公开(公告)号：US08275053B2

公开(公告)日：2012-09-25

申请号：US11931188

申请日：2007-10-31

申请人： Young-Jo Bang ,  Kyung-Yeol Sohn ,  Youn-Ok Park

发明人： Young-Jo Bang ,  Kyung-Yeol Sohn ,  Youn-Ok Park

IPC分类号： H04L27/28

CPC分类号： H04L25/0236 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0222 ,  H04L27/261

摘要： The present invention relates to an apparatus and method of estimating a channel based on a channel delay spread in a mobile communication system. Pilot subcarriers are inserted between data subcarriers at predetermined intervals to estimate a channel at locations of the pilot subcarriers. An approximate channel delay spread value is estimated by using an autocorrelation value of a pilot signal. Then, a channel for data subcarriers between the pilot subcarriers is estimated by using a Wiener finite impulse response (FIR) filter that has a separate coefficient according to the estimated delay spread value. Accordingly, by changing the Wiener FIR filter coefficient according to the delay spread value of the channel, it is possible to estimate the channel so as to be adaptive for a change of the channel over time. Since the filter coefficients, which are calculated in advance, are used, it is possible to reduce the amount of calculation required when calculating the filter coefficients. As a result, an apparatus for estimating a channel can be easily achieved.

摘要翻译： 本发明涉及一种基于移动通信系统中的信道延迟扩展来估计信道的装置和方法。 导频子载波以预定间隔插入数据子载波之间，以估计导频子载波位置处的信道。 通过使用导频信号的自相关值来估计近似信道延迟扩展值。 然后，通过使用根据估计的延迟扩展值具有单独系数的维纳有限脉冲响应（FIR）滤波器来估计导频子载波之间的数据子载波的信道。 因此，通过根据信道的延迟扩展值改变维纳FIR滤波器系数，可以估计信道，以适应随时间变化的信道。 由于使用预先计算的滤波器系数，因此可以减少计算滤波器系数时所需的计算量。 结果，可以容易地实现用于估计通道的装置。

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。

公开(公告)号：US20090154540A1

公开(公告)日：2009-06-18

申请号：US12212433

申请日：2008-09-17

申请人： Chang Wahn YU ,  Kyung-Yeol SOHN ,  Hyuk Jun OH ,  Youn Ok PARK

发明人： Chang Wahn YU ,  Kyung-Yeol SOHN ,  Hyuk Jun OH ,  Youn Ok PARK

IPC分类号： H04B3/46

CPC分类号： H04L25/0244 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0228

摘要： The present invention relates to a method and apparatus for estimating a channel in a mobile communication network. In particular, the present invention relates to a method of estimating a channel under a channel environment where interference between neighboring base stations exists in a mobile communication network using an orthogonal frequency division multiplexing (OFDM) method. In order to estimate a channel, one cluster is divided into two sub-clusters, and pilot sub-carrier signals included in at least one sub-cluster in an OFDM symbol direction are used. Therefore, it is possible to further improve performance as compared to a method of estimating a channel by using pilot sub-carriers included in one cluster.

摘要翻译： 本发明涉及一种用于估计移动通信网络中的信道的方法和装置。 具体地说，本发明涉及一种使用正交频分复用（OFDM）方法估计在移动通信网络中存在相邻基站之间的干扰的信道环境下的信道的方法。 为了估计信道，一个簇被划分成两个子簇，并且使用包括在OFDM符号方向上的至少一个子簇中的导频子载波信号。 因此，与通过使用包括在一个簇中的导频子载波来估计信道的方法相比，可以进一步提高性能。

公开(公告)号：US20090135964A1

公开(公告)日：2009-05-28

申请号：US12141382

申请日：2008-06-18

申请人： Seung Jae Bahng ,  Jae Kwon Kim ,  Hoon Heo ,  Hyun Myung Wu ,  Youn Ok Park ,  Dae Ho Kim ,  Kyung Yeol Sohn ,  Chang Wahn Yu ,  Jun-Woo Kim ,  Eon Young Hong

发明人： Seung Jae Bahng ,  Jae Kwon Kim ,  Hoon Heo ,  Hyun Myung Wu ,  Youn Ok Park ,  Dae Ho Kim ,  Kyung Yeol Sohn ,  Chang Wahn Yu ,  Jun-Woo Kim ,  Eon Young Hong

IPC分类号： H03D1/00

CPC分类号： H04L1/0054

摘要： The present invention relates to a method of calculating a log-likelihood ratio and a method of detecting a transmission signal. According to the present invention, when a transmission symbol candidate vector is detected on the basis of a received signal, a threshold value and an ML metric of each transmission symbol candidate vector are calculated and the ML metric that is larger than the threshold value is updated by the threshold value. Further, a log-likelihood ratio of the transmission signal bit is calculated using the updated ML metric and the threshold value, and a transmission signal is detected using the log-likelihood ratio.

摘要翻译： 本发明涉及计算对数似然比的方法和检测发送信号的方法。 根据本发明，当基于接收信号检测到发送符号候选向量时，计算每个发送符号候选向量的阈值和ML度量，并且更新大于阈值的ML度量 通过阈值。 此外，使用更新的ML度量和阈值来计算发送信号比特的对数似然比，并且使用对数似然比来检测发送信号。

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。

公开(公告)号：US20080287078A1

公开(公告)日：2008-11-20

申请号：US12095275

申请日：2006-12-08

申请人： Dae-Ho Kim ,  Jun-Woo Kim ,  Kyung-Yeol Sohn ,  Hyeong-Sook Park ,  Youn-Ok Park

发明人： Dae-Ho Kim ,  Jun-Woo Kim ,  Kyung-Yeol Sohn ,  Hyeong-Sook Park ,  Youn-Ok Park

IPC分类号： H04B1/16

CPC分类号： H04W52/10 ,  H04L27/2601 ,  H04W52/245 ,  H04W52/52

摘要： A terminal of a communication system includes a power amplifier, an open-loop power controller, a gain controller, a modulator, and a digital/analog converter. The power amplifier amplifies transmission power of a transmission signal. The open-loop power controller measures a received signal strength to control the transmission power, and increases a gain of the power amplifier according to the received signal strength. The gain controller sets a power concentration gain and applies the power concentration gain to the transmission signal when the gain of the power amplifier is maximized. The modulator modulates the transmission signal. The digital/analog converter converts an input signal to an analog signal. The gain controller applies the power concentration gain to the trans mission signal modulated by the modulator, and transmits the power concentration gain to the digital/analog converter.

摘要翻译： 通信系统的终端包括功率放大器，开环功率控制器，增益控制器，调制器和数/模转换器。 功率放大器放大发送信号的发送功率。 开环功率控制器测量接收信号强度以控制发射功率，并根据接收信号强度增加功率放大器的增益。 增益控制器设置功率集中增益，当功率放大器的增益最大化时，将功率集中增益应用于传输信号。 调制器调制发送信号。 数字/模拟转换器将输入信号转换为模拟信号。 增益控制器将功率集中增益应用于由调制器调制的传输信号，并将功率集中增益传输到数/模转换器。

公开(公告)号：US20080137788A1

公开(公告)日：2008-06-12

申请号：US11931188

申请日：2007-10-31

申请人： Young-Jo BANG ,  Kyung-Yeol SOHN ,  Youn-Ok PARK

发明人： Young-Jo BANG ,  Kyung-Yeol SOHN ,  Youn-Ok PARK

IPC分类号： H04B1/10

CPC分类号： H04L25/0236 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0222 ,  H04L27/261

摘要： The present invention relates to an apparatus and method of estimating a channel based on a channel delay spread in a mobile communication system. Pilot subcarriers are inserted between data subcarriers at predetermined intervals to estimate a channel at locations of the pilot subcarriers. An approximate channel delay spread value is estimated by using an autocorrelation value of a pilot signal. Then, a channel for data subcarriers between the pilot subcarriers is estimated by using a Wiener finite impulse response (FIR) filter that has a separate coefficient according to the estimated delay spread value. Accordingly, by changing the Wiener FIR filter coefficient according to the delay spread value of the channel, it is possible to estimate the channel so as to be adaptive for a change of the channel over time. Since the filter coefficients, which are calculated in advance, are used, it is possible to reduce the amount of calculation required when calculating the filter coefficients. As a result, an apparatus for estimating a channel can be easily achieved.

摘要翻译： 本发明涉及一种基于移动通信系统中的信道延迟扩展来估计信道的装置和方法。 导频子载波以预定间隔插入数据子载波之间，以估计导频子载波位置处的信道。 通过使用导频信号的自相关值来估计近似信道延迟扩展值。 然后，通过使用根据估计的延迟扩展值具有单独系数的维纳有限脉冲响应（FIR）滤波器来估计导频子载波之间的数据子载波的信道。 因此，通过根据信道的延迟扩展值改变维纳FIR滤波器系数，可以估计信道，以适应随时间变化的信道。 由于使用预先计算的滤波器系数，因此可以减少计算滤波器系数时所需的计算量。 结果，可以容易地实现用于估计通道的装置。

公开(公告)号：US20070286088A1

公开(公告)日：2007-12-13

申请号：US11667641

申请日：2005-10-26

申请人： Kyung-Yeol Sohn ,  Youn-Ok Park

发明人： Kyung-Yeol Sohn ,  Youn-Ok Park

IPC分类号： H04L12/26 ,  H04L12/46

CPC分类号： H04L1/0041 ,  H04L1/0061 ,  H04L69/32

摘要： An inspection device of a physical layer module connected between a terminal transmitting an Internet Protocol (IP)-packet and a physical layer module, the inspection device including an interface transmitting/receiving the IP-packet; a destination MAC address analyzing unit analyzing a destination MAC address to which the IP-packet transmitted from the interface is to be transmitted; a physical layer-packet/physical layer-frame generator converting the IP-packet and generating a physical layer-frame with a control header and an error-detecting code attached; a physical layer-frame transceiving unit transmitting/receiving a physical layer-frame to/from the physical layer module; and an IP-packet generator receiving a physical layer-frame with a control header and an error-detecting code attached from the physical layer module, determining the physical layer module based on the control header and the error-detecting code, converting the physical layer-frame into an IP-packet, and transmitting the IP-packet to the interface.

摘要翻译： 连接在发送因特网协议（IP）包的终端和物理层模块的终端之间的物理层模块的检查装置，所述检查装置包括发送/接收所述IP包的接口; 目的地MAC地址分析单元，对从所述接口发送的所述IP包的所述目的地MAC地址进行分析; 物理层分组/物理层帧生成器转换IP分组并且生成具有附加的控制报头和检错码的物理层帧; 物理层帧收发单元向物理层模块发送/接收物理层帧; 以及从物理层模块接收具有控制头和物理层的物理层帧的IP包发生器，基于控制头和检错码确定物理层模块，转换物理层 帧转换成IP包，并将IP包发送到接口。

公开(公告)号：US20070147537A1

公开(公告)日：2007-06-28

申请号：US11635475

申请日：2006-12-07

申请人： Yong-Su Lee ,  Youn-Ok Bang ,  Young-Jo Bang ,  Kyung-Yeol Sohn ,  Jae-Gun Jung

发明人： Yong-Su Lee ,  Youn-Ok Bang ,  Young-Jo Bang ,  Kyung-Yeol Sohn ,  Jae-Gun Jung

IPC分类号： H04L1/02

CPC分类号： H01Q1/246 ,  H01Q3/267 ,  H04B17/14 ,  H04L27/2626

摘要： In a calibration apparatus in a communication system, a modulation unit calculates a reference signal by modulating a downlink signal, and a digital Intermediate Frequency (IF) unit converts the reference signal to an intermediate frequency signal. An up-converter converts the intermediate frequency signal to a Radio Frequency (RF) signal, and a down-converter generates a received signal for each of the paths from the RF signal to be transmitted through each path. A calibrator calculates a correction value for each path and a delay value by using the reference signal and the received signal for each path.

摘要翻译： 在通信系统中的校准装置中，调制单元通过调制下行链路信号来计算参考信号，并且数字中频（IF）单元将参考信号转换为中频信号。 上变频器将中频信号转换成射频（RF）信号，下变频器从RF信号中产生每个路径的接收信号，以通过每个路径传输。 校准器通过使用参考信号和每个路径的接收信号来计算每个路径的校正值和延迟值。

公开(公告)号：US20070133460A1

公开(公告)日：2007-06-14

申请号：US11636814

申请日：2006-12-11

申请人： Kyung-Yeol Sohn ,  Hyeong-Sook Park ,  Youn-Ok Park

发明人： Kyung-Yeol Sohn ,  Hyeong-Sook Park ,  Youn-Ok Park

IPC分类号： H04Q7/00 ,  H04L12/28

CPC分类号： H04B17/318

摘要： Disclosed herein is a base station that extracts a ranging channel signal from a received signal partially correlates each of a plurality of ranging channel signals and each of ranging codes according to ranging modes, and selects a ranging channel signal greater than a first threshold value, the plurality of ranging channel signals being signals according to plurality of time delays of a ranging channel signal. In addition, the base station correlates each of the selected ranging channel signal and each of corresponding ranging code, selects a ranging channel signal having the maximum correlation value, and estimates receiving power by using a time delay corresponding to the selected ranging channel signal.

摘要翻译： 本文公开了一种从接收信号中提取测距信道信号的基站，根据测距模式对多个测距信道信号和测距码中的每一个进行部分相关，并选择大于第一阈值的测距信道信号， 多个测距信道信号是根据测距信道信号的多个时间延迟的信号。 此外，基站将所选择的测距信道信号和每个对应的测距码相关，选择具有最大相关值的测距信道信号，并且通过使用与所选择的测距信道信号相对应的时间延迟来估计接收功率。