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1. 发明申请

US20120120884A1 WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD 有权
标题翻译：无线通信设备，无线通信系统和无线通信方法
公开(公告)号：US20120120884A1
公开(公告)日：2012-05-17
申请号：US13119796
申请日：2009-08-31
申请人： Qian Yu , Masayuki Hoshino , Daichi Imamura , Kenichi Miyoshi , Megumi Ichikawa
发明人： Qian Yu , Masayuki Hoshino , Daichi Imamura , Kenichi Miyoshi , Megumi Ichikawa
IPC分类号： H04W74/04 , H04W52/04 , H04W72/04
CPC分类号： H04B7/0426 , H04B7/0452 , H04B7/0663
摘要： Interference between users in an MU-MIMO system is minimized by effective precoding, without increasing an overhead of control data. In a wireless communication system in which multiplex communication is possible between multiple UE1, UE2, and BS, a channel estimation and precoding selection unit 539 in BS estimates channels from the respective UE1, UE2 to the BS, determines a precoding matrix P from a projection matrix to make the two channel response matrices orthogonal or nearly orthogonal, and feeds back the precoding matrix P to UE2, and executes precoding on only UE2 of the two. A precoding unit 524 in the UE2 employs the precoding matrix P that has been notified to perform precoding of a data stream, and sends the precoded data stream to the BS.
摘要翻译：在MU-MIMO系统中的用户之间的干扰通过有效的预编码被最小化，而不增加控制数据的开销。在可以在多个UE1，UE2和BS之间进行复用通信的无线通信系统中，BS中的信道估计和预编码选择单元539估计来自相应UE1，UE2到BS的信道，从投影中确定预编码矩阵P 矩阵，以使两个信道响应矩阵正交或接近正交，并且将预编码矩阵P反馈到UE2，并且仅在两者的UE2上执行预编码。 UE2中的预编码单元524采用已经通知的预编码矩阵P来执行数据流的预编码，并将预编码的数据流发送到BS。

2. 发明授权

US08848631B2 Wireless communication apparatus, wireless communication system, and wireless communication method 有权
标题翻译：无线通信装置，无线通信系统以及无线通信方式
公开(公告)号：US08848631B2
公开(公告)日：2014-09-30
申请号：US13119796
申请日：2009-08-31
申请人： Qian Yu , Masayuki Hoshino , Daichi Imamura , Megumi Ichikawa
发明人： Qian Yu , Masayuki Hoshino , Daichi Imamura , Kenichi Miyoshi
IPC分类号： H04B7/204 , H04B7/04 , H04B7/06
CPC分类号： H04B7/0426 , H04B7/0452 , H04B7/0663
摘要： Interference between users in an MU-MIMO system is minimized by effective precoding, without increasing an overhead of control data. In a wireless communication system in which multiplex communication is possible between multiple UE1, UE2, and BS, a channel estimation and precoding selection unit 539 in BS estimates channels from the respective UE1, UE2 to the BS, determines a precoding matrix P from a projection matrix to make the two channel response matrices orthogonal or nearly orthogonal, and feeds back the precoding matrix P to UE2, and executes precoding on only UE2 of the two. A precoding unit 524 in the UE2 employs the precoding matrix P that has been notified to perform precoding of a data stream, and sends the precoded data stream to the BS.
摘要翻译：在MU-MIMO系统中的用户之间的干扰通过有效的预编码被最小化，而不增加控制数据的开销。在可以在多个UE1，UE2和BS之间进行复用通信的无线通信系统中，BS中的信道估计和预编码选择单元539估计来自相应UE1，UE2到BS的信道，从投影中确定预编码矩阵P 矩阵，以使两个信道响应矩阵正交或接近正交，并且将预编码矩阵P反馈到UE2，并且仅在两者的UE2上执行预编码。 UE2中的预编码单元524采用已经通知的预编码矩阵P来执行数据流的预编码，并将预编码的数据流发送到BS。

3. 发明授权

US08737509B2 Wireless communication apparatus, wireless communication system and wireless communication method 有权
标题翻译：无线通信装置，无线通信系统及无线通信方式
公开(公告)号：US08737509B2
公开(公告)日：2014-05-27
申请号：US13141743
申请日：2010-01-06
申请人： Qian Yu , Lei Huang , Masayuki Hoshino , Daichi Imamura
发明人： Qian Yu , Lei Huang , Masayuki Hoshino , Daichi Imamura
IPC分类号： H04L1/02
CPC分类号： H04B7/0456 , H04B7/002 , H04B7/0413 , H04B7/0469 , H04B7/0617 , H04B7/0634 , H04B7/0639 , H04B7/0691 , H04B7/10 , H04L25/0224 , H04L25/0248 , H04L25/03898 , H04L25/03961 , H04L2025/03808
摘要： In a MIMO system using a cross-polarized antenna structure, even if no ideal XPD can be obtained, the interference between different polarized waves can be reduced to allow an effective precoding to be executed. When a MIMO communication is performed between a transmitter (250) and a receiver (260) each using a cross-polarized antenna structure, a channel estimating and precoding selection section (214) of the receiver (260) performs a channel estimation of MIMO channels from the transmitter to the receiver, decides a precoding matrix (P) of a projection matrix for mutually orthogonalizing or substantially orthogonalizing the channel response matrixes for respective different polarized waves, and feeds the determined precoding matrix (P) back to the transmitter (250). In the transmitter (250), a precoding processing section (208) applies the precoding matrix (P) to the spatial stream corresponding to one of the polarized waves to perform a precoding, thereby allowing the transmitter (250) to transmit the polarized waves with the orthogonality therebetween maintained.
摘要翻译：在使用交叉极化天线结构的MIMO系统中，即使不能获得理想的XPD，也可以减小不同极化波之间的干扰，从而实现有效的预编码。当在每个使用交叉极化天线结构的发射机（250）和接收机（260）之间执行MIMO通信时，接收机（260）的信道估计和预编码选择部分（214）执行MIMO信道的信道估计从发射机到接收机，决定用于相互正交化或基本正交化各个不同极化波的信道响应矩阵的投影矩阵的预编码矩阵（P），并将所确定的预编码矩阵（P）馈送给发射机（250）。在发射机（250）中，预编码处理部（208）将预编码矩阵（P）应用于与一个偏振波相对应的空间流，以执行预编码，从而允许发射机（250）发射偏振波保持其间的正交性。

4. 发明申请

US20110261894A1 WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD 有权
标题翻译：无线通信设备，无线通信系统和无线通信方法
公开(公告)号：US20110261894A1
公开(公告)日：2011-10-27
申请号：US13141743
申请日：2010-01-06
申请人： Qian Yu , Lei Huang , Masayuki Hoshino , Daichi Imamura
发明人： Qian Yu , Lei Huang , Masayuki Hoshino , Daichi Imamura
IPC分类号： H04B7/02 , H04L25/03
CPC分类号： H04B7/0456 , H04B7/002 , H04B7/0413 , H04B7/0469 , H04B7/0617 , H04B7/0634 , H04B7/0639 , H04B7/0691 , H04B7/10 , H04L25/0224 , H04L25/0248 , H04L25/03898 , H04L25/03961 , H04L2025/03808
摘要： In a MIMO system using a cross-polarized antenna structure, even if no ideal XPD can be obtained, the interference between different polarized waves can be reduced to allow an effective precoding to be executed. When a MIMO communication is performed between a transmitter (250) and a receiver (260) each using a cross-polarized antenna structure, a channel estimating and precoding selection section (214) of the receiver (260) performs a channel estimation of MIMO channels from the transmitter to the receiver, decides a precoding matrix (P) of a projection matrix for mutually orthogonalizing or substantially orthogonalizing the channel response matrixes for respective different polarized waves, and feeds the determined precoding matrix (P) back to the transmitter (250). In the transmitter (250), a precoding processing section (208) applies the precoding matrix (P) to the spatial stream corresponding to one of the polarized waves to perform a precoding, thereby allowing the transmitter (250) to transmit the polarized waves with the orthogonality therebetween maintained.
摘要翻译：在使用交叉极化天线结构的MIMO系统中，即使不能获得理想的XPD，也可以减小不同极化波之间的干扰，从而实现有效的预编码。当在每个使用交叉极化天线结构的发射机（250）和接收机（260）之间执行MIMO通信时，接收机（260）的信道估计和预编码选择部分（214）执行MIMO信道的信道估计从发射机到接收机，决定用于相互正交化或基本正交化各个不同极化波的信道响应矩阵的投影矩阵的预编码矩阵（P），并将所确定的预编码矩阵（P）馈送给发射机（250）。在发射机（250）中，预编码处理部（208）将预编码矩阵（P）应用于与一个偏振波相对应的空间流，以执行预编码，从而允许发射机（250）发射偏振波保持其间的正交性。

5. 发明授权

US08464120B2 Method and system for data transmission in a multiple input multiple output (MIMO) system including unbalanced lifting of a parity check matrix prior to encoding input data streams 有权
标题翻译：在多输入多输出（MIMO）系统中进行数据传输的方法和系统，包括对编码输入数据流之前的奇偶校验矩阵的不平衡提升
公开(公告)号：US08464120B2
公开(公告)日：2013-06-11
申请号：US12445275
申请日：2006-10-10
申请人： Qian Yu , Ping Luo , Masayuki Hoshino
发明人： Qian Yu , Ping Luo , Masayuki Hoshino
IPC分类号： G06F11/00
CPC分类号： H04B7/068 , H03M13/114 , H03M13/116 , H03M13/118 , H03M13/356 , H04L1/0041 , H04L1/0057 , H04L1/007 , H04L1/0625
摘要： A method for data transmission in a multiple input multiple output (MIMO) system, the method including, receiving multiple input data streams; performing low density parity check (LDPC) encoding of the input data streams utilizing a parity check matrix, the parity check matrix including a plurality of sub-parity check matrices for encoding respective ones of the input data streams; and performing space time encoding for transmitting the LDPC encoded input data streams over a plurality of antennas.
摘要翻译：一种用于多输入多输出（MIMO）系统中数据传输的方法，所述方法包括：接收多个输入数据流; 使用奇偶校验矩阵对输入数据流进行低密度奇偶校验（LDPC）编码，所述奇偶校验矩阵包括用于编码各个输入数据流的多个子奇偶校验矩阵; 以及执行空间时间编码以在多个天线上发送LDPC编码的输入数据流。

6. 发明授权

US08225168B2 Method and system for data transmission in a multiple input multiple output (MIMO) system 有权
标题翻译：用于多输入多输出（MIMO）系统中数据传输的方法和系统
公开(公告)号：US08225168B2
公开(公告)日：2012-07-17
申请号：US12445277
申请日：2007-10-01
申请人： Qian Yu , Ping Luo , Masayuki Hoshino
发明人： Qian Yu , Ping Luo , Masayuki Hoshino
IPC分类号： H03M13/00 , H03M13/03 , G06F11/00 , H04L5/12 , H04L27/06 , H04B17/00
CPC分类号： H04B7/068 , H03M13/114 , H03M13/116 , H03M13/118 , H03M13/356 , H04L1/0041 , H04L1/0057 , H04L1/007 , H04L1/0625
摘要： A method for data transmission in a multiple input multiple output (MIMO) system. The method for data transmission includes receiving multiple input data streams and performing low density parity check (LDPC) encoding of the input data streams utilizing a parity check matrix. The parity check matrix comprises a plurality of sub-parity check matrices for encoding respective associated ones of the input data streams and performing space time encoding for transmitting the LDPC encoded input data streams over a plurality of antennas. The performing of the LDPC encoding of the input data streams includes generating one or more connection matrices, each connection matrix for injecting information of one of the input data streams into the encoding of another one of the input data streams. Each connection matrix is a zero matrix if a lowest parity check protection level based on the sub-parity check matrix for the one of the input data streams is equal to or lower than an assigned parity check protection level for the one input data stream, and a non zero matrix otherwise.
摘要翻译：一种用于多输入多输出（MIMO）系统中数据传输的方法。用于数据传输的方法包括利用奇偶校验矩阵来接收多个输入数据流并执行输入数据流的低密度奇偶校验（LDPC）编码。奇偶校验矩阵包括多个子奇偶校验矩阵，用于对各个相关的输入数据流进行编码，并执行空间时间编码，以在多个天线上发送LDPC编码的输入数据流。执行输入数据流的LDPC编码包括生成一个或多个连接矩阵，每个连接矩阵用于将输入数据流中的一个的信息注入到另一个输入数据流的编码中。如果基于用于输入数据流之一的子奇偶校验矩阵的最低奇偶校验保护级别等于或低于所述一个输入数据流的分配的奇偶校验保护级别，则每个连接矩阵是零矩阵，以及否则为非零矩阵。

7. 发明申请

US20100100789A1 METHOD AND SYSTEM FOR DATA TRANSMISSION IN A MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) SYSTEM 有权
标题翻译：用于多输入多输出（MIMO）系统中数据传输的方法和系统
公开(公告)号：US20100100789A1
公开(公告)日：2010-04-22
申请号：US12445277
申请日：2007-10-01
申请人： Qian Yu , Ping Luo , Masayuki Hoshino
发明人： Qian Yu , Ping Luo , Masayuki Hoshino
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H04B7/068 , H03M13/114 , H03M13/116 , H03M13/118 , H03M13/356 , H04L1/0041 , H04L1/0057 , H04L1/007 , H04L1/0625
摘要： A method for data transmission in a multiple input multiple output (MIMO) system. The method for data transmission includes receiving multiple input data streams and performing low density parity check (LDPC) encoding of the input data streams utilising a parity check matrix. The parity check matrix comprises a plurality of sub-parity check matrices for encoding respective associated ones of the input data streams and performing space time encoding for transmitting the LDPC encoded input data streams over a plurality of antennas. The performing of the LDPC encoding of the input data streams includes generating one or more connection matrices, each connection matrix for injecting information of one of the input data streams into the encoding of another one of the input data streams. Each connection matrix is a zero matrix if a lowest parity check protection level based on the sub-parity check matrix for the one of the input data streams is equal to or lower than an assigned parity check protection level for the one input data stream, and a non zero matrix otherwise.
摘要翻译：一种用于多输入多输出（MIMO）系统中数据传输的方法。用于数据传输的方法包括利用奇偶校验矩阵来接收多个输入数据流并执行输入数据流的低密度奇偶校验（LDPC）编码。奇偶校验矩阵包括多个子奇偶校验矩阵，用于对各个相关的输入数据流进行编码，并执行空间时间编码，用于在多个天线上发送LDPC编码的输入数据流。执行输入数据流的LDPC编码包括生成一个或多个连接矩阵，每个连接矩阵用于将输入数据流中的一个的信息注入到另一个输入数据流的编码中。如果基于用于输入数据流之一的子奇偶校验矩阵的最低奇偶校验保护级别等于或低于所述一个输入数据流的分配奇偶校验保护级别，则每个连接矩阵是零矩阵，以及否则为非零矩阵。

8. 发明授权

US08374275B2 Method and system for communication channel optimization in a multiple-input multiple-output (MIMO) communication system 有权
标题翻译：多输入多输出（MIMO）通信系统中通信信道优化的方法和系统
公开(公告)号：US08374275B2
公开(公告)日：2013-02-12
申请号：US12514515
申请日：2007-06-23
申请人： Qian Yu , Ping Luo , Masayuki Hoshino
发明人： Qian Yu , Ping Luo , Masayuki Hoshino
IPC分类号： H04B7/02 , H04B7/06 , H04L27/00
CPC分类号： H04B7/0417 , H04B7/0452 , H04B7/0634 , H04B7/0639
摘要： A transmission method in a multiple-input multiple-output (MIMO) communication system, a transmitter in a MIMO communication system and a MIMO communication system are provided. The method comprises the steps of: receiving feedback data representing channel state information from respective receivers of the MIMO communication system; grouping the receivers into one or more groups based on the received feedback data; obtaining a precoding matrix for each group of receivers based on the received feedback data such that precoding vectors or sub-matrices in the precoding matrix associated with respective receivers of said each group of receivers are orthogonal to each other; and applying the precoding matrix to input signals for transmission to said each group of receivers.
摘要翻译：提供了多输入多输出（MIMO）通信系统中的传输方法，MIMO通信系统中的发射机和MIMO通信系统。该方法包括以下步骤：从MIMO通信系统的各个接收机接收表示信道状态信息的反馈数据; 基于接收到的反馈数据将接收机分组成一个或多个组; 基于所接收的反馈数据获得每组接收机的预编码矩阵，使得与所述每组接收机的各接收机相关联的预编码矩阵中的预编码向量或子矩阵彼此正交; 以及将预编码矩阵应用于输入信号以传输到所述每组接收机。

9. 发明申请

US20100142633A1 METHOD AND SYSTEM FOR COMMUNICATION CHANNEL OPTIMIZATION IN A MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) COMMUNICATION SYSTEM 有权
标题翻译：用于多输入多输出（MIMO）通信系统中的通信信道优化的方法和系统
公开(公告)号：US20100142633A1
公开(公告)日：2010-06-10
申请号：US12514515
申请日：2007-06-23
申请人： Qian Yu , Ping Luo , Masayuki Hoshino
发明人： Qian Yu , Ping Luo , Masayuki Hoshino
IPC分类号： H04L27/28
CPC分类号： H04B7/0417 , H04B7/0452 , H04B7/0634 , H04B7/0639
摘要： A transmission method in a multiple-input multiple-output (MIMO) communication system, a transmitter in a MIMO communication system and a MIMO communication system are provided. The method comprises the steps of: receiving feedback data representing channel state information from respective receivers of the MIMO communication system; grouping the receivers into one or more groups based on the received feedback data; obtaining a precoding matrix for each group of receivers based on the received feedback data such that precoding vectors or sub-matrices in the precoding matrix associated with respective receivers of said each group of receivers are orthogonal to each other; and applying the precoding matrix to input signals for transmission to said each group of receivers.
摘要翻译：提供了多输入多输出（MIMO）通信系统中的传输方法，MIMO通信系统中的发射机和MIMO通信系统。该方法包括以下步骤：从MIMO通信系统的各接收机接收表示信道状态信息的反馈数据; 基于接收到的反馈数据将接收机分组成一个或多个组; 基于所接收的反馈数据获得每组接收机的预编码矩阵，使得与所述每组接收机的各接收机相关联的预编码矩阵中的预编码向量或子矩阵彼此正交; 以及将预编码矩阵应用于输入信号以传输到所述每组接收机。

10. 发明申请

US20100077275A1 METHOD AND SYSTEM FOR DATA TRANSMISSION IN A MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) SYSTEM 有权
标题翻译：用于多输入多输出（MIMO）系统中数据传输的方法和系统
公开(公告)号：US20100077275A1
公开(公告)日：2010-03-25
申请号：US12445275
申请日：2006-10-10
申请人： Qian Yu , Ping Luo , Masayuki Hoshino
发明人： Qian Yu , Ping Luo , Masayuki Hoshino
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H04B7/068 , H03M13/114 , H03M13/116 , H03M13/118 , H03M13/356 , H04L1/0041 , H04L1/0057 , H04L1/007 , H04L1/0625
摘要： A method for data transmission in a multiple input multiple output (MIMO) system, the method including, receiving multiple input data streams; performing low density parity check (LDPC) encoding of the input data streams utilising a parity check matrix, the parity check matrix including a plurality of sub-parity check matrices for encoding respective ones of the input data streams; and performing space time encoding for transmitting the LDPC encoded input data streams over a plurality of antennas.
摘要翻译：一种用于多输入多输出（MIMO）系统中数据传输的方法，所述方法包括：接收多个输入数据流; 使用奇偶校验矩阵对输入数据流进行低密度奇偶校验（LDPC）编码，所述奇偶校验矩阵包括用于编码各个输入数据流的多个子奇偶校验矩阵; 以及执行空间时间编码以在多个天线上发送LDPC编码的输入数据流。

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