公开(公告)号：US20120093261A1

公开(公告)日：2012-04-19

申请号：US13273423

申请日：2011-10-14

申请人： Jun Woo Kim ,  Jung Pil Choi ,  Hyeong Sook Park ,  Eon Young Hong ,  Youn Ok Park

发明人： Jun Woo Kim ,  Jung Pil Choi ,  Hyeong Sook Park ,  Eon Young Hong ,  Youn Ok Park

IPC分类号： H04L27/06 ,  H04L27/00

CPC分类号： H04L5/0007 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2627

摘要： Disclosed herein are a method and an apparatus for transmitting a downlink control signal in a wireless communication system. The apparatus for transmitting a downlink control signal includes: a preamble symbol generator generating preamble orthogonal frequency division multiplexing (OFDM) symbols based on a first pilot pattern among pilot patterns for each of the plurality of transmit antennas; a midamble symbol generator generating midamble OFDM symbols based a second pilot pattern excluding the first pilot pattern from the pilot patterns for each of the plurality of transmit antennas; an IFFT unit performing inverse fast Fourier transform (IFFT) for each transmit antenna on the preamble OFDM symbol and the midamble OFDM symbol; and a plurality of transmit antennas transmitting the preamble OFDM symbols and the midamble OFDM symbols.

摘要翻译： 这里公开了一种用于在无线通信系统中发送下行链路控制信号的方法和装置。 用于发送下行链路控制信号的装置包括：前导码符号生成器，用于在多个发送天线中的每一个的导频模式中基于第一导频模式生成前导码正交频分复用（OFDM）符号; 基于针对所述多个发射天线中的每一个的导频模式，基于不包括所述第一导频模式的第二导频模式生成中间码OFDM符号的中间码符号发生器; IFFT单元对前导OFDM符号和中间码OFDM符号上的每个发射天线进行快速傅立叶逆变换（IFFT）; 以及发送前导OFDM符号和中间码OFDM符号的多个发送天线。

公开(公告)号：US08724687B2

公开(公告)日：2014-05-13

申请号：US13441212

申请日：2012-04-06

申请人： Young Jo Bang ,  Hyeong Sook Park ,  Eon Young Hong ,  Kyung Yeol Sohn ,  Jun Woo Kim ,  Youn Ok Park ,  Jae Kwon Kim

发明人： Young Jo Bang ,  Hyeong Sook Park ,  Eon Young Hong ,  Kyung Yeol Sohn ,  Jun Woo Kim ,  Youn Ok Park ,  Jae Kwon Kim

IPC分类号： H03H7/30

CPC分类号： H04L25/03159 ,  H04L2025/03414

摘要： A data processing method, an equalizer, and a receiver in a wireless communication system including a relay station are provided. The data processing method includes: receiving a base station signal from a base station; receiving a relay station signal from a relay station; determining a propagation delay between the base station signal and the relay station signal; generating an equalizing signal in which interference generated between the base station signal and the relay station signal is alleviated in consideration of the propagation delay; and recovering information bits transmitted by the base station from the equalizing signal. According to an exemplary embodiment of the present invention, it is possible to alleviate performance deterioration due to an interference problem generated in a relay system.

摘要翻译： 提供了包括中继站的无线通信系统中的数据处理方法，均衡器和接收机。 数据处理方法包括：从基站接收基站信号; 从中继站接收中继站信号; 确定所述基站信号与所述中继站信号之间的传播延迟; 产生均衡信号，考虑到传播延迟，减轻基站信号与中继站信号之间产生的干扰; 以及从所述均衡信号恢复由所述基站发送的信息比特。 根据本发明的示例性实施例，可以减轻由于中继系统中产生的干扰问题导致的性能劣化。

公开(公告)号：US20120257669A1

公开(公告)日：2012-10-11

申请号：US13441212

申请日：2012-04-06

申请人： Young Jo BANG ,  Hyeong Sook Park ,  Eon Young Hong ,  Kyung Yeol Sohn ,  Jun Woo Kim ,  Youn Ok Park ,  Jae Kwon Kim

发明人： Young Jo BANG ,  Hyeong Sook Park ,  Eon Young Hong ,  Kyung Yeol Sohn ,  Jun Woo Kim ,  Youn Ok Park ,  Jae Kwon Kim

IPC分类号： H04L27/01 ,  H04B15/00

CPC分类号： H04L25/03159 ,  H04L2025/03414

摘要： A data processing method, an equalizer, and a receiver in a wireless communication system including a relay station are provided. The data processing method includes: receiving a base station signal from a base station; receiving a relay station signal from a relay station; determining a propagation delay between the base station signal and the relay station signal; generating an equalizing signal in which interference generated between the base station signal and the relay station signal is alleviated in consideration of the propagation delay; and recovering information bits transmitted by the base station from the equalizing signal. According to an exemplary embodiment of the present invention, it is possible to alleviate performance deterioration due to an interference problem generated in a relay system.

摘要翻译： 提供了包括中继站的无线通信系统中的数据处理方法，均衡器和接收机。 数据处理方法包括：从基站接收基站信号; 从中继站接收中继站信号; 确定所述基站信号与所述中继站信号之间的传播延迟; 产生均衡信号，考虑到传播延迟，减轻基站信号与中继站信号之间产生的干扰; 以及从所述均衡信号恢复由所述基站发送的信息比特。 根据本发明的示例性实施例，可以减轻由于中继系统中产生的干扰问题导致的性能劣化。

公开(公告)号：US08135079B2

公开(公告)日：2012-03-13

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： H04K1/10

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。

公开(公告)号：US08559566B2

公开(公告)日：2013-10-15

申请号：US12734984

申请日：2008-09-01

申请人： Chang Wahn Yu ,  Dong Weon Yoon ,  Kwang Min Hyun ,  Youn Ok Park ,  Dae Ho Kim ,  Jun-Woo Kim ,  Hyeong Sook Park ,  Seung Jae Bahng ,  Young Jo Bang ,  Kyung Yeol Sohn

发明人： Chang Wahn Yu ,  Dong Weon Yoon ,  Kwang Min Hyun ,  Youn Ok Park ,  Dae Ho Kim ,  Jun-Woo Kim ,  Hyeong Sook Park ,  Seung Jae Bahng ,  Young Jo Bang ,  Kyung Yeol Sohn

IPC分类号： H04L27/06

CPC分类号： H04L25/067 ,  H04L1/005

摘要： Disclosed is a method and apparatus for composing a received symbol signal modulated with a bit reflected Gray code into bit information. According to an embodiment of the present invention, a positive integer of the received symbol signal having bits is assigned according to the Gray mapping rule, and a sign is determined. A value that is indicative of an arrangement of the bits constituting the received symbol signal is calculated. A boundary value in at least one bit group consisting of the bits constituting the received symbol signal is acquired, and a difference from an absolute value of the received symbol signal is calculated. The received symbol signal is converted into information per bit using a value of the received symbol signal based on the positive integer and the determined sign, the value that is indicative of the bit arrangement, and the difference from the absolute value. Therefore, it is possible to reduce complexity in bitwise decomposition for an iterative decoder inevitably used in a receiver.

摘要翻译： 公开了一种用于将被反映格雷码的位进行调制的接收符号信号组合成比特信息的方法和装置。 根据本发明的实施例，根据Gray映射规则分配具有位的接收符号信号的正整数，并且确定符号。 计算表示构成接收符号信号的位的排列的值。 获取由构成接收到的符号信号的比特组构成的至少一个比特组中的边界值，并且计算与接收到的符号信号的绝对值的差值。 基于正整数和确定的符号，指示比特排列的值以及与绝对值的差，使用接收到的符号信号的值将接收的符号信号转换为每位的信息。 因此，可以降低在接收机中不可避免地使用的迭代解码器的逐位分解的复杂度。

公开(公告)号：US08599911B2

公开(公告)日：2013-12-03

申请号：US13453450

申请日：2012-04-23

申请人： Hyeong Sook Park ,  Jun Woo Kim ,  Youn Ok Park

发明人： Hyeong Sook Park ,  Jun Woo Kim ,  Youn Ok Park

IPC分类号： H04B3/46

CPC分类号： H04B17/336 ,  H04B17/318 ,  H04B17/345

摘要： There is provided a method and apparatus for estimating a signal to noise ratio (SNR) in a wireless communication system. The apparatus selects a preamble signal for each of a plurality of sectors from a reception signal experienced by fast Fourier transform (FFT), outputs a correlation signal by performing a correlation between the preamble signal for each sector and a preamble reference signal, estimates power of the reception signal and noise power for each sector based on the correlation signal, selects a minimum value from among the noise powers for the sectors, outputs a net power for each sector by subtracting the minimum value from the power of the reception signal for each sector, and calculates the SNR by dividing the net power for each sector by the minimum value.

摘要翻译： 提供了一种用于估计无线通信系统中的信噪比（SNR）的方法和装置。 该装置从快速傅里叶变换（FFT）所经历的接收信号中选择多个扇区中的每一个的前同步信号，通过执行每个扇区的前导码信号与前导码参考信号之间的相关来输出相关信号， 基于相关信号对每个扇区的接收信号和噪声功率，从扇区的噪声功率中选择最小值，通过从每个扇区的接收信号的功率中减去最小值来输出每个扇区的净功率 ，并且通过将每个扇区的净功率除以最小值来计算SNR。

公开(公告)号：US08160174B2

公开(公告)日：2012-04-17

申请号：US12627506

申请日：2009-11-30

申请人： Young Jo Bang ,  Hyeong Sook Park ,  Jun-Woo Kim ,  Kyung Yeol Sohn ,  Chang Wahn Yu ,  Youn Ok Park ,  Jee Hwan Ahn ,  Il Min Kim

发明人： Young Jo Bang ,  Hyeong Sook Park ,  Jun-Woo Kim ,  Kyung Yeol Sohn ,  Chang Wahn Yu ,  Youn Ok Park ,  Jee Hwan Ahn ,  Il Min Kim

IPC分类号： H04B7/02 ,  H04L5/12 ,  H04L27/06

CPC分类号： H04L25/067 ,  H04B7/0413

摘要： Disclosed is a method of detecting signals at a receiver of a communication system with a multiple input multiple output antenna. With the signal detection method, a square of the distance between a received signal vector and a channel status-considered transmission symbol vector is calculated first, and the square of the distance is then classified into first and second components. The first component is minimized to calculate a plurality of first soft symbol estimates. A solution set of the first component is calculated on the basis of the plurality of first soft symbol estimates. The second component is minimized to calculate a plurality of second soft symbol estimates. A solution set of the second component is calculated on the basis of the plurality of second soft symbol estimates. A final solution set is calculated by doing the sum of the first component solution set and the second component solution.

摘要翻译： 公开了一种在具有多输入多输出天线的通信系统的接收机处检测信号的方法。 利用信号检测方法，首先计算接收信号矢量和通道状态考虑的发送符号向量之间的距离的平方，然后将距离的平方分成第一和第二分量。 将第一分量最小化以计算多个第一软符号估计。 基于多个第一软符号估计来计算第一分量的解集合。 将第二分量最小化以计算多个第二软符号估计。 基于多个第二软符号估计来计算第二分量的解集合。 通过执行第一分量解集合和第二分量解的和来计算最终解集。

公开(公告)号：US20110103521A1

公开(公告)日：2011-05-05

申请号：US12734984

申请日：2008-09-01

申请人： Chang Wahn YU ,  Dong Weon Yoon ,  Kwang Min Hyun ,  Youn Ok Park ,  Dae Ho Kim ,  Jun-Woo Kim ,  Hyeong Sook Park ,  Seung Jae Bahng ,  Young Jo Bang ,  Kyung Yeol Sohn

发明人： Chang Wahn YU ,  Dong Weon Yoon ,  Kwang Min Hyun ,  Youn Ok Park ,  Dae Ho Kim ,  Jun-Woo Kim ,  Hyeong Sook Park ,  Seung Jae Bahng ,  Young Jo Bang ,  Kyung Yeol Sohn

IPC分类号： H04L27/06

CPC分类号： H04L25/067 ,  H04L1/005

摘要： Disclosed is a method and apparatus for composing a received symbol signal modulated with a bit reflected Gray code into bit information. According to an embodiment of the present invention, a positive integer of the received symbol signal having bits is assigned according to the Gray mapping rule, and a sign is determined. A value that is indicative of an arrangement of the bits constituting the received symbol signal is calculated. A boundary value in at least one bit group consisting of the bits constituting the received symbol signal is acquired, and a difference from an absolute value of the received symbol signal is calculated. The received symbol signal is converted into information per bit using a value of the received symbol signal based on the positive integer and the determined sign, the value that is indicative of the bit arrangement, and the difference from the absolute value. Therefore, it is possible to reduce complexity in bitwise decomposition for an iterative decoder inevitably used in a receiver.

摘要翻译： 公开了一种用于将被反映格雷码的位进行调制的接收符号信号组合成比特信息的方法和装置。 根据本发明的实施例，根据Gray映射规则分配具有位的接收符号信号的正整数，并且确定符号。 计算表示构成接收符号信号的位的排列的值。 获取由构成接收到的符号信号的比特组构成的至少一个比特组中的边界值，并且计算与接收到的符号信号的绝对值的差值。 基于正整数和确定的符号，指示比特排列的值以及与绝对值的差，使用接收到的符号信号的值将接收的符号信号转换为每位的信息。 因此，可以降低在接收机中不可避免地使用的迭代解码器的逐位分解的复杂度。

公开(公告)号：US08054909B2

公开(公告)日：2011-11-08

申请号：US12141539

申请日：2008-06-18

申请人： Seung Jae Bahng ,  Jae Kwon Kim ,  Hoon Heo ,  Hyun Myung Wu ,  Youn-Ok Park ,  Young Jo Bang ,  Hyeong Sook Park ,  Hoon Lee ,  Young Ha Lee ,  Jung Pil Choi

发明人： Seung Jae Bahng ,  Jae Kwon Kim ,  Hoon Heo ,  Hyun Myung Wu ,  Youn-Ok Park ,  Young Jo Bang ,  Hyeong Sook Park ,  Hoon Lee ,  Young Ha Lee ,  Jung Pil Choi

IPC分类号： H04L27/00 ,  G06Q30/00

CPC分类号： H04L25/067 ,  H04L25/03203 ,  H04L2025/03426

摘要： The present invention relates to a method of detecting a candidate vector and a method of detecting a transmission symbol using the same. According to an embodiment of the present invention, in a multiple input multiple output (MIMO) system using spatial multiplexing (SM), a receiver selects candidate vectors corresponding to a layer located at a last row among a plurality of rearranged layers, and sequentially ranks constellation dots of a next layer for each of the selected candidate vectors. Then, a plurality of arbitrary constellation dots are selected from the ranked constellation dots, accumulated costs of the arbitrary constellation dots are calculated, and a candidate vector is selected in correspondence with a constellation dot having a minimal accumulated cost. Then, a new arbitrary constellation dot is selected in place of the constellation dot selected as the candidate vector, an accumulated cost of the selected arbitrary constellation dot is compared with accumulated costs of the other arbitrary constellation dots, and another candidate vector is selected.

摘要翻译： 本发明涉及检测候选向量的方法和使用其的发送符号的检测方法。 根据本发明的实施例，在使用空间复用（SM）的多输入多输出（MIMO）系统中，接收机选择与多个重排层中位于最后一行的层相对应的候选向量，并且顺次排列 每个所选候选向量的下一层的星座点。 然后，从分级星座点中选择多个任意星座点，计算任意星座点的累积成本，并且与具有最小累积成本的星座点对应地选择候选矢量。 然后，代替选择为候选矢量的星座点，选择新的任意星座点，将所选择的任意星座点的累积成本与其他任意星座点的累积成本进行比较，并选择另一候选矢量。