公开(公告)号：US08451772B2

公开(公告)日：2013-05-28

申请号：US12658650

申请日：2010-02-12

申请人： Young-Ky Kim ,  Jae-Ho Jeon ,  Il-Whan Kim ,  Seung-Joo Maeng

发明人： Young-Ky Kim ,  Jae-Ho Jeon ,  Il-Whan Kim ,  Seung-Joo Maeng

IPC分类号： H04B7/212

CPC分类号： H04W16/14 ,  H04W72/0453

摘要： A base station includes a center frequency setting unit, a local oscillator, a baseband processor, and an RF processor. In the event of a frequency band change, the center frequency setting unit sets a center frequency of a use frequency channel to have a predetermined offset value with respect to a center frequency before the frequency band change. The local oscillator generates an LO frequency signal according to the center frequency set by the center frequency setting unit. The baseband processor generates a downlink baseband signal. The RF processor uses the LO frequency signal to convert the downlink baseband signal into an RF signal prior to transmission.

摘要翻译： 基站包括中心频率设置单元，本地振荡器，基带处理器和RF处理器。 在频带变化的情况下，中心频率设定单元将频率信道的中心频率设定为相对于频带变化前的中心频率具有规定的偏移值。 本地振荡器根据由中心频率设定单元设定的中心频率产生LO频率信号。 基带处理器生成下行链路基带信号。 RF处理器使用LO频率信号在传输之前将下行链路基带信号转换成RF信号。

公开(公告)号：US20050192058A1

公开(公告)日：2005-09-01

申请号：US11059560

申请日：2005-02-17

申请人： Dae-Kwon Jung ,  Young-Ky Kim ,  Jae-Ho Jeon ,  Ha-Young Yang ,  Myung-Kwang Byun ,  Hee-Kwang Lee ,  Chang-Soo Park

发明人： Dae-Kwon Jung ,  Young-Ky Kim ,  Jae-Ho Jeon ,  Ha-Young Yang ,  Myung-Kwang Byun ,  Hee-Kwang Lee ,  Chang-Soo Park

IPC分类号： H04B7/06 ,  H04B7/08 ,  H04W16/24 ,  H04W16/28 ,  H04M1/00

CPC分类号： H04W16/28 ,  H04B7/0615 ,  H04B7/086 ,  H04W16/24

摘要： An apparatus and method are provided for managing sectors in a transmission operation of a base station including a smart antenna system forming directional beams using a plurality of antenna elements. The apparatus and method comprise determining whether a call connected to a mobile station is a voice call or a data call; multiplying a transmission signal to the mobile station by predetermined complex weight vectors selected according to the call type; and forming a transmission beam for a corresponding sector by summing the multiplied values according to the antenna elements.

摘要翻译： 提供了一种用于管理包括使用多个天线元件形成定向波束的智能天线系统的基站的传输操作中的扇区的装置和方法。 该装置和方法包括确定连接到移动台的呼叫是否是语音呼叫或数据呼叫; 通过根据呼叫类型选择的预定复权重向量将传输信号与移动台相乘; 以及通过根据所述天线元素对相乘的值求和来形成对应扇区的发射波束。

公开(公告)号：US08761680B2

公开(公告)日：2014-06-24

申请号：US12397131

申请日：2009-03-03

申请人： Ik-Beom Lee ,  Ha-Young Yang ,  Jae-Ho Jeon ,  Sung-Kwon Jo

发明人： Ik-Beom Lee ,  Ha-Young Yang ,  Jae-Ho Jeon ,  Sung-Kwon Jo

IPC分类号： H04W24/10 ,  H04W72/08

CPC分类号： H04W24/10 ,  H04W72/08

摘要： A method for measuring channel quality of a Base Station (BS) by using a ranging signal in a broadband wireless communication system is provided. The method includes estimating a time offset of the ranging signal received through a ranging channel, measuring channel quality by using the ranging signal including the time offset, determining whether distortion occurs in the measured channel quality by using the time offset, and compensating for distortion of the measured channel quality.

摘要翻译： 提供了一种通过在宽带无线通信系统中使用测距信号来测量基站（BS）的信道质量的方法。 该方法包括估计通过测距信道接收的测距信号的时间偏移，通过使用包括时间偏移的测距信号来测量信道质量，通过使用时间偏移来确定在所测量的信道质量中是否发生失真，以及补偿 测量的通道质量。

公开(公告)号：US20090227247A1

公开(公告)日：2009-09-10

申请号：US12380903

申请日：2009-03-05

申请人： Myung-Kwang Byun ,  Jeong-Tae Oh ,  Jae-Ho Jeon ,  Sung-Kwon Jo

发明人： Myung-Kwang Byun ,  Jeong-Tae Oh ,  Jae-Ho Jeon ,  Sung-Kwon Jo

IPC分类号： H04W36/20 ,  H04B15/00 ,  H04W24/00

CPC分类号： H04L1/0048 ,  H04B1/1027 ,  H04B17/345 ,  H04L25/0328 ,  H04L27/2647

摘要： An apparatus and method for eliminating interference in a base station (BS) of a communication system. A first BS receives a first reception signal from a first mobile station located in a cell of the first base station. A second base station being adjacent to the first base station delivers decoding information of a second reception signal to the first base station, the second reception signal received from a second mobile station located in a cell of the second base station. The first BS determines whether an error exists on the second reception signal, based on the decoding information and re-generates an interference signal using the decoding information of the second reception signal when no error exists in the second reception signal, and performing interference elimination on the first reception signal using the re-generated interference signal.

摘要翻译： 一种用于消除通信系统的基站（BS）中的干扰的装置和方法。 第一BS从位于第一基站的小区中的第一移动台接收第一接收信号。 与第一基站相邻的第二基站向第一基站传送第二接收信号的解码信息，从位于第二基站的小区的第二移动台接收的第二接收信号。 第一BS基于解码信息确定第二接收信号是否存在错误，并且当在第二接收信号中没有错误时，使用第二接收信号的解码信息重新产生干扰信号，并对 第一接收信号使用重新产生的干扰信号。

公开(公告)号：US20080182543A1

公开(公告)日：2008-07-31

申请号：US12020162

申请日：2008-01-25

申请人： Ha-Young YANG ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Sung-Kwon Jo ,  Seung-Joo Maeng ,  Byung-Joon Park

发明人： Ha-Young YANG ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Sung-Kwon Jo ,  Seung-Joo Maeng ,  Byung-Joon Park

IPC分类号： H04B1/10

CPC分类号： H04B1/1027

摘要： Disclosed is a method for receiving a signal by a receiver in a communication system, the method includes receiving a signal; estimating a first noise value by using a reference signal included in the received signal; estimating a second noise value by using at least one subcarrier which has been unused for a transmission of data and the reference signal; and when a difference between the estimated first noise value and the estimated second noise value is greater than a threshold value, demodulating the data by using an interference removal algorithm.

摘要翻译： 公开了一种在通信系统中由接收机接收信号的方法，该方法包括：接收信号; 通过使用包括在接收信号中的参考信号来估计第一噪声值; 通过使用未被用于数据传输和参考信号的至少一个子载波来估计第二噪声值; 并且当估计的第一噪声值和估计的第二噪声值之间的差大于阈值时，通过使用干扰去除算法对数据进行解调。

公开(公告)号：US07881410B2

公开(公告)日：2011-02-01

申请号：US11477040

申请日：2006-06-28

申请人： Jae-Hyok Lee ,  Evgeny Gontcharov ,  Jae-Ho Jeon ,  Seung-Joo Maeng

发明人： Jae-Hyok Lee ,  Evgeny Gontcharov ,  Jae-Ho Jeon ,  Seung-Joo Maeng

IPC分类号： H04L27/06

CPC分类号： H04L5/023 ,  H04L27/2608

摘要： Disclosed is a method for detecting a user in a communication system. The method includes selecting i ranging sub-carrier signals among k sub-carrier signals upon which a k-point fast Fourier transform (FFT), has been performed multiplying the i ranging sub-carrier signals by a ranging code, performing k-point inverse fast Fourier transform (IFFT) on the i ranging sub-carrier signals multiplied by the ranging code, and (k-i) 0s, detecting a power of each of the IFFT-processed k point signals, estimating a power of a desired received signal and a power of an interference signal by using powers of the k point signals according to a predetermined scheme, and detecting a user depending on the power of the desired received signal and the power of the interference signal.

摘要翻译： 公开了一种用于在通信系统中检测用户的方法。 该方法包括：在已经执行了k点快速傅立叶变换（FFT）的k个子载波信号中选择i个测距子载波信号，其中i个测距子载波信号乘以测距码，执行k点反相 在i测距子载波信号乘以测距码和（ki）0s的快速傅里叶变换（IFFT）中，检测每个IFFT处理的k点信号的功率，估计所需接收信号的功率和 通过使用根据预定方案的k点信号的功率的干扰信号的功率，以及根据期望的接收信号的功率和干扰信号的功率来检测用户。

公开(公告)号：US07483497B2

公开(公告)日：2009-01-27

申请号：US11212928

申请日：2005-08-29

申请人： Jeong-Tae Oh ,  Jae-Hyok Lee ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

发明人： Jeong-Tae Oh ,  Jae-Hyok Lee ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

IPC分类号： H04L27/22

CPC分类号： H04L27/38 ,  H04L1/005 ,  H04L25/067

摘要： A method and apparatus are provided for calculating a log-likelihood ratio (LLR) for decoding in a receiver for a mobile communication system, wherein the method and apparatus determine selection bits for distinguishing four quadrants in a constellation representing signal points of transmission symbols, determine domain bits for distinguishing the signal points in each domain of the four quadrants according to a modulation order of the transmission symbols, repeat an operation of dividing a received signal into a real component and an imaginary component according to the number of determined domain bits, calculate and origin-shift absolute values of the real component and the imaginary component, and calculate LLRs for the selection bits. Further, the method and apparatus can subsequently calculate LLRs for corresponding domain bits each time the origin-shifted received signal is received.

摘要翻译： 提供一种用于计算用于移动通信系统的接收机中的解码的对数似然比（LLR）的方法和装置，其中所述方法和装置确定用于区分表示传输符号的信号点的星座中的四个象限的选择位，确定 用于根据传输符号的调制顺序区分四个象限的每个域中的信号点的域比特，根据确定的域比特的数量重复将接收信号划分为实数分量和虚分量的操作，计算 和原始分量和虚分量的原点偏移绝对值，并计算选择位的LLR。 此外，该方法和装置可以随后在每次接收到原点移位的接收信号时计算相应的域比特的LLR。

公开(公告)号：US07391822B2

公开(公告)日：2008-06-24

申请号：US11126253

申请日：2005-05-11

申请人： Yoo-Seung Song ,  Jae-Hyok Lee ,  Seung-Hwan Lee ,  Ki-Hwan Hwang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

发明人： Yoo-Seung Song ,  Jae-Hyok Lee ,  Seung-Hwan Lee ,  Ki-Hwan Hwang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

IPC分类号： H04L25/49

CPC分类号： H03F1/3247 ,  H04B7/2681 ,  H04B2201/709709 ,  H04W56/00

摘要： A method and apparatus for estimating a signal delay between a transmission signal which is to be processed in a predetermined communication device of a mobile communication system, and a feedback signal. Each of the transmission and feedback signals is sampled for a predetermined length, and signal power magnitude values are computed in a sample unit and are stored in first and second memory blocks. Mean squared error (MSE) values are computed from a plurality of samples, while a start sample position of one block is shifted on a basis of a start sample position of the other block. A sample delay value is estimated from a start sample position of the one block with a smallest MSE value such that a sample delay between a transmission signal and a feedback signal is closely estimated regardless of a frequency allocation (FA) value.

摘要翻译： 一种用于估计在移动通信系统的预定通信设备中要处理的传输信号与反馈信号之间的信号延迟的方法和装置。 每个发送和反馈信号被采样预定的长度，并且信号功率幅度值以采样单元计算并存储在第一和第二存储器块中。 从多个样本计算均方误差（MSE）值，同时基于另一个块的起始样本位置移位一个块的起始采样位置。 从具有最小MSE值的一个块的开始采样位置估计采样延迟值，使得无论频率分配（FA）值如何，传输信号和反馈信号之间的采样延迟被严格估计。

公开(公告)号：US20060045211A1

公开(公告)日：2006-03-02

申请号：US11212928

申请日：2005-08-29

申请人： Jeong-Tae Oh ,  Jae-Hyok Lee ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

发明人： Jeong-Tae Oh ,  Jae-Hyok Lee ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

IPC分类号： H04L27/22

CPC分类号： H04L27/38 ,  H04L1/005 ,  H04L25/067

摘要： A method and apparatus are provided for calculating a log-likelihood ratio (LLR) for decoding in a receiver for a mobile communication system, wherein the method and apparatus determine selection bits for distinguishing four quadrants in a constellation representing signal points of transmission symbols, determine domain bits for distinguishing the signal points in each domain of the four quadrants according to a modulation order of the transmission symbols, repeat an operation of dividing a received signal into a real component and an imaginary component according to the number of determined domain bits, calculate and origin-shift absolute values of the real component and the imaginary component, and calculate LLRs for the selection bits. Further, the method and apparatus can subsequently calculate LLRs for corresponding domain bits each time the origin-shifted received signal is received.

公开(公告)号：US20100208717A1

公开(公告)日：2010-08-19

申请号：US12658650

申请日：2010-02-12

申请人： Young-Ky Kim ,  Jae-Ho Jeon ,  Il-Whan Kim ,  Seung-Joo Maeng

发明人： Young-Ky Kim ,  Jae-Ho Jeon ,  Il-Whan Kim ,  Seung-Joo Maeng

IPC分类号： H04B7/216 ,  H04B7/00

CPC分类号： H04W16/14 ,  H04W72/0453

摘要： A base station includes a center frequency setting unit, a local oscillator, a baseband processor, and an RF processor. In the event of a frequency band change, the center frequency setting unit sets a center frequency of a use frequency channel to have a predetermined offset value with respect to a center frequency before the frequency band change. The local oscillator generates an LO frequency signal according to the center frequency set by the center frequency setting unit. The baseband processor generates a downlink baseband signal. The RF processor uses the LO frequency signal to convert the downlink baseband signal into an RF signal prior to transmission.

摘要翻译： 基站包括中心频率设置单元，本地振荡器，基带处理器和RF处理器。 在频带变化的情况下，中心频率设定单元将频率信道的中心频率设定为相对于频带变化前的中心频率具有规定的偏移值。 本地振荡器根据由中心频率设定单元设定的中心频率产生LO频率信号。 基带处理器生成下行链路基带信号。 RF处理器使用LO频率信号在传输之前将下行链路基带信号转换成RF信号。