公开(公告)号：US08135099B2

公开(公告)日：2012-03-13

申请号：US12127342

申请日：2008-05-27

申请人： Young Jo Bang ,  Chang Wahn Yu ,  Seung Jae Bahng ,  Dae Ho Kim ,  Youn Ok Park ,  Jee Hwan Ahn ,  Il Min Kim

发明人： Young Jo Bang ,  Chang Wahn Yu ,  Seung Jae Bahng ,  Dae Ho Kim ,  Youn Ok Park ,  Jee Hwan Ahn ,  Il Min Kim

IPC分类号： H04B1/10

CPC分类号： H04B7/0413 ,  H04B7/0854

摘要： The present invention relates to a transmission symbol detection method in a multiple antenna system. In the present invention, when a channel matrix is estimated through channel estimation, a receiving side calculates a Q matrix and an R matrix through QR decomposition that is more simplified than a typical QR decomposition from an augmented channel matrix that includes the estimated channel matrix. In addition, the receiving side detects symbols having the minimum Euclidean metric by using the two matrixes, as transmission symbols.

摘要翻译： 本发明涉及多天线系统中的发射符号检测方法。 在本发明中，当通过信道估计来估计信道矩阵时，接收侧通过QR分解来计算Q矩阵和R矩阵，其比来自包括估计信道矩阵的增强信道矩阵的典型QR分解更简化。 此外，接收端通过使用两个矩阵来检测具有最小欧几里德量度的符号作为发送符号。

公开(公告)号：US07991057B2

公开(公告)日：2011-08-02

申请号：US11667884

申请日：2005-09-07

申请人： Kyung-Yeol Sohn ,  Youn-Ok Park

发明人： Kyung-Yeol Sohn ,  Youn-Ok Park

IPC分类号： H04K1/10 ,  H04L27/28 ,  H04L27/00

CPC分类号： H04J13/10 ,  H04J13/0022 ,  H04L5/023

摘要： Disclosed is an apparatus for generating a ranging pseudo noise code used for a terminal of a portable internet system of an OFDM access scheme. The apparatus for generating ranging pseudo noise code detects a cell ID number using a preamble signal transmitted from a base station covering the terminal, detects a ranging pseudo noise code mask value using the detected cell ID number and system parameters input from the base station, and generates a ranging pseudo noise code using the detected cell ID number and the ranging pseudo noise code mask value. With the above structure, a constant initial value can be used irregardless of the cell ID number of the base station, and a desired ranging pseudo noise code can be generated as fast as possible so as to have a desired offset.

摘要翻译： 公开了一种用于生成用于OFDM接入方案的便携式因特网系统的终端的测距伪噪声码的装置。 用于产生测距伪噪声代码的装置使用从覆盖终端的基站发送的前导码信号来检测小区ID号，使用检测到的小区ID号和从基站输入的系统参数检测测距伪噪声码掩码值，以及 使用检测到的小区ID号码和测距伪噪声码掩码值，生成测距伪噪声码。 利用上述结构，无论基站的小区ID号码如何，都可以使用恒定的初始值，并且可以尽可能快地生成期望的测距伪噪声码，以便具有期望的偏移。

公开(公告)号：US20100272205A1

公开(公告)日：2010-10-28

申请号：US12766340

申请日：2010-04-23

申请人： Seungjae BAHNG ,  Junghyun KIM ,  Hoon LEE ,  Youn Ok PARK

发明人： Seungjae BAHNG ,  Junghyun KIM ,  Hoon LEE ,  Youn Ok PARK

IPC分类号： H04L1/02

CPC分类号： H04L27/02

摘要： The present invention relates to a method for detecting a signal, a device for detecting a signal, and a receiving device. A method for detecting a signal according to the present invention is a method for detecting a signal from a receiving device in a communication system including a multi-output multi-input antenna, including: estimating a channel matrix of a signal received from a plurality of receiving antennas; generating at least one channel matrix groups by aligning the channel matrix and generating at least one transmitting signal group by aligning a transmitting signal to be estimated to correspond thereto; determining a first candidate vector in consideration of all constellation points for a first layer of the at least one transmitting signal group; determining a second candidate vector in consideration of all constellation points for a second layer of the at least one transmitting signal group; generating a final candidate vector including the first candidate vector and the second candidate vector; and calculating a soft output using the final candidate vector.

摘要翻译： 本发明涉及用于检测信号的方法，用于检测信号的装置和接收装置。 根据本发明的用于检测信号的方法是一种用于在包括多输出多输入天线的通信系统中检测来自接收装置的信号的方法，包括：估计从多个输入端接收的信号的信道矩阵 接收天线; 通过对齐所述信道矩阵并生成至少一个发送信号组来产生至少一个信道矩阵组，通过对准要估计的发送信号与之相对应; 考虑到所述至少一个发射信号组的第一层的所有星座点，确定第一候选矢量; 考虑到所述至少一个发射信号组的第二层的所有星座点，确定第二候选矢量; 生成包括第一候选向量和第二候选向量的最终候选向量; 并使用最终候选向量计算软输出。

公开(公告)号：US20100246548A1

公开(公告)日：2010-09-30

申请号：US12730804

申请日：2010-03-24

申请人： Seungjae Bahng ,  Hoon Lee ,  Youn Ok Park

发明人： Seungjae Bahng ,  Hoon Lee ,  Youn Ok Park

IPC分类号： H04W4/00 ,  H04B7/00

CPC分类号： H04W72/06 ,  H04B7/0452 ,  H04B7/0857 ,  H04J11/0046 ,  H04J11/0059

摘要： A base station according to an exemplary embodiment of the present invention includes: a receiver receiving environment information of a first terminal from the first terminal positioned at a cell boundary and receiving usable resource information from a neighbor base station; a resource allocator allocating a resource to the first terminal on the basis of the usable resource information; and a transmitter transmitting information on the resource allocated to the first terminal to the neighbor base station.

摘要翻译： 根据本发明的示例性实施例的基站包括：接收机，从位于小区边界的第一终端接收第一终端的环境信息，并从相邻基站接收可用资源信息; 资源分配器，基于所述可用资源信息向所述第一终端分配资源; 以及向所述相邻基站发送关于分配给所述第一终端的资源的信息的发射机。

公开(公告)号：US07742391B2

公开(公告)日：2010-06-22

申请号：US11636809

申请日：2006-12-11

申请人： Chang-Wahn Yu ,  Youn-Ok Park

发明人： Chang-Wahn Yu ,  Youn-Ok Park

IPC分类号： H04J11/00

CPC分类号： H04L27/2657 ,  H04L27/0014 ,  H04L27/2675 ,  H04L2027/003 ,  H04L2027/0046 ,  H04L2027/0067 ,  H04L2027/0087

摘要： In a frequency offset estimating device of a subscriber station of a communication system in which a plurality of sectors are allocated to a cell, the frequency offset estimating device extracts a preamble sequence from a downlink frame signal. The frequency offset estimating device estimates a phase offset of a sector to which the subscriber station belongs among the sectors by using the preamble sequence, and calculates the autocorrelation value for the respective signals of the preamble sequence. The frequency offset estimating device compensates the autocorrelation value by using the phase offset, and estimates a frequency offset from the sum of the phase offset compensated autocorrelation values.

摘要翻译： 在将多个扇区分配给小区的通信系统的用户台的频率偏移估计装置中，频率偏移估计装置从下行链路帧信号中提取前置码序列。 频率偏移估计装置通过使用前置码序列来估计用户站所属的扇区的相位偏移，并且计算前导序列的各个信号的自相关值。 频率偏移估计装置通过使用相位偏移来补偿自相关值，并且从相位偏移补偿自相关值的和估计频率偏移。

公开(公告)号：US20100061223A1

公开(公告)日：2010-03-11

申请号：US11721136

申请日：2005-11-10

申请人： Jun-Woo Kim ,  Su-Chang Chae ,  Young-Ha Lee ,  Eon-Young Hong ,  Youn-Ok Park

发明人： Jun-Woo Kim ,  Su-Chang Chae ,  Young-Ha Lee ,  Eon-Young Hong ,  Youn-Ok Park

IPC分类号： H04J1/00 ,  H04J11/00 ,  H04L27/28 ,  H04B15/00

CPC分类号： H04L5/0044 ,  H04L5/0048 ,  H04L5/0092

摘要： A subcarrier allocating apparatus allocating data to be transmitted to a plurality of orthogonal subcarriers in an orthogonal frequency division multiplexing (OFDM) system, the apparatus including: a logical index generator (142) generating a logical index for allocating a data subcarrier to a physical index, the logical index being included with only data subcarriers and the physical index indicating a location of a substantial subcarrier within a symbol; an intermediate index converter (144) converting the logical index into an intermediate index by performing a given operation on the generated logical index and a pilot location constant; and a physical index converter (146) converting the intermediate index into a physical index based on the number of data subcarriers on the left and right sides of a null subcarrier for insertion of a guard interval formed by the null subcarrier.

摘要翻译： 一种子载波分配装置，在正交频分复用（OFDM）系统中分配要发送到多个正交子载波的数据，该装置包括：逻辑索引发生器，产生用于将数据子载波分配到物理索引的逻辑索引 逻辑索引仅包括数据子载波，物理索引指示符号内的实质子载波的位置; 中间索引转换器（144），通过对所生成的逻辑索引和导频位置常数执行给定的操作将逻辑索引转换成中间索引; 以及物理索引转换器（146），其基于用于插入由所述无效副载波形成的保护间隔的无效副载波的左侧和右侧的数据子载波的数量将所述中间索引转换为物理索引。

公开(公告)号：US20100046662A1

公开(公告)日：2010-02-25

申请号：US11721156

申请日：2005-10-26

申请人： Hyeong-Sook Park ,  Youn-Ok Park

发明人： Hyeong-Sook Park ,  Youn-Ok Park

IPC分类号： H04L27/00

CPC分类号： H04L27/2624

摘要： The present invention relates to a digital clipping method for reducing a high peak-to-average power ratio (PAPR) of a transmission signal in a transmitter of an orthogonal frequency division multiplexing access (OFDMA) system. In the method, a) the transmission signal to be digitally clipped is divided into real and imaginary parts, b) magnitudes of the real and imaginary part signals are divided into a plurality clipping levels, and c) the transmission signal is respectively clipped by comparing the real and imaginary part signals with the plurality of clipping levels while allowing phase errors. In c), a plurality of comparators is used to respectively compare the real and imaginary parts of the complex number transmission signal with the plurality of clipping levels.

摘要翻译： 本发明涉及一种用于降低正交频分多路复用接入（OFDMA）系统的发射机中的发送信号的高峰值与平均功率比（PAPR）的数字削波方法。 在该方法中，a）要被数字剪切的传输信号被划分成实部和虚部，b）实部和虚部信号的大小被分成多个削波电平，c）通过比较来分别传输发送信号 具有多个限幅电平的实部和虚部信号同时允许相位误差。 在c）中，使用多个比较器来分别比​​较复数传输信号的实部和虚部与多个限幅电平。

公开(公告)号：US07646749B2

公开(公告)日：2010-01-12

申请号：US11636812

申请日：2006-12-11

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

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

IPC分类号： H04Q7/00

CPC分类号： H04B7/0617 ,  H04L5/023 ,  H04L27/2608 ,  Y02D70/142 ,  Y02D70/444

摘要： A downlink beamforming apparatus and a transmission apparatus including the same includes a subcarrier based user identifier for dividing subcarriers according to users, a beamforming weight buffer for storing first beamforming weights for the subcarriers by each of transmitting antennas, an interpolator for outputting second beamforming weights for each transmitting antenna by interpolating the first beamforming weights, and a signal reproducer for reproducing the signal for each transmitting antenna. Subcarriers are allocated to the signal by each user; and a complex multiplier multiplies the signal for each transmitting antenna by the second beamforming weights.

摘要翻译： 下行链路波束成形装置及其发送装置包括：用于根据用户分割子载波的基于子载波的用户标识符;波束形成权重缓冲器，用于存储每个发送天线的子载波的第一波束形成权重;内插器，用于输出第二波束形成权重 通过内插第一波束形成权重的每个发射天线，以及用于再现每个发射天线的信号的信号再现器。 子载波由每个用户分配给信号; 并且复数乘法器将每个发射天线的信号乘以第二波束形成权重。

公开(公告)号：US20090225904A1

公开(公告)日：2009-09-10

申请号：US11721155

申请日：2005-11-09

申请人： Young-Ha Lee ,  Youn-Ok Park

发明人： Young-Ha Lee ,  Youn-Ok Park

IPC分类号： H04L27/22

CPC分类号： H04L27/22 ,  H04L1/0026 ,  H04L1/18 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2647

摘要： A base station demodulator according to the exemplary embodiment of the present invention includes a vector index demodulator, and a channel value detector. The vector index demodulator demodulates CQI or ARQ ACK/NACK channels by multiplying QPSK modulation signals transmitted as m subcarriers in a tile by m conjugate complexes corresponding to the m subcarriers, and determines the greatest value of the demodulation results as a vector index. The channel value detector inputs n vector indexes demodulated by the vector index demodulator to a first shift register, inputs n subsequent vector indexes to a second shift register, and detects a channel value for the CQI or the ARQ ACK/NACK by repeating the above vector index input to the first and second shift registers m-times.

摘要翻译： 根据本发明的示例性实施例的基站解调器包括矢量索引解调器和信道值检测器。 矢量索引解调器通过将通过m个子载波发送的QPSK调制信号乘以与m个子载波相对应的m个共轭复合来解调CQI或ARQ ACK / NACK信道，并将解调结果的最大值确定为向量索引。 信道值检测器将由向量索引解调器解调的n个向量索引输入到第一移位寄存器，将n个后续向量索引输入到第二移位寄存器，并通过重复上述向量来检测CQI或ARQ ACK / NACK的信道值 索引输入到第一和第二移位寄存器m次。

公开(公告)号：US20090141786A1

公开(公告)日：2009-06-04

申请号：US12177511

申请日：2008-07-22

申请人： Hyeong Sook PARK ,  Jun-Woo KIM ,  Eon Young HONG ,  Youn Ok PARK

发明人： Hyeong Sook PARK ,  Jun-Woo KIM ,  Eon Young HONG ,  Youn Ok PARK

IPC分类号： H04B17/00 ,  H04L27/26

CPC分类号： H04L27/2647 ,  H04B17/336 ,  H04L27/2662

摘要： The present invention relates an apparatus and method of estimating a signal-to-noise ratio (SNR) of a received signal when the received signal has a timing offset. An apparatus for estimating a signal-to-noise ratio (SNR) according to an exemplary embodiment of the present invention includes a fast Fourier transform (FFT) unit that performs a fast Fourier transform on a received signal to convert the received signal into a frequency domain signal; a preamble selector that extracts a preamble from the frequency domain signal; a correlator that correlates the preamble to a preamble reference signal generated by a receiver to calculate a correlation value; an entire power estimator that calculates entire power; a noise power estimator that applies a differential demodulation method to the correlation value to remove a timing offset and calculate noise power; and an estimating unit that uses the entire power and the noise power to estimate the signal-to-noise ratio (SNR).

摘要翻译： 本发明涉及一种当接收信号具有定时偏移量时估计接收信号的信噪比（SNR）的装置和方法。 根据本发明的示例性实施例的用于估计信噪比（SNR）的装置包括对接收信号执行快速傅里叶变换的快速傅里叶变换（FFT）单元，以将接收到的信号转换成频率 域信号 前导码选择器，从所述频域信号中提取前同步码; 相关器，其将所述前导码与由接收器生成的前导码参考信号相关联，以计算相关值; 整个功率估计器，用于计算整个功率; 噪声功率估计器，其对所述相关值应用差分解调方法以去除定时偏移并计算噪声功率; 以及使用整个功率和噪声功率来估计信噪比（SNR）的估计单元。