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61. 发明授权

US5373247A Automatic frequency control method and circuit for correcting an error between a received carrier frequency and a local frequency 失效
标题翻译：用于校正接收到的载波频率和本地频率之间的误差的自动频率控制方法和电路
公开(公告)号：US5373247A
公开(公告)日：1994-12-13
申请号：US10364
申请日：1993-01-28
申请人： Hideto Furukawa , Koji Matsuyama , Tomonori Sato
发明人： Hideto Furukawa , Koji Matsuyama , Tomonori Sato
IPC分类号： H04L27/22 , H03J7/02 , H04L27/00 , H04L27/233 , H03C3/00 , H03D3/00 , H03D3/20 , H04L27/14
CPC分类号： H03J7/02 , H04L27/2332 , H04L2027/0028 , H04L2027/0055 , H04L2027/0065 , H04L2027/0069
摘要： An AFC method is used in a demodulator, which employs a 2.sup.n -phase phase shift keying modulation system, where n is an integer greater than or equal to two, to correct an error between a received carrier frequency and a local frequency. The AFC method includes the steps of (a) subjecting an intermediate frequency signal of a signal received by the demodulator to a quadrature wave detection to obtain I-axis and Q-axis signals, (b) converting amplitude information of the I-axis and Q-axis signals into phase information which includes frequency information, and (c) correcting the local frequency based on the frequency information included in the phase information.
摘要翻译：在解调器中使用AFC方法，其采用2n阶相移键控调制系统，其中n是大于或等于2的整数，以校正接收的载波频率和本地频率之间的误差。 AFC方法包括以下步骤：（a）对由解调器接收到的信号的中频信号进行正交检波以获得I轴和Q轴信号，（b）转换I轴的幅度信息和将Q轴信号变换为包括频率信息的相位信息，以及（c）基于包括在相位信息中的频率信息来校正本地频率。

62. 发明授权

US08447253B2 Radio communication system 失效
标题翻译：无线通信系统
公开(公告)号：US08447253B2
公开(公告)日：2013-05-21
申请号：US11819410
申请日：2007-06-27
申请人： Hideto Furukawa
发明人： Hideto Furukawa
IPC分类号： H03J7/18
CPC分类号： H04B1/005 , H04B7/2621 , H04L27/2602
摘要： In a radio communication system in which multiple bands or a plurality of different radio frequencies are used, a different radio transmission method is used in each band or at each radio frequency. For example, by transmitting data using radio formats which are different in each band or at each radio frequency, the radio transmission method is made different in each band or at each radio frequency. In order to vary the radio format, (1) the pilot length is varied at each radio frequency; or (2) the pilot interval is varied at each radio frequency; or (3) the guard interval length is varied in each band or at each radio frequency; or (4) when multicarrier modulation is used for radio communication in each band, the subcarrier interval for multicarrier transmission is varied in each band.
摘要翻译：在使用多个频带或多个不同射频的无线电通信系统中，在每个频带或每个射频使用不同的无线电传输方法。例如，通过使用在每个频带或每个射频不同的无线电格式发送数据，使得无线电传输方法在每个频带或每个射频处不同。为了改变无线电格式，（1）导频长度在每个射频频率下变化; 或（2）导频间隔在每个射频处变化; 或（3）每个频带或每个射频改变保护间隔长度; 或（4）当多载波调制用于每个频带中的无线电通信时，多载波传输的子载波间隔在每个频带中变化。

63. 发明授权

US08095171B2 Radio channel control method and receiving apparatus 有权
公开(公告)号：US08095171B2
公开(公告)日：2012-01-10
申请号：US13011527
申请日：2011-01-21
申请人： Hideto Furukawa , Takashi Dateki
发明人： Hideto Furukawa , Takashi Dateki
IPC分类号： H04Q7/20
CPC分类号： H04W28/0236 , H04W52/24
摘要： A radio channel control method for controlling, in a radio communication system having a transmitter and a receiver, a radio channel from the transmitter toward the receiver. The method includes receiving a signal transmitted from the transmitter by the receiver, measuring reception quality of the signal, generating information which indicates increment or decrement of the reception quality, and controlling a modulation or coding for the radio channel based on the information.

64. 发明授权

US08073480B2 Radio channel control method and receiving apparatus 有权
标题翻译：无线信道控制方法和接收装置
公开(公告)号：US08073480B2
公开(公告)日：2011-12-06
申请号：US11730670
申请日：2007-04-03
申请人： Hideto Furukawa , Takashi Dateki
发明人： Hideto Furukawa , Takashi Dateki
IPC分类号： H04Q7/20
CPC分类号： H04W28/0236 , H04W52/24
摘要： A base station used in a radio communication system includes a transmitting unit operable to transmit a signal to a receiver and a controller operable to control a modulation or coding of a radio channel according to a decision made by using information which indicates increment or decrement of reception quality of the signal.
摘要翻译：在无线电通信系统中使用的基站包括：发送单元，用于向接收机发送信号;以及控制器，用于根据通过使用指示递增或减少接收的信息进行的决定来控制无线电信道的调制或编码信号质量。

65. 发明授权

US07782923B2 Wireless communication system and device for controlling the peak to average power ratio 有权
标题翻译：用于控制峰值与平均功率比的无线通信系统和设备
公开(公告)号：US07782923B2
公开(公告)日：2010-08-24
申请号：US11332712
申请日：2006-01-13
申请人： Daisuke Ogawa , Takashi Dateki , Hideto Furukawa , Nobukazu Fudaba
发明人： Daisuke Ogawa , Takashi Dateki , Hideto Furukawa , Nobukazu Fudaba
IPC分类号： H04B1/69
CPC分类号： H04L27/262 , H04B1/707 , H04B2201/70706 , H04B2201/709709 , H04L27/2621
摘要： A wireless communication system, to control a peak power to an average power ratio because an amplifier characteristic of the wireless communication system include non-linear characteristic if input signal large the amplifier makes distortions. A wireless communication system comprises for suppressing a peak power to an average power ratio to process known signal like a pilot signal.
摘要翻译：无线通信系统，用于将峰值功率控制为平均功率比，因为无线通信系统的放大器特性如果输入信号较大，放大器产生失真，则包括非线性特性。无线通信系统包括用于抑制平均功率比的峰值功率以处理诸如导频信号的已知信号。

66. 发明申请

US20080268782A1 Receiving device and communication system 有权
标题翻译：接收设备和通信系统
公开(公告)号：US20080268782A1
公开(公告)日：2008-10-30
申请号：US12216056
申请日：2008-06-27
申请人： Takashi Dateki , Tetsuya Yano , Kazuhisa Obuchi , Daisuke Ogawa , Hideto Furukawa
发明人： Takashi Dateki , Tetsuya Yano , Kazuhisa Obuchi , Daisuke Ogawa , Hideto Furukawa
IPC分类号： H04B17/00
CPC分类号： H04L1/20 , H04L1/0029 , H04L5/0007 , H04L5/0037 , H04L5/0046 , H04L5/0048 , H04L5/006 , H04L5/0091
摘要： A receiving device and a communication system wherein the frequency usage efficiency is raised to improve the communication throughput. The receiving device comprises a receiving unit that receives multicarrier signals in which a plurality of subcarriers are divided into a plurality of subcarrier blocks (frequency blocks) each including at least one subcarrier and in which signals to be transmitted to receiving devices are allocated on a subcarrier block basis; an estimating unit that estimates, for each of the subcarrier blocks, quality values indicative of the reception statuses of the signals allocated to the plurality of subcarrier blocks; and a notifying unit that notifies a transmitting device of information indicative of a high quality subcarrier block having a high quality value in the quality values, a quality value in the high quality subcarrier block, and an interval of the subcarrier blocks having the quality value of which a difference from the quality value in the high-quality subcarrier block falls within a predetermined threshold value.
摘要翻译：一种接收设备和通信系统，其中提高了频率使用效率以提高通信吞吐量。接收装置包括：接收单元，其接收多载波信号，其中多个子载波被划分成多个子载波块（频率块），每个子载波块包括至少一个副载波，并且其中要发送到接收装置的信号被分配在子载波上块基估计单元，对于每个子载波块，估计表示分配给所述多个子载波块的信号的接收状态的质量值; 以及通知单元，其向所述发送设备通知指示质量值中具有高质量值的高质量子载波块的信息，高质量子载波块中的质量值，以及具有质量值的子载波块的间隔其与高质量子载波块中的质量值的差异落在预定阈值内。

67. 发明申请

US20070173206A1 Radio channel control method and receiving apparatus 有权
标题翻译：无线信道控制方法和接收装置
公开(公告)号：US20070173206A1
公开(公告)日：2007-07-26
申请号：US11730671
申请日：2007-04-03
申请人： Hideto Furukawa , Takashi Dateki
发明人： Hideto Furukawa , Takashi Dateki
IPC分类号： H04B7/00 , H04B1/00
CPC分类号： H04W28/0236 , H04W52/24
摘要： A radio channel control method for controlling, in a radio communication system having a transmitter and a receiver, a radio channel from the transmitter toward the receiver. The method includes receiving a signal transmitted from the transmitter by the receiver, measuring reception quality of the signal, generating information which indicates increment or decrement of the reception quality, and controlling a modulation or coding for the radio channel based on the information.
摘要翻译：一种用于在具有发射机和接收机的无线电通信系统中控制从发射机到接收机的无线电信道的无线电信道控制方法。该方法包括接收由接收机从发射机发送的信号，测量信号的接收质量，产生指示接收质量增加或减少的信息，以及基于该信息来控制无线电信道的调制或编码。

68. 发明申请

US20050130692A1 Radio channel control method and receiving apparatus 有权
标题翻译：无线信道控制方法和接收装置
公开(公告)号：US20050130692A1
公开(公告)日：2005-06-16
申请号：US11043307
申请日：2005-01-26
申请人： Hideto Furukawa , Takashi Dateki
发明人： Hideto Furukawa , Takashi Dateki
IPC分类号： H04B7/00 , H04B7/005
CPC分类号： H04W28/0236 , H04W52/24
摘要： According to the present invention, in response to a propagation environment of a radio channel, based on transmission power control information for controlling transmission power of the radio channel, a receiving apparatus generates information concerning a transmission parameter; notifies the information concerning a transmission parameter to a transmitting apparatus; the transmitting apparatus control the radio channel based on the information concerning a transmission parameter from the receiving apparatus, and thereby, the transmitting apparatus can rapidly change the transmission parameter in response to a fluctuation of the propagation environment of the radio channel.
摘要翻译：根据本发明，响应于无线电信道的传播环境，基于用于控制无线电信道的发送功率的发送功率控制信息，接收装置生成关于发送参数的信息; 将关于发送参数的信息通知给发送装置; 发送装置根据来自接收装置的发送参数的信息来控制无线信道，由此，发送装置能够根据无线信道的传播环境的波动来迅速地变更发送参数。

69. 发明授权

US06414985B1 Method for determining reference phase in radio communication system which uses orthogonal M-ary modulation, and coherent detection method using the same 失效
标题翻译：用于使用正交M进制调制的无线电通信系统中的参考相位的确定方法以及使用其的相干检测方法
公开(公告)号：US06414985B1
公开(公告)日：2002-07-02
申请号：US09152022
申请日：1998-09-11
申请人： Hideto Furukawa , Makoto Yoshida , Nami Hatazoe
发明人： Hideto Furukawa , Makoto Yoshida , Nami Hatazoe
IPC分类号： H04B7216
CPC分类号： H04B1/707 , H04B2001/70935 , H04L27/20 , H04L27/3818 , H04L27/3845
摘要： Reference phase is a radio communication system using orthogonal M-ary modulation is determined, so that a coherent detection system for a CDMA radio communication system is readily achieved. The determination of reference phase is performed by the step of determining a reference phase in a radio communication system, which uses orthogonal M-ary codes comprising the steps of determining the correlation values of an in-phase component and quadrature component corresponding to respective Hadamard matrices resulting from fast Hadamard transform or inverse Hadamard transform of a signal, which possesses said in-phase component and quadrature component, and which is sent from the sending end by phase shift keying an orthogonal M-ary code computing the sum of the squares of the respective correlation values of said in-phase component and quadrature component and selecting either said fast Hadamard transform or inverse Hadamard transform output, which outputs a maximum value of said computed sum of the squares.
摘要翻译：参考相位是确定使用正交M进制调制的无线电通信系统，从而容易地实现用于CDMA无线电通信系统的相干检测系统。参考相位的确定通过确定无线电通信系统中的参考相位的步骤来执行，该无线电通信系统使用正交的M元码，包括以下步骤：确定与相应的哈达玛矩阵相对应的同相分量和正交分量的相关值由具有所述同相分量和正交分量的信号的快速Hadamard变换或反Hadamard变换产生，并且通过相移键控从发送端发送正交M代码，计算正交M代码的平方和所述同相分量和正交分量的相应相关值，并选择所述快速哈达玛变换或反哈达玛变换输出，其输出所计算的平方和的最大值。

70. 发明授权

US6108548A Mobile station and soft handoff method 失效
标题翻译：移动台和软切换方式
公开(公告)号：US6108548A
公开(公告)日：2000-08-22
申请号：US924051
申请日：1997-08-28
申请人： Hideto Furukawa , Yasuyuki Oishi , Kazuo Nagatani , Yoshiharu Tajima , Hidenobu Fukumasa
发明人： Hideto Furukawa , Yasuyuki Oishi , Kazuo Nagatani , Yoshiharu Tajima , Hidenobu Fukumasa
IPC分类号： H04B7/02 , H04W36/18 , H04Q7/32
CPC分类号： H04B7/022 , H04W36/18
摘要： A mobile station is provided which does not cause a reduction in the speech transmission capacity. Branches receive radio signals from base stations and operate independently of one another. A branch operation control section controls the operation of the individual branches to detect a destination-side base station based on the reception levels of signals from surrounding base stations, to cause part of the branches to establish synchronization of spreading code and carrier frequency with respect to the destination-side base station while causing the other part of the branches to maintain communication with a departure-side base station after the destination-side base station is detected, and to cut off the communication with the departure-side base station after the synchronization is established.
摘要翻译：提供了不会导致语音传输能力降低的移动台。分支机构接收来自基站的无线电信号，并且彼此独立地操作。分支操作控制部分基于来自周围基站的信号的接收电平来控制各个分支的操作以检测目的地侧基站，以使部分分支建立扩展码和载波频率的相对于目的地侧基站，同时在检测到目的地侧基站之后使分支的其他部分保持与出发侧基站的通信，并且在同步之后切断与出发侧基站的通信成立

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