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1. 发明授权

US07050776B2 Mobile communication apparatus including transceiving multi-antennas and mobile communication method 有权
公开(公告)号：US07050776B2
公开(公告)日：2006-05-23
申请号：US10277734
申请日：2002-10-23
申请人： Sung-jin Kim , Jong-hyeuk Lee , Ho-jin Kim , Yung-soo Kim
发明人： Sung-jin Kim , Jong-hyeuk Lee , Ho-jin Kim , Yung-soo Kim
IPC分类号： H04B7/00
CPC分类号： H04B7/0854 , H04B7/0626 , H04B7/0634 , H04B7/065 , H04W52/228 , H04W52/24 , H04W52/343 , H04W52/346 , H04W52/42
摘要： A mobile communication apparatus having multiple transmission antennas and multiple reception antennas and a mobile communication method used in the mobile communication apparatus, wherein a base station, which has at least one reception antenna, restores long-term and short-term information determined in consideration of first characteristics in a mobile station, which has at least one transmission antenna, from a feedback signal received from the mobile station, spatially processes dedicated physical channel signals using basis information produced from the restored long-term and short-term information, and transmits the results of addition of the spatially-processed signals to pilot signals to the mobile station, wherein the first characteristics are the characteristics of the downlink channels of the respective transmission and reception antennas. Accordingly, the feedback of long-term and short-term information from the mobile station to the base station minimizes the effects of fading, interference, and noise and maximizing throughput.

2. 发明授权

US07307974B2 System and method for channel estimation in an OFDM mobile communication system 有权
标题翻译： OFDM移动通信系统中信道估计的系统和方法
公开(公告)号：US07307974B2
公开(公告)日：2007-12-11
申请号：US10840584
申请日：2004-05-06
申请人： Jong-Hyeuk Lee , Yung-soo Kim , Gi-Hong Im , Hui-Chul Won , Cheol-Jin Park
发明人： Jong-Hyeuk Lee , Yung-soo Kim , Gi-Hong Im , Hui-Chul Won , Cheol-Jin Park
IPC分类号： H04Q7/00
CPC分类号： H04L27/2602 , H04B7/0669 , H04L1/0618 , H04L25/0204 , H04L25/022
摘要： A mobile communication system, a transmitter includes a first transmission antenna and a second transmission antenna, and the first and second transmission antennas transmit signals through at least one odd carrier and at least one even carrier. The transmitter determines a first symbol and a second symbol to be used for initial channel estimation of a receiver, encodes the first symbol and the second symbol by a preset transmit diversity scheme for a preset time, and transmits the encoded first and second symbols to the receiver through odd carriers and even carriers of the first transmission antenna and the second transmission antenna. The receiver receives a signal for the preset period, estimates channel frequency responses of odd carriers of the first transmission antenna and channel frequency responses of even carriers of the second transmission antenna, and estimates channel frequency responses of even carriers of the first transmission antenna and channel frequency responses of odd carriers of the second transmission antenna by using the estimated channel frequency responses.
摘要翻译：移动通信系统，发射机包括第一发射天线和第二发射天线，第一和第二发射天线通过至少一个奇数载波和至少一个偶数载波发射信号。发射机确定要用于接收机的初始信道估计的第一符号和第二符号，通过预设的发射分集方案对第一符号和第二符号进行预设时间编码，并将编码的第一和第二符号发送到接收机通过第一发射天线和第二发射天线的奇数载波和偶数载波。接收机接收预设周期的信号，估计第一发射天线的奇数载波的信道频率响应和第二发射天线的偶数载波的信道频率响应，并估计第一发射天线和信道的偶数载波的信道频率响应通过使用估计的信道频率响应对第二发射天线的奇数载波的频率响应。

3. 发明申请

US20050008085A1 Transmitting and receiving apparatus and method in an Orthogonal Frequency Division Multiplexing system using an insufficient cyclic prefix 审中-公开
标题翻译：在正交频分复用系统中使用不充分的循环前缀的发送和接收设备和方法
公开(公告)号：US20050008085A1
公开(公告)日：2005-01-13
申请号：US10846465
申请日：2004-05-14
申请人： Jong-Hyeuk Lee , Yung-soo Kim , Gi-Hong Im , Hui-Chul Won , Cheol-Jin Park
发明人： Jong-Hyeuk Lee , Yung-soo Kim , Gi-Hong Im , Hui-Chul Won , Cheol-Jin Park
IPC分类号： H04J11/00 , H04L25/03 , H04L27/26 , H04K1/10
CPC分类号： H04L5/006 , H04L5/0007 , H04L5/0046 , H04L2025/03414
摘要： A preprocessing apparatus and method for a transmitter and a receiver to prevent system performance degradation caused by Inter-Channel Interference (ICI) or inter-symbol interference (ISI) in an OFDM system. In the OFDM system using N carriers having different frequency bands and K carriers of the N carriers designated as redundant carriers, the transmitter renders ICI-causing parts to be zeroes in a data frame, when a cyclic prefix is not longer than a channel impulse response. Therefore, the ICI is prevented. The receiver eliminates the ISI involved in a current frame using an interference estimated from a previous data frame. Therefore, noise spread caused by the use of redundant carriers is prevented and system complexity is remarkably reduced.
摘要翻译：一种用于在OFDM系统中防止由信道间干扰（ICI）或符号间干扰（ISI）引起的系统性能下降的发射机和接收机的预处理装置和方法。在使用具有不同频带的N个载波的OFDM系统和指定为冗余载波的N个载波的K个载波的情况下，当循环前缀不长于信道脉冲响应时，发射机在数据帧中使ICI引起的部分为零。因此，ICI被阻止。接收器使用从先前数据帧估计的干扰消除了当前帧中涉及的ISI。因此，防止使用冗余载波引起的噪声扩展，并且系统复杂度显着降低。

4. 发明授权

US6002730A Method for detecting data and device therefor of data storing unit 失效
标题翻译：数据存储单元检测数据及其装置的方法
公开(公告)号：US6002730A
公开(公告)日：1999-12-14
申请号：US744458
申请日：1996-11-07
申请人： Jin-sook Kim , Yung-soo Kim , Sung-jin Kim
发明人： Jin-sook Kim , Yung-soo Kim , Sung-jin Kim
IPC分类号： G06F3/05 , G11B20/10 , G11B20/14 , H03L7/085 , H04L7/02 , H04L7/033 , H04L25/36
CPC分类号： H04L7/0062 , G11B20/10009 , G11B20/1403 , H03L7/085 , H04L7/0334
摘要： A method and device for detecting data of a data storing unit includes an analog/digital converter for outputting a symbol signal r.sub.k by sampling an analog signal r(t) with a sampling clock, an equalizer for outputting z.sub.k by equalizing the output r.sub.k of the analog/digital converter, a data detector for detecting symbol data a.sub.k from the equalized output z.sub.k, and a clock recovering portion for correcting frequency and phase of the sampling clock, the clock recovering portion performing the correction at an edge of a symbol data a.sub.k. Therefore, it is possible to reduce errors in detecting data and to effectively detect the data with a far better performance that conventional technology and to restore a sampling clock by limiting a sampling clock recovering process to operate only at the edge of the symbol data.
摘要翻译：用于检测数据存储单元的数据的方法和装置包括一个模拟/数字转换器，用于通过用采样时钟对模拟信号r（t）进行采样来输出符号信号rk，一个均衡器，用于通过均衡输出rk的输出rk 模拟/数字转换器，用于从均衡输出zk检测符号数据+ E，cir a + EE k的数据检测器和用于校正采样时钟的频率和相位的时钟恢复部分，时钟恢复部分执行在符号数据的边缘+ E，cir a + EE k。因此，可以减少检测数据中的错误，并且以传统技术的更好的性能有效地检测数据，并且通过限制采样时钟恢复处理仅在符号数据的边缘进行操作来恢复采样时钟。

5. 发明授权

US06292816B1 Nonlinear equalizing apparatus 有权
标题翻译：非线性均衡装置
公开(公告)号：US06292816B1
公开(公告)日：2001-09-18
申请号：US09225505
申请日：1999-01-06
申请人： Yung-soo Kim
发明人： Yung-soo Kim
IPC分类号： G06F1710
CPC分类号： H03H21/0012 , G11B20/10009
摘要： A nonlinear equalizing apparatus used for a digital magnetic recording medium is provided. The nonlinear equalizing apparatus according to the present invention includes a linear filter for linear filtering the input value rk, a pattern dependent filter including 2&tgr;+v tap values selected by the respective patterns (bk−n+v:k−n+1,bk−n−1:k−n−&tgr;) of future v and past &tgr; bit data transition absolute values and N taps pn(bk−n+v:k−n+1,bk−n−1:k−n−&tgr;) for outputting the value obtained by multiplying the selected tap value with the current transition (xk−n), and (wherein, xk−n=(ak−n−ak−n−1)/2∈{−1, 0, }, bk−n=|xk−n|∈{0, 1}, bk−n−1:k−n−&tgr;=(bk−n−1 bk−n−2 . . . bk−n−&tgr;), bk−n+v:k−n+1=(bk−n+v bk−n+v−1 . . . bk−n+1), n=0, 1, 2, . . . , N, and N is a predetermined integer not less than 1+v) a detector for obtaining an error value ek by a subsequent equation, with respect to all combinations of current and future data sequences e k = ∑ m ⁢ r k - m ⁢ f m - ∑ n ⁢ x k - n ⁢ p n ⁡ ( b k - n + v ⁢ : k - n + 1 , b k - n - 1 : k - n - τ ) (wherein, ƒm is the linear filter) and detecting current data assumed in the combination by which the minimum error square value is generated as the original data ak. According to the present invention, it is possible to effectively display the nonlinear distortion of the digital magnetic storing channel generated by the interaction between adjacent data and to remarkably reduce a modeling error compared with a conventional model in which the influence of the future bit cannot be considered, by displaying the nonlinear channel of a high density digital magnetic storing apparatus as transition pulses selected according to the pattern of the transition absolute value of the future v bits and the past &tgr; bits.
摘要翻译：提供了一种用于数字磁记录介质的非线性均衡装置。根据本发明的非线性均衡装置包括用于线性滤波输入值rk的线性滤波器，包括由各个模式（bk-n + v：k-n + 1，...）选择的2 + t + bk-n-1：kn＆tgr;）未来v和过去＆tgr; 用于输出通过将所选抽头值与当前转换（xk）相乘而获得的值的位数据转换绝对值和N抽头pn（bk-n + v：k-n + 1，bk-n-1：kn-＆ -n），（其中，xk-n =（ak-n-ak-n-1）/2∈{-1,0}，bk-n = | xk-n |∈{0,1} bk-n-1：kn-＆tgr; =（bk-n-1 bk-n-2 ... bk-n-＆tgr）），bk-n + v：k-n + 1 =（bk-n + v bk-n + v-1 ... bk-n + 1），n = 0,1,2，...，N，N是不小于1 + v的预定整数）关于当前和未来数据序列的所有组合（其中，ƒm是线性滤波器）并且检测在组合中假定的最小误差平方值作为原始数据ak产生的当前数据的后续方程的误差值ek 根据本发明，可以有效地显示由相邻数据之间的相互作用产生的数字磁存储通道的非线性失真，并且与常规模型相比显着地减少了建模误差通过显示高密度数字磁存储装置的非线性通道作为根据未来v位和过去的转换绝对值的模式选择的转换脉冲，不能考虑未来位的影响。位。

6. 发明授权

US06459679B1 Method and apparatus for synchronizing orthogonal frequency division multiplexing (OFDM) receiver 失效
标题翻译：用于同步正交频分复用（OFDM）接收机的方法和装置
公开(公告)号：US06459679B1
公开(公告)日：2002-10-01
申请号：US09349731
申请日：1999-07-08
申请人： Yung-soo Kim
发明人： Yung-soo Kim
IPC分类号： H04J1100
CPC分类号： H04L5/0048 , H04L27/2613 , H04L27/2656 , H04L27/2657 , H04L27/2662 , H04L27/2675
摘要： A method and apparatus for synchronizing an OFDM receiver is provided. The method includes the steps of: (a) receiving an OFDM reference symbol before user data OFDM symbols, the OFDM reference symbol having sub-symbol signals at only random, even-numbered sub-carriers and having no signals at any other even-numbered sub-carriers and all odd-numbered sub-carriers in the frequency domain, and the first half of the symbol having the same characteristics as the remaining half in the time domain; (b) obtaining OFDM digital signal samples rk by sampling the received OFDM reference symbol and converting the OFDM reference symbol samples into digital signals; (c) obtaining a predetermined timing metric for each of the OFDM signal samples rk according to the time-domain characteristics of the reference symbol, and detecting the point in time at which the power of the timing metric is maximum as the starting point of a symbol/frame of the OFDM signal; and (d) correcting for the offsets of sub-carrier frequencies that are less than is the frequency spacing between two adjacent sub-carriers by obtaining a frequency offset from the phase of the timing metric at the detected symbol/frame starting point, and correcting for the offsets of sub-carrier frequencies that are greater than the frequency spacing between two adjacent sub-carriers by obtaining the value which maximizes the power metrics according to the frequency-domain characteristics of the reference symbol.
摘要翻译：提供了一种用于同步OFDM接收机的方法和装置。该方法包括以下步骤：（a）在用户数据OFDM符号之前接收OFDM参考符号，所述OFDM参考符号仅具有随机偶数子载波上的子符号信号，并且在任何其它偶数编号子载波和频域中的所有奇数子载波，并且符号的前半部分与时域中剩余的一半具有相同的特征; （b）通过对接收的OFDM参考符号进行采样并将OFDM参考符号样本转换成数字信号来获得OFDM数字信号样本rk; （c）根据参考符号的时域特性获得每个OFDM信号采样rk的预定定时度量，并且检测定时度量的功率最大的时间点作为起始点 OFDM信号的符号/帧; 以及（d）通过从检测到的符号/帧起点处的定时度量的相位获得频率偏移来校正小于两个相邻子载波之间的频率间隔的子载波频率的偏移，并且校正对于通过获得根据参考符号的频域特性使功率度量最大化的值，大于两个相邻子载波之间的频率间隔的子载波频率的偏移。

7. 发明授权

US5973553A Apparatus for removing additive disturbance from data channel and method therefor 失效
标题翻译：用于从数据通道中除去附加扰动的装置及其方法
公开(公告)号：US5973553A
公开(公告)日：1999-10-26
申请号：US16932
申请日：1998-02-02
申请人： Yung-soo Kim
发明人： Yung-soo Kim
IPC分类号： G11B5/09 , H03K5/1252 , H03K5/00
CPC分类号： H03K5/1252
摘要： An apparatus for detecting and removing an additive disturbance from a signal in a data transmission channel, and an method therefor. The apparatus includes: a disturbance detector which detects whether a disturbance exists in an input signal; a canceling signal generating portion which, when a disturbance is detected by the disturbance detector, generates a canceling signal beginning at the same time as the disturbance, based on a predetermined period of the input signal; and a disturbance remover which subtracts the canceling signal from the input signal to remove the disturbance. Therefore, the canceling signal is generated based on both the output and input signals, thereby precisely removing the disturbance.
摘要翻译：一种用于从数据传输通道中的信号检测和去除加法干扰的装置及其方法。该装置包括：检测输入信号中是否存在干扰的干扰检测器; 消除信号生成部，其基于所述输入信号的预定周期，当所述干扰检测器检测到干扰时，产生与所述干扰同时开始的消除信号; 以及从输入信号中减去消除信号以去除干扰的干扰去除器。因此，基于输出信号和输入信号产生消除信号，从而精确地消除干扰。

8. 发明授权

US06952394B1 Method for transmitting and receiving orthogonal frequency division multiplexing signal and apparatus therefor 有权
标题翻译：用于发送和接收正交频分复用信号的方法及其装置
公开(公告)号：US06952394B1
公开(公告)日：2005-10-04
申请号：US09576767
申请日：2000-05-24
申请人： Yung-soo Kim , Ji-hoon Park
发明人： Yung-soo Kim , Ji-hoon Park
IPC分类号： H04J11/00 , H04L1/00 , H04L25/03 , H04L27/26 , H04N5/44 , H04N19/00 , H04N19/436 , H04N19/46 , H04N19/60 , H04N19/70 , H04N19/80
CPC分类号： H04L1/0071 , H04L25/03012 , H04L27/2614 , H04L27/2628 , H04L27/2633
摘要： A method for transmitting orthogonal frequency division multiplexing (OFDM) signals including coding the OFDM signals; forming a block of N coded data and dividing the block into L M-sized small blocks; M-point inverse fast Fourier transforming the L small blocks; combining the transformed blocks to generate an N-sized inversely-transformed block; attaching a cyclic prefix to the N-sized block; and transforming the blocks into an analog signal; and transmitting the analog signal. A method of receiving OFDM signals including digitally converting received OFDM signals and obtaining a samples from the transformed signals; detecting the starting point of an N-sized signal sample block from the samples; dividing the signal sample block into L M-sized small blocks M-point fast Fourier transforming the L small blocks; combining the transformed small blocks to generate an N-sized transform block; detecting data from the generated block, and decoding the detected data. N, M and L are integers of 1 or more and L=N/M.
摘要翻译：一种用于发送正交频分复用（OFDM）信号的方法，包括对所述OFDM信号进行编码; 形成N个编码数据块，并将该块划分成L个M个小块; M点逆快速傅立叶变换L个小块; 组合经变换的块以生成N尺寸的反向变换块; 将循环前缀附加到N尺寸块; 并将块变换为模拟信号; 并发送模拟信号。一种接收OFDM信号的方法，包括数字地转换接收到的OFDM信号并从变换的信号中获取样本; 从样本中检测N个大小的信号样本块的起始点; 将信号采样块分为L M个小块，M点快速傅里叶变换L个小块; 组合变换的小块以产生N尺寸的变换块; 从所生成的块中检测数据，并解码检测到的数据。 N，M和L是1或更大的整数，L = N / M。

9. 发明授权

US06335949B1 Non-linear signal receiver 失效
标题翻译：非线性信号接收机
公开(公告)号：US06335949B1
公开(公告)日：2002-01-01
申请号：US09286292
申请日：1999-04-06
申请人： Yung-soo Kim
发明人： Yung-soo Kim
IPC分类号： H03H730
CPC分类号： H04L25/03133 , G11B5/012 , G11B5/09 , G11B20/10009 , G11B20/10046 , H03M1/0836 , H03M1/12 , H04L7/0062
摘要： A non-linear signal receiver. The non-linear signal receiver for detecting an original data ak from an input signal r(t) which is a binary data stream input through a channel or reproduced from data recorded on a storing device includes: an analog-to-digital converter (ADC) for sampling the input value according to sampling timing phases, and converting the sampled data into a digital signal rk; a modeling portion including 2N+1 taps Pn (n=−N, . . . , 0, . . . , N) each for selecting one of 2&tgr;+&ngr; tap values according to each pattern pn (bk−n+&ngr;:k−n+1, bk−n−1:k−n−&tgr;) of absolute values of the data transitions future &ngr; bits and past &tgr; bits, for estimating the channel characteristics of the sampled signal from the selected tap value and the data transition value; a timing recovery portion for controlling the sampling timing phase of the analog-to-digital converter using a phase gradient equal to p1(0)−p−1(0), which is the difference between values of respective taps positioned symmetrically around the tap P0 of the modeling portion; an equalizer for compensating for the deteriorated characteristics of the output value of the analog-to-digital converter; and a detector for converting the output of the equalizer to a digital value, to detect the original signal. Therefore, an accurate timing phase can be found using a model in which a non-linear channel of a high-density digital magnetic storing device is expressed by transition pulses selected according to the future &ngr; bits and the past &tgr; bits, thereby reducing timing jitter and bias.
摘要翻译：非线性信号接收机。用于从作为通过信道输入的二进制数据流的输入信号r（t）检测原始数据ak的非线性信号接收器，或者从记录在存储装置上的数据再现的包括：模数转换器），用于根据采样定时相位对输入值进行采样，并将采样数据转换为数字信号rk; 模型部分包括2N + 1抽头Pn（n = -N，...，0，...，N），用于选择2＆tgr; +＆ngr; 根据数据转换未来的绝对值的每个模式pn（bk-n +＆ngr;：k-n + 1，bk-n-1：k-n-＆tgr）的抽头值; 位和过去位，用于从所选择的抽头值和数据转换值估计采样信号的信道特性; 定时恢复部分，用于使用等于p1（0）-p-1（0）的相位梯度来控制模数转换器的采样定时相位，该相位梯度是对称地围绕抽头的各个抽头的值之间的差值 P0的建模部分; 均衡器，用于补偿模数转换器的输出值的劣化特性; 以及用于将均衡器的输出转换为数字值的检测器，以检测原始信号。因此，可以使用其中高密度数字磁存储装置的非线性通道由根据未来选择的转换脉冲表示的模型可以找到精确的定时相位。位和过去＆tgr; 位，从而减少定时抖动和偏置。

10. 发明授权

US6163517A Signal detection method of data recording/reproducing apparatus and device therefor 失效
标题翻译：数据记录/再现装置的信号检测方法及其装置
公开(公告)号：US6163517A
公开(公告)日：2000-12-19
申请号：US109408
申请日：1998-07-02
申请人： Seong-jin Kim , Yung-soo Kim , Ji-yong Jun
发明人： Seong-jin Kim , Yung-soo Kim , Ji-yong Jun
IPC分类号： H04L25/03 , G11B7/005 , G11B20/10 , H03M13/23 , H03M13/39 , H03M13/41 , H04L1/00 , G11B7/00
CPC分类号： G11B20/10055 , G11B7/005 , G11B20/10009 , H03M13/3961 , H03M13/4107 , H03M13/6331 , H03M13/6343 , H04L1/0054
摘要： A signal detection device and method of a data recording/reproducing apparatus. The signal detection device of a data recording/reproducing apparatus for recording/reproducing a digital signal U.sub.k having an arbitrary integer time k as an index, includes: an analog-to-digital converter (ADC) for converting an analog signal from which external band noise is removed after being reproduced from the data recording/reproducing apparatus, into a digital signal; a filter for modifying the digital signal converted by the analog-to-digital converter (ADC) into a signal having a predetermined spectral shape; and a Viterbi detector for detecting the spectrum signal modified by the filter as the data recorded in the data recording/reproducing apparatus. Therefore, after equalizing a signal into a spectrum expressed by 2+D+D.sup.2 +D.sup.3, which is similar to the spectrum of an optical recording/reproducing apparatus, the maximum likelihood (ML) is detected by the Viterbi detector. Accordingly, noise scarcely increases and loss by intersymbol interference is overcome, so that the signal can be detected with reliability.
摘要翻译：一种数据记录/再现装置的信号检测装置和方法。用于记录/再现具有任意整数时间k的数字信号Uk作为指标的数据记录/再现装置的信号检测装置包括：模数转换器（ADC），用于转换模拟信号，其中外部频带在从数据记录/再现装置再现之后，噪声被去除成数字信号; 用于将由模数转换器（ADC）转换的数字信号修改为具有预定光谱形状的信号的滤波器; 以及维特比检测器，用于检测由滤波器修改的频谱信号作为记录在数据记录/再现装置中的数据。因此，在将信号均衡为由光记录/再现装置的光谱相似的2 + D + D2 + D3表示的频谱之后，维特比检测器检测最大似然（ML）。因此，克服了码间干扰的噪声几乎不增加和丢失，从而可以可靠地检测信号。

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