公开(公告)号：US07929621B2

公开(公告)日：2011-04-19

申请号：US11636815

申请日：2006-12-11

申请人： Jun-Woo Kim ,  Jae-Gun Jung ,  Dae-Ho Kim ,  Hyeong-Sook Park ,  Youn-Ok Park

发明人： Jun-Woo Kim ,  Jae-Gun Jung ,  Dae-Ho Kim ,  Hyeong-Sook Park ,  Youn-Ok Park

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L27/2608 ,  H04L25/03866 ,  H04L27/2647

摘要： A terminal demodulation apparatus previously stores a received frame signal in a memory before inputting the same into a fast Fourier transform (FFT) unit, performs a demodulation to necessary information read from the corresponding memory, and has a separate data subcarrier memory and pilot subcarrier memory, and uses the signal demodulation method mixed with a subcarrier allocation method so as to easily demodulate various subcarrier allocation methods.

摘要翻译： 终端解调装置预先将存储器中的接收帧信号存储在存储器中，并将其输入到快速傅里叶变换（FFT）单元中，对从相应的存储器读取的必要信息进行解调，并具有单独的数据副载波存储器和导频副载波存储器 并且使用与子载波分配方法混合的信号解调方法，以便容易地解调各种副载波分配方法。

公开(公告)号：US20070133703A1

公开(公告)日：2007-06-14

申请号：US11636815

申请日：2006-12-11

申请人： Jun-Woo Kim ,  Jae-Gun Jung ,  Dae-Ho Kim ,  Hyeong-Sook Park ,  Youn-Ok Park

发明人： Jun-Woo Kim ,  Jae-Gun Jung ,  Dae-Ho Kim ,  Hyeong-Sook Park ,  Youn-Ok Park

IPC分类号： H04K1/10

CPC分类号： H04L27/2608 ,  H04L25/03866 ,  H04L27/2647

摘要： A terminal demodulation apparatus previously stores a received frame signal in a memory before inputting the same into a fast Fourier transform (FFT) unit, performs a demodulation to necessary information read from the corresponding memory, and has a separate data subcarrier memory and pilot subcarrier memory, and uses the signal demodulation method mixed with a subcarrier allocation method so as to easily demodulate various subcarrier allocation methods.

摘要翻译： 终端解调装置预先将存储器中的接收帧信号存储在存储器中，并将其输入到快速傅里叶变换（FFT）单元中，对从相应的存储器读取的必要信息进行解调，并具有单独的数据副载波存储器和导频副载波存储器 并且使用与子载波分配方法混合的信号解调方法，以便容易地解调各种副载波分配方法。

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：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：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：US20070135052A1

公开(公告)日：2007-06-14

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： H04B1/00

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：US07970363B2

公开(公告)日：2011-06-28

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： H01Q11/12 ,  H04K3/00

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，并且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：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：US08005182B2

公开(公告)日：2011-08-23

申请号：US11925686

申请日：2007-10-26

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

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

IPC分类号： H03D3/24

CPC分类号： H04L27/266 ,  H04L27/2659 ,  H04L27/2679

摘要： The present invention relates to an apparatus and method of compensating for a frequency offset in an orthogonal frequency division multiple access system that is capable of efficiently estimating and compensating for the frequency offset. A receiver of the orthogonal frequency division multiple access system can individually estimate a fractional frequency offset and an integer frequency offset by using a downlink preamble signal. Further, the receiver can compensate for the frequency offset by adding the integer frequency offset once after completely compensating for the fractional frequency offset. Therefore, it is possible to efficiently compensate for the frequency offset.

摘要翻译： 本发明涉及一种能够有效地估计和补偿频偏的正交频分多址系统中的频偏的补偿装置和方法。 正交频分多址系统的接收机可以通过使用下行链路前导码信号单独地估计分数频率偏移和整数频率偏移。 此外，接收机可以通过在完全补偿分数频率偏移之后加上整数频率偏移一次来补偿频率偏移。 因此，可以有效地补偿频率偏移。

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。