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公开(公告)号：US20130157589A1
公开(公告)日：2013-06-20
申请号：US13814914
申请日：2012-01-31
申请人： Naganori Shirakata , Tadashi Morita
发明人： Naganori Shirakata , Tadashi Morita
IPC分类号： H04B1/40
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：US08467726B2
公开(公告)日：2013-06-18
申请号：US13144565
申请日：2010-08-25
申请人： Naganori Shirakata , Koji Imamura , Yoshitaka Ohta
发明人： Naganori Shirakata , Koji Imamura , Yoshitaka Ohta
IPC分类号： H04B7/00
CPC分类号： A61B5/1118 , A61B5/0002 , A61B5/067 , A61B5/1126 , A61B2560/0209 , H04W4/21 , H04W8/22 , Y02D70/22
摘要： The communication device (10) which performs, when attached to the first region of the moving body, wireless communication with the communication partner device (20) attached to the second region of the moving body includes: a motion obtaining unit (11) which obtains motion information indicating a motion of at least one region of the moving body; a parameter determining unit (12) which determines a parameter corresponding to the motion of the region of the moving body indicated by the motion information obtained by the motion obtaining unit (11), using parameter information in which the motion and a parameter indicating a communication mode for successful wireless communication are associated with each other; and a wireless communication unit (13) which performs wireless communication with the communication partner device (20) according to the parameter determined by the parameter determining unit (12).
摘要翻译： 当连接到移动体的第一区域时，执行与附接到移动体的第二区域的通信对方设备（20）的无线通信的通信设备（10）包括：运动获取单元（11），其获得 指示移动体的至少一个区域的运动的运动信息; 参数确定单元，其使用参数信息来确定由运动获取单元（11）获得的运动信息所指示的与移动体的区域的运动相对应的参数，其中运动和参数指示通信 成功的无线通信模式相互关联; 以及根据由参数确定单元（12）确定的参数与通信对方设备（20）进行无线通信的无线通信单元（13）。
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公开(公告)号：US20130142099A1
公开(公告)日：2013-06-06
申请号：US13814864
申请日：2012-02-06
申请人： Naganori Shirakata , Naoya Yosoku
发明人： Naganori Shirakata , Naoya Yosoku
IPC分类号： H04W52/18
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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34.发明授权Control device, communication terminal, control method, and communication method 有权控制装置，通讯终端，控制方式及通讯方式公开(公告)号：US08274926B2
公开(公告)日：2012-09-25
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： H04B7/212 , H04W4/00 , G06F15/173
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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公开(公告)号：US09191046B2
公开(公告)日：2015-11-17
申请号：US13814902
申请日：2012-02-07
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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公开(公告)号：US20100008346A1
公开(公告)日：2010-01-14
申请号：US12376157
申请日：2008-02-01
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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公开(公告)号：US09203448B2
公开(公告)日：2015-12-01
申请号：US14001061
申请日：2012-02-27
申请人： Tadashi Morita , Naganori Shirakata
发明人： Tadashi Morita , Naganori Shirakata
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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38.发明授权公开(公告)号：US09065698B2
公开(公告)日：2015-06-23
申请号：US13322608
申请日：2010-12-08
CPC分类号： H04L27/06 , H04L25/0262 , H04L25/49
摘要： A radio (102) in a sensor network and powered by electricity includes a data communicating unit (114) performing data communication; and a pulse interval demodulating unit (111) configured to (i) detect, from a signal (11c) with signals for corresponding frequency channels overlapped, a frequency channel indicated by a time interval between two pulses in a wake-up signal (1R) included in one of the frequency channels and (ii) cause the data communicating unit (114) to perform the data communication over the detected frequency channel.
摘要翻译： 传感器网络中由电力供电的无线电设备（102）包括执行数据通信的数据通信单元（114） 以及脉冲间隔解调单元（111），被配置为（i）从信号（11c）检测与重叠的相应频率信道的信号相关联的频率信道，所述频道由唤醒信号（1R）中的两个脉冲之间的时间间隔指示， 包括在一个频道中，（ii）使数据通信单元（114）通过所检测的频道执行数据通信。
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公开(公告)号：US20140086229A1
公开(公告)日：2014-03-27
申请号：US14110382
申请日：2013-02-27
CPC分类号： H04L69/22 , H03M13/1111 , H03M13/6325 , H03M13/6527 , H04L1/005 , H04L1/0057 , H04L1/0063 , H04L1/0072 , H04L25/03057
摘要： A demodulation section demodulates a received signal. A decoding section decodes an output from the demodulation section. A buffer temporarily stores a portion of the received signal. A header analyzing section gives the buffer timing at which demodulation and decoding of a payload of the received signal are initiated, on the basis of a result of combination of a plurality of header sequences included in a header of the received signal and results of processing of the demodulation section and the decoding section. An improved SNR is achieved by means of combination of the plurality of header sequences, so that an iterative decoding count used for decoding the header become smaller.
摘要翻译： 解调部分对接收到的信号进行解调。 解码部分解码来自解调部分的输出。 缓冲器临时存储接收信号的一部分。 报头分析部分根据包括在接收信号的报头中的多个标题序列的组合结果和处理结果的结果给出了接收信号的有效载荷的解调和解码的缓冲定时 解调部分和解码部分。 通过多个标题序列的组合来实现改进的SNR，从而用于解码报头的迭代解码计数变小。
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40.发明申请公开(公告)号：US20120069893A1
公开(公告)日：2012-03-22
申请号：US13322608
申请日：2010-12-08
IPC分类号： H04L27/00
CPC分类号： H04L27/06 , H04L25/0262 , H04L25/49
摘要： A radio (102) in a sensor network and powered by electricity includes a data communicating unit (114) performing data communication; and a pulse interval demodulating unit (111) configured to (i) detect, from a signal (11c) with signals for corresponding frequency channels overlapped, a frequency channel indicated by a time interval between two pulses in a wake-up signal (1R) included in one of the frequency channels and (ii) cause the data communicating unit (114) to perform the data communication over the detected frequency channel.
摘要翻译： 传感器网络中由电力供电的无线电设备（102）包括执行数据通信的数据通信单元（114） 以及脉冲间隔解调单元（111），被配置为（i）从信号（11c）检测与重叠的相应频率信道的信号相关联的频率信道，所述频道由唤醒信号（1R）中的两个脉冲之间的时间间隔指示， 包括在一个频道中，（ii）使数据通信单元（114）通过所检测的频道执行数据通信。
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