专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明申请

US20100020892A1 APPARATUS AND METHOD FOR GENERATING SYMBOL FOR MULTIPLE ANTENNAS 有权
标题翻译：用于生成多个天线的符号的装置和方法
公开(公告)号：US20100020892A1
公开(公告)日：2010-01-28
申请号：US12513817
申请日：2007-03-13
申请人： Seung-Joon Lee , Dong-Seung Kwon
发明人： Seung-Joon Lee , Dong-Seung Kwon
IPC分类号： H04L27/28 , H04L27/00 , H04L27/20
CPC分类号： H04L1/0625 , H04L1/0606 , H04L1/0668 , H04L27/2634
摘要： The present invention relates a symbol generation apparatus for multiple antennas having low receiving complexity and having flexibility with respect to an increase in the number of antennas. The symbol generation apparatus includes a plurality of space-time channel encoders respectively corresponding to a plurality of channels, and an inverse fast Fourier transformer group. The respective space-time channel encoders receive a digital-modulated symbol group from the corresponding channel, perform a space-time encoding operation with respect to a plurality of space areas and at least one time area, shift phases by using a plurality of phase values, and generate a plurality of phase-shifted space-time codewords. The inverse fast Fourier transformer group performs an inverse fast Fourier transform operation by using the plurality of phase-shifted space-time codewords in a plurality of subcarriers respectively corresponding to the plurality of channels, and generates a plurality of inverse fast Fourier transformed signals.
摘要翻译：本发明涉及一种具有低接收复杂度的多个天线的符号产生装置，并且相对于天线数量的增加具有灵活性。符号生成装置包括分别对应于多个信道的多个时空信道编码器和快速傅立叶逆变换组。相应的时空信道编码器从对应的信道接收数字调制符号组，对多个空间区域和至少一个时间区域执行空时编码操作，通过使用多个相位值并产生多个相移时空码字。逆快速傅立叶变换组通过使用分别对应于多个通道的多个副载波中的多个相移时空码字执行快速傅立叶逆变换，并产生多个快速傅里叶逆变换信号。

62. 发明申请

US20100014611A1 METHOD FOR DECIDING POSITION OF MAPPING SYMBOLS, AND DEVICE AND METHOD FOR MODULATING BINARY SIGNAL 失效
标题翻译：用于决定映射符号的位置的方法，以及用于调制二进制信号的装置和方法
公开(公告)号：US20100014611A1
公开(公告)日：2010-01-21
申请号：US12518951
申请日：2007-12-14
申请人： Byung-Jae Kwak , Nah-Oak Song , Dong-Seung Kwon
发明人： Byung-Jae Kwak , Nah-Oak Song , Dong-Seung Kwon
IPC分类号： H04L27/20 , H04L27/12
CPC分类号： H04L27/3494 , H04L27/3405
摘要： Disclosed is a binary signal modulator for minimizing deterioration of receiving performance caused by phase error. The binary signal modulator receives binary signals, and converts the binary signals into complex symbols according to a predetermined mapping relation. Here, the mapping relation is generated when a plurality of mapping symbols are arranged on a plurality of trajectories so that the distance between the mapping symbols is greater than or equal to a predetermined distance and the phase between the mapping symbols is greater than or equal to a predetermined angle from among the trajectories starting from a plurality of points on the complex plane, and a distance between the trajectories is greater than or equal to the minimum distance from among the distances between the points.
摘要翻译：公开了一种用于最小化由相位误差引起的接收性能的劣化的二进制信号调制器。二进制信号调制器接收二进制信号，并根据预定的映射关系将二进制信号转换成复符号。这里，当多个映射符号被布置在多个轨迹上时，生成映射关系，使得映射符号之间的距离大于或等于预定距离，并且映射符号之间的相位大于或等于从复平面上的多个点开始的轨迹之间的预定角度，并且轨迹之间的距离大于或等于从点之间的距离之间的最小距离。

63. 发明申请

US20090252240A1 TRANSMITTING APPARATUS AND METHOD, AND RECEIVING APPARATUS AND METHOD IN MULTPLE ANTENNA SYSTEM 失效
标题翻译：发射装置和方法，以及在多天线系统中接收装置和方法
公开(公告)号：US20090252240A1
公开(公告)日：2009-10-08
申请号：US12096778
申请日：2006-12-04
申请人： Dong-Seung Kwon , Young-Seog Song , Seung-Joon Lee , Jong-Ee Oh , Chungyong Lee , Myeong-Cheol Shin
发明人： Dong-Seung Kwon , Young-Seog Song , Seung-Joon Lee , Jong-Ee Oh , Chungyong Lee , Myeong-Cheol Shin
IPC分类号： H04L27/28
CPC分类号： H04B7/0639 , H04L1/0003 , H04L1/0006
摘要： Respective codewords of quantization codebooks corresponding to a number of data streams are selected based on channel information estimated by a received training symbol. A stream mode is selected among stream modes to determine a modulation method applied to each data stream. The data stream is detected by using the codeword corresponding to the quantization codebook of the data stream corresponding to the selected stream mode as a precode matrix, and the detected data stream is modulated. In this case, a receiving apparatus performs a feedback operation so that indexes of the selected stream mode and the codeword used as the precode matrix may be transmitted to the transmitting apparatus. The transmitting apparatus selects the number of transmitted data streams and the modulation method based on the transmitted index of feedback streams by the feedback operation.
摘要翻译：基于由接收到的训练符号估计的信道信息来选择与多个数据流对应的量化码本的各个码字。在流模式中选择流模式以确定应用于每个数据流的调制方法。通过使用与对应于所选流模式的数据流的量化码本对应的码字作为预编码矩阵来检测数据流，并且检测的数据流被调制。在这种情况下，接收装置执行反馈操作，使得所选流模式的索引和用作预编码矩阵的码字可以被发送到发送装置。发送装置通过反馈操作基于所发送的反馈流索引来选择发送数据流的数量和调制方法。

64. 发明申请

US20090161805A1 Detection Method of Space Domain Maximum Posteriori Probability in a Wireless Communication System 有权
标题翻译：无线通信系统中空域最大后验概率的检测方法
公开(公告)号：US20090161805A1
公开(公告)日：2009-06-25
申请号：US12225908
申请日：2007-01-26
申请人： Xiqi Gao , Xiaohu You , Wenjin Wang , Dong-Seung Kwon , Seung-Jun Lee
发明人： Xiqi Gao , Xiaohu You , Wenjin Wang , Dong-Seung Kwon , Seung-Jun Lee
IPC分类号： H04B1/10
CPC分类号： H04L1/0055 , H04L1/005 , H04L1/06
摘要： A detection method of space domain maximum posteriori probability (MAP) in a wireless communication system is a kind of detection technique of space domain MAP in a multi-aerial wireless communication system, which makes the detection of iteration soft interference elimination for the interference signals in the other moments, and makes the MAP detection or the simplified MAP detection for the all signals in current time and space domain. It includes the steps of: taking a fading block as a unit; the received signals are matched and combined in time domain and space domain, and calculating an equivalent channel matrix; making the sequence detection, calculating estimation and variance of the signals before the ending of detecting internal iteration; when the internal iteration detection finishes, the result is outputted, or is outputted after hard decision.
摘要翻译：无线通信系统中空间域最大后验概率（MAP）的检测方法是多空中无线通信系统中空间域MAP的一种检测技术，能够对干扰信号的迭代软干扰消除进行检测在其他时刻，对当前时间和空间域中的所有信号进行MAP检测或简化MAP检测。它包括以下步骤：以褪色块为单位; 接收信号在时域和空域进行匹配和组合，并计算等效信道矩阵; 在检测内部迭代结束之前进行序列检测，计算信号的估计和方差; 当内部迭代检测结束时，输出结果，或在硬判决后输出。

65. 发明申请

US20090022209A1 TRANSMITTING APPARATUS USING SPREAD-SPECTRUM TRANSMISSION METHOD 审中-公开
标题翻译：使用传播频谱传输方法的发射装置
公开(公告)号：US20090022209A1
公开(公告)日：2009-01-22
申请号：US12096870
申请日：2006-07-25
申请人： Young-Seog Song , Dong-Seung Kwon , Jong-Ee Oh
发明人： Young-Seog Song , Dong-Seung Kwon , Jong-Ee Oh
IPC分类号： H04B1/707
CPC分类号： H04J13/0048 , H04J13/12
摘要： The present invention relates to a transmitting apparatus using a spread-spectrum transmission scheme. The transmitting apparatus includes a precoder for preceding a data signal by performing a product operation between a first matrix and a diagonal matrix. The preceding outputs a signal responding to the input data by performing a product operation between the first matrix and the diagonal matrix. Such a transmitting apparatus obtains a maximum diversity gain.
摘要翻译：本发明涉及一种使用扩频传输方案的发送装置。发送装置包括预编码器，用于通过执行第一矩阵和对角矩阵之间的乘积运算来先于数据信号。上述内容通过在第一矩阵和对角矩阵之间执行乘积运算来输出响应于输入数据的信号。这样的发送装置获得最大分集增益。

66. 发明申请

US20080227498A1 Low-Complexity Joint Transmit/Receive Antenna Selection Method For Mimo Systems 失效
标题翻译： Mimo系统的低复杂度联合发射/接收天线选择方法
公开(公告)号：US20080227498A1
公开(公告)日：2008-09-18
申请号：US12064184
申请日：2005-12-21
申请人： Dong-Seung Kwon , Chung-Gu Kang , Jun-Ho Son
发明人： Dong-Seung Kwon , Chung-Gu Kang , Jun-Ho Son
IPC分类号： H04B7/04
CPC分类号： H04B7/061 , H04B7/082
摘要： Provided is a low-complexity transmit/receive antenna selection method for Multi-Input Multi-Output (MIMO) systems. The method includes the steps of generating a gain matrix of receive channel, calculating norm values of channel gains for each row (receive antennas) and column (transmit antennas) of the generated gain matrix of the receive channel, selecting an antenna with the maximum norm value among the calculated norm values of channel gains, and repeatedly performing the process of alternately selecting transmit and receive antennas having the maximum channel gain value among the channel gain values of the selected antenna until a required number of antennas is all selected.
摘要翻译：提供了一种用于多输入多输出（MIMO）系统的低复杂度的发射/接收天线选择方法。该方法包括以下步骤：产生接收信道的增益矩阵，计算接收信道的所生成的增益矩阵的每行（接收天线）和列（发送天线）的信道增益的范数值，选择具有最大范数的天线并且重复执行交替选择所选天线的信道增益值之中具有最大信道增益值的发射和接收天线的处理，直到全部选择所需数量的天线。

67. 发明申请

US20070171811A1 Apparatus for effectively transmitting in orthogonal frequency division multiple access using multiple antenna and method thereof 审中-公开
公开(公告)号：US20070171811A1
公开(公告)日：2007-07-26
申请号：US11585481
申请日：2006-10-24
申请人： Yu-Ro Lee , Dong-Seung Kwon
发明人： Yu-Ro Lee , Dong-Seung Kwon
IPC分类号： H04J11/00 , H04Q7/00
CPC分类号： H04B7/061 , H04B7/0671 , H04B7/068 , H04B7/12 , H04L27/2626
摘要： The present invention relates to a transmitting apparatus of an OFDMA system and a method thereof. The transmitting apparatus includes an encoder for modulating data to be transmitted into data or a preamble by using a desired modulation scheme; an S/P converter for converting serial data output from the encoder to parallel data; a preamble or pilot generator for generating a pilot or preamble; a multiplexer for multiplexing the data or preamble output from the preamble or pilot generator and the parallel data; an antenna selection controller for dividing an entire band of a signal output from the multiplexer into groups formed of neighboring symbols in time domain and neighboring subcarriers in frequency domain, and selecting a transmit antenna for each group; an IFFT unit for turning off subcarriers in groups selected by the antenna selection controller and subcarriers in unselected groups by the antenna selection controller and performing IFFT; for each antenna, a P/S converter for converting parallel signals transmitted from the IFFT unit into serial signals and inserting a cyclic prefix; and for each antenna, a D/A converter and filter for converting a digital signal transmitted from the P/S into an analog signal and filtering the analog signal, and transmitting the filtered analog signal through an antenna of an R/F end. Accordingly, when a transmitting end does not know a channel state of a transmit antenna, a transmit antenna is selected for an allocation unit and data is transmitted through the selected transmit antenna when a transmitting end of an OFDMA system using multiple antennas does not know a channel state, and accordingly a diversity gain can be acquired without making any changes in allocation of subcarriers according to the number of antennas, a transmission structure of a pilot of the transmitting end, an allocation structure of the transmitting end, and a receiving end. In addition, when the transmitting end does know the channel state, an antenna having the best channel state is selected for each group, and accordingly, performance degradation due to feedback delay of channel state information and inter-antenna interference due to an increase of mobility of the terminal can be prevented.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式