阵的因子; 平方计算模块，对计算的因子进行平方; 求和模块，其选择平方因子中的预定数量的因子，并且对所选择的因子进行求和以计算逆向矩阵中的行向量的范数; 以及范数比较模块，其输出所计算的行向量范围的比较结果。行向量范数比较方法包括：组合矩阵的组成元素以生成组成元素的多个组合结果; 将组合结果复用以计算构成矩阵的伴随矩阵的因子; 平均计算因子并选择性求和平方因子; 以及计算逆矩阵中的行向量的范数并比较所计算的行向量的范数。利用这种配置，可以用设计结构来执行逆矩阵的行向量范数比较。因此，不需要使用现有的复杂操作方法。此外，可以实现多天线系统的低功耗，并且可以提高设计结构的效率。

40. 发明授权

US07593754B2 Receiving apparatus and receiving method of communication system with multiple antennas 有权
标题翻译：具有多个天线的通信系统的接收装置和接收方法
公开(公告)号：US07593754B2
公开(公告)日：2009-09-22
申请号：US11635715
申请日：2006-12-07
申请人： Young-Ha Lee , Youn-Ok Park
发明人： Young-Ha Lee , Youn-Ok Park
IPC分类号： H04M1/00 , H04Q7/20
CPC分类号： H04B7/0845
摘要： A receiving method and apparatus of an orthogonal frequency division multiplexing access system having multiple antennas that is capable of improving system design and realization of integration degree by reducing complexity of fast Fourier transform (FFT) and noncoherent combination is provided. The receiving apparatus of a communication system having multiple antennas includes a parallel/series converter for converting data received according to each receiving path from parallel to series data; a fast Fourier transform (FFT) unit for fast Fourier transforming the data converted from parallel to series data; a series/parallel converter for converting the fast Fourier transformed series data from series to parallel data; a series noncoherent combiner for noncoherently combining the fast Fourier transformed series data and outputting the noncoherent combined data; a channel estimator/compensator for channel-estimating/compensating the data converted to parallel according to respective receiving paths; and a coherent combiner for coherently combining the channel-estimated/compensated data and for outputting the coherent combined data.
摘要翻译：提供了具有多个天线的正交频分复用接入系统的接收方法和装置，其能够通过降低快速傅里叶变换（FFT）和非相干组合的复杂度来改善系统设计和集成度的实现。具有多个天线的通信系统的接收装置包括用于将根据每个接收路径接收的数据从并行转换为串行数据的并行/串联转换器; 快速傅立叶变换（FFT）单元，用于将从并行转换的数据快速傅里叶变换成串行数据; 用于将快速傅里叶变换的串行数据从串行数据转换为并行数据的串/并行转换器; 一种用于非相干组合快速傅立叶变换序列数据并输出非相干组合数据的串联非相干组合器; 信道估计/补偿器，用于根据各个接收路径对被转换为并行的数据进行信道估计/补偿; 以及用于相干地组合信道估计/补偿数据并输出相干组合数据的相干组合器。

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