公开(公告)号：US07532902B2

公开(公告)日：2009-05-12

申请号：US11312172

申请日：2005-12-20

申请人： In-Chun Lim ,  Tae-Gon Kim ,  Yun-Sang Park ,  Bong-Gee Song

发明人： In-Chun Lim ,  Tae-Gon Kim ,  Yun-Sang Park ,  Bong-Gee Song

IPC分类号： H04W68/00 ,  H04J11/00 ,  H04W4/00

CPC分类号： H04L27/2685 ,  H04B1/70735 ,  H04L27/2655 ,  H04L27/2675 ,  H04L27/2684

摘要： Disclosed is an apparatus and a method for performing a cell search in a wireless communication system. A subscriber station calculates the power of subcarriers according to their positions in a preamble signal of a frequency domain and identifies a segment of a cell to which the subscriber station belongs. Then, the subscriber station correlates PN sequences, which correspond to the segment of the cell that has been identified, with the preamble signal of the frequency domain. Therefore, the number of calculations for determining correlation values in a cell search is remarkably reduced.

摘要翻译： 公开了一种用于在无线通信系统中执行小区搜索的装置和方法。 用户台根据频域的前导信号中的位置来计算子载波的功率，并且识别用户站所属的小区的一段。 然后，用户台将对应于已经识别的小区的段的PN序列与频域的前导信号相关联。 因此，用于确定小区搜索中的相关值的计算次数显着降低。

公开(公告)号：US20060133321A1

公开(公告)日：2006-06-22

申请号：US11312172

申请日：2005-12-20

申请人： In-Chun Lim ,  Tae-Gon Kim ,  Yun-Sang Park ,  Bong-Gee Song

发明人： In-Chun Lim ,  Tae-Gon Kim ,  Yun-Sang Park ,  Bong-Gee Song

IPC分类号： H04Q7/00

CPC分类号： H04L27/2685 ,  H04B1/70735 ,  H04L27/2655 ,  H04L27/2675 ,  H04L27/2684

摘要： Disclosed is an apparatus and a method for performing a cell search in a wireless communication system. A subscriber station calculates the power of subcarriers according to their positions in a preamble signal of a frequency domain and identifies a segment of a cell to which the subscriber station belongs. Then, the subscriber station correlates PN sequences, which correspond to the segment of the cell that has been identified, with the preamble signal of the frequency domain. Therefore, the number of calculations for determining correlation values in a cell search is remarkably reduced.

公开(公告)号：US07907682B2

公开(公告)日：2011-03-15

申请号：US12030370

申请日：2008-02-13

申请人： In-Chun Lim ,  Yong-Sun Hwang ,  Bong-Gee Song

发明人： In-Chun Lim ,  Yong-Sun Hwang ,  Bong-Gee Song

IPC分类号： H04L27/00

CPC分类号： H04L27/2676 ,  H04L27/266

摘要： An apparatus and method for initial fractional frequency offset estimation are provided. In an apparatus for estimating an initial fractional frequency offset in a Broadband Wireless Access (BWA) communication system, the apparatus includes a sample power calculator for calculating a power of input sample data and for calculating an average power of a specific symbol, a power threshold comparator for comparing the sample data power in magnitude with the average power of the specific symbol and for outputting one of an accumulation ON and OFF signal, a first buffer for correlating a last data of the sample data with the sample data and for storing sample data corresponding to a preset number of correlation results, a second buffer for storing sample data corresponding to correlation results other than the sample data stored in the first buffer; and an accumulator for allowing accumulation of sample data stored in the second buffer if the power threshold comparator outputs the accumulation ON signal.

摘要翻译： 提供了一种用于初始分数频偏估计的装置和方法。 在用于估计宽带无线接入（BWA）通信系统中的初始分数频率偏移的装置中，该装置包括用于计算输入采样数据的功率并用于计算特定符号的平均功率的采样功率计算器，功率阈值 比较器，用于将幅度上的采样数据功率与特定符号的平均功率进行比较，并输出累加ON和OFF信号中的一个;第一缓冲器，用于将采样数据的最后数据与采样数据相关联并用于存储采样数据 对应于预设数量的相关结果;第二缓冲器，用于存储对应于除了存储在第一缓冲器中的采样数据之外的相关结果的采样数据; 以及累加器，用于如果功率阈值比较器输出累加ON信号，则允许累积存储在第二缓冲器中的采样数据。

公开(公告)号：US08165547B2

公开(公告)日：2012-04-24

申请号：US12188441

申请日：2008-08-08

申请人： Ki-Joon Hong ,  In-Chun Lim ,  Bong-Gee Song ,  Jin-Woo Roh

发明人： Ki-Joon Hong ,  In-Chun Lim ,  Bong-Gee Song ,  Jin-Woo Roh

IPC分类号： H04B1/40 ,  H04B1/16

CPC分类号： H04B1/0067 ,  H03J7/04 ,  H04L2027/0028 ,  H04L2027/0046 ,  H04W56/005

摘要： An apparatus and a method for acquiring synchronization to support multi-frequency in a mobile communication terminal are provided. The apparatus includes a frequency generator, a control signal generator and at least two modems for operating respective Frequency Allocations (FAs) by sharing the frequency generator and the control signal generator. In an embodiment, the frequency generator respectively receives first reference frequency clock signals from an oscillator of each of the at least two modems and generates a second reference frequency clock signal and the control signal generator outputs a signal for controlling the oscillator of each of the at least two modems according to a frequency offset value estimated in each of the at least two modems.

摘要翻译： 提供了一种在移动通信终端中获取同步以支持多频的装置和方法。 该装置包括频率发生器，控制信号发生器和用于通过共享频率发生器和控制信号发生器来操作相应的频率分配（FA）的至少两个调制解调器。 在一个实施例中，频率发生器分别从至少两个调制解调器的振荡器接收第一参考频率时钟信号，并产生第二参考频率时钟信号，并且控制信号发生器输出用于控制每个at 至少两个调制解调器，根据在所述至少两个调制解调器的每一个中估计的频率偏移值。

公开(公告)号：US09401831B2

公开(公告)日：2016-07-26

申请号：US12908246

申请日：2010-10-20

申请人： Hyun-Jung Jung ,  Young-Il Son ,  Hye-Won Nam ,  Yong-Won Shin ,  In-Chun Lim

发明人： Hyun-Jung Jung ,  Young-Il Son ,  Hye-Won Nam ,  Yong-Won Shin ,  In-Chun Lim

IPC分类号： H04L25/06

CPC分类号： H04L25/062

摘要： An apparatus and method for removing a Direct Current (DC) offset at a receiving terminal in a wireless communication system are provided. In the method, a frame is divided into at least two time resource blocks. Resource allocation information is used to discriminate between at least one time resource block of a data-unmapped interval and at least one time resource block of a data-mapped interval. The DC offset is measured during the data-unmapped interval. The DC offset is compensated during the data-unmapped interval on a time resource block basis by using the measured DC offset.

摘要翻译： 提供了一种用于在无线通信系统中的接收终端处去除直流（DC）偏移的装置和方法。 在该方法中，将帧划分为至少两个时间资源块。 资源分配信息用于区分数据未映射间隔的至少一个时间资源块和数据映射间隔的至少一个时间资源块。 在数据未映射间隔期间测量直流偏移。 通过使用测量的直流偏移，在时间资源块的数据未映射间隔期间补偿DC偏移。

公开(公告)号：US08539268B2

公开(公告)日：2013-09-17

申请号：US12617088

申请日：2009-11-12

申请人： In-Chun Lim ,  Byung-Tae Kang ,  Jin-Woo Roh

发明人： In-Chun Lim ,  Byung-Tae Kang ,  Jin-Woo Roh

IPC分类号： G06F1/26 ,  G06F1/32

CPC分类号： G06F13/24 ,  G06F1/3209 ,  G06F9/4812 ,  G06F9/50 ,  Y02D10/22 ,  Y02D10/24

摘要： An apparatus and a method for controlling power consumption in a system having a plurality of modems are provided. In the method, whether an interrupt is generated in each modem is detected. An amount of current consumption of the system at a processing point of the generated interrupt is determined. The amount of current consumption of the system is compared with a threshold, so that the processing point of the generated interrupt is controlled.

摘要翻译： 提供了一种用于在具有多个调制解调器的系统中控制功耗的装置和方法。 在该方法中，检测每个调制解调器中是否产生中断。 确定在产生的中断的处理点处的系统的电流消耗量。 将系统的电流消耗量与阈值进行比较，从而控制生成的中断的处理点。