公开(公告)号：US4689568A

公开(公告)日：1987-08-25

申请号：US750475

申请日：1985-07-01

申请人： Shigeru Matsui ,  Kensuke Sekihara ,  Hideki Kohno ,  Takashi Onodera ,  Hidemi Shiono

发明人： Shigeru Matsui ,  Kensuke Sekihara ,  Hideki Kohno ,  Takashi Onodera ,  Hidemi Shiono

IPC分类号： G01R33/44 ,  A61B5/055 ,  A61B10/00 ,  G01R33/48 ,  G01R33/485 ,  G01R33/561 ,  G01R33/20

CPC分类号： G01R33/485 ,  G01R33/5616

摘要： An NMR imaging method which provides a three-dimensional image representative of the two-dimensional distribution of nuclear spin species resolved by chemical shift or the local spectra resolved by two-dimensional location. After the excitation of nuclear spins and the phase-encoding by application of a field gradient G.sub.y, a periodically inverting field gradient G.sub.x is generated to yield a continuous echo train. The echo train is sampled and separated into data of odd-numbered echoes and data of even-numbered echoes which data are in turn reconstructed into two-dimensional data arrays, respectively. The data thus reconstructed are three-dimensional Fourier-transformed.

摘要翻译： 提供表示通过化学位移分解的核自旋物质的二维分布的三维图像的NMR成像方法或通过二维位置解析的局部光谱。 在核自旋的激励和通过施加场梯度Gy的相位编码之后，产生周期性反转场梯度Gx以产生连续的回波串。 回波串被采样并分离成奇数回波的数据和偶数回波的数据，数据又分别被重建成二维数据阵列。 这样重建的数据是三维傅里叶变换的。

公开(公告)号：US4797616A

公开(公告)日：1989-01-10

申请号：US151901

申请日：1988-02-03

申请人： Shigeru Matsui ,  Takashi Onodera ,  Kensuke Sekihara ,  Hidemi Shiono ,  Hideki Kohno

发明人： Shigeru Matsui ,  Takashi Onodera ,  Kensuke Sekihara ,  Hidemi Shiono ,  Hideki Kohno

IPC分类号： G01R33/32 ,  A61B5/055 ,  A61B10/00 ,  G01R33/44 ,  G01R33/48 ,  G01R33/485 ,  G01R33/20

CPC分类号： G01R33/485

摘要： An NMR spectroscopic imaging method of obtaining separate spin distribution images for respective spectral components of the spectrum of an NMR signal caused by the chemical shift of nuclides of interest in an object includes providing for a transversal magnetization signal of the object placed in a static magnetic field. A position of the signal in a phase domain is translated in a K-space from the origin thereof. Further, the signal is sampled while rotating a position of the signal in the K-space plural times on a certain circle in the K-space by applying a rotating field gradient, thereby to obtain a group of signal data. Signal data trains each of which is composed of signal data present at the same position on the K-space in the signal data group obtained by the sampling during the plural signal rotations, is subjected to Fourier transformations, respectively, thereby effecting a spectral analysis of the NMR signal.

摘要翻译： 由对象物质的化学位移引起的核磁共振信号频谱的各频谱分量的分离自旋分布图像的NMR分光成像方法包括提供放置在静磁场中的物体的横向磁化信号 。 信号在相位域中的位置从其原点在K空间中平移。 此外，在通过施加旋转场梯度在K空间中的某个圆上多次旋转K空间中的信号的位置的同时对信号进行采样，从而获得一组信号数据。 由多个信号旋转中的采样获得的信号数据组中的与K空间上的相同位置处的信号数据组成的信号数据串分别进行傅里叶变换，从而进行频谱分析 NMR信号。

公开(公告)号：US5109197A

公开(公告)日：1992-04-28

申请号：US578766

申请日：1990-09-07

申请人： Takashi Onodera ,  Hidemi Shiono ,  Hideki Kohno

发明人： Takashi Onodera ,  Hidemi Shiono ,  Hideki Kohno

IPC分类号： A61B5/055 ,  G01R33/48 ,  G01R33/565

CPC分类号： G01R33/56554

摘要： A nuclear magnetic resonance multi-echo imaging method and an apparatus therefor in which gradient field pulses having predetermined products of intensity and time are applied on both sides of an inversion pulse in at least two of three directions which are orthogonal to each other to dephase components of a magnetization vector which leads to an artifact signal and an error signal, whereby only a normal echo signal can be sampled to form a correct image.

公开(公告)号：US4777443A

公开(公告)日：1988-10-11

申请号：US119489

申请日：1987-11-12

申请人： Masao Yabusaki ,  Etsuji Yamamoto ,  Takashi Onodera ,  Yukiko Ogura ,  Hideaki Nakane ,  Shigeru Matsui ,  Hideki Kohno

发明人： Masao Yabusaki ,  Etsuji Yamamoto ,  Takashi Onodera ,  Yukiko Ogura ,  Hideaki Nakane ,  Shigeru Matsui ,  Hideki Kohno

IPC分类号： G01R33/035 ,  G01R33/36 ,  G01R33/20

CPC分类号： G01R33/326 ,  G01R33/0358

摘要： Disclosed in a nuclear magnetic resonance (NMR) based inspection apparatus using an SQUID flux meter for detecting a small NMR signal, in which a receiving coil for receiving the NMR signal from an object is connected to a mixer, which mixes a reference high-frequency signal with the NMR signal so that the NMR signal is reduced to a low-frequency signal having a differential component of frequencies of both signals, and the low-frequency signal is applied to the input coil of the SQUID flux meter so that it is converted into a voltage signal. The mixer circuit includes Schottky diodes operative at a liquid helium temperature or Josephson junctions, and the portions of apparatus from the reception coil up to the SQUID flux meter are operated in a superconductive state at a liquid helium temperature.

摘要翻译： 在使用SQUID通量计检测小型NMR信号的基于核磁共振（NMR）的检查装置中公开了一种用于从物体接收NMR信号的接收线圈连接到混频器，该混频器将参考高频 用NMR信号进行信号，使得NMR信号被减少到具有两个信号的频率的差分分量的低频信号，并且低频信号被施加到SQUID通量计的输入线圈，使得其被转换 变成电压信号。 混频器电路包括以液氦温度或约瑟夫逊结操作的肖特基二极管，并且从接收线圈到SQUID通量计的装置部分在液氦温度下处于超导状态。

公开(公告)号：US4752735A

公开(公告)日：1988-06-21

申请号：US946957

申请日：1986-12-29

申请人： Takashi Onodera ,  Shigeru Matsui ,  Hideki Kohno

发明人： Takashi Onodera ,  Shigeru Matsui ,  Hideki Kohno

IPC分类号： A61B5/055 ,  A61B10/00 ,  G01R33/24 ,  G01R33/387 ,  G01R33/565 ,  G01R33/20

CPC分类号： G01R33/56518 ,  G01R33/24

摘要： Method for measuring the time dependence of an oscillating field gradient and representatively its integral function with respect to time for imaging method using the field gradient such as rapid chemical shift imaging method echo planar method, etc. A uniform specimen is placed within a coil of an NMR device, in which nuclear spins are excited; a phase encoding field gradient is applied thereto; and signals are sampled under application of the field gradient to be measured. These steps are repeated and an integral function of the field gradient with respect to time is obtained by using the peak position in the series of data obtained by this repetition.

摘要翻译： 用于使用诸如快速化学位移成像方法回波平面法等场梯度的成像方法来测量振荡场梯度的时间依赖性和代表性的其积分函数的方法。将均匀的样本放置在 其中核自旋激发的NMR装置; 应用相位编码场梯度; 并且在应用待测量的场梯度下对信号进行采样。 重复这些步骤，通过使用通过该重复获得的一系列数据中的峰值位置获得相对于时间的场梯度的积分函数。

公开(公告)号：US4748412A

公开(公告)日：1988-05-31

申请号：US16401

申请日：1987-02-19

申请人： Etsuji Yamamoto ,  Takashi Onodera ,  Hideki Kohno

发明人： Etsuji Yamamoto ,  Takashi Onodera ,  Hideki Kohno

IPC分类号： G01R33/34 ,  A61B5/055 ,  A61B10/00 ,  G01R33/343 ,  G01R33/20

CPC分类号： G01R33/343

摘要： An Alderman high-frequency coil used for generating or detecting a high-frequency magnetic field in an NMR apparatus comprises two ring-shaped inner conductors aligned coaxially with a spacing being made therebetween and two outer conductors disposed to surround the inner conductors. The outer conductors are each split along the current path to form a 4-piece outer conductor.

摘要翻译： 用于在NMR装置中产生或检测高频磁场的Alderman高频线圈包括两个环形内部导体，两个环形内部导体与其间形成间隔同轴并且设置成包围内部导体的两个外部导体。 外导体分别沿着电流路径分开以形成4片外导体。

公开(公告)号：US09178587B2

公开(公告)日：2015-11-03

申请号：US13582259

申请日：2011-01-31

申请人： Hiroshi Nakano ,  Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiromichi Tomeba

发明人： Hiroshi Nakano ,  Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiromichi Tomeba

IPC分类号： H04W4/00 ,  H04B7/04 ,  H04J11/00 ,  H04L25/03 ,  H04B7/06 ,  H04L5/00

CPC分类号： H04B7/0452 ,  H04B7/0697 ,  H04J11/0033 ,  H04L5/0023 ,  H04L5/0051 ,  H04L25/03305

摘要： The disclosed is a transmission device including a plurality of transmission antennas for transmitting signals in the same channel at the same time point to a plurality of reception devices, characterized by including: a dedicated reference signal generator configured to generate dedicated reference signals for the respective reception devices; a data signal generator configured to generate data signals for the respective reception devices; a spatial multiplexer configured to spatially multiplex at least some of the dedicated reference signals and at least some of the data signals; and a transmitter configured to transmit the spatially multiplexed signals.

摘要翻译： 所公开的是一种发送装置，其包括：多个发送天线，用于在同一时间点向多个接收装置发送同一信道中的信号，其特征在于包括：专用参考信号发生器，被配置为产生用于各个接收的专用参考信号 设备; 数据信号发生器，被配置为生成各个接收装置的数据信号; 空间多路复用器，被配置为空间复用所述专用参考信号和所述数据信号中的至少一些信号中的至少一些; 以及被配置为发送所述空间复用信号的发射机。

公开(公告)号：US20130336418A1

公开(公告)日：2013-12-19

申请号：US14002616

申请日：2012-03-02

申请人： Hiromichi Tomeba ,  Takashi Onodera ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado ,  Shimpei To

发明人： Hiromichi Tomeba ,  Takashi Onodera ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado ,  Shimpei To

IPC分类号： H04B7/04

CPC分类号： H04B7/0482 ,  H04B7/0452 ,  H04B7/0465 ,  H04B7/0632 ,  H04B7/0697 ,  H04L1/0003

摘要： A terminal device notifies a base station device about control information associated with a receive quality of the terminal device. The base station device performs data modulation on a plurality of pieces of transmit data for the terminal device, by using a plurality of different data modulation schemes one by one, based on the control information, and spatially multiplexes the plurality of pieces of transmit data after the data modulation over a single wireless resource and transmits a spatially multiplexed signal. The terminal device receives the signal with the plurality of pieces of transmit data spatially multiplexed, and detects desirable transmit data from the receive signal, based on a first channel matrix which represents channel state information between the base station device and the terminal device and a second channel matrix in which the first channel matrix is multiplied by a transform matrix. Accordingly, an adaptive modulation technology is applied even to MIMO spatial multiplexing transmission using a LR technology, and hence a wireless communication system and so forth that can contribute to improvement in frequency utilization efficiency can be provided.

摘要翻译： 终端装置向基站装置通知与终端装置的接收质量有关的控制信息。 基站装置基于控制信息，通过使用多个不同的数据调制方案，对终端装置的多条发送数据进行数据调制，并且将多条发送数据在 通过单个无线资源进行数据调制，并发送空间复用信号。 终端设备接收具有多个发送数据的信号进行空间复用，并且基于表示基站设备与终端设备之间的信道状态信息的第一信道矩阵和第二信道矩阵，从接收信号中检测期望的发送数据 信道矩阵，其中第一信道矩阵乘以变换矩阵。 因此，利用LR技术甚至可以应用自适应调制技术进行MIMO空间复用传输，因此可以提供有助于提高频率利用效率的无线通信系统等。

公开(公告)号：US20130286949A1

公开(公告)日：2013-10-31

申请号：US13989516

申请日：2011-11-24

申请人： Hiromichi Tomeba ,  Shimpei To ,  Takashi Onodera ,  Hideo Namba ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado

发明人： Hiromichi Tomeba ,  Shimpei To ,  Takashi Onodera ,  Hideo Namba ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado

IPC分类号： H04W72/04 ,  H04B7/04

CPC分类号： H04W72/0406 ,  H04B7/0452 ,  H04B7/0626 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/03343 ,  H04L25/03891 ,  H04L2025/03426 ,  H04W48/16 ,  H04W52/42 ,  H04W88/02 ,  H04W88/08

摘要： A wireless communication system includes a base station apparatus having a plurality of antennas and a plurality of mobile station apparatuses each having, at least, one antenna. The base station apparatus acquires channel state information of the plurality of mobile station apparatuses, based on any one of a plurality of different channel state information formats, and, separately precodes data signals addressed to the plurality of mobile station apparatuses based on the channel state information, and spatially multiplexes and transmits the precoded signals. The mobile station apparatus receives the precoded signals and detects a desired data signal from the multiplexed signals addressed to mobile station apparatuses, based on the channel state information. With this scheme, it is possible to realize a new spatial multiplexing technology that enables a plurality of mobile station apparatuses using different CSI feedback schemes to be spatially multiplexed on the same wireless resource in the downlink MU-MIMO transmission.

摘要翻译： 无线通信系统包括具有多个天线的基站装置和至少具有一个天线的多个移动台装置。 基站装置基于多种不同的信道状态信息格式中的任何一种来获取多个移动台装置的信道状态信息，并且基于信道状态信息分别对寻址到多个移动台装置的数据信号进行预编码 ，并空间复用并传输预编码信号。 移动站装置根据信道状态信息接收预编码信号，并从寻址到移动台装置的复用信号中检测出期望的数据信号。 利用该方案，可以实现在下行链路MU-MIMO传输中使能使用不同CSI反馈方案的多个移动台装置在同一无线资源上进行空间多路复用的新的空间复用技术。

公开(公告)号：US20130286940A1

公开(公告)日：2013-10-31

申请号：US13877368

申请日：2011-10-03

申请人： Shimpei To ,  Takashi Onodera ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota ,  Kozue Hirata ,  Alvaro Ruiz Delgado

发明人： Shimpei To ,  Takashi Onodera ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota ,  Kozue Hirata ,  Alvaro Ruiz Delgado

IPC分类号： H04B7/04

CPC分类号： H04B7/0417 ,  H04B7/0452 ,  H04B7/065

摘要： A wireless communication system in which a base station apparatus having a plurality of transmission antennas and one or more terminal apparatuses communicate with each other is provided with at least two methods of a first feedback method and a second feedback method regarding propagation path information at the time of reception. In accordance with a communication condition between the base station apparatus and the terminal apparatus, or the function of the terminal apparatus, the terminal apparatus performs feedback by one of the two methods of the first feedback method and the second feedback method. The base station apparatus performs spatial multiplexing transmission on the basis of the propagation path information that has been fed back. Thus, in a system in which CSI is fed back for MIMO transmission, desired transmission characteristics can be efficiently obtained.

摘要翻译： 具有多个发送天线和一个以上的终端装置的基站装置相互通信的无线通信系统具备关于该时刻的传播路径信息的第一反馈方法和第二反馈方法的至少两种方法 的接待。 根据基站装置与终端装置之间的通信条件或终端装置的功能，终端装置通过第一反馈方法和第二反馈方法的两种方法之一进行反馈。 基站装置根据反馈的传播路径信息进行空间复用传输。 因此，在反馈用于MIMO传输的系统中，可以有效地获得期望的传输特性。