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51. 发明申请

US20110243269A1 TRANSMITTER AND RECEIVER 有权
标题翻译：发射机和接收机
公开(公告)号：US20110243269A1
公开(公告)日：2011-10-06
申请号：US12880765
申请日：2010-09-13
申请人： Tsuyoshi Kogawa , Koji Akita , Koji Ogura , Takafumi Sakamoto
发明人： Tsuyoshi Kogawa , Koji Akita , Koji Ogura , Takafumi Sakamoto
IPC分类号： H04L27/00
CPC分类号： H04L27/361 , H04L27/2601
摘要： The transmitter includes a first bit generator, a modulator, a second bit generator and a bit converter. The first bit generator generates bits to be transmitted based on the first wireless scheme. The modulator for the first wireless scheme performs at least amplitude modulation of a multiple level on the bits generated by the first bit generator. The second bit generator generates a bit to be transmitted based on the second wireless scheme. The bit converter converts the bit generated by the second bit generator and inputs converted bits to the modulator wherein the bit converter converts the bit generated by the second bit generator so that a signal showing High in the second wireless scheme is modulated to amplitude of a high level in the multiple level in the modulator.
摘要翻译：发射机包括第一比特发生器，调制器，第二比特发生器和比特转换器。第一位发生器基于第一无线方案产生要发送的位。用于第一无线方案的调制器至少对由第一位产生器产生的位执行多电平的幅度调制。第二位发生器基于第二无线方案生成要发送的位。比特转换器转换由第二比特发生器产生的比特，并将转换的比特输入到调制器，其中比特转换器转换由第二比特发生器产生的比特，使得在第二无线方案中显示高的信号被调制到高的幅度电平在调制器的多级。

52. 发明授权

US07808885B2 Method of transmitting OFDM signal and transmitter and receiver thereof 有权
标题翻译：发送OFDM信号的方法及其发射机和接收机
公开(公告)号：US07808885B2
公开(公告)日：2010-10-05
申请号：US11776576
申请日：2007-07-12
申请人： Koji Akita , Noritaka Deguchi
发明人： Koji Akita , Noritaka Deguchi
IPC分类号： H04J11/00
CPC分类号： H04L25/0232 , H04B7/022 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L25/03866 , H04L27/2613 , H04L2025/03414 , H04L2025/03426
摘要： An OFDM transmitter includes, a data signal generator which generates a data signal by modulating a bit string obtained by channel coding, a pilot signal generator which generates a pilot signal, an allocation unit which allocates the pilot signal and data signal to a pilot subcarrier and a data subcarrier, a multiplier which multiples the first pilot signal and the first data signal by complex numbers for subcarrier group formed of specific pilot subcarrier of the pilot subcarriers and specific data subcarrier of the data subcarriers, a modulator which performs OFDM modulation on the second pilot signal and the second data signal to generate an OFDM signal, and a transmitting unit which transmits the OFDM signal.
摘要翻译： OFDM发送器包括：数据信号发生器，其通过调制通过信道编码获得的比特串生成数据信号;产生导频信号的导频信号发生器;分配导频信号和数据信号到导频子载波的分配单元，数据副载波，乘法器，用于将第一导频信号和第一数据信号乘以由导频子载波的特定导频子载波和数据子载波的特定数据副载波形成的副载波组的复数;对第二导频信号执行OFDM调制的调制器导频信号和第二数据信号以产生OFDM信号，以及发送单元，发送OFDM信号。

53. 发明申请

US20100119003A1 COMMUNICATION PROCESSING SYSTEM, OFDM SIGNAL TRANSMITTING METHOD, OFDM TRANSMITTER, OFDM RECEIVER, AND CONTROL STATION 有权
标题翻译：通信处理系统，OFDM信号发送方法，OFDM发射机，OFDM接收机和控制站
公开(公告)号：US20100119003A1
公开(公告)日：2010-05-13
申请号：US12479985
申请日：2009-06-08
申请人： Shigeo TERABE , Koji Akita
发明人： Shigeo TERABE , Koji Akita
IPC分类号： H04B7/02 , H04L27/28
CPC分类号： H04B7/022 , H04L5/0021 , H04L5/0032 , H04L5/0035 , H04L5/0048 , H04L25/03866
摘要： In an OFDM transmitter included in a first service area, an orthogonal-code-pattern multiplication unit multiplies pilot channel signals belonging to any subcarrier group by an orthogonal code which is different from that for one or a plurality of OFDM transmitters adjacent to the OFDM transmitter included in the first service area, or a subcarrier assignment unit assigns pilot channel signals to pilot subcarriers which are common to a plurality of OFDM transmitters and based on a pilot arrangement notified in advance by a control station to all OFDM transmitters included in the first service area.
摘要翻译：在包括在第一服务区域中的OFDM发射机中，正交码模式乘法单元将属于任何子载波组的导频信道信号乘以与OFDM发射机相邻的一个或多个OFDM发射机的正交码不同的正交码或者子载波分配单元将导频信道信号分配给多个OFDM发射机公共的导频子载波，并且基于由控制站预先通知给包括在第一服务中的所有OFDM发射机的导频装置区。

54. 发明申请

US20100117649A1 MAGNETIC RESONANCE IMAGING APPARATUS 有权
标题翻译：磁共振成像装置
公开(公告)号：US20100117649A1
公开(公告)日：2010-05-13
申请号：US12614943
申请日：2009-11-09
申请人： Toshiyuki Nakanishi , Koji Akita , Hideo Kasami , Takahiro Sekiguchi
发明人： Toshiyuki Nakanishi , Koji Akita , Hideo Kasami , Takahiro Sekiguchi
IPC分类号： G01R33/44
CPC分类号： G01R33/3692 , G01R33/3607 , G01R33/3621
摘要： An apparatus including a probe unit and a control/imaging unit, the probe unit including a converter converting a sampled magnetic-resonance signal into a digital signal, a first transmitter converting the digital signal into a first-radio signal, a first receiver receiving a second-radio signal, and performing detection on the second-radio signal to obtain a first-received signal, and a clock-regeneration unit regenerating a clock component from the first-received signal to generate a regenerated-clock signal, the control/imaging unit including a second-receiver receiving the first-radio signal to obtain a second-received signal, a data processor performing data processing on the second-received signal in synchronism with a reference-clock signal to obtain a video signal, and a second transmitter including a modulator modulating a carrier wave using the reference-clock signal, the second transmitter converting the reference-clock signal into the second-radio signal and transmitting the second-radio signal through the second-wireless channel.
摘要翻译：一种包括探针单元和控制/成像单元的装置，所述探针单元包括将采样的磁共振信号转换为数字信号的转换器，将所述数字信号转换为第一无线电信号的第一发射机，第二无线电信号，并且对第二无线电信号执行检测以获得第一接收信号，以及时钟再生单元，从第一接收信号再生时钟分量以产生再生时钟信号，控制/成像单元，包括接收第一无线电信号的第二接收器以获得第二接收信号;数据处理器，与参考时钟信号同步地对第二接收信号执行数据处理，以获得视频信号;以及第二发射机包括使用参考时钟信号调制载波的调制器，第二发射机将参考时钟信号转换成第二无线电信号并发送第第二无线电信号通过第二无线信道。

55. 发明申请

US20080240273A1 RADIO TRANSMITTING APPARATUS AND RADIO RECEIVING APPARATUS USING OFDM 审中-公开
标题翻译：使用OFDM的无线电发射装置和无线电接收装置
公开(公告)号：US20080240273A1
公开(公告)日：2008-10-02
申请号：US12049826
申请日：2008-03-17
申请人： Koji AKITA
发明人： Koji AKITA
IPC分类号： H04L27/28
CPC分类号： H04L27/2647 , H03M13/09 , H03M13/6337 , H04L1/0071 , H04L1/04 , H04L27/2626
摘要： A radio transmitting apparatus includes an attacher to attach an error-detecting bit to a bit sequence, a coder to perform systematic coding on a bit sequence to which the error-detecting bit is attached to generate an information bit sequence and a parity bit sequence, a first modulator to modulate the information bit sequence to generate a first modulation symbol, a second modulator to modulate the parity bit sequence to generate a second modulation symbol, an allocator to allocate the first modulation symbols to first subcarriers by dispersing the first modulation symbols in the frequency/time direction, and allocate the second modulation symbols to second subcarriers different from the first subcarriers, an modulator to perform OFDM modulation on the first and second modulation symbols by using the first and the second subcarriers to generate an OFDM signal, and a transmitting unit to transmit the OFDM signal.
摘要翻译：一种无线电发送装置，包括附着在比特序列上的错误检测比特的附属装置，编码器，用于对附加有错误检测比特的比特序列执行系统编码，以生成信息比特序列和奇偶校验比特序列，调制所述信息比特序列以产生第一调制符号的第一调制器，调制所述奇偶校验位序列以产生第二调制符号的第二调制器，通过将第一调制符号分散在第一调制符号中以将第一调制符号分配给第一子载波的分配器频率/时间方向，并且将第二调制符号分配给与第一子载波不同的第二子载波;调制器，通过使用第一和第二子载波来对第一和第二调制符号执行OFDM调制以产生OFDM信号，以及发送单元来发送OFDM信号。

56. 发明申请

US20080037680A1 TRANSMISSION METHOD, TRANSMITTER, AND RECEIVER FOR MULTI ANTENNA WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：多天线无线通信系统的传输方法，发射机和接收机
公开(公告)号：US20080037680A1
公开(公告)日：2008-02-14
申请号：US11838255
申请日：2007-08-14
申请人： Ren SAKATA , Koji Akita
发明人： Ren SAKATA , Koji Akita
IPC分类号： H04B7/02
CPC分类号： H04B7/06 , H04B7/0413 , H04B7/0613 , H04B7/0671 , H04B7/0684 , H04L27/2602 , H04L27/2626
摘要： A transmitter includes first generator to generate pilot source signal by modulating pilot sequence, second generator to generate data source signal with time length longer than that of pilot source signal by modulating data sequence, first cyclic shifter to perform cyclic shift of first shift amount to pilot source signal to generate first pilot signal, second cyclic shifter to performs cyclic shift of second shift amount to data source signal to generate first data signal, third cyclic shifter to perform cyclic shift of third shift amount to pilot source signal to generate second pilot signal, fourth cyclic shifter to perform cyclic shift of fourth shift amount to data source signal to generate second data signal, first transmit antenna to transmit first pilot signal and first data signal, and second transmit antenna to transmit second pilot signal and second data signal.
摘要翻译：发射机包括通过调制导频序列产生导频源信号的第一发生器，第二发生器通过调制数据序列产生时间长度比导频源信号长的数据源信号，第一循环移位器执行第一移位量到导频的循环移位源信号以产生第一导频信号，第二循环移位器执行第二移位量到数据源信号的循环移位以产生第一数据信号，第三循环移位器执行第三移位量到导频源信号的循环移位以产生第二导频信号，第四循环移位器，执行第四移位量到数据源信号的循环移位，生成第二数据信号，第一发送天线发送第一导频信号和第一数据信号;第二发送天线，发送第二导频信号和第二数据信号。

57. 发明申请

US20070253321A1 METHOD OF TRANSMITTING OFDM SIGNAL AND TRANSMITTER AND RECEIVER THEREOF 有权
标题翻译：发射OFDM信号和发射机的方法及其接收机
公开(公告)号：US20070253321A1
公开(公告)日：2007-11-01
申请号：US11776576
申请日：2007-07-12
申请人： Koji AKITA , Noritaka Deguchi
发明人： Koji AKITA , Noritaka Deguchi
IPC分类号： H04J11/00 , H04B3/10
CPC分类号： H04L25/0232 , H04B7/022 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L25/03866 , H04L27/2613 , H04L2025/03414 , H04L2025/03426
摘要： An OFDM transmitter includes, a data signal generator which generates a data signal by modulating a bit string obtained by channel coding, a pilot signal generator which generates a pilot signal, an allocation unit which allocates the pilot signal and data signal to a pilot subcarrier and a data subcarrier, a multiplier which multiples the first pilot signal and the first data signal by complex numbers for subcarrier group formed of specific pilot subcarrier of the pilot subcarriers and specific data subcarrier of the data subcarriers, a modulator which performs OFDM modulation on the second pilot signal and the second data signal to generate an OFDM signal, and a transmitting unit which transmits the OFDM signal.
摘要翻译： OFDM发送器包括：数据信号发生器，其通过调制通过信道编码获得的比特串生成数据信号;产生导频信号的导频信号发生器;分配导频信号和数据信号到导频子载波的分配单元，数据副载波，乘法器，用于将第一导频信号和第一数据信号乘以由导频子载波的特定导频子载波和数据子载波的特定数据副载波形成的副载波组的复数;对第二导频信号执行OFDM调制的调制器导频信号和第二数据信号以产生OFDM信号，以及发送单元，发送OFDM信号。

58. 发明申请

US20070098096A1 WIRELESS TRANSMITTER, SIGNAL TO SUBCARRIER ALLOCATION METHOD FOR SYNCHRONIZING SYMBOL, AND WIRELESS RECEIVER 审中-公开
标题翻译：无线发射机，信号到同步符号分配方法和无线接收机
公开(公告)号：US20070098096A1
公开(公告)日：2007-05-03
申请号：US11548560
申请日：2006-10-11
申请人： Koji AKITA , Koichiro Ban
发明人： Koji AKITA , Koichiro Ban
IPC分类号： H04K1/10
CPC分类号： H04L27/2655 , H04L5/0007 , H04L5/0048 , H04L27/2602 , H04L27/2657 , H04L27/2662
摘要： A wireless transmitter for transmitting an OFDM symbol including a first generator to generate a plurality of first signals each including a stationary signal, a second generator to generate a plurality of second signals whose total power is less than that of the first signals, and an allocation unit configured to allocate the first signals to the ±N*k (N: an integral number not less than or equal to 2, k=1, 2, . . . ) th first subcarriers of a synchronizing symbol and to allocate the second signals to at least some second subcarriers of the synchronizing symbol, a generating unit configured to generates a signal of an OFDM symbol including the synchronizing symbol in which the first signals and the second signals are allocated into the first subcarriers and the second subcarriers, and a transmission unit configured to transmit the signal of the OFDM symbol.
摘要翻译：一种无线发射机，用于发送包括第一发生器的OFDM符号，以产生各自包括平稳信号的多个第一信号，第二发生器产生总功率小于第一信号的多个第二信号，以及分配被配置为将第一信号分配给同步符号的±N * k（N：不小于或等于2，k = 1,2，...）的第一子载波的积分数，并且分配第二信号到所述同步符号的至少一些第二副载波;生成单元，被配置为生成包括将所述第一信号和所述第二信号分配给所述第一子载波和所述第二子载波的同步符号的OFDM符号的信号，以及传输被配置为发送OFDM符号的信号的单元。

59. 发明申请

US20060203759A1 Method for modulating a bit string, modulator, radio transmitter, and radio receiver 失效
标题翻译：用于调制位串，调制器，无线电发射机和无线电接收机的方法
公开(公告)号：US20060203759A1
公开(公告)日：2006-09-14
申请号：US11360504
申请日：2006-02-24
申请人： Koji Akita , Tomoya Horiguchi , Koji Ogura
发明人： Koji Akita , Tomoya Horiguchi , Koji Ogura
IPC分类号： H04B7/216
CPC分类号： H04J13/00 , H04B2201/709709 , H04L1/0625
摘要： A modulator includes a first input configured to input a first bit string; a first modulating device configured to modulate the inputted first bit string at a first bit rate; a second input configured to input a second bit string; a second modulating device configured to modulate the inputted second bit string at a second bit rate which is lower than the first bit rate; and an output configured to output a modulated signal including the modulated first bit string and the modulated second bit string.
摘要翻译：调制器包括被配置为输入第一位串的第一输入; 第一调制装置，被配置为以第一比特率调制所输入的第一比特串; 配置为输入第二位串的第二输入; 第二调制装置，被配置为以低于所述第一比特率的第二比特率调制所输入的第二比特串; 以及输出，被配置为输出包括调制的第一位串和调制的第二位串的调制信号。

60. 发明申请

US20050163270A1 Radio receiving apparatus and method 有权
标题翻译：无线接收装置及方法
公开(公告)号：US20050163270A1
公开(公告)日：2005-07-28
申请号：US10950396
申请日：2004-09-28
申请人： Koji Akita , Kazumi Sato , Kuniaki Ito , Akihiro Tsujimura
发明人： Koji Akita , Kazumi Sato , Kuniaki Ito , Akihiro Tsujimura
IPC分类号： H04B1/16 , H04B1/18 , H04B7/08 , H04J99/00 , H04L1/02 , H04L27/08
CPC分类号： H04B7/0874
摘要： Radio receiving apparatus comprises antennas, radio units adjusting gains of received signals, and outputting the adjusted received signals, respectively, converters converting the adjusted received signals into digital signals, selector device which selects several of the digital signals, combination of the selected digital signals exhibiting good receiving characteristic, controller which determines the gains and outputs single control signal included in information of the determined gains to certain radio units, the certain radio units being included in the radio units and connected to certain converters of the converters which output digital signals included in the selected combination, weight calculator which calculates weight for each of the selected digital signals to enhance the receiving characteristic if the controller outputs the single control signal, synthesizer which synthesizes, into synthetic digital signal, digital signals obtained by multiplying each of the selected digital signals by the weight, and demodulator which demodulates the synthetic digital signal.
摘要翻译：无线电接收设备包括天线，无线电单元调整接收信号的增益，并分别输出经调整的接收信号，将经调整的接收信号转换成数字信号的转换器，选择几个数字信号的选择器装置，所选数字信号的组合呈现良好的接收特性，控制器，其确定增益和输出包括在确定的增益的信息中的单个控制信号到某些无线电单元，所述某些无线电单元包括在无线电单元中，并连接到转换器的某些转换器，该转换器输出包括在所选择的组合，权重计算器，其计算每个所选择的数字信号的权重，以在控制器输出单个控制信号时提高接收特性，合成器将合成数字信号合成为通过将所选择的d 数字信号由重量，解调器解调合成数字信号。

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