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公开(公告)号：US08761319B2
公开(公告)日：2014-06-24
申请号：US13814204
申请日：2012-02-13
IPC分类号： H04L27/06
CPC分类号： H04L25/06 , H04L25/061 , H04L27/0014 , H04L27/227 , H04L27/38 , H04L2027/0026
摘要： There are provided a correlation calculation unit that takes a cross-correlation between a signal from which a DC component of an analog baseband signal is removed, and to which a known fixed DC offset is added, and a known signal, an inter-correlation peak phase difference detection unit that estimates a carrier frequency offset from a peak of the calculated correlation vector, and a residual DC offset estimation unit that estimates a residual DC offset component from a mean value of the sidelobe of the calculated correlation vector.
摘要翻译： 提供了一种相关计算单元，其将去除了模拟基带信号的DC分量的信号和已知的固定DC偏移相加的信号与已知信号，相互相关峰 估计从计算出的相关矢量的峰值的载波频率偏移的相位差检测单元，以及从所计算的相关矢量的旁瓣的平均值估计残差DC偏移分量的残差DC偏移估计单元。
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公开(公告)号：US20130329832A1
公开(公告)日：2013-12-12
申请号：US14001061
申请日：2012-02-27
申请人： Tadashi Morita , Naganori Shirakata
发明人： Tadashi Morita , Naganori Shirakata
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/3241 , H03F1/34 , H03F3/24 , H04B2001/0433
摘要： A transmission RF section (101) up-converts a DA-converted test signal into a high-frequency signal. An amplitude of the high-frequency signal, an envelope of which is detected by a loop-back section, is detected by an amplitude detector (400). An inverse characteristic calculator (402) converts the detected amplitude into an amplitude in the transmission RF section (101) using an inverse conversion table (407) and then calculates amplitude inverse characteristics. An FIR filter (103) corrects a signal band of a transmission signal based on a result of an inverse Fourier transform calculated by an IFFT section (405) based on the amplitude inverse characteristics as a variable factor.
摘要翻译： 发送RF部（101）将DA转换后的测试信号上变频为高频信号。 通过振幅检测器（400）检测由环路部分检测到的包络线的高频信号的振幅。 逆特性计算器（402）使用逆转换表（407）将检测到的振幅转换成发送RF部（101）的振幅，然后计算振幅反向特性。 FIR滤波器（103）基于作为可变因子的幅度反向特性，基于由IFFT部（405）计算出的傅里叶逆变换的结果来校正发送信号的信号频带。
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43.发明申请CONTROL DEVICE, COMMUNICATION TERMINAL, CONTROL METHOD, AND COMMUNICATION METHOD 有权控制装置，通信终端，控制方法和通信方法公开(公告)号：US20110261764A1
公开(公告)日：2011-10-27
申请号：US12677730
申请日：2009-07-08
申请人： Naganori Shirakata , Hironori Nakae , Koji Imamura
发明人： Naganori Shirakata , Hironori Nakae , Koji Imamura
IPC分类号： H04W72/04
CPC分类号： H04W72/082 , H04W72/042 , H04W84/10
摘要： In a wireless communication system according to the present invention: a control device and a communication terminal communicate in an active period. The control device: generates a first beacon packet including one or more candidate channels; transmits the first beacon packet at the beginning of the active period; determines whether or not a use channel is to be changed based on a communication state, and generates a second beacon packet including information of a determination result; transmits the second beacon packet at the end of the active period; and, when it is determined that the use channel is to be changed, changes the use channel after the active period ends and before a next active period starts. The communication terminal: receives the first and second beacon packets; and, based on the second beacon packet, changes the use channel after the active period ends and before a next active period starts.
摘要翻译： 在根据本发明的无线通信系统中，控制装置和通信终端在活动期间进行通信。 控制装置：生成包括一个或多个候选信道的第一信标包; 在活动期的开始时发送第一信标分组; 基于通信状态确定是否要改变使用信道，并生成包含确定结果信息的第二信标包; 在活动期结束时发送第二信标包; 并且当确定要改变使用频道时，在有效时段结束之后和在下一活动时段开始之前改变使用频道。 通信终端：接收第一和第二信标分组; 并且基于第二信标包在活动时段结束之后并且在下一活动时段开始之前改变使用频道。
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44.发明申请WIRELESS COMMUNICATION SYSTEM, COMMUNICATION TERMINAL, MANAGEMENT TERMINAL, COMMUNICATION METHOD, AND INTEGRATED CIRCUIT 有权无线通信系统，通信终端，管理终端，通信方法和集成电路公开(公告)号：US20110093593A1
公开(公告)日：2011-04-21
申请号：US12675245
申请日：2009-06-25
申请人： Naganori Shirakata , Yoshitaka Ohta , Hiroshi Doi
发明人： Naganori Shirakata , Yoshitaka Ohta , Hiroshi Doi
IPC分类号： G06F15/173
摘要： A beacon is transmitted and received among a plurality of terminals STA. A terminal STA which transmits the beacon is assigned as a representative terminal MSTA which manages a group, and a terminal STA which receives the beacon is assigned as a belonging terminal SSTA of the group. The representative terminal MSTA obtains identification information from the belonging terminal SSTA and stores the identification information. Then, when receiving an AP beacon from a management terminal AP, the representative terminal MSTA collectively transmits, to the management terminal AP, the identification information of the representative terminal MSTA and the belonging terminal SSTA. The management terminal AP performs an authentication procedure, by using the collectively transmitted identification information, for each of all of the communication terminals which form the group.
摘要翻译： 在多个终端STA之间发送和接收信标。 发送信标的终端STA被分配为管理组的代表性终端MSTA，并且接收到信标的终端STA被分配为该组的归属终端SSTA。 代表终端MSTA从归属终端SSTA获取识别信息并存储识别信息。 然后，当从管理终端AP接收到AP信标时，代表终端MSTA向管理终端AP共同发送代表终端MSTA和归属终端SSTA的识别信息。 管理终端AP对于形成组的所有通信终端中的每一个，通过使用共同发送的识别信息来执行认证过程。
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公开(公告)号：US09065538B2
公开(公告)日：2015-06-23
申请号：US13814914
申请日：2012-01-31
申请人： Naganori Shirakata , Tadashi Morita
发明人： Naganori Shirakata , Tadashi Morita
CPC分类号： H04B1/40 , H04L25/068 , H04L27/2636 , H04L27/32 , H04L27/367
摘要： A transmission-reception device includes a radio frequency section that performs a frequency conversion on a signal which is modulated using a single carrier transmission system, a correction coefficient multiplier that multiplies a frequency domain signal by a distortion correction coefficient in the frequency conversion of the radio frequency section to correct a distortion, a first transformer that converts a time domain signal into a frequency domain signal at a time of reception, and converts the frequency domain signal which is distortion-corrected by the correction coefficient multiplier into a time domain signal at a time of transmission, and a second transformer that converts a time domain signal into a frequency domain signal at a time of transmission, and converts the frequency domain signal which is distortion-corrected by the correction coefficient multiplier into a time domain signal at a time of reception.
摘要翻译： 发送接收装置包括对使用单载波传输系统调制的信号进行频率变换的射频部，将频域信号乘以无线电的频率变换中的失真校正系数的校正系数乘法器 频率部分，用于校正失真;第一变压器，其在接收时将时域信号转换为频域信号，并将由校正系数乘法器进行失真校正的频域信号转换为时域信号， 发送时间以及在发送时将时域信号变换为频域信号的第二变换器，将由校正系数乘法器进行了失真校正的频域信号转换为时域信号 接待处
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公开(公告)号：US08989100B2
公开(公告)日：2015-03-24
申请号：US13814864
申请日：2012-02-06
申请人： Naganori Shirakata , Naoya Yosoku
发明人： Naganori Shirakata , Naoya Yosoku
CPC分类号： H04W52/18 , H04W52/028 , Y02D70/142 , Y02D70/144
摘要： A transmission power controller turns on a power supply to a transmitter at a given time taking a power rise time into account before a start time of transmission processing in the transmitter, and turns off the power supply to the transmitter when the transmission processing is finished. A reception power controller turns on a power supply to a receiver at a given time taking a power rise time into account before a time at which an ACK is assumed to be arrival from a wireless communication device on a receiver side responsive to data transmitted from the transmitter, and turns off the power supply to the receiver when the reception processing of the ACK in the receiver is finished.
摘要翻译： 发送功率控制器在给定时间接通发送机的电源，在发送器的发送处理的开始时间之前考虑上电时间，并且在发送处理结束时关闭向发送机的电力供应。 接收功率控制器在给定时间开启对接收机的电源，在考虑到在从接收机侧的无线通信设备到达ACK的时间之前考虑上电时间，响应于从 发送器，并且当接收器中的ACK的接收处理完成时，关闭接收器的电源。
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公开(公告)号：US20130136216A1
公开(公告)日：2013-05-30
申请号：US13814204
申请日：2012-02-13
IPC分类号： H04L25/06
CPC分类号： H04L25/06 , H04L25/061 , H04L27/0014 , H04L27/227 , H04L27/38 , H04L2027/0026
摘要： There are provided a correlation calculation unit that takes a cross-correlation between a signal from which a DC component of an analog baseband signal is removed, and to which a known fixed DC offset is added, and a known signal, an inter-correlation peak phase difference detection unit that estimates a carrier frequency offset from a peak of the calculated correlation vector, and a residual DC offset estimation unit that estimates a residual DC offset component from a mean value of the sidelobe of the calculated correlation vector.
摘要翻译： 提供了一种相关计算单元，其将去除了模拟基带信号的DC分量的信号和已知的固定DC偏移相加的信号与已知信号，相互相关峰 估计从计算出的相关矢量的峰值的载波频率偏移的相位差检测单元，以及从所计算的相关矢量的旁瓣的平均值估计残差DC偏移分量的残差DC偏移估计单元。
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公开(公告)号：US20130136165A1
公开(公告)日：2013-05-30
申请号：US13814902
申请日：2012-02-07
IPC分类号： H04B1/10
CPC分类号： H04B1/1027 , H04L25/022 , H04L25/0224 , H04L25/03159 , H04L27/2636 , H04L27/2644 , H04L27/265 , H04L27/2655 , H04L27/2672 , H04L27/2675 , H04L2025/03414
摘要： An FFT unit subjects a P-times oversampling output of an AD converter to Fourier transform into a frequency domain signal. A distortion estimation unit estimates a distortion characteristic from a difference between the frequency domain signal and a reference signal. A correction coefficient calculation unit calculates a correction coefficient of a distortion characteristic. A correction unit corrects the frequency domain signal by using the correction coefficient. An IFFT unit subjects the corrected frequency domain signal to inverse Fourier into a time domain signal having the same sampling speed as a symbol speed, and outputs a partial time series.
摘要翻译： FFT单元对AD转换器的P倍过采样输出进行傅里叶变换成频域信号。 失真估计单元从频域信号和参考信号之间的差估计失真特性。 校正系数计算单元计算失真特性的校正系数。 校正单元通过使用校正系数校正频域信号。 IFFT单元将经校正的频域信号逆傅里叶变换成具有与符号速度相同的采样速度的时域信号，并输出部分时间序列。
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49.发明授权Wireless communication system, communication terminal, management terminal, communication method, and integrated circuit 有权无线通信系统，通信终端，管理终端，通信方式和集成电路公开(公告)号：US08255533B2
公开(公告)日：2012-08-28
申请号：US12675245
申请日：2009-06-25
申请人： Naganori Shirakata , Yoshitaka Ohta , Hiroshi Doi
发明人： Naganori Shirakata , Yoshitaka Ohta , Hiroshi Doi
IPC分类号： G06F15/173 , H04L12/26
摘要： A beacon is transmitted and received among a plurality of terminals STA. A terminal STA which transmits the beacon is assigned as a representative terminal MSTA which manages a group, and a terminal STA which receives the beacon is assigned as a belonging terminal SSTA of the group. The representative terminal MSTA obtains identification information from the belonging terminal SSTA and stores the identification information. Then, when receiving an AP beacon from a management terminal AP, the representative terminal MSTA collectively transmits, to the management terminal AP, the identification information of the representative terminal MSTA and the belonging terminal SSTA. The management terminal AP performs an authentication procedure, by using the collectively transmitted identification information, for each of all of the communication terminals which form the group.
摘要翻译： 在多个终端STA之间发送和接收信标。 发送信标的终端STA被分配为管理组的代表性终端MSTA，并且接收到信标的终端STA被分配为该组的归属终端SSTA。 代表终端MSTA从归属终端SSTA获取识别信息并存储识别信息。 然后，当从管理终端AP接收到AP信标时，代表终端MSTA向管理终端AP共同发送代表终端MSTA和归属终端SSTA的识别信息。 管理终端AP对于形成组的所有通信终端中的每一个，通过使用共同发送的识别信息来执行认证过程。
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公开(公告)号：US08179782B2
公开(公告)日：2012-05-15
申请号：US12376157
申请日：2008-02-01
IPC分类号： H04J11/00
CPC分类号： H04L25/0228 , H04L25/06 , H04L27/2647
摘要： An FFT unit (170) separates a received symbol by Fourier conversion into a plurality of subcarriers, and a phase difference detection unit (193) detects a phase difference between 4 pilot carriers and data carriers adjacent to the pilot carriers (adjacent carriers) The decision unit (194) decides whether the phase differences between the pilot carriers and the adjacent carriers detected by the phase difference detection unit (193) fulfill a phase difference condition. Then, the decision unit (194) decides that the received symbol is an HTSIG if the number of phase differences that fulfill the phase difference condition is greater than or equal to a predetermined number, and decides that the received symbol is either a SIG or a DATA if the number of phase differences that fulfill the phase difference condition is less than the predetermined number.
摘要翻译： FFT单元（170）通过傅里叶变换将接收到的符号分离成多个子载波，相位差检测单元（193）检测4个导频载波和与导频载波（相邻载波）相邻的数据载波之间的相位差。 单元（194）判定由相位差检测单元（193）检测的导频载波与相邻载波之间的相位差是否达到相位差条件。 然后，如果满足相位差条件的相位差的数量大于或等于预定数量，则判定单元（194）判定所接收的符号是HTSIG，并且确定接收的符号是SIG或 DATA，如果实现相位差条件的相位差数量小于预定数量。
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