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1. 发明授权

US07848711B2 Radio communication apparatus and radio communication method 有权
标题翻译：无线电通信装置和无线电通信方法
公开(公告)号：US07848711B2
公开(公告)日：2010-12-07
申请号：US11694124
申请日：2007-03-30
申请人： Takahiro Asai , Hui Shi , Hiromasa Fujii , Takefumi Yamada , Hitoshi Yoshino , Hiroshi Suzuki , Kazuhiko Fukawa , Satoshi Suyama
发明人： Takahiro Asai , Hui Shi , Hiromasa Fujii , Takefumi Yamada , Hitoshi Yoshino , Hiroshi Suzuki , Kazuhiko Fukawa , Satoshi Suyama
IPC分类号： H04B1/50 , H04B1/10
CPC分类号： H04B1/525
摘要： A radio communication apparatus for performing transmission and reception based on radio communication includes: a power suppressor for coupling loop interference signal for attenuating signal power of a received signal to suppress the coupling loop interference signal power of the received signal; and a transceiver having a coupling loop interference signal removal function for analog domain and/or a coupling loop interference signal removal function for digital domain, for removing a coupling loop interference signal contained in a signal output from the power suppressor for coupling loop interference signal.
摘要翻译：一种用于基于无线电通信进行发送和接收的无线电通信装置包括：功率抑制器，用于耦合环路干扰信号，用于衰减接收信号的信号功率，以抑制接收信号的耦合环路干扰信号功率; 以及具有用于模拟域的耦合环路干扰信号去除功能和/或用于数字域的耦合环路干扰信号去除功能的收发器，用于去除包含在从功率抑制器输出的用于耦合环路干扰信号的信号中的耦合环路干扰信号。

2. 发明申请

US20070230547A1 RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION METHOD 有权
标题翻译：无线电通信设备和无线电通信方法
公开(公告)号：US20070230547A1
公开(公告)日：2007-10-04
申请号：US11694124
申请日：2007-03-30
申请人： Takahiro ASAI , Hui Shi , Hiromasa Fujii , Takefumi Yamada , Hitoshi Yoshino , Hiroshi Suzuki , Kazuhiko Fukawa , Satoshi Suyama
发明人： Takahiro ASAI , Hui Shi , Hiromasa Fujii , Takefumi Yamada , Hitoshi Yoshino , Hiroshi Suzuki , Kazuhiko Fukawa , Satoshi Suyama
IPC分类号： H04L5/16
CPC分类号： H04B1/525
摘要： A radio communication apparatus for performing transmission and reception based on radio communication includes: a power suppressor for coupling loop interference signal for attenuating signal power of a received signal to suppress the coupling loop interference signal power of the received signal; and a transceiver having a coupling loop interference signal removal function for analog domain and/or a coupling loop interference signal removal function for digital domain, for removing a coupling loop interference signal contained in a signal output from the power suppressor for coupling loop interference signal.
摘要翻译：一种用于基于无线电通信进行发送和接收的无线电通信装置包括：功率抑制器，用于耦合环路干扰信号，用于衰减接收信号的信号功率，以抑制接收信号的耦合环路干扰信号功率; 以及具有用于模拟域的耦合环路干扰信号去除功能和/或用于数字域的耦合环路干扰信号去除功能的收发器，用于去除包含在从功率抑制器输出的用于耦合环路干扰信号的信号中的耦合环路干扰信号。

3. 发明授权

US07778611B2 Radio communication apparatus and radio communication method 有权
标题翻译：无线电通信装置和无线电通信方法
公开(公告)号：US07778611B2
公开(公告)日：2010-08-17
申请号：US11752714
申请日：2007-05-23
申请人： Takahiro Asai , Hui Shi , Hitoshi Yoshino , Satoshi Suyama , Kazuhiko Fukawa , Hiroshi Suzuki
发明人： Takahiro Asai , Hui Shi , Hitoshi Yoshino , Satoshi Suyama , Kazuhiko Fukawa , Hiroshi Suzuki
IPC分类号： H04B1/50 , H04B1/10
CPC分类号： H04B1/525 , H04B7/155
摘要： A radio communication apparatus for performing transmission and reception of radio communications simultaneously by using different carrier frequencies for transmission and reception, comprising: a transceiver having a coupling loop interference signal removal function for analog domain and/or a coupling loop interference signal removal function for digital domain, for removing a coupling loop interference signal contained in a signal; and a power suppressor for coupling loop interference signal for attenuating the signal power in order to suppress the coupling loop interference signal power that is contained in the signal.
摘要翻译：一种无线电通信装置，用于通过使用不同的载波频率同时进行无线电通信的发送和接收，用于发送和接收，包括：收发器，具有用于模拟域的耦合环路干扰信号去除功能和/或用于数字的耦合环路干扰信号去除功能域，用于去除包含在信号中的耦合环路干扰信号; 以及用于耦合环路干扰信号的功率抑制器，用于衰减信号功率，以便抑制信号中包含的耦合环路干扰信号功率。

4. 发明申请

US20070274372A1 RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION METHOD 有权
标题翻译：无线电通信设备和无线电通信方法
公开(公告)号：US20070274372A1
公开(公告)日：2007-11-29
申请号：US11752714
申请日：2007-05-23
申请人： Takahiro Asai , Hui Shi , Hitoshi Yoshino , Satoshi Suyama , Kazuhiko Fukawa , Hiroshi Suzuki
发明人： Takahiro Asai , Hui Shi , Hitoshi Yoshino , Satoshi Suyama , Kazuhiko Fukawa , Hiroshi Suzuki
IPC分类号： H04L12/28
CPC分类号： H04B1/525 , H04B7/155
摘要： A radio communication apparatus for performing transmission and reception of radio communications simultaneously by using different carrier frequencies for transmission and reception, comprising: a transceiver having a coupling loop interference signal removal function for analog domain and/or a coupling loop interference signal removal function for digital domain, for removing a coupling loop interference signal contained in a signal; and a power suppressor for coupling loop interference signal for attenuating the signal power in order to suppress the coupling loop interference signal power that is contained in the signal.
摘要翻译：一种无线电通信装置，用于通过使用不同的载波频率同时进行无线电通信的发送和接收，用于发送和接收，包括：收发器，具有用于模拟域的耦合环路干扰信号去除功能和/或用于数字的耦合环路干扰信号去除功能域，用于去除包含在信号中的耦合环路干扰信号; 以及用于耦合环路干扰信号的功率抑制器，用于衰减信号功率，以便抑制信号中包含的耦合环路干扰信号功率。

5. 发明申请

US20080008126A1 WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD 审中-公开
标题翻译：无线通信设备和无线通信方法
公开(公告)号：US20080008126A1
公开(公告)日：2008-01-10
申请号：US11774394
申请日：2007-07-06
申请人： Masashige SHIRAKABE , Takahiro Asai , Naoto Matoba , Hitoshi Yoshino , Satoshi Suyama , Kazuhiko Fukawa , Hiroshi Suzuki
发明人： Masashige SHIRAKABE , Takahiro Asai , Naoto Matoba , Hitoshi Yoshino , Satoshi Suyama , Kazuhiko Fukawa , Hiroshi Suzuki
IPC分类号： H04Q7/00
CPC分类号： H04B7/2615 , H04W72/1263 , H04W84/047 , H04W92/10
摘要： An object is to provide a wireless communication device and a wireless communication method enabling improvement of communication efficiency. A communication control portion of a mobile station determines, in a procedure prior to data communication with a base station, a time interval for performing data transmission/reception with the base station. In the time interval determined by the communication control portion, a digital baseband circuit 107 executes control so as to perform data transmission as well as data reception.
摘要翻译：目的在于提供能够提高通信效率的无线通信装置和无线通信方法。移动台的通信控制部分在与基站进行数据通信之前的过程中，确定用于与基站进行数据发送/接收的时间间隔。在由通信控制部确定的时间间隔中，数字基带电路107执行控制，以便执行数据传输以及数据接收。

6. 发明申请

US20060193393A1 OFDM transmitter 有权
标题翻译： OFDM发射机
公开(公告)号：US20060193393A1
公开(公告)日：2006-08-31
申请号：US11353148
申请日：2006-02-14
申请人： Jiyun Shen , Hiromasa Fujii , Takahiro Asai , Hitoshi Yoshino
发明人： Jiyun Shen , Hiromasa Fujii , Takahiro Asai , Hitoshi Yoshino
IPC分类号： H04K1/10
CPC分类号： H04L27/2621
摘要： An OFDM transmitter is configured to perform a peak reduction process on a signal sequence to be transmitted in a stepwise manner to transmit a peak processed transmission signal. The OFDM transmitter includes a dividing inverse fast Fourier transform unit (104) configured to divide the signal sequence to be transmitted into N signal sequences (N>2) and perform inverse fast Fourier transform on each of the divided signal sequences to output N time signal sequences; a threshold control unit (106) configured to determine at least two threshold values (Cth) used in the stepwise peak reduction process; and a first peak reduction processing unit (1201) configured to determine a first cyclic shift to be applied to one of the time signal sequences based on a first one of the threshold values, produce a first cyclically shifted signal sequence according to the first cyclic shift, and output a first peak processed signal sequence based on the first cyclically shifted signal sequence. The first cyclic shift is determined such that an exceeding power level over the first threshold value in the first peak processed signal sequence becomes the minimum.
摘要翻译： OFDM发送器被配置为对要以逐步方式发送的信号序列执行峰值降低处理，以发送峰值处理的发送信号。所述OFDM发射机包括：分频逆快速傅里叶变换单元，被配置为将要发送的信号序列划分为N个信号序列（N> 2），并对每个分割信号序列进行快速傅立叶逆变换，以输出N个时间信号序列; 阈值控制单元（106），被配置为确定在所述逐步峰值降低处理中使用的至少两个阈值（C SUB）; 以及第一峰值缩减处理单元（120“1”），其被配置为基于所述阈值中的第一个来确定要施加到所述时间信号序列之一的第一循环移位，产生第一循环移位信号序列，并且基于第一循环移位信号序列输出第一峰值处理信号序列。确定第一循环移位，使得在第一峰值处理信号序列中超过第一阈值的超过功率电平变为最小。

7. 发明申请

US20050259565A1 Radio communication system, radio transmitter and radio receiver 有权
标题翻译：无线电通信系统，无线电发射机和无线电接收机
公开(公告)号：US20050259565A1
公开(公告)日：2005-11-24
申请号：US11121077
申请日：2005-05-04
申请人： Hiromasa Fujii , Jiyun Shen , Takahiro Asai , Hitoshi Yoshino
发明人： Hiromasa Fujii , Jiyun Shen , Takahiro Asai , Hitoshi Yoshino
IPC分类号： H04J11/00 , H04B1/04 , H04L27/26
CPC分类号： H04L27/2614
摘要： A radio transmitter adopting the OFDM scheme is disclosed. The radio transmitter includes an amplitude measuring part for measuring the amplitude of a transmission signal on which inverse Fourier transform has been performed; a power control part for outputting, based on the result of the measurement, control signals each for adjusting the amplitude of a signal on which inverse Fourier transform has not been performed, each signal corresponding to one of plural sub-carriers; and multiple multiplying parts each for multiplying the amplitude of the signal by a multiplying number indicated by the control signal. The power control part outputs the control signal based on a product of a signal pf(n) obtained by performing Fourier transform on an output of the amplitude measuring part and the signal sf(n).
摘要翻译：公开了采用OFDM方案的无线电发射机。无线电发射机包括用于测量其上进行了傅立叶逆变换的传输信号的幅度的幅度测量部分; 功率控制部分，用于基于测量结果输出用于调整未进行傅立叶逆变换的信号的振幅的控制信号，每个信号对应于多个子载波中的一个; 以及多个乘法器，用于将信号的振幅乘以由控制信号指示的乘数。功率控制部分基于通过对振幅测量部分的输出执行傅里叶变换而得到的信号p（n）（n）的乘积和信号s （n）。

8. 发明授权

US07649950B2 OFDM transmitter that performs a peak reduction process on a transmission signal sequence 有权
标题翻译： OFDM传输器，对传输信号序列执行峰值降低处理
公开(公告)号：US07649950B2
公开(公告)日：2010-01-19
申请号：US11353148
申请日：2006-02-14
申请人： Jiyun Shen , Hiromasa Fujii , Takahiro Asai , Hitoshi Yoshino
发明人： Jiyun Shen , Hiromasa Fujii , Takahiro Asai , Hitoshi Yoshino
IPC分类号： H04L27/28
CPC分类号： H04L27/2621
摘要： An OFDM transmitter that performs a peak reduction process in a stepwise manner on a signal sequence to be transmitted. The transmitter includes a dividing IFFT unit that divides a signal sequence into a plurality of signal sequences and IFFTs each of the signal sequences to obtain time signal sequences. Then, a first peak reduction processing unit cyclically shifts a first one of the time signal sequences by a first amount of cyclic shift obtained based on a first threshold to obtain a first cyclically shifted time signal sequence, and adds the first cyclically shifted time signal sequence and a second one of the time signal sequences. Meanwhile, a second peak reduction processing unit cyclically shifts a third one of the time signal sequences by a second amount of cyclic shift obtained based on a second threshold to obtain a second cyclically shifted time signal sequence.
摘要翻译： OFDM发送器，对要发送的信号序列进行逐步的峰值缩减处理。发射机包括分频IFFT单元，其将信号序列划分成多个信号序列，并将IFFT分别为每个信号序列以获得时间信号序列。然后，第一峰值降低处理单元将第一个时间信号序列循环移位基于第一阈值获得的第一循环移位量，以获得第一循环移位时间信号序列，并将第一循环移位时间信号序列和第二个时间信号序列。同时，第二峰值降低处理单元将第三个时间信号序列循环移位基于第二阈值获得的第二循环移位量，以获得第二循环移位时间信号序列。

9. 发明授权

US07532567B2 Radio communication system, radio transmitter and radio receiver 有权
标题翻译：无线电通信系统，无线电发射机和无线电接收机
公开(公告)号：US07532567B2
公开(公告)日：2009-05-12
申请号：US11121077
申请日：2005-05-04
申请人： Hiromasa Fujii , Jiyun Shen , Takahiro Asai , Hitoshi Yoshino
发明人： Hiromasa Fujii , Jiyun Shen , Takahiro Asai , Hitoshi Yoshino
IPC分类号： H04J11/00
CPC分类号： H04L27/2614
摘要： A radio transmitter adopting the OFDM scheme is disclosed. The radio transmitter includes an amplitude measuring part for measuring the amplitude of a transmission signal on which inverse Fourier transform has been performed; a power control part for outputting, based on the result of the measurement, control signals each for adjusting the amplitude of a signal on which inverse Fourier transform has not been performed, each signal corresponding to one of plural sub-carriers; and multiple multiplying parts each for multiplying the amplitude of the signal by a multiplying number indicated by the control signal. The power control part outputs the control signal based on a product of a signal pf(n) obtained by performing Fourier transform on an output of the amplitude measuring part and the signal sf(n).
摘要翻译：公开了采用OFDM方案的无线电发射机。无线发射机包括：振幅测量部分，用于测量已执行反傅里叶变换的发射信号的振幅; 功率控制部分，用于基于测量结果输出用于调整未进行傅立叶逆变换的信号的振幅的控制信号，每个信号对应于多个子载波中的一个; 以及多个乘法器，用于将信号的振幅乘以由控制信号指示的乘数。功率控制部分基于对幅度测量部分的输出和信号sf（n）执行傅里叶变换获得的信号pf（n）的乘积，输出控制信号。

10. 发明申请

US20050254556A1 Wireless communication system, wireless communication device, wireless reception device, wireless communication method, and channel estimation method 有权
标题翻译：无线通信系统，无线通信装置，无线接收装置，无线通信方式以及信道估计方法
公开(公告)号：US20050254556A1
公开(公告)日：2005-11-17
申请号：US11128190
申请日：2005-05-13
申请人： Hiromasa Fujii , Jiyun Shen , Takahiro Asai , Hitoshi Yoshino
发明人： Hiromasa Fujii , Jiyun Shen , Takahiro Asai , Hitoshi Yoshino
IPC分类号： H04J99/00 , H04B7/04 , H04J11/00 , H04L1/06 , H04L25/02 , H04L27/26 , H04B1/707
CPC分类号： H04L1/0618 , H04B17/24 , H04L27/2602
摘要： A wireless communication system is disclosed that transmits a feedback signal containing a channel estimate value between a first wireless communication device and a second wireless communication device. The first wireless communication device that transmits the feedback signals includes: a channel estimation unit that receives signals containing pilot signals, and determines the channel estimate value of a wireless link; a multiplier that multiplies a pilot signal by the channel estimate value; and a multiplexer that multiplexes an output signal from the multiplier with another pilot signal, to generate the feedback signal. The second wireless communication device that receives the feedback signal includes: a separator that separates the signals that are multiplexed in the feedback signal; and channel estimation units that determine the channel estimate value of the wireless link, based on the separated signals.
摘要翻译：公开了一种在第一无线通信设备和第二无线通信设备之间传送包含信道估计值的反馈信号的无线通信系统。发送反馈信号的第一无线通信装置包括：信道估计单元，其接收包含导频信号的信号，并确定无线链路的信道估计值; 乘法器，用于将导频信号乘以信道估计值; 以及多路复用器，其将来自乘法器的输出信号与另一导频信号进行复用，以产生反馈信号。接收反馈信号的第二无线通信装置包括：将反馈信号中多路复用的信号分离的分离器; 以及基于分离的信号来确定无线链路的信道估计值的信道估计单元。

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