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1. 发明专利

JP2007295257A Noise power calculation means and s/n estimation means 审中-公开
标题翻译：噪声功率计算方法和S / N估计方法
公开(公告)号：JP2007295257A
公开(公告)日：2007-11-08
申请号：JP2006120648
申请日：2006-04-25
申请人： Mitsubishi Electric Corp , Tohoku Univ , 三菱電機株式会社 , 国立大学法人東北大学
发明人： FUJIMURA AKINORI , TAKAGI SUNAO , NAKASE HIROYUKI , NAGAI YUKIMASA , SOGABE YASUSHI , TSUBOUCHI KAZUO
IPC分类号： H04J11/00
摘要： PROBLEM TO BE SOLVED: To obtain a power noise calculation means which is capable of calculating a noise power N by simpler operations, while keeping the equivalent performance level as that of the conventional means. SOLUTION: A noise power calculation means 30 which calculates the noise power of a receiving signal, on the basis of the receiving signal, having a frame configuration including K fixed patterns (K is an integer equal to or larger than 2) each of which being constituted of a data sequence of J samples (J is an integer equal to or larger than 1), includes a subtraction means 11, which outputs a result of subtraction between data of n-th samples (n is an integer equal to or larger than 1 and equal to or smaller than J) of two fixed patterns from among K fixed patterns, as difference data; an L-th power means which outputs a result, obtaining by raising the difference data to the L-th power (L is an integer equal to or larger than 2), as difference power data; and an integration means 13 which outputs an integration result, obtained by accumulating difference power data with respect to J samples, as the noise power. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了获得能够通过更简单的操作来计算噪声功率N的功率噪声计算装置，同时保持与常规装置相同的性能水平。解决方案：噪声功率计算装置30，其基于接收信号计算接收信号的噪声功率，该接收信号具有包括K个固定模式（K是等于或大于2的整数）的帧配置其由J个采样的数据序列（J是1以上的整数）构成，包括：减法装置11，输出第n个采样的数据之间的减法结果（n为等于或大于1且等于或小于J）的两个固定图案作为差分数据; 输出结果的L电力单元，将差分数据提高为L次幂（L为2以上的整数）获得，作为差分功率数据; 以及积分装置13，其输出通过累积关于J个采样的差分功率数据获得的积分结果作为噪声功率。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2008017415A Wireless communication system 有权
标题翻译：无线通信系统
公开(公告)号：JP2008017415A
公开(公告)日：2008-01-24
申请号：JP2006189285
申请日：2006-07-10
申请人： Mitsubishi Electric Corp , Tohoku Univ , 三菱電機株式会社 , 国立大学法人東北大学
发明人： TSUBOUCHI KAZUO , TAKAGI SUNAO , NAKASE HIROYUKI , KAMEDA TAKU , OSHIMA SHOICHI , FUJIMURA AKINORI , SOGABE YASUSHI , ISHIZU FUMIO
IPC分类号： H04J1/00 , H04B7/06 , H04B7/12
摘要： PROBLEM TO BE SOLVED: To obtain a wireless communication system that has a wireless transmission device, which is provided with a highly-efficient amplifier and facilitates its configuration, and a wireless receiver.
SOLUTION: The wireless transmission device 10 is provided with a serial-parallel converter 11, a constant envelope modulator 12 and a D/A converter 13 which modulate a digital signal of each channel to a constant envelope modulated signal respectively so as to convert the digital signal into an analog signal, a frequency converter 14 for converting the signal of each channel into a different carrier frequency, the amplifier 15 for amplifying the constant envelope modulated signal of each channel, and an antenna 19 that wirelessly transmits the amplified signal into space for each channel. The wireless receiver 20 is provided with an antenna 21, a demultiplexer 22 for demultiplexing a received signal, a frequency converter 23 and an A/D converter 24 which convert the signal of each channel into a baseband frequency so as to convert the signal into the digital signal, a constant envelope demodulator 25 for demodulating the constant envelop demodulated signal of each channel, and a parallel-serial converter 26 that restores the original input digital signal from the digital signal demodulated for each channel.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了获得具有设置有高效放大器并且便于其配置的无线传输设备的无线通信系统和无线接收器。解决方案：无线传输设备10设置有串行 - 并行转换器11，恒定包络调制器12和D / A转换器13，其分别将每个通道的数字信号调制到恒定包络调制信号，以便将数字信号转换成模拟信号，用于将每个信道的信号转换成不同载波频率的频率转换器14，用于放大每个信道的恒定包络调制信号的放大器15以及无线发送放大信号的天线19 进入每个通道的空间。无线接收机20设置有天线21，用于解复用接收信号的解复用器22，频率转换器23和A / D转换器24，其将每个信道的信号转换为基带频率，以将信号转换为数字信号，用于解调每个通道的恒定包络解调信号的恒定包络解调器25以及从为每个通道解调的数字信号恢复原始输入数字信号的并行串行转换器26。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2008172360A Operation circuit and wireless communication apparatus employing it 有权
标题翻译：操作电路和无线通信设备
公开(公告)号：JP2008172360A
公开(公告)日：2008-07-24
申请号：JP2007001760
申请日：2007-01-09
申请人： Mitsubishi Electric Corp , Tohoku Univ , 三菱電機株式会社 , 国立大学法人東北大学
发明人： FUJIMURA AKINORI , TAKAGI SUNAO , NAKASE HIROYUKI , ISHIZU FUMIO , SOGABE YASUSHI , TSUBOUCHI KAZUO , KAMEDA TAKU
IPC分类号： H04L27/00
摘要： PROBLEM TO BE SOLVED: To attain high speed operation while reducing the circuit scale.
SOLUTION: An operation circuit for determining an approximation straight line by a method of least square using a plurality of sample data comprises a means for decimating predetermined data from sample data stored in a memory 3, an operating section 4 for determining an approximation straight line by a method of least square using decimated data, and an operating means 7 for approximating the denominator of division operation in the operating section 4 to the power of 2. Consequently, high speed operation can be attained while reducing the circuit scale.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：在减小电路规模的同时实现高速运行。解决方案：一种用于通过使用多个样本数据的最小二乘法的方法来确定近似直线的运算电路包括用于从存储在存储器3中的采样数据中抽取预定数据的装置，用于确定近似值的操作部分4 通过使用抽取数据的最小平方法的直线，以及用于将操作部分4中的除法运算的分母近似为2的操作装置7.因此，可以在减小电路规模的同时获得高速运行。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2008258851A Communication device 有权
标题翻译：通信设备
公开(公告)号：JP2008258851A
公开(公告)日：2008-10-23
申请号：JP2007097844
申请日：2007-04-03
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SOGABE YASUSHI , KURITA AKIRA
IPC分类号： H04B7/26 , H04W4/04 , H04W16/02 , H04W76/02
摘要： PROBLEM TO BE SOLVED: To obtain a communication device which starts communication in a short time without hindering road-vehicle communication, with respect to inter-vehicle communication performed by using the same frequency as road-vehicle communication.
SOLUTION: The communication device which performs inter-vehicle communication by using an unused channel out of a plurality of communication channels assigned for road-vehicle communication, includes: a data processing part (7) which selects a communication channel candidate for use in inter-vehicle communication; a CS part (5) which compares a reception signal level in the communication channel candidate with a prescribed threshold and determined whether the communication channel candidate is not used or not; a demodulation part (32) which demodulates a reception signal to output a demodulated signal including determination information for determining whether the communication channel candidate is used in road-vehicle communication or not; and a communication determination part (6) which determines whether confirmation processing of determination information is necessary or not on the basis of a carrier sense result and determines whether inter-vehicle communication using the communication channel candidate is possible or not in the case that the confirmation processing is determined to be necessary.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了获得在短时间内开始通信而不阻碍道路车辆通信的通信设备，关于通过使用与道路车辆通信相同的频率进行的车辆间通信。解决方案：通过使用分配给道路车辆通信的多个通信信道中的未使用信道进行车内通信的通信装置包括：数据处理部（7），其选择通信候选使用在车内通信; CS部分（5），其将通信信道候选中的接收信号电平与规定的阈值进行比较，并确定通信信道候选是否不被使用; 解调部（32），其对接收信号进行解调，以输出解调信号，所述解调信号包括用于确定通信信道候选是否用于道路车辆通信中的确定信息; 以及通信决定部（6），其基于载波侦听结果来判定是否需要确定信息的确认处理，并且在确认是否可以使用通信信道候选者的车辆间通信是否可行的情况下，处理被确定为必要。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2007005931A Clock recovery circuit and method 有权
标题翻译：时钟恢复电路和方法
公开(公告)号：JP2007005931A
公开(公告)日：2007-01-11
申请号：JP2005181086
申请日：2005-06-21
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KURITA AKIRA , SOGABE YASUSHI , ISHIZU FUMIO
IPC分类号： H04L27/22 , H04L7/00
摘要： PROBLEM TO BE SOLVED: To obtain a circuit for recovering a clock signal from an input signal containing a clock signal component with high precision. SOLUTION: The clock recovery circuit comprises a section (9) for generating a rotation factor of such a frequency as a predetermined deviation is added to a desired clock frequency, a section (21) performing correlation processing by multiplying an input signal by the rotation factor, a section (22) for removing noise components from a signal subjected to correlation processing by averaging, and a section (23) performing reverse modulation by multiplying a signal from which noise components are removed by the rotation factor. The clock signal is recovered based on a signal subjected to reverse modulation. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：从具有高精度的时钟信号分量的输入信号中获得用于恢复时钟信号的电路。解决方案：时钟恢复电路包括用于产生这样的频率的旋转因子的部分（9），其中预定偏差被加到期望的时钟频率上;部分（21）通过将输入信号乘以旋转因子，用于通过平均从经过相关处理的信号中去除噪声分量的部分（22）;以及通过将噪声分量除去的信号乘以旋转因子来执行反向调制的部分（23）。基于经过反向调制的信号恢复时钟信号。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2008311727A Communication control method and in-vehicle communication equipment 审中-公开
标题翻译：通信控制方法和车载通信设备
公开(公告)号：JP2008311727A
公开(公告)日：2008-12-25
申请号：JP2007155140
申请日：2007-06-12
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SOGABE YASUSHI
IPC分类号： H04B7/26 , H04L12/28
摘要： PROBLEM TO BE SOLVED: To provide a communication control method for actualizing inter-vehicle communication between specific vehicles while suppressing the occurrence of congestion in an ad hoc network. SOLUTION: The communication control method is performed by any in-vehicle communication equipment in the ad hoc network comprising in-vehicle communication equipment for performing communication by using any one of a plurality of slots which comprise a communication frame, and the method includes: a determination step for determining, on the basis of positional relationship between the in-vehicle communication equipment, a slot used by each in-vehicle communication equipment, the number of slots comprising the communication frame, and a slot used by each in-vehicle communication equipment; and a notification step for notifying each in-vehicle communication equipment of a determined result. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于实现特定车辆之间的车辆间通信同时抑制自组织网络中的拥塞的发生的通信控制方法。解决方案：通信控制方法由包括车载通信设备的自组织网络中的任何车载通信设备执行，用于通过使用包括通信帧的多个时隙中的任何一个来执行通信，并且该方法包括：确定步骤，用于基于车载通信设备之间的位置关系，确定每个车载通信设备使用的时隙，包括通信帧的时隙数量和每个在线通信设备使用的时隙，车辆通讯设备; 以及通知步骤，用于通知每个车载通信设备确定的结果。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2008256475A Position estimation method and device 审中-公开
标题翻译：位置估计方法和设备
公开(公告)号：JP2008256475A
公开(公告)日：2008-10-23
申请号：JP2007097798
申请日：2007-04-03
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SOGABE YASUSHI , OCHIAI MARI
IPC分类号： G01S5/14 , H04W64/00
摘要： PROBLEM TO BE SOLVED: To provide a position estimation method capable of estimating a position highly accurately by removing an effect of a shield to a radio wave, in position estimation using the radio wave.
SOLUTION: In a position estimation system constituted of a plurality of reference stations installed fixedly and a position estimation device, the position estimation method in the case where the position estimation device estimates the position of a moving terminal in the system includes a correction information calculation step of calculating beforehand correction information on the position based on a physical property of the shield and on a physical property of the radio wave transmitted from the moving terminal, a position estimation step of estimating the position of the moving terminal based on a propagation time between each reference station and the moving terminal, a determination step of determining whether an estimation result in the position estimation step includes an estimation error caused by an effect of the shield, and a correction step of correcting the estimation result by using the correction information calculated beforehand when determined that the estimation result includes the estimation error caused by the effect of the shield in the determination step.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种位置估计方法，其能够通过消除对电波的屏蔽的影响来高精度地估计位置，在使用无线电波的位置估计中。解决方案：在由固定安装的多个参考站和位置估计装置构成的位置估计系统中，位置估计装置估计系统中的移动终端的位置的情况下的位置估计方法包括校正信息计算步骤，基于所述屏蔽体的物理属性和从所述移动终端发送的所述无线电波的物理性质，预先计算所述位置的校正信息;基于传播来估计所述移动终端的位置的位置估计步骤每个参考站与移动终端之间的时间;确定步骤，确定位置估计步骤中的估计结果是否包括由屏蔽的效果引起的估计误差;以及校正步骤，通过使用校正信息来校正估计结果在确定估计时事先计算结果包括由确定步骤中的屏蔽的影响引起的估计误差。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2004356801A Multi-band oscillator 有权
标题翻译：多波段振荡器
公开(公告)号：JP2004356801A
公开(公告)日：2004-12-16
申请号：JP2003150340
申请日：2003-05-28
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KAGEYAMA CHIEMI , KAWAKAMI KENJI , TANIGUCHI EIJI , SUEMATSU KENJI , TAKAGI SUNAO , SOGABE YASUSHI , SUNAGA TERUMI , SHIMOZAWA MITSUHIRO , MORI KAZUTOMI , TAJIMA KENICHI , TSURU MASAOMI
IPC分类号： H03L7/18 , H03L7/08 , H03L7/183 , H04B1/3822 , H04B1/40
摘要： PROBLEM TO BE SOLVED: To realize a multi-band oscillator having a plurality of desired bands capable of covering the frequency band of a plurality of communication systems by connecting a single oscillator with wideband frequency dividers by two, and to obtain a multi-band oscillator in which reduction in cost and size of a multi-band transceiver is realized. SOLUTION: The multi-band oscillator comprises a frequency synthesizer 1 corresponding to a communication system having a highest frequency band, n frequency dividers by two 2-1 to 2-n, n switches 3-1 to 3-n, an output terminal 4 connected with the n-th frequency divider by two 2-n, and a frequency control section 5 for controlling the frequency synthesizer 1 and the switches 3-1 to 3-n wherein the variable frequency range of the frequency synthesizer 1 is set at octave. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了实现具有能够通过将具有宽带分频器的单个振荡器连接两个而能够覆盖多个通信系统的频带的多个期望频带的多频带振荡器，并且获得多带式振荡器，其中实现了多频带收发器的成本和尺寸的降低。解决方案：多频带振荡器包括频率合成器1，其对应于具有最高频带的通信系统，n个分频器由2-1至2-n，n个开关3-1至3-n，输出端子4与第n分频器连接两个2-n，频率控制部分5用于控制频率合成器1和开关3-1至3-n，其中频率合成器1的可变频率范围为设置在八度。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2004147052A Digital modulation device 审中-公开
公开(公告)号：JP2004147052A
公开(公告)日：2004-05-20
申请号：JP2002309414
申请日：2002-10-24
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： ARAKI HIROSHI , SOGABE YASUSHI , TAKIKITA MAMORU
IPC分类号： H04L27/04 , H04L27/20 , H04L27/36
摘要： PROBLEM TO BE SOLVED: To simplify constitution compared to a conventional technique, to lower costs and to selectively switch to one of QPSK and ASK to perform modulation. SOLUTION: A QPSK modulator 60 modulates carrier waves by QPSK and outputs QPSK signals on the basis of I axis signals of a plurality of values and Q axis signals of a plurality of values practically orthogonal to each other. A base band processing part 1 for QPSK, a base band processing part 2 for ASK and a transmission common signal processing part 11 generate binary I axis signals changing between the intersection of an I axis and a Q axis and a signal point on the I axis and the Q axis signals of zero value and input them to the QPSK modulator on the basis of inputted digital data signals in response to selection signals indicating the selection of ASK and generate the I axis signals of a plurality of values and the Q axis signals of a plurality of values and input them to the QPSK modulator on the basis of the inputted digital data signals in response to the selection signals indicating the selection of QPSK and thus the carrier waves are modulated by QPSK or ASK. COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2006197233A Frequency selection apparatus and reader/writer management apparatus 有权
标题翻译：频率选择装置和读写器/写入管理装置
公开(公告)号：JP2006197233A
公开(公告)日：2006-07-27
申请号：JP2005006529
申请日：2005-01-13
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： AIKAWA HIDETO , TONOI TETSUYA , SOGABE YASUSHI , OCHIAI MARI
IPC分类号： H04B1/59 , G06K17/00 , H04B5/02
摘要： PROBLEM TO BE SOLVED: To provide a frequency selection apparatus and a reader/writer management apparatus whereby a stable operation of a system can be achieved by avoiding contention of frequency resources. SOLUTION: The frequency selection apparatus is provided with a frequency selection section 12 that preferentially selects a frequency with higher priority among frequencies F1 to F4 stored in a frequency storage section 11 at the execution of wireless communication with an RF ID tag, discriminates a state of use of the frequency selected by the frequency selection section 12, instructs the frequency selection section 12 to select another frequency when the selected frequency is used at present, or instructs the frequency selection section 12 to complete frequency selection when the selected frequency is not in use. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种频率选择装置和读/写器管理装置，由此可以通过避免频率资源的争用来实现系统的稳定操作。解决方案：频率选择装置设置有频率选择部分12，其在执行与RF ID标签的无线通信时优先选择存储在频率存储部分11中的频率F1至F4中具有较高优先级的频率，鉴别由频率选择部分12选择的频率的使用状态指示频率选择部分12当前使用所选择的频率时选择另一个频率，或者指示频率选择部分12在选择的频率为不使用版权所有（C）2006，JPO＆NCIPI

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