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41. 发明授权

US08594242B2 Method of receiving modulation symbols 有权
标题翻译：接收调制符号的方法
公开(公告)号：US08594242B2
公开(公告)日：2013-11-26
申请号：US13409034
申请日：2012-02-29
申请人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka
发明人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04L27/00
CPC分类号： H04L25/0204 , H04B7/0413 , H04B7/06 , H04B7/0626 , H04B7/0632 , H04B7/0671 , H04B7/0689 , H04B7/0697 , H04B7/082 , H04L1/0618 , H04L5/0023 , H04L5/003 , H04L5/0048 , H04L25/0206 , H04L27/04 , H04L27/06 , H04L27/12 , H04L27/14 , H04L27/18 , H04L27/2601 , H04L27/2602 , H04L27/2627 , H04L27/2649 , H04L27/2657 , H04L27/2659 , H04L27/2691 , H04L27/2695 , H04L69/22 , H04W52/52 , H04W72/0453
摘要： A method for receiving modulation signals includes receiving a plurality of multiplexed modulation signals each transmitted from multiple antennas of a communication partner, wherein each modulation signal includes a pilot symbol sequence consisting of plural pilot symbols used for demodulation. Each of the pilot symbol sequences is inserted at the same temporal points in the each modulation signal. The pilot symbol sequences are orthogonal to each other with zero cross correlation among the plurality of modulation signals, each pilot symbol having a non-zero amplitude, the quantity of the plural pilot symbols in each sequence being greater than the quantity of the plurality of transmitted modulation signals. The method further includes estimating a transmission path distortion of the each modulation signal based on the plurality of received multiplexed modulation signals; and demodulating the each modulation signal including the plurality of received multiplexed modulation signals using the transmission path distortion.
摘要翻译：一种用于接收调制信号的方法包括接收从通信对方的多个天线发送的多个多路调制信号，其中每个调制信号包括由用于解调的多个导频符号组成的导频符号序列。导频符号序列中的每一个在每个调制信号的相同的时间点被插入。导频符号序列在多个调制信号之间以零互相关方式彼此正交，每个导频符号具有非零幅度，每个序列中的多个导频符号的数量大于多个发送的数量调制信号。该方法还包括基于多个接收的复用调制信号来估计每个调制信号的传输路径失真; 以及使用传输路径失真来解调包括多个接收的复用调制信号的每个调制信号。

42. 发明授权

US08532219B2 Transmitting apparatus, transmitting method, receiving apparatus, and receiving method 有权
标题翻译：发送装置，发送方法，接收装置和接收方法
公开(公告)号：US08532219B2
公开(公告)日：2013-09-10
申请号：US13586442
申请日：2012-08-15
申请人： Yutaka Murakami , Kiyotaka Kobayashi , Masayuki Orihashi , Akihiko Matsuoka
发明人： Yutaka Murakami , Kiyotaka Kobayashi , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04B7/02
CPC分类号： H04L27/0008 , H04B7/0413 , H04B7/0417 , H04B7/0669 , H04L1/0006 , H04L1/0026 , H04L1/06 , H04L1/0618 , H04L1/08 , H04L5/0046 , H04L27/3405 , H04W52/42
摘要： Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)′ obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.
摘要翻译：从第一天线发送调制信号A，从第二天线发送调制信号B. 作为调制信号B，分别在时间i和时间i + 1发送从不同数据获得的调制符号S2（i）和S2（i + 1）。相反，作为调制信号A，分别在时间i和时间i + 1发送通过改变相同数据的信号点排列获得的调制符号S1（i）和S1（i）'。结果，可以在时间i和时间i + 1有意地改变接收质量，因此当接收质量好的时候使用调制信号A的解调结果使得调制信号A和B能够被良好地解调错误率表现。

43. 发明授权

US08295391B2 Transmission method and transmission apparatus 有权
标题翻译：传输方法和传输设备
公开(公告)号：US08295391B2
公开(公告)日：2012-10-23
申请号：US13176459
申请日：2011-07-05
申请人： Yutaka Murakami , Kiyotaka Kobayashi , Masayuki Orihashi , Akihiko Matsuoka
发明人： Yutaka Murakami , Kiyotaka Kobayashi , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04L27/00
CPC分类号： H04B7/0413 , H04B7/0608 , H04B7/0613 , H04B7/0689 , H04B7/0697 , H04L1/06
摘要： Of any one of transmission method X of transmitting modulated signal A and modulated signal B including the same data from a plurality of antennas and transmission method Y of transmitting modulated signal A and modulated signal B having different data from the plurality of antennas, base station apparatus 201 does not change the transmission method during data transmission and changes only the modulation scheme. Base station apparatus 201 transmits modulated signal A and modulated signal B to communication terminal apparatus 251 using the determined transmission method and modulation scheme. In this way, it is possible to improve data transmission efficiency when transmitting data using the plurality of antennas.
摘要翻译：发送调制信号A的发送方法X和包含来自多个天线的相同数据的调制信号B和从多个天线发送调制信号A和调制信号B的数据不同的发送方式Y中的任一种，基站装置 201在数据传输期间不改变传输方法，并且仅改变调制方案。基站装置201使用确定的发送方法和调制方式向调制信号A和调制信号B发送到通信终端装置251。以这种方式，可以在使用多个天线发送数据时提高数据传输效率。

44. 发明授权

US08095833B2 Transmitting apparatus, receiving apparatus, transmission method, and reception method 有权
标题翻译：发送装置，接收装置，发送方法和接收方法
公开(公告)号：US08095833B2
公开(公告)日：2012-01-10
申请号：US12199518
申请日：2008-08-27
申请人： Yutaka Murakami , Katsuaki Abe , Masayuki Orihashi , Akihiko Matsuoka
发明人： Yutaka Murakami , Katsuaki Abe , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： G01R31/28 , G06F11/00 , H03M13/00 , H04B14/04
CPC分类号： H04L1/0041 , H04L1/0003 , H04L1/0009 , H04L1/0025 , H04L1/0039 , H04L1/0058 , H04L1/0079 , H04L1/0083 , H04L1/08 , H04L27/0008 , H04L27/0012 , H04L27/20 , H04L27/2608 , Y02D50/10
摘要： A transmission method includes generating a control information signal relating to control information of a data signal. A transmission frame is formed by repeating and discretely arranging the same control information signal. The data signal and the control information signal are transmitted using the transmission frame.
摘要翻译：传输方法包括产生与数据信号的控制信息相关的控制信息信号。通过重复和离散地布置相同的控制信息信号来形成传输帧。使用发送帧发送数据信号和控制信息信号。

45. 发明授权

US07953177B2 Radio communication apparatus capable of switching modulation schemes 有权
标题翻译：能够切换调制方式的无线通信装置
公开(公告)号：US07953177B2
公开(公告)日：2011-05-31
申请号：US12757509
申请日：2010-04-09
申请人： Yutaka Murakami , Shinichiro Takabayashi , Katsuaki Abe , Masayuki Orihashi , Akihiko Matsuoka
发明人： Yutaka Murakami , Shinichiro Takabayashi , Katsuaki Abe , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04L25/49 , H04L27/36 , H04L27/20 , H04L23/00
CPC分类号： H04L27/3405 , H03F1/02 , H03F3/24 , H04B1/0475 , H04B2001/0416 , H04B2001/045 , H04L1/0003 , H04L27/2082 , H04L27/2601 , H04L27/34 , H04L27/3494 , H04L2203/00
摘要： A radio communication apparatus that is capable of switching modulation schemes. The radio communication apparatus includes a QPSK modulation signal generator, a QAM modulation signal generator, a transmission radio, and a common transmission power amplifier. The QPSK modulation signal generator modulates transmission data by a QPSK modulation scheme and outputs a QPSK modulation signal. The QAM modulation signal generator modulates transmission data by a QAM scheme and outputs a QAM modulation signal. The transmission radio receives the QPSK modulation signal or the QAM modulation signal and outputs a transmission signal, which is amplified by the common transmission power amplifier. The QPSK modulation signal generator and the QAM modulation signal generator each output signal component that make an average transmission power of the QAM modulation signal in the common transmission power amplifier smaller than an average transmission power of the QPSK modulation signal in the common transmission power amplifier.
摘要翻译：一种能够切换调制方案的无线通信装置。无线通信装置包括QPSK调制信号发生器，QAM调制信号发生器，发送无线电和公共发送功率放大器。 QPSK调制信号生成器通过QPSK调制方式来调制发送数据并输出QPSK调制信号。 QAM调制信号发生器通过QAM方式来调制发送数据并输出QAM调制信号。发送无线电接收QPSK调制信号或QAM调制信号，并输出由公共发送功率放大器放大的发送信号。 QPSK调制信号发生器和QAM调制信号发生器使公共发送功率放大器中的QAM调制信号的平均发送功率小于公共发送功率放大器中的QPSK调制信号的平均发送功率的各输出信号分量。

46. 发明申请

US20110044412A1 MULTI-ANTENNA RECEPTION APPARATUS, MULTI-ANTENNA RECEPTION METHOD, MULTI-ANTENNA TRANSMISSION APPARATUS AND MULTI-ANTENNA COMMUNICATION SYSTEM 有权
标题翻译：多天线接收装置，多天线接收方法，多天线发射装置和多天线通信系统
公开(公告)号：US20110044412A1
公开(公告)日：2011-02-24
申请号：US12917248
申请日：2010-11-01
申请人： Yutaka Murakami , Kiyotaka Kobayashi , Masayuki Orihashi , Akihiko Matsuoka , Daichi Imamura , Rahul Malik
发明人： Yutaka Murakami , Kiyotaka Kobayashi , Masayuki Orihashi , Akihiko Matsuoka , Daichi Imamura , Rahul Malik
IPC分类号： H04B7/10
CPC分类号： H04B7/0413 , H04B7/0851 , H04L1/0057 , H04L1/0071 , H04L1/0086 , H04L1/0618 , H04L1/1819 , H04L5/0023 , H04L25/03229 , H04L25/03305 , H04L25/03324 , H04L25/03891 , H04L27/2628 , H04L27/265 , H04L2025/03414 , H04L2025/03611
摘要： Soft decision sections (503, 506) provisionally decide each modulated signal (502, 505) separated using an inverse matrix calculation of a channel fluctuation matrix at separation section (501). Signal point reduction sections (508, 510, 514, 516) reduce candidate signal points of a multiplexed modulated signal using the provisional decision results (504, 507). Soft decision sections (512, 518) make a correct decision using the reduced candidate signal points and obtain received data (RA, RB) of each modulated signal. This allows received data RA, RB with a good error rate characteristic to be obtained with a relatively small number of calculations without reducing data transmission efficiency.
摘要翻译：软判决部分（503,506）临时确定在分离部分（501）处使用信道波动矩阵的逆矩阵计算分离的每个调制信号（502,505）。信号点减少部分（508,510,514,516）使用临时决策结果（504,507）来减少复用的调制信号的候选信号点。软判决部分（512,518）使用减小的候选信号点进行正确的判定，并获得每个调制信号的接收数据（RA，RB）。这允许以相对较少数量的计算获得具有良好错误率特性的接收数据RA，RB，而不降低数据传输效率。

47. 发明申请

US20100260278A1 COMMUNICATION APPARATUS AND COMMUNICATION METHOD 有权
标题翻译：通信设备和通信方法
公开(公告)号：US20100260278A1
公开(公告)日：2010-10-14
申请号：US12824047
申请日：2010-06-25
申请人： Yutaka Murakami , Kiyotaka Kobayashi , Masayuki Orihashi , Akihiko Matsuoka
发明人： Yutaka Murakami , Kiyotaka Kobayashi , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04L27/28
CPC分类号： H04L27/0008 , H04B7/0413 , H04B7/0417 , H04B7/0669 , H04L1/0006 , H04L1/0026 , H04L1/06 , H04L1/0618 , H04L1/08 , H04L5/0046 , H04L27/3405 , H04W52/42
摘要： Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)′ obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.
摘要翻译：从第一天线发送调制信号A，从第二天线发送调制信号B. 作为调制信号B，分别在时间i和时间i + 1发送从不同数据获得的调制符号S2（i）和S2（i + 1）。相反，作为调制信号A，分别在时间i和时间i + 1发送通过改变相同数据的信号点排列获得的调制符号S1（i）和S1（i）'。结果，可以在时间i和时间+ 1有意地改变接收质量，因此当接收质量好的时候使用调制信号A的解调结果使得能够以良好的误差解调调制信号A和B 率表现。

48. 发明授权

US07515714B2 Communication apparatus and communication system 有权
标题翻译：通信设备和通信系统
公开(公告)号：US07515714B2
公开(公告)日：2009-04-07
申请号：US10502048
申请日：2003-02-27
申请人： Masayuki Orihashi , Yutaka Murakami , Katsuaki Abe , Akihiko Matsuoka
发明人： Masayuki Orihashi , Yutaka Murakami , Katsuaki Abe , Akihiko Matsuoka
IPC分类号： H04F9/00
CPC分类号： H04B1/7113 , H04B1/7115 , H04K1/00 , H04L9/0858 , H04L2209/60 , H04L2209/80 , H04W12/04
摘要： A communication apparatus includes a reference signal generating section, a transmitting section, a propagation estimating section, a first data acquiring section, and a decoding section. The reference signal generating section generates a first reference signal to enable a communicating party to estimate a propagation environment. The transmitting section transmits the first reference signal. The propagation estimating section estimates a first propagation estimation value of the propagation environment using a second reference signal transmitted from the communicating party. The first data acquiring section generates first data using the first propagation estimation value. The decoding section decodes a transmission signal encoded using a second propagation estimation value that is estimated by the communicating party using the first reference signal, to obtain second data using the first data.
摘要翻译：通信装置包括参考信号产生部分，发送部分，传播估计部分，第一数据获取部分和解码部分。参考信号产生部分生成第一参考信号以使通信方能够估计传播环境。发送部发送第一参考信号。传播估计部使用从通信对方发送的第二参考信号来估计传播环境的第一传播估计值。第一数据获取部使用第一传播估计值来生成第一数据。解码部分使用由第一参考信号由通信方估计的第二传播估计值来编码的传输信号，以使用第一数据来获得第二数据。

49. 发明申请

US20090074086A1 MIMO-OFDM TRANSMISSION DEVICE AND MIMO-OFDM TRANSMISSION METHOD 有权
标题翻译： MIMO-OFDM传输设备和MIMO-OFDM传输方法
公开(公告)号：US20090074086A1
公开(公告)日：2009-03-19
申请号：US11577791
申请日：2005-08-24
申请人： Yutaka Murakami , Kiyotaka Kobayashi , Masayuki Orihashi
发明人： Yutaka Murakami , Kiyotaka Kobayashi , Masayuki Orihashi
IPC分类号： H04L27/28
CPC分类号： H04L5/0048 , H04B7/0413 , H04B2201/70701 , H04J13/18 , H04L5/0007 , H04L5/0023 , H04L25/0206 , H04L27/2613 , H04L27/2628 , H04L27/265 , H04L27/2657 , H04L2027/0024
摘要： A MIMO-OFDM transmission apparatus is provided which allows high accuracy estimation of frequency offset, high accuracy estimation of a transmission path fluctuation and high accuracy synchronization/signal detection.Pilot symbol mapping (1111) is provided for forming pilot carriers by assigning orthogonal sequences to corresponding subcarriers among OFDM signals which are transmitted at the same time from respective antennas in the time domain.Even when pilot symbols are multiplexed among a plurality of channels (antennas), this allows frequency offset/phase noise to be estimated with high accuracy.
摘要翻译：提供了MIMO-OFDM发送装置，其允许频率偏移的高精度估计，传输路径波动的高精度估计和高精度同步/信号检测。提供导频符号映射（1111），用于通过在从时域中的各个天线同时发送的OFDM信号中分配正交序列到对应的子载波来形成导频载波。即使在多个信道（天线）中复用导频符号的情况下，也能够高精度地估计频率偏移/相位噪声。

50. 发明授权

US07362824B1 Modulation method and radio communication system 有权
标题翻译：调制方式和无线电通信系统
公开(公告)号：US07362824B1
公开(公告)日：2008-04-22
申请号：US09240632
申请日：1999-02-01
申请人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
发明人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
IPC分类号： H04L27/20
CPC分类号： H04L27/0008 , H04L25/0232 , H04L27/34
摘要： An input digital signal is periodically and alternately subjected to first modulation and second modulation, being thereby converted into a pair of a baseband I signal and a baseband Q signal. The first modulation and the second modulation are different from each other. The pair of the baseband I signal and the baseband Q signal are outputted. The first modulation may be at least 8-signal-point modulation while the second modulation may be phase shift keying.
摘要翻译：输入数字信号周期性地交替进行第一调制和第二调制，从而转换成一对基带I信号和基带Q信号。第一调制和第二调制彼此不同。输出一对基带I信号和基带Q信号。第一调制可以是至少8信号点调制，而第二调制可以是相移键控。

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