公开(公告)号：US07936848B2

公开(公告)日：2011-05-03

申请号：US12003201

申请日：2007-12-20

申请人： Yoo-Chang Eun ,  Jeong-Soon Park ,  Soo-Bok Yeo ,  Yong-Sun Hwang ,  Jong-Han Lim

发明人： Yoo-Chang Eun ,  Jeong-Soon Park ,  Soo-Bok Yeo ,  Yong-Sun Hwang ,  Jong-Han Lim

IPC分类号： H04L27/06 ,  H03D1/00

CPC分类号： H04L25/0232 ,  H04L27/2647

摘要： An apparatus and a method for estimating a channel in a Broadband Wireless Access (BWA) communication system are provided. The apparatus includes a subcarrier demapper for extracting pilot symbols at preset positions for a channel estimation; and a channel estimator for acquiring channel estimate values of subcarriers through an Infinite Impulse Response (IIR) filtering using the pilot symbols provided from the subcarrier demapper and a preset filter factor. Thus, the channel condition can be estimated by taking into account the channel change.

摘要翻译： 提供了一种用于估计宽带无线接入（BWA）通信系统中的信道的装置和方法。 该装置包括用于在用于信道估计的预设位置处提取导频符号的子载波解映射器; 以及信道估计器，用于通过使用从子载波解映射器提供的导频符号和预设滤波器因子通过无限脉冲响应（IIR）滤波获取子载波的信道估计值。 因此，可以通过考虑信道变化来估计信道条件。

公开(公告)号：US20080152043A1

公开(公告)日：2008-06-26

申请号：US12003201

申请日：2007-12-20

申请人： Yoo-Chang Eun ,  Jeong-Soon Park ,  Soo-Bok Yeo ,  Yong-Sun Hwang ,  Jong-Han Lim

发明人： Yoo-Chang Eun ,  Jeong-Soon Park ,  Soo-Bok Yeo ,  Yong-Sun Hwang ,  Jong-Han Lim

IPC分类号： H03D1/00 ,  H04L27/06

CPC分类号： H04L25/0232 ,  H04L27/2647

摘要： An apparatus and a method for estimating a channel in a Broadband Wireless Access (BWA) communication system are provided. The apparatus includes a subcarrier demapper for extracting pilot symbols at preset positions for a channel estimation; and a channel estimator for acquiring channel estimate values of subcarriers through an Infinite Impulse Response (IIR) filtering using the pilot symbols provided from the subcarrier demapper and a preset filter factor. Thus, the channel condition can be estimated by taking into account the channel change.

摘要翻译： 提供了一种用于估计宽带无线接入（BWA）通信系统中的信道的装置和方法。 该装置包括用于在用于信道估计的预设位置处提取导频符号的子载波解映射器; 以及信道估计器，用于通过使用从子载波解映射器提供的导频符号和预设滤波器因子通过无限脉冲响应（IIR）滤波获取子载波的信道估计值。 因此，可以通过考虑信道变化来估计信道条件。

公开(公告)号：US20080181325A1

公开(公告)日：2008-07-31

申请号：US12023215

申请日：2008-01-31

申请人： Jeong-Soon Park ,  Jong-Han Lim ,  Min-Cheol Park ,  Myeong-Ae Kang ,  Heon Huh ,  Jae-Yong Lee ,  Yoo-Chang Eun

发明人： Jeong-Soon Park ,  Jong-Han Lim ,  Min-Cheol Park ,  Myeong-Ae Kang ,  Heon Huh ,  Jae-Yong Lee ,  Yoo-Chang Eun

IPC分类号： H04K1/10

CPC分类号： H04L27/2647 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0232

摘要： An apparatus and method for estimating a channel in an Orthogonal Frequency Division Multiplexing (OFDM) system is provided. The apparatus and method includes estimating a channel corresponding to a pilot of a received signal, performing a first estimation on a data channel by performing time-domain linear interpolation on pilots of previous and next symbols of the pilot using the channel estimate, performing Infinite Impulse Response (IIR) filtering on the channel estimate and the data channel estimate of the pilots of the previous and next symbols of the pilot, and performing a second estimation on the data channel by performing frequency-domain linear interpolation on a remaining zone which excludes the pilot and the zone that underwent the first estimation.

摘要翻译： 提供了一种用于估计正交频分复用（OFDM）系统中的信道的装置和方法。 该装置和方法包括：估计与接收信号的导频相对应的信道，通过使用信道估计对导频的先前和下一个符号的导频执行时域线性插值，对数据信道执行第一估计，执行无限脉冲 对导频的前一个和下一个符号的信道估计和导频的数据信道估计进行响应（IIR）滤波，并且对剩余的区域执行频域线性插值，对数据信道执行第二估计， 飞行员和经过第一次估计的区域。

公开(公告)号：US20070189366A1

公开(公告)日：2007-08-16

申请号：US11652288

申请日：2007-01-11

申请人： Dong-Ryeol Ryu ,  Hi-Chan Moon ,  Jong-Han Lim ,  Yoo-Chang Eun ,  Hoon-Geun Song

发明人： Dong-Ryeol Ryu ,  Hi-Chan Moon ,  Jong-Han Lim ,  Yoo-Chang Eun ,  Hoon-Geun Song

IPC分类号： H04B1/00

CPC分类号： H04B1/7117

摘要： Disclosed is an apparatus and method for receiving a signal transmitted through a multi-path in a wireless communication system, and more particularly an apparatus and method for removing a fake path detected by the ripple of a baseband pulse shaping filter to detect the position of an effective multi-path signal in a direct sequence Code Division Multiple Access system. The method for detecting a fake path in a user equipment in a mobile communication system includes detecting peak indexes and peak energies of peaks of signals received from node B, performing a fake path check with respect to the peaks based on the peak indexes and peak energies, and allocating fingers to peaks which have been determined not to be caused by a fake path as a result of the fake path check.

摘要翻译： 公开了一种用于接收在无线通信系统中通过多路径发送的信号的装置和方法，更具体地，涉及一种用于去除由基带脉冲整形滤波器的纹波检测到的假路径的装置和方法，以检测基带脉冲整形滤波器的位置 有效的多路径信号在直接序列码分多址系统中。 用于检测移动通信系统中的用户设备中的假路径的方法包括检测从节点B接收的信号的峰值峰值峰值能量和峰值能量，根据峰值指数和峰值能量执行关于峰值的假路径检查 并且将手指分配给作为假路径检查的结果已被确定为不被假路径引起的峰值。

公开(公告)号：US08681714B2

公开(公告)日：2014-03-25

申请号：US12503518

申请日：2009-07-15

申请人： Yoo-Chang Eun ,  Jong-Han Lim ,  In-Hyoung Kim

发明人： Yoo-Chang Eun ,  Jong-Han Lim ,  In-Hyoung Kim

IPC分类号： H04W72/04

CPC分类号： H04L1/1845 ,  H04L1/1812 ,  H04L1/1887 ,  H04L5/0007 ,  H04L5/0033 ,  H04L5/0062 ,  H04L5/0085

摘要： An apparatus and method for improving a HARQ combining gain in a broadband wireless communication system are provided. The apparatus includes a seed information generator and a subcarrier allocator. The seed information generator randomly generates a seed value for changing a channel of a subcarrier and an interference pattern in a frame unit when a HARQ combining gain is not generated because an interference pattern is the same during a retransmission period. The subcarrier allocator allocates a subcarrier using the generated seed value.

摘要翻译： 提供了一种用于改善宽带无线通信系统中的HARQ组合增益的装置和方法。 该装置包括种子信息发生器和子载波分配器。 种子信息生成器随机地生成种子值，用于当由于干扰模式在重传周期期间相同时，不产生HARQ组合增益时，以帧为单位改变子载波的信道和干扰模式。 子载波分配器使用生成的种子值分配子载波。

公开(公告)号：US20070127431A1

公开(公告)日：2007-06-07

申请号：US11598027

申请日：2006-11-13

申请人： Yoo-Chang Eun ,  Jong-Han Lim

发明人： Yoo-Chang Eun ,  Jong-Han Lim

IPC分类号： H04B7/216 ,  H04L12/26

CPC分类号： H04J13/10 ,  H04B1/70756

摘要： A method and apparatus for generating a code after a random time in a communication system using an n-stage Linear Feedback Shift Register (LFSR) are provided. The method includes expressing an element indicating the current state value of the LFSR in a finite field GF(2n), performing a 2r-th power operation and a multiply operation with respect to the characteristic polynomial using the LFSR when n=rs in the GF(2n), and repeating the 2r-th power operation and the multiply operation s times to calculate a new state value of the LFSR after the random time, thereby generating the code.

摘要翻译： 提供了一种用于在使用n级线性反馈移位寄存器（LFSR）的通信系统中在随机时间之后生成代码的方法和装置。 该方法包括在有限域GF（2 S）中表示指示LFSR的当前状态值的元素，执行第2次功率运算和乘法运算 对于在GF（2 ）中的n = rs时使用LFSR的特征多项式，并且重复第2次功率运算和乘法运算s​​次 计算随机时间后的LFSR的新状态值，从而生成代码。

公开(公告)号：US20070047623A1

公开(公告)日：2007-03-01

申请号：US11511505

申请日：2006-08-29

申请人： Yoo-Chang Eun ,  Seung-Chul Hong ,  Jong-Han Lim

发明人： Yoo-Chang Eun ,  Seung-Chul Hong ,  Jong-Han Lim

IPC分类号： H04B1/00

CPC分类号： H04J13/10 ,  G06F7/584 ,  H04B1/70756

摘要： A method and apparatus are provided for generating a code by quickly computing a state of a Linear Feedback Shift Register (LFSR) in a mobile communication system, in which a code for the communication system is generated including an n-stage LFSR and operating in sleep mode and active mode set at a preset time interval from the sleep mode. Current state values of the LFSR are combined with n different mask patterns such that the current state values are shifted by {20,21, . . . ,2n−1}. A combination result is provided as a new state value of the LFSR at an arbitrary time variably set in the sleep mode. To transform a current state value of the LFSR to a new state value after an arbitrary time, the code generation method employs a square and multiply algorithm without use of mask patterns.

摘要翻译： 提供了一种用于通过在移动通信系统中快速计算线性反馈移位寄存器（LFSR）的状态来生成代码的方法和装置，其中生成包括n级LFSR并在睡眠中操作的通信系统的代码 模式和活动模式设置为从睡眠模式预设的时间间隔。 LFSR的当前状态值与n个不同的掩模图案组合，使得当前状态值偏移{2 <0> 0，2 <1> 1。 。 。 ，2-n-1}。 组合结果作为在睡眠模式下可变地设置的任意时间的LFSR的新状态值被提供。 为了在任意时间之后将LFSR的当前状态值变换为新的状态值，代码生成方法采用平方和乘法算法而不使用掩码模式。

公开(公告)号：US07940752B2

公开(公告)日：2011-05-10

申请号：US11787014

申请日：2007-04-13

申请人： Dong-Ryeol Ryu ,  Hi-Chan Moon ,  Yoo-Chang Eun

发明人： Dong-Ryeol Ryu ,  Hi-Chan Moon ,  Yoo-Chang Eun

IPC分类号： H04L12/60 ,  H04Q11/00

CPC分类号： H04B1/7117 ,  H04B2201/70709 ,  H04W52/0229 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/24 ,  Y02D70/25 ,  Y02D70/40

摘要： A rake reception apparatus for determining whether a paging channel is received in a mobile terminal using a Discontinuous Reception (DRX) mode. A searcher searches for a multi-path signal using a received signal output from a Radio Frequency (RF) part, and calculates an energy value for each hypothesis. A demodulator demodulates a Paging Indicator (PI) for a hypothesis for which an energy value calculated by the searcher exceeds a valid path threshold. A controller determines whether a paging channel is received, according to the demodulated signal output from the demodulator, and performs finger allocation using a multi-path search of the searcher if it is determined that the paging channel is transmitted.

摘要翻译： 一种用于确定在使用不连续接收（DRX）模式的移动终端中是否接收到寻呼信道的耙式接收装置。 搜索者使用从射频（RF）部分输出的接收信号来搜索多径信号，并且计算每个假设的能量值。 解调器解调寻呼指示符（PI），用于由搜索者计算的能量值超过有效路径阈值的假设。 控制器根据从解调器输出的解调信号来确定是否接收到寻呼信道，并且如果确定寻呼信道被发送，则使用搜索者的多路径搜索来执行手指分配。

公开(公告)号：US08102951B2

公开(公告)日：2012-01-24

申请号：US12260040

申请日：2008-10-28

申请人： Yoo-Chang Eun ,  In-Hyoung Kim

发明人： Yoo-Chang Eun ,  In-Hyoung Kim

IPC分类号： H04L27/06

CPC分类号： H03M13/3753 ,  H03M13/1128 ,  H03M13/2975 ,  H04L1/0036 ,  H04L1/0051

摘要： An apparatus and a method for raising a data throughput by dynamically changing the maximum number of iterative decoding times of an iteratively decodable code in a mobile communication system are provided. The apparatus includes an early stop controller for determining whether an early stop condition is satisfied during a decoding process according to a maximum number of the iterative decoding times, a Connection IDentifier (CID) controller for detecting a CID of a Media Access Control (MAC) header after the early stop, and an iteration controller for, when determining that a Protocol Data Unit (PDU) is allocated to the receiver apparatus by detecting the CID of the MAC header, resetting the maximum number of iterative decoding times after identifying a decoding block of a next PDU, and for, when the CID is not detected, resetting the maximum number of the iterative decoding times after identifying a next decoding block of the current PDU.

摘要翻译： 提供了一种用于通过动态地改变移动通信系统中的迭代可解码的迭代解码时间的最大数量来提高数据吞吐量的装置和方法。 该装置包括一个早期停止控制器，用于根据迭代解码时间的最大数量确定在解码过程期间是否满足早期停止条件，用于检测媒体访问控制（MAC）的CID的连接标识符（CID）控制器， 提前停止后的报头，以及当确定通过检测MAC报头的CID而将协议数据单元（PDU）分配给接收机设备时，迭代控制器，在识别出解码块之后重置最大迭代解码次数 并且当未检测到CID时，在识别当前PDU的下一个解码块之后重置迭代解码时间的最大数量。

公开(公告)号：US20070242641A1

公开(公告)日：2007-10-18

申请号：US11787014

申请日：2007-04-13

申请人： Dong-Ryeol Ryu ,  Hi-Chan Moon ,  Yoo-Chang Eun

发明人： Dong-Ryeol Ryu ,  Hi-Chan Moon ,  Yoo-Chang Eun

IPC分类号： H04B7/216

CPC分类号： H04B1/7117 ,  H04B2201/70709 ,  H04W52/0229 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/24 ,  Y02D70/25 ,  Y02D70/40

摘要： A rake reception apparatus for determining whether a paging channel is received in a mobile terminal using a Discontinuous Reception (DRX) mode. A searcher searches for a multi-path signal using a received signal output from a Radio Frequency (RF) part, and calculates an energy value for each hypothesis. A demodulator demodulates a Paging Indicator (PI) for a hypothesis for which an energy value calculated by the searcher exceeds a valid path threshold. A controller determines whether a paging channel is received, according to the demodulated signal output from the demodulator, and performs finger allocation using a multi-path search of the searcher if it is determined that the paging channel is transmitted.

摘要翻译： 一种用于确定在使用不连续接收（DRX）模式的移动终端中是否接收到寻呼信道的耙式接收装置。 搜索者使用从射频（RF）部分输出的接收信号来搜索多径信号，并且计算每个假设的能量值。 解调器解调寻呼指示符（PI），用于由搜索者计算的能量值超过有效路径阈值的假设。 控制器根据从解调器输出的解调信号来确定是否接收到寻呼信道，并且如果确定寻呼信道被发送，则使用搜索者的多路径搜索来执行手指分配。