公开(公告)号：US20090060070A1

公开(公告)日：2009-03-05

申请号：US12175572

申请日：2008-07-18

申请人： Shigenori Hayase ,  Takashi Yano ,  Masaaki Shida ,  Keisuke Yamamoto ,  Yunjian Jia

发明人： Shigenori Hayase ,  Takashi Yano ,  Masaaki Shida ,  Keisuke Yamamoto ,  Yunjian Jia

IPC分类号： H04L27/28 ,  H04L25/49

CPC分类号： H04L27/2623 ,  H04L5/0023 ,  H04L5/006 ,  H04L25/0224 ,  H04L27/2626 ,  H04L27/2647

摘要： A method for suppressing the peak-to-average power ratio (PAPR) while limiting deterioration in signal characteristics in wireless communication devices utilizing wireless communication methods (OFDM method, MIMO method) for multiplexing and sending multiple signals. A weight calculator unit sets a large weight for transmit signals whose channel quality is poor, relative to the weight of each base component based on the acquired channel quality. A peak detector unit detects the peak from the signal string after unitary conversion, and extracts a distortion component to apply for suppressing the peak. A peak suppression signal generation unit calculates the peak signal from the distortion component and weight of each base component, to add to each base component, and adds the peak suppression signal to each base component prior to unitary transformation.

摘要翻译： 一种抑制峰值与平均功率比（PAPR）的方法，同时利用用于复用和发送多个信号的无线通信方法（OFDM方法，MIMO方法）来限制无线通信装置中的信号特性的劣化。 权重计算器单元基于所获取的信道质量，相对于每个基本分量的权重，对信道质量差的发送信号设置较大的权重。 峰值检测器单元在单位转换之后从信号串检测峰值，并提取失真分量以应用于抑制峰值。 峰值抑制信号生成单元根据每个基本分量的失真分量和权重来计算峰值信号，以添加到每个基本分量，并且在单一变换之前将峰值抑制信号加到每个基本分量。

公开(公告)号：US08155219B2

公开(公告)日：2012-04-10

申请号：US12175572

申请日：2008-07-18

申请人： Shigenori Hayase ,  Takashi Yano ,  Masaaki Shida ,  Keisuke Yamamoto ,  Yunjian Jia

发明人： Shigenori Hayase ,  Takashi Yano ,  Masaaki Shida ,  Keisuke Yamamoto ,  Yunjian Jia

IPC分类号： H04K1/10

CPC分类号： H04L27/2623 ,  H04L5/0023 ,  H04L5/006 ,  H04L25/0224 ,  H04L27/2626 ,  H04L27/2647

摘要： A method for suppressing the peak-to-average power ratio (PAPR) while limiting deterioration in signal characteristics in wireless communication devices utilizing wireless communication methods (OFDM method, MIMO method) for multiplexing and sending multiple signals. A weight calculator unit sets a large weight for transmit signals whose channel quality is poor, relative to the weight of each base component based on the acquired channel quality. A peak detector unit detects the peak from the signal string after unitary conversion, and extracts a distortion component to apply for suppressing the peak. A peak suppression signal generation unit calculates the peak signal from the distortion component and weight of each base component, to add to each base component, and adds the peak suppression signal to each base component prior to unitary transformation.

摘要翻译： 一种抑制峰值与平均功率比（PAPR）的方法，同时利用用于复用和发送多个信号的无线通信方法（OFDM方法，MIMO方法）来限制无线通信装置中的信号特性的劣化。 权重计算器单元基于所获取的信道质量，相对于每个基本分量的权重，对信道质量差的发送信号设置较大的权重。 峰值检测器单元在单位转换之后从信号串检测峰值，并提取失真分量以应用于抑制峰值。 峰值抑制信号生成单元根据每个基本分量的失真分量和权重来计算峰值信号，以添加到每个基本分量，并且在单一变换之前将峰值抑制信号加到每个基本分量。

公开(公告)号：US08824398B2

公开(公告)日：2014-09-02

申请号：US13389309

申请日：2009-08-12

申请人： Yunjian Jia ,  Takashi Yano ,  Shigenori Hayase

发明人： Yunjian Jia ,  Takashi Yano ,  Shigenori Hayase

IPC分类号： H04W72/04 ,  H04B7/04

CPC分类号： H04B7/0417 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0626 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0224 ,  H04L2025/03777

摘要： A transmitting station having plural antennas includes: a control information calculation unit that calculates control information for use by plural receiving stations according to a multi-user MIMO data transmission scheme; a control information transmission parameter calculation unit that calculates a control information transmission parameter based on spatial channel related information; and a control information transmission signal creation unit that creates a control information transmission signal, using the control information transmission parameter and a pilot signal. A resource element mapping unit maps control information transmission signals onto corresponding resource elements for transmission. On the other hand, the receiving stations each include a control information acquisition unit that acquires plural pieces of control information signaled on the corresponding resource elements, acquire control information destined for each receiving station, and demodulate received signals.

摘要翻译： 具有多个天线的发送站包括：控制信息计算单元，其根据多用户MIMO数据传输方案计算由多个接收站使用的控制信息; 控制信息传输参数计算单元，其基于空间信道相关信息计算控制信息传输参数; 以及控制信息发送信号创建单元，其使用控制信息发送参数和导频信号来创建控制信息发送信号。 资源元素映射单元将控制信息发送信号映射到相应的资源元素上进行传输。 另一方面，接收站各自包括控制信息获取单元，其获取在相应的资源元素上发信号的多条控制信息，获取目的地为每个接收站的控制信息，并解调接收的信号。

公开(公告)号：US20120134335A1

公开(公告)日：2012-05-31

申请号：US13389309

申请日：2009-08-12

申请人： Yunjian Jia ,  Takashi Yano ,  Shigenori Hayase

发明人： Yunjian Jia ,  Takashi Yano ,  Shigenori Hayase

IPC分类号： H04W72/04

CPC分类号： H04B7/0417 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0626 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0224 ,  H04L2025/03777

摘要： A transmitting station having plural antennas includes: a control information calculation unit that calculates control information for use by plural receiving stations according to a multi-user MIMO data transmission scheme; a control information transmission parameter calculation unit that calculates a control information transmission parameter based on spatial channel related information; and a control information transmission signal creation unit that creates a control information transmission signal, using the control information transmission parameter and a pilot signal. A resource element mapping unit maps control information transmission signals onto corresponding resource elements for transmission. On the other hand, the receiving stations each include a control information acquisition unit that acquires plural pieces of control information signaled on the corresponding resource elements, acquire control information destined for each receiving station, and demodulate received signals.

摘要翻译： 具有多个天线的发送站包括：控制信息计算单元，其根据多用户MIMO数据传输方案计算由多个接收站使用的控制信息; 控制信息传输参数计算单元，其基于空间信道相关信息计算控制信息传输参数; 以及控制信息发送信号创建单元，其使用控制信息发送参数和导频信号来创建控制信息发送信号。 资源元素映射单元将控制信息发送信号映射到相应的资源元素上进行传输。 另一方面，接收站各自包括控制信息获取单元，其获取在相应的资源元素上发信号的多条控制信息，获取目的地为每个接收站的控制信息，并解调接收的信号。

公开(公告)号：US20110242962A1

公开(公告)日：2011-10-06

申请号：US13126405

申请日：2008-10-28

申请人： Shigenori Hayase ,  Takashi Yano ,  Yunjian Jia

发明人： Shigenori Hayase ,  Takashi Yano ,  Yunjian Jia

IPC分类号： H04J11/00

CPC分类号： H04B7/0426

摘要： The present invention achieves a communication speed close to a theoretical limitation with suppressing a computing amount and without increasing protocol overhead. In a multiuser MIMO wireless communication method according to the present invention, a receive weight matrix is determined based on a channel matrix, the channel matrix is updated by a product of the receive weight matrix and a channel matrix, a transmitted signal is generated in a ZF-DPC method based on the updated channel matrix and transmitted, and the receive weight matrix is multiplied with a received signal and then subjected to a DPC decoding. A method of determining a receive weight matrix is to take a conjugate transpose matrix of a left singular matrix obtained when subjecting the channel matrix to a singular value decomposition.

摘要翻译： 本发明通过抑制计算量并且不增加协议开销来实现接近理论限制的通信速度。 在根据本发明的多用户MIMO无线通信方法中，基于信道矩阵确定接收权重矩阵，通过接收权重矩阵和信道矩阵的乘积更新信道矩阵，发送信号在 基于更新的信道矩阵并发送的ZF-DPC方法，并将接收权重矩阵与接收信号相乘，然后进行DPC解码。 一种确定接收权重矩阵的方法是采用将信道矩阵进行奇异值分解时获得的左奇异矩阵的共轭转置矩阵。

公开(公告)号：US20120087265A1

公开(公告)日：2012-04-12

申请号：US13266284

申请日：2009-04-27

申请人： Tsuyoshi Tamaki ,  Takashi Yano ,  Yunjian Jia

发明人： Tsuyoshi Tamaki ,  Takashi Yano ,  Yunjian Jia

IPC分类号： H04W24/00 ,  H04J3/00 ,  H04L12/26

CPC分类号： H04W92/20 ,  H01Q1/246 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0465 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/0645 ,  H04W24/00 ,  H04W24/10 ,  H04W28/04 ,  H04W48/18 ,  H04W88/06 ,  H04W88/08

摘要： A frame time having a certain period of time is divided into: a time period (for inter-base-station time division multiplex communication) in which one of the base stations has a transmission right in the simultaneous transmission and carries out inter-base-station time division multiplex communication so as to avoid interference between the base stations; and a time period (for inter-base-station simultaneous communication) for communication which is simultaneously carried out between the plurality of base stations. Furthermore, the time periods are switched for the communication.

摘要翻译： 具有一定时间段的帧时间被划分为：一个基站在同时发送中具有发送权限的时间段（用于基站间时分复用通信），并执行基站间时间 站时分复用通信，以避免基站之间的干扰; 以及用于在多个基站之间同时执行的通信的时间段（用于基站间同时通信）。 此外，切换用于通信的时间段。

公开(公告)号：US08942117B2

公开(公告)日：2015-01-27

申请号：US13266284

申请日：2009-04-27

申请人： Tsuyoshi Tamaki ,  Takashi Yano ,  Yunjian Jia

发明人： Tsuyoshi Tamaki ,  Takashi Yano ,  Yunjian Jia

IPC分类号： H04L12/26 ,  H04W92/20 ,  H01Q1/24 ,  H04B7/02 ,  H04B7/04 ,  H04B7/06 ,  H04W24/00 ,  H04W24/10 ,  H04W28/04 ,  H04W48/18 ,  H04W88/06 ,  H04W88/08

CPC分类号： H04W92/20 ,  H01Q1/246 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0465 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/0645 ,  H04W24/00 ,  H04W24/10 ,  H04W28/04 ,  H04W48/18 ,  H04W88/06 ,  H04W88/08

摘要： A frame time having a certain period of time is divided into: a time period (for inter-base-station time division multiplex communication) in which one of the base stations has a transmission right in the simultaneous transmission and carries out inter-base-station time division multiplex communication so as to avoid interference between the base stations; and a time period (for inter-base-station simultaneous communication) for communication which is simultaneously carried out between the plurality of base stations. Furthermore, the time periods are switched for the communication.

摘要翻译： 具有一定时间段的帧时间被划分为：一个基站在同时发送中具有发送权限的时间段（用于基站间时分复用通信），并执行基站间时间 站时分复用通信，以避免基站之间的干扰; 以及用于在多个基站之间同时执行的通信的时间段（用于基站间同时通信）。 此外，切换用于通信的时间段。

公开(公告)号：US20130331110A1

公开(公告)日：2013-12-12

申请号：US13882648

申请日：2011-10-27

申请人： Yunjian Jia ,  Kenzaburo Fujishima

发明人： Yunjian Jia ,  Kenzaburo Fujishima

IPC分类号： H04L5/00

CPC分类号： H04L5/0035 ,  H04L5/0023 ,  H04L5/006 ,  H04L5/0069 ,  H04L5/0094 ,  H04W28/06 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0453 ,  H04W88/08

摘要： A base station performs an association between frequency range and combinations of a plurality of base stations including an local base station to notify a terminal of the association. According to the notified association, the terminal, for each frequency, calculates quality of communication with one base station or quality of communication with the combination of the plurality of base stations. The base station and the control station determine the base station/the plurality of base stations that communicate with the terminal, the wireless resource and the transmission scheme, based on the result. Further, the base station selects whether to notify an entirety of or a part of the association to the terminal using positional information of the terminal. Since the association information that is unnecessary for the terminal is not communicated, it is possible to further lighten the load of control.

摘要翻译： 基站执行频率范围和包括本地基站的多个基站的组合之间的关联，以向终端通知关联。 根据所通知的关联，终端针对每个频率，计算与一个基站的通信质量或者与多个基站的组合的通信质量。 基站和控制站根据结果确定与终端通信的基站/多个基站，无线资源和传输方案。 此外，基站使用终端的位置信息来选择是否向终端通知关联的全部或一部分。 由于终端不需要的关联信息不通信，因此能够进一步减轻控制的负担。

公开(公告)号：US20090307567A1

公开(公告)日：2009-12-10

申请号：US12473427

申请日：2009-05-28

申请人： Katsuhiko Tsunehara ,  Yunjian Jia

发明人： Katsuhiko Tsunehara ,  Yunjian Jia

IPC分类号： H03M13/45 ,  G06F11/00

CPC分类号： H03M13/3723 ,  H03M13/2957 ,  H03M13/612 ,  H03M13/658

摘要： The error correction capability for wireless communication carried out involving propagation path fluctuation in time and frequency selectivity can be improved. A soft decision likelihood value inputted to an error correction decoder is multiplied by a weight determined according to the distance between the data symbol and pilot symbol corresponding to the soft decision likelihood value. Namely, the soft decision bit likelihood value corresponding to the data symbol is weighted according to the distances in time or frequency between the pilot symbol and data symbol. The weight is made smaller when the distance in time or frequency is larger.

摘要翻译： 可以提高在时间和频率选择性中涉及传播路径波动的无线通信的纠错能力。 输入到纠错解码器的软判决似然值乘以根据数据符号与对应于软判决似然值的导频符号之间的距离确定的加权。 即，对应于数据符号的软判决比特似然值根据导频符号和数据符号之间的时间或频率的距离进行加权。 当时间或频率的距离较大时，重量变小。

公开(公告)号：US08413030B2

公开(公告)日：2013-04-02

申请号：US12473427

申请日：2009-05-28

申请人： Katsuhiko Tsunehara ,  Yunjian Jia

发明人： Katsuhiko Tsunehara ,  Yunjian Jia

IPC分类号： H03M13/03

CPC分类号： H03M13/3723 ,  H03M13/2957 ,  H03M13/612 ,  H03M13/658

摘要： The error correction capability for wireless communication carried out involving propagation path fluctuation in time and frequency selectivity can be improved. A soft decision likelihood value inputted to an error correction decoder is multiplied by a weight determined according to the distance between the data symbol and pilot symbol corresponding to the soft decision likelihood value. Namely, the soft decision bit likelihood value corresponding to the data symbol is weighted according to the distances in time or frequency between the pilot symbol and data symbol. The weight is made smaller when the distance in time or frequency is larger.

摘要翻译： 可以提高在时间和频率选择性中涉及传播路径波动的无线通信的纠错能力。 输入到纠错解码器的软判决似然值乘以根据数据符号与对应于软判决似然值的导频符号之间的距离确定的加权。 即，对应于数据符号的软判决比特似然值根据导频符号和数据符号之间的时间或频率的距离进行加权。 当时间或频率的距离较大时，重量变小。