公开(公告)号：US08125963B2

公开(公告)日：2012-02-28

申请号：US10567339

申请日：2004-07-29

申请人： Yoshitaka Hara ,  Akinori Taira ,  Tomoaki Otsuki ,  Kenji Sudo

发明人： Yoshitaka Hara ,  Akinori Taira ,  Tomoaki Otsuki ,  Kenji Sudo

IPC分类号： H04W4/00

CPC分类号： H04B7/0639 ,  H04B7/061 ,  H04B7/0684 ,  H04B7/0691 ,  H04B7/0695 ,  H04L1/0001 ,  H04L1/0025 ,  H04W52/42

摘要： A radio communication method and apparatus generate a plurality of information signals and transmit the signals to a communication partner from a plurality of antennas. A plurality of combination of signals to be transmitted are selected. A transmission evaluation value is determined based on the signal noise ratio of each signal. After all combinations are evaluated, a transmission format suitable for sending a combination of signals is determined based on a highest evaluation value.

摘要翻译： 无线电通信方法和装置产生多个信息信号，并将信号从多个天线发送到通信伙伴。 选择要发送的信号的多个组合。 基于每个信号的信号噪声比来确定传输评估值。 在评估所有组合之后，基于最高评估值确定适于发送信号组合的传输格式。

公开(公告)号：US20090196368A1

公开(公告)日：2009-08-06

申请号：US12385350

申请日：2009-04-06

申请人： Yoshitaka Hara ,  Akinori Taira ,  Tomoaki Otsuki ,  Kenji Suto

发明人： Yoshitaka Hara ,  Akinori Taira ,  Tomoaki Otsuki ,  Kenji Suto

IPC分类号： H04L27/28

CPC分类号： H04B7/0639 ,  H04B7/061 ,  H04B7/0684 ,  H04B7/0691 ,  H04B7/0695 ,  H04L1/0001 ,  H04L1/0025 ,  H04W52/42

摘要： Conventionally, if the number of transmission antennas is greater than that of reception antennas, different signals simultaneously transmitted from the transmission antennas cannot be separated from one another at the receiving end, resulting in a significant degradation of received-signal quality. A transmitter and a receiver each have a plurality of antennas. The transmitter transmits a pilot signal. The receiver receives the pilot signal, calculates transmission-related information corresponding to the pilot signal, selects, based on this calculated information, a transmission signal to be used by the transmitter, and notifies the transmitter of the selected signal. The transmitter selects, from the informed transmission signal, transmission antennas and uses the selected antennas to transmit information signals, so that a signal separation can be easily performed at the receiving end.

摘要翻译： 通常，如果发送天线的数量大于接收天线的数量，则从发送天线同时发送的不同信号在接收端不能彼此分离，导致接收信号质量的显着劣化。 发射机和接收机各具有多个天线。 发射机发射导频信号。 接收器接收导频信号，计算与导频信号对应的发送相关信息，根据该计算出的信息，选择发送机使用的发送信号，并向发送机通知所选择的信号。 发射机从通知的发送信号中选择发送天线，并使用所选择的天线来发送信息信号，从而可以容易地在接收端执行信号分离。

公开(公告)号：US08385295B2

公开(公告)日：2013-02-26

申请号：US13369352

申请日：2012-02-09

申请人： Yoshitaka Hara ,  Akinori Taira ,  Tomoaki Otsuki ,  Kenji Suto

发明人： Yoshitaka Hara ,  Akinori Taira ,  Tomoaki Otsuki ,  Kenji Suto

IPC分类号： H04W4/00

CPC分类号： H04B7/0639 ,  H04B7/061 ,  H04B7/0684 ,  H04B7/0691 ,  H04B7/0695 ,  H04L1/0001 ,  H04L1/0025 ,  H04W52/42

摘要： Conventionally, if the number of transmission antennas is greater than that of reception antennas, different signals simultaneously transmitted from the transmission antennas cannot be separated from one another at the receiving end, resulting in a significant degradation of received-signal quality. A transmitter and a receiver each have a plurality of antennas. The transmitter transmits a pilot signal. The receiver receives the pilot signal, calculates transmission-related information corresponding to the pilot signal, selects, based on this calculated information, a transmission signal to be used by the transmitter, and notifies the transmitter of the selected signal. The transmitter selects, from the informed transmission signal, transmission antennas and uses the selected antennas to transmit information signals, so that a signal separation can be easily performed at the receiving end.

公开(公告)号：US20080056217A1

公开(公告)日：2008-03-06

申请号：US10567339

申请日：2004-07-29

申请人： Yoshitaka Hara ,  Akinori Taira ,  Tomoaki Otsuki ,  Kenji Suto

发明人： Yoshitaka Hara ,  Akinori Taira ,  Tomoaki Otsuki ,  Kenji Suto

IPC分类号： H04B7/216 ,  H04B7/00

CPC分类号： H04B7/0639 ,  H04B7/061 ,  H04B7/0684 ,  H04B7/0691 ,  H04B7/0695 ,  H04L1/0001 ,  H04L1/0025 ,  H04W52/42

摘要： Conventionally, if the number of transmission antennas is greater than that of reception antennas, different signals simultaneously transmitted from the transmission antennas cannot be separated from one another at the receiving end, resulting in a significant degradation of received-signal quality. A transmitter and a receiver each have a plurality of antennas. The transmitter transmits a pilot signal. The receiver receives the pilot signal to calculate transmission-related information corresponding to the pilot signal, and then selects, based on this calculated information, a signal to be sent to and utilized by the transmitter. The receiver then informs the selected signal to the transmitter. The transmitter selects, from the informed signal, transmission antennas and uses them to transmit information signals, so that a signal separation can be easily performed at the receiving end.

摘要翻译： 通常，如果发送天线的数量大于接收天线的数量，则从发送天线同时发送的不同信号在接收端不能彼此分离，导致接收信号质量的显着劣化。 发射机和接收机各具有多个天线。 发射机发射导频信号。 接收器接收导频信号以计算与导频信号相对应的传输相关信息，然后根据该计算出的信息选择发送给发射机并由发射机利用的信号。 然后，接收器将所选择的信号通知给发射机。 发射机从通知信号中选择发送天线，并使用它们发送信息信号，从而可以容易地在接收端执行信号分离。