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1. 发明授权

US09008211B2 Receiving device, receiving method, and receiving program 有权
标题翻译：接收设备，接收方法和接收程序
公开(公告)号：US09008211B2
公开(公告)日：2015-04-14
申请号：US14237601
申请日：2012-08-06
申请人： Kazuhiko Fukawa , Hiroshi Suzuki , Satoshi Suyama , Ryota Yamada , Takashi Yoshimoto , Naoki Okamoto
发明人： Kazuhiko Fukawa , Hiroshi Suzuki , Satoshi Suyama , Ryota Yamada , Takashi Yoshimoto , Naoki Okamoto
IPC分类号： H04L1/00 , H04B7/08 , H04B7/04
CPC分类号： H04L1/0054 , H04B7/0413 , H04B7/0854
摘要： A receiving device, a receiving method, and a receiving program are provided and are capable of reducing performance degradation in a case where the spatial correlation of a channel becomes high. A transmission signal candidate search unit searches for a transmission signal in a direction in which reception performance is degraded, in MIMO signal detection. A transmission signal candidate generation unit generates transmission signal candidates while suppressing degradation due to the spatial correlation of a channel. In a decision unit, using the transmission signal candidates generated in the transmission signal candidate generation unit, a maximum likelihood sequence is obtained. The maximum likelihood sequence is obtained as transmission signal candidates where a metric is calculated and the metric becomes a minimum.
摘要翻译：提供接收装置，接收方法和接收程序，并且能够在信道的空间相关性变高的情况下降低性能下降。在MIMO信号检测中，发送信号候选搜索部在接收性能下降的方向上搜索发送信号。传输信号候补生成单元在抑制由于信道的空间相关性引起的劣化的同时，生成发送信号候补。在决定单元中，使用在发送信号候选生成单元中生成的发送信号候选，获得最大似然序列。获得最大似然序列作为传输信号候选，其中计算度量并且度量变得最小。

2. 发明授权

US08218671B2 Receiving apparatus, receiving method and communication system 有权
标题翻译：接收装置，接收方式和通信系统
公开(公告)号：US08218671B2
公开(公告)日：2012-07-10
申请号：US12866175
申请日：2009-02-04
申请人： Kazuhiko Fukawa , Hiroshi Suzuki , Satoshi Suyama , Ryota Yamada , Naoki Okamoto
发明人： Kazuhiko Fukawa , Hiroshi Suzuki , Satoshi Suyama , Ryota Yamada , Naoki Okamoto
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04L25/03171 , H04L2025/03426
摘要： To obtain excellent reception performance while cutting down the amount of computing operation in a MIMO communication system using soft-decision error correction coding. Received waves picked up by receiving antennas 401-1 to 401-R are converted from the radio frequency to the baseband signal by respective receivers 402-1 to 402-R to be output as a received signal. A signal detector 403 calculates bit LLRs of the transmitted signal based on the received signal and the channel-estimated values obtained from a channel estimator 404. The bit LLRs output from signal detector 403 are rearranged by deinterleaver units 405-1 to 405-T in the patterns opposite to the patterns in which interleaving was performed on the transmission side. The bit LLRs after de-interleaving are subjected to an error correction decoding process through decoders 406-1 to 406-T. The bit sequences after decoding are parallel-to-serial converted by a parallel-to-serial converter 407 so that the detected transmission bit sequence is output.
摘要翻译：为了获得良好的接收性能，同时在使用软判决纠错编码的MIMO通信系统中减少计算操作量。由接收天线401-1至401-R拾取的接收波由各接收器402-1至402-R从射频转换为基带信号，以作为接收信号输出。信号检测器403基于从信道估计器404获得的接收信号和信道估计值来计算发送信号的比特LLR。从信号检测器403输出的比特LLR由解交织器单元405-1至405-T重新排列与在发送侧执行交织的模式相反的模式。解交织后的比特LLR经由解码器406-1至406-T进行纠错解码处理。解码后的比特序列由并行到串行转换器407并行 - 串行转换，从而输出所检测的传输比特序列。

3. 发明申请

US20140192936A1 RECEIVING DEVICE, RECEIVING METHOD, AND RECEIVING PROGRAM 有权
标题翻译：接收设备，接收方法和接收程序
公开(公告)号：US20140192936A1
公开(公告)日：2014-07-10
申请号：US14237601
申请日：2012-08-06
申请人： Kazuhiko Fukawa , Hiroshi Suzuki , Satoshi Suyama , Ryota Yamada , Takashi Yoshimoto , Naoki Okamoto
发明人： Kazuhiko Fukawa , Hiroshi Suzuki , Satoshi Suyama , Ryota Yamada , Takashi Yoshimoto , Naoki Okamoto
IPC分类号： H04L1/00 , H04B7/04
CPC分类号： H04L1/0054 , H04B7/0413 , H04B7/0854
摘要： To provide a receiving device, a receiving method, and a receiving program, which are capable of reducing performance degradation in a case where the spatial correlation of a channel becomes high.A transmission signal candidate search unit searches for a transmission signal in a direction in which reception performance is degraded, in MIMO signal detection. A transmission signal candidate generation unit generates transmission signal candidates while suppressing degradation due to the spatial correlation of a channel. In a decision unit, using the transmission signal candidates generated in the transmission signal candidate generation unit, a maximum likelihood sequence is obtained. The maximum likelihood sequence is obtained as transmission signal candidates where a metric is calculated and the metric becomes a minimum.
摘要翻译：提供一种在信道的空间相关性变高的情况下能够降低性能下降的接收装置，接收方法和接收程序。在MIMO信号检测中，发送信号候选搜索部在接收性能下降的方向上搜索发送信号。传输信号候补生成单元在抑制由于信道的空间相关性引起的劣化的同时，生成发送信号候补。在决定单元中，使用在发送信号候选生成单元中生成的发送信号候选，获得最大似然序列。获得最大似然序列作为传输信号候选，其中计算度量并且度量变得最小。

4. 发明申请

US20120099679A1 RECEIVING APPARATUS AND RECEIVING METHOD 审中-公开
标题翻译：接收装置和接收方法
公开(公告)号：US20120099679A1
公开(公告)日：2012-04-26
申请号：US13322169
申请日：2010-05-25
申请人： Ryota Yamada , Katsuya Kato , Takashi Yoshimoto , Hiroshi Suzuki , Kazuhiko Fukawa , Satoshi Suyama
发明人： Ryota Yamada , Katsuya Kato , Takashi Yoshimoto , Hiroshi Suzuki , Kazuhiko Fukawa , Satoshi Suyama
IPC分类号： H04L27/06
CPC分类号： H04L25/0228 , H04B7/0413 , H04J11/0063 , H04L25/0204
摘要： A receiving apparatus and reception method reduces degradation due to multipath interference without increasing the amount of computation even in a system that has a large number of subcarriers. A signal detector, using the symbol replica generated by symbol replica generator and the channel estimate which a channel estimator estimated based on the received pilot signal, suppresses interference attributed to delayed waves exceeding the GI and outputs a suppressed signal for the received signal. A demodulator decodes the signal of which interference has been alleviated, to determine code bit LLR as bit likelihood information. A decoder performs an error correction decoding process on the input code bit LLR. If no error exists in the result of error correction decoding, the decoder outputs information bits to complete the reception process. If there is an error in the decoded result, the decoder outputs the code bit LLR to symbol replica generator.
摘要翻译：即使在具有大量子载波的系统中，接收装置和接收方法也减少了由于多路径干扰导致的劣化，而不增加计算量。信号检测器利用由符号复制产生器产生的符号副本和基于接收到的导频信号估计的信道估计器的信道估计，抑制归因于超过GI的延迟波的干扰，并输出接收信号的抑制信号。解调器解码干扰已被减轻的信号，以便将码位LLR确定为比特似然信息。解码器对输入码位LLR执行纠错解码处理。如果在纠错解码结果中没有错误，则解码器输出信息比特以完成接收处理。如果解码结果存在错误，则解码器将码位LLR输出到码元复制发生器。

5. 发明授权

US08761282B2 Receiver and receiving method 失效
标题翻译：接收和接收方法
公开(公告)号：US08761282B2
公开(公告)日：2014-06-24
申请号：US13499714
申请日：2010-10-20
申请人： Naoki Okamoto , Ryota Yamada
发明人： Naoki Okamoto , Ryota Yamada
IPC分类号： H04K1/10
CPC分类号： H04L27/2647 , H04B7/022 , H04B7/2606 , H04L27/2649 , H04L27/2655 , H04W56/005
摘要： Disclosed is a receiver in a communication system provided with one transmitting station or two or more transmitting stations and the receiver for reception from the transmitting stations. For a case where identical signals are sent from the one transmitting station or the two or more transmitting stations, the receiver includes a first demodulator which executes demodulation processing of the signals as a single signal group, a second demodulator which executes demodulation processing of the signals as multiple signal groups, a determination unit which discriminates between the single signal group and the multiple signal groups, and a control unit which controls which one of the first demodulator and the second demodulator is to execute the demodulation processing based on a determination result by the determination unit.
摘要翻译：公开了一种通信系统中的接收机，其具有一个发送站或两个或更多个发送站以及用于从发送站接收的接收机。对于从一个发送站或两个以上发送站发送相同的信号的情况，接收机包括执行作为单个信号组的信号的解调处理的第一解调器，执行信号的解调处理的第二解调器作为多个信号组，确定单元，其识别单个信号组和多个信号组;以及控制单元，其基于所述第一解调器和第二解调器的确定结果来控制第一解调器和第二解调器中的哪一个执行解调处理决定单位。

6. 发明授权

US08284851B2 Transmission apparatus, reception apparatus, communication system, transmission method and reception method 有权
标题翻译：发送装置，接收装置，通信系统，发送方法和接收方法
公开(公告)号：US08284851B2
公开(公告)日：2012-10-09
申请号：US12936065
申请日：2009-03-30
申请人： Takashi Yoshimoto , Ryota Yamada , Kazuyuki Shimezawa , Naoki Okamoto
发明人： Takashi Yoshimoto , Ryota Yamada , Kazuyuki Shimezawa , Naoki Okamoto
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L1/0069 , H04L1/1819 , H04L1/1893 , H04L5/0046 , H04L5/0053 , H04L5/0055 , H04L27/2605
摘要： Data errors are sufficiently corrected and desired transmission quality is obtained even when the time variation of fading is large in a multicarrier transmission scheme communication system to which HARQ is applied. A transmission apparatus 100 is applied to a communication system in which the transmission apparatus and a reception apparatus perform automatic repeat request control therebetween, and has a subcarrier spacing setting section 111 that sets the subcarrier spacing used in transmitting a retransmission signal to be larger than the subcarrier spacing used in transmitting a first transmission signal, an IFFT section 112 that performs IFFT (Inverse Fast Fourier Transform) on an input signal based on the subcarrier spacing set in the subcarrier spacing setting section 111, and a transmission section 102 that transmits the first transmission signal and at least one retransmission signal.
摘要翻译：即使在应用了HARQ的多载波传输方式通信系统中，即使在衰落的时间变化大的情况下，也能够充分地校正数据错误，并且获得期望的传输质量。发送装置100应用于其中发送装置和接收装置在其间进行自动重复请求控制的通信系统，并且具有将发送重发信号所使用的子载波间隔设置为大于所述发送装置的副载波间隔设定部111 在发送第一发送信号中使用的子载波间隔，基于在子载波间隔设定部111中设定的副载波间隔对输入信号进行IFFT（快速傅里叶逆变换）的IFFT部112，以及发送部发送信号和至少一个重发信号。

7. 发明申请

US20120201333A1 RECEIVER AND RECEIVING METHOD 失效
标题翻译：接收和接收方法
公开(公告)号：US20120201333A1
公开(公告)日：2012-08-09
申请号：US13499714
申请日：2010-10-20
申请人： Naoki Okamoto , Ryota Yamada
发明人： Naoki Okamoto , Ryota Yamada
IPC分类号： H04B1/16
CPC分类号： H04L27/2647 , H04B7/022 , H04B7/2606 , H04L27/2649 , H04L27/2655 , H04W56/005
摘要： Disclosed is a receiver in a communication system provided with one transmitting station or two or more transmitting stations and the receiver for reception from the transmitting stations. For a case where identical signals are sent from the one transmitting station or the two or more transmitting stations, the receiver includes a first demodulator which executes demodulation processing of the signals as a single signal group, a second demodulator which executes demodulation processing of the signals as multiple signal groups, a determination unit which discriminates between the single signal group and the multiple signal groups, and a control unit which controls which one of the first demodulator and the second demodulator is to execute the demodulation processing based on a determination result by the determination unit.
摘要翻译：公开了一种通信系统中的接收机，其具有一个发送站或两个或更多个发送站以及用于从发送站接收的接收机。对于从一个发送站或两个以上发送站发送相同的信号的情况，接收机包括执行作为单个信号组的信号的解调处理的第一解调器，执行信号的解调处理的第二解调器作为多个信号组，确定单元，其识别单个信号组和多个信号组;以及控制单元，其基于所述第一解调器和第二解调器的确定结果来控制第一解调器和第二解调器中的哪一个执行解调处理决定单位。

8. 发明申请

US20110038430A1 TRANSMISSION APPARATUS, RECEPTION APPARATUS, COMMUNICATION SYSTEM, TRANSMISSION METHOD AND RECEPTION METHOD 有权
标题翻译：传输装置，接收装置，通信系统，传输方法和接收方法
公开(公告)号：US20110038430A1
公开(公告)日：2011-02-17
申请号：US12936065
申请日：2009-03-30
申请人： Takashi Yoshimoto , Ryota Yamada , Kazuyuki Shimezawa , Naoki Okamoto
发明人： Takashi Yoshimoto , Ryota Yamada , Kazuyuki Shimezawa , Naoki Okamoto
IPC分类号： H04L27/00
CPC分类号： H04L1/0069 , H04L1/1819 , H04L1/1893 , H04L5/0046 , H04L5/0053 , H04L5/0055 , H04L27/2605
摘要： Data errors are sufficiently corrected and desired transmission quality is obtained even when the time variation of fading is large in a multicarrier transmission scheme communication system to which HARQ is applied. A transmission apparatus 100 is applied to a communication system in which the transmission apparatus and a reception apparatus perform automatic repeat request control therebetween, and has a subcarrier spacing setting section 111 that sets the subcarrier spacing used in transmitting a retransmission signal to be larger than the subcarrier spacing used in transmitting a first transmission signal, an IFFT section 112 that performs IFFT (Inverse Fast Fourier Transform) on an input signal based on the subcarrier spacing set in the subcarrier spacing setting section 111, and a transmission section 102 that transmits the first transmission signal and at least one retransmission signal.
摘要翻译：即使在应用了HARQ的多载波传输方式通信系统中，即使在衰落的时间变化大的情况下，也能够充分地校正数据错误，并且获得期望的传输质量。发送装置100应用于其中发送装置和接收装置在其间进行自动重复请求控制的通信系统，并且具有将发送重发信号所使用的子载波间隔设置为大于所述发送装置的副载波间隔设定部111 在发送第一发送信号中使用的子载波间隔，基于在子载波间隔设定部111中设定的副载波间隔对输入信号进行IFFT（快速傅里叶逆变换）的IFFT部112，以及发送部发送信号和至少一个重发信号。

9. 发明授权

US08483304B2 Radio transmitter, radio communication system, and radio transmission method 有权
标题翻译：无线电发射机，无线电通信系统和无线电传输方法
公开(公告)号：US08483304B2
公开(公告)日：2013-07-09
申请号：US12092048
申请日：2006-10-31
申请人： Kimihiko Imamura , Ryota Yamada
发明人： Kimihiko Imamura , Ryota Yamada
IPC分类号： H04B7/02
CPC分类号： H04W72/04 , H04B7/04 , H04B7/0413 , H04B7/0452 , H04B7/0602 , H04B7/0608 , H04B7/0671 , H04B7/0689 , H04B7/12 , H04L5/0023 , H04L5/0057 , H04L5/0094 , H04L27/2601 , H04L2025/03414 , H04L2025/03426
摘要： A radio transmitter of the present invention includes a scheduler for assigning a communication time or a communication frequency to each radio receiver based on quality information of a received signal transmitted by the radio receiver, a transmission circuit controller for transmitting either a frequency diversity region or a multiuser diversity region to be selected with respect to each chunk, and a transmission circuit for applying different delay times to signals of a plurality of transmission antennas based on a transmission result of the transmission circuit controller.
摘要翻译：本发明的无线发射机包括：调度器，用于根据由无线接收机发送的接收信号的质量信息，向每个无线接收机分配通信时间或通信频率;发送电路控制器，用于发送频率分集区域或多个用户分集区域，以及根据发送电路控制器的发送结果，对多个发送天线的信号应用不同的延迟时间的发送电路。

10. 发明申请

US20120252381A1 TRANSMITTER FOR COMMUNICATIONS SYSTEM 有权
标题翻译：发信机通信系统
公开(公告)号：US20120252381A1
公开(公告)日：2012-10-04
申请号：US13517585
申请日：2012-06-13
申请人： Toshizo Nogami , Kimihiko Imamura , Ryota Yamada
发明人： Toshizo Nogami , Kimihiko Imamura , Ryota Yamada
IPC分类号： H04B7/02
CPC分类号： H04B7/0671 , H04B7/0452 , H04B7/0682 , H04B7/12
摘要： An rf signal transmitter for transmitting rf signals through a plurality of antennas is described, which comprises: a transmit section adapted to selectively set, with respect to an input signal, the initial phase of an output to at least one of said antennas depending on a time or frequency region used for communication and to provide delay to the output on an antenna-by-antenna basis and on the basis of a transmission timing or a transmission frequency; and a quality information receive section for receiving quality information from destination station, i.e., a wireless terminal unit, said quality information concerning the rf signal transmitted from said transmit section and received at said destination station.
摘要翻译：描述了一种用于通过多个天线发送rf信号的射频信号发射机，其包括：发射部分，其适于相对于输入信号有选择地将输出的初始相位设置为至少一个所述天线，这取决于用于通信的时间或频率区域，并且在天线基础上并基于发送定时或发送频率向输出提供延迟; 以及质量信息接收部分，用于从目的地站即无线终端单元接收关于从所述发送部分发送并在所述目的地站处接收的rf信号的质量信息的质量信息。

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