公开(公告)号：EP1919090A4

公开(公告)日：2014-04-30

申请号：EP06810494

申请日：2006-09-25

Applicant: PANASONIC CORP

Inventor： URUSHIHARA TOMOYA ,  MATSUOKA AKIHIKO ,  ABE KATSUAKI ,  MIYANO KENTARO ,  SAKAMOTO TAKENORI

IPC: H04B1/3822 ,  H04B1/40 ,  H04B1/707 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04M3/00 ,  H04W8/24 ,  H04W76/02 ,  H04W88/02 ,  H04W88/06

CPC classification number: H04B1/406 ,  H04W88/06

Abstract: A multimode wireless communication apparatus that supports plural wireless communication systems and switches communication systems to communicate. The apparatus includes a signal processor capable of switching communication systems by plural manners; and a controller that directs to the signal processor a combination of manners of switching communication systems according to a communication environment. The signal processor switches communication systems according to the combination of manners of switching communication systems directed from the controller.

公开(公告)号：EP1744571A4

公开(公告)日：2011-12-28

申请号：EP05720185

申请日：2005-03-07

Applicant: PANASONIC CORP ,  KOHNO RYUJI

Inventor： KOHNO RYUJI ,  ABE KATSUAKI ,  SAKAMOTO TAKENORI ,  MATSUOKA AKIHIKO ,  TANIGUCHI MOTOKO

IPC: H04W16/14 ,  H04L12/28

CPC classification number: H04W16/14 ,  H04W72/04 ,  H04W88/06

公开(公告)号：EP1750376A4

公开(公告)日：2011-10-26

申请号：EP05748830

申请日：2005-06-13

Applicant: PANASONIC CORP

Inventor： ABE KATSUAKI ,  MATSUO MICHIAKI ,  SAITO NORIAKI ,  SAKAMOTO TAKENORI ,  MATSUOKA AKIHIKO

IPC: H04B1/38 ,  H01B7/26 ,  H04W88/06

CPC classification number: H04W88/06 ,  H04B1/0003

Abstract: There are provided a plurality of systems of reconfigurable radio processing unit (102) whose function and performance can be modified. A control unit (104) collects quality information on the communication link in communication methods received at respective radio processing systems (102a, 102b). According to this, the control unit (104) selects an optimal communication method and transmission mode from a plurality of communication methods and transmission modes (for example, diversity transmission between a plurality of systems, diversity transmission by a single communication method, and MIMO channel multiplex transmission). By modifying configurations of the reconfigurable radio processing unit (102) according to the selected communication method and transmission mode, it is possible to communicate at a desired transmission mode. Thus, it is possible to perform an optimal transmission to the communication link according to the quality condition and other request condition.

公开(公告)号：JP2014003393A

公开(公告)日：2014-01-09

申请号：JP2012136215

申请日：2012-06-15

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： HARIYA WITCHASANA ,  YU ZHAN ,  CHIEN KOH WEI ,  SAKAMOTO TAKENORI

IPC: H04J11/00 ,  H04J1/00 ,  H04L7/08 ,  H04L27/01

Abstract: PROBLEM TO BE SOLVED: To provide a preamble generating method capable of reducing the power consumed for preamble generation.SOLUTION: The preamble generating method using plural kinds of code sequences includes the steps of: selecting plural pieces of partial information of previously generated code sequences after rate conversion for each combination pattern of code sequences neighboring to each of the code sequences with respect to each code sequence before rate conversion; and generating a code sequence after rate conversion by using the selected plural pieces of partial information.

Abstract translation: 要解决的问题：提供一种能够减少前导码生成消耗的功率的前同步码生成方法。解决方案：使用多种码序列的前同步码生成方法包括以下步骤：选择先前生成的代码序列的多条部分信息， 对每个代码序列相邻的代码序列的每个组合模式相对于速率转换之前的每个代码序列的速率转换; 以及通过使用所选择的多条部分信息来生成速率转换后的代码序列。

公开(公告)号：JP2013143649A

公开(公告)日：2013-07-22

申请号：JP2012002455

申请日：2012-01-10

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： SHIRAKAWA YOSHINORI ,  SHIRAKATA YUKIMUNE ,  SAKAMOTO TAKENORI ,  URABE YOSHIO

IPC: H04B7/005 ,  H04B3/10

CPC classification number: Y02D70/00 ,  Y02D70/44

Abstract: PROBLEM TO BE SOLVED: To provide a radio communication device and the like that can reduce peak power at the time of reception processing.SOLUTION: A radio communication device comprises: a distortion estimation unit 11 for estimating a consecutive distortion correction value which is a correction value for correcting consecutive signal distortion in the frequency domain of a reception signal; a channel estimation unit 9 for estimating a non-consecutive distortion correction value which is a correction value for correcting non-consecutive signal distortion in the frequency domain of the reception signal after the consecutive distortion correction value is first estimated; and a filter 5 for performing equalization processing in the frequency domain to the reception signal on the basis of the consecutive distortion correction value and non-consecutive distortion correction value.

Abstract translation: 要解决的问题：提供一种能够降低接收处理时的峰值功率的无线通信装置等。解决方案：无线通信装置包括：失真估计单元11，用于估计作为校正的连续失真校正值 用于校正接收信号的频域中的连续信号失真的值; 信道估计单元9，用于在首先估计连续失真校正值之后，估计作为用于校正接收信号的频域中的非连续信号失真的校正值的非连续失真校正值; 以及滤波器5，用于根据连续失真校正值和非连续失真校正值，对频域进行接收信号的均衡处理。

公开(公告)号：JP2009100298A

公开(公告)日：2009-05-07

申请号：JP2007270369

申请日：2007-10-17

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： OYAMA TAKAHIRO ,  ASANO HITOSHI ,  TOKI KAZUYA ,  SAKAMOTO TAKENORI

IPC: H04L27/38

Abstract: PROBLEM TO BE SOLVED: To provide a receiving device achieving symbol synchronization without performing oversampling. SOLUTION: The receiving device 1 comprises: a quadrature detection section 100 which performs quadrature detection processing on a reception signal and outputs a quadrature detection signal; a clock generation section 107 for generating a clock equal to a symbol rate of the reception signal; a variable delay section 108 which performs delay control on the clock generated by the clock generation section 107; first sample section 102 and second sample section 103 for sampling the quadrature detection signal in accordance with the clock input via the variable delay section 108 to output a quadrature detection sample value; and a complex amplitude calculation section 106 for calculating a complex amplitude of the reception signal using the quadrature detection sample value. The variable delay section 108 stores, as a complex amplitude reference value, the complex amplitude calculated by the complex amplitude calculation section 106 in a state where pull-in has been completed, and controls a delay amount of the clock so as to perform sampling in such timing that a complex amplitude equal to the complex amplitude reference value can be obtained. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种在不执行过采样的情况下实现符号同步的接收装置。 接收装置1包括：正交检测部100，对接收信号进行正交检测处理，并输出正交检测信号; 用于产生等于接收信号的符号率的时钟的时钟产生部分107; 可变延迟部分108，对由时钟产生部分107生成的时钟执行延迟控制; 第一采样部分102和第二采样部分103，用于根据经由可变延迟部分108输入的时钟对正交检测信号进行采样，以输出正交检测样本值; 以及用于使用正交检测样本值来计算接收信号的复振幅的复振幅计算部分106。 可变延迟部分108将复数振幅计算部分106计算出的复数振幅作为复振幅参考值存储在已经完成拉入的状态下，并且控制时钟的延迟量以便进行采样 可以获得等于复振幅参考值的复振幅的定时。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2010057088A

公开(公告)日：2010-03-11

申请号：JP2008222097

申请日：2008-08-29

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： OYAMA TAKAHIRO ,  SAKAMOTO TAKENORI

IPC: H04J13/00 ,  H04B1/719 ,  H04L27/02

CPC classification number: H04L25/0216 ,  H04B1/71637 ,  H04B1/7183 ,  H04L25/0224 ,  H04L25/0226 ,  H04L27/06 ,  H04L2025/03388

Abstract: PROBLEM TO BE SOLVED: To perform appropriate propagation path estimation using amplitude information of a reception signal.
SOLUTION: In a receiving apparatus, a detection unit 102 acquires a detection signal sequence by extracting amplitude information of an OOK modulation signal sequence obtained by performing OOK (On Off Keying) modulation on a known CES (Channel Estimation Sequence) constituted of data "0" and "1", a "1" detection section 1042 acquires an extraction signal sequence by extracting only a sample value corresponding to the data "1" from sample values of the detection signal sequence, and a correlation arithmetic operation section 1043 arithmetically operates a correlation between the extraction signal sequence and the CES. A propagation delay estimation section 1044 then estimates a propagation delay amount of a CIR (Channel Impulse Response) from the arithmetic operation of the correction, and an amplitude coefficient estimation section 1045 estimates an amplitude coefficient of the CIR from the arithmetic operation of the correlation.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：使用接收信号的幅度信息进行适当的传播路径估计。 解决方案：在接收装置中，检测单元102通过提取通过对由已知的CES（信道估计序列）构成的已知CES（信道估计序列）执行OOK（On Off Keying）调制获得的OOK调制信号序列的振幅信息来获取检测信号序列 数据“0”和“1”时，“1”检测部1042通过从检测信号序列的采样值中仅提取与数据“1”相对应的采样值来获取提取信号序列，相关运算部1043 算术地操作提取信号序列和CES之间的相关性。 然后，传播延迟估计部分1044从校正的算术运算估计CIR（信道脉冲响应）的传播延迟量，并且幅度系数估计部1045从相关的算术运算估计CIR的幅度系数。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2014165863A

公开(公告)日：2014-09-08

申请号：JP2013037684

申请日：2013-02-27

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： SAKAMOTO TAKENORI

IPC: H04L27/22

Abstract: PROBLEM TO BE SOLVED: To provide a receiver capable of increasing the accuracy in estimation of carrier frequency error.SOLUTION: The receiver receives a signal which is modulated in a modulation manner to rotate the phase. The phase of a sampling signal is rotated inversely by a rotation amount corresponding to the modulation manner. The correlation values between the signal and predetermined signals are calculated in order. From the correlation values, a maximum values in the maximum correlation values, which are periods divided according to the modulation manner and are rotated by a rotation amount according to the modulation manner, is output in order. The carrier frequency error between a transmitter and the receiver is estimated according to the phase rotation amount among plural maximum correlation values. The phase of the sampling signal is rotated according to the estimated carrier frequency error.

Abstract translation: 要解决的问题：提供能够提高载波频率误差的估计精度的接收机。解决方案：接收机接收以调制方式调制的信号以旋转相位。 采样信号的相位反转旋转对应于调制方式的旋转量。 按顺序计算信号与预定信号之间的相关值。 根据相关值，根据调制方式分割的周期和根据调制方式旋转旋转量的最大相关值中的最大值被依次输出。 根据多个最大相关值中的相位旋转量来估计发射机与接收机之间的载波频率误差。 采样信号的相位根据估计的载波频率误差而旋转。

公开(公告)号：JP2012209736A

公开(公告)日：2012-10-25

申请号：JP2011073446

申请日：2011-03-29

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： SHIRAKATA YUKIMUNE ,  SAKAMOTO TAKENORI ,  YOSOKU NAOYA

IPC: H04B7/005

CPC classification number: H04B1/1027 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/03159 ,  H04L27/2636 ,  H04L27/2644 ,  H04L27/265 ,  H04L27/2655 ,  H04L27/2672 ,  H04L27/2675 ,  H04L2025/03414

Abstract: PROBLEM TO BE SOLVED: To compensate for symbol timing deviation even when the symbol rate is so fast that symbol synchronization in time-domain processing is difficult.SOLUTION: An AD converter 101 oversamples a reception signal at P-times the symbol rate. An FFT unit 105 applies the Fourier transform to PN points from the output from the AD converter 101 for conversion to a frequency domain signal. A distortion estimation unit 106 estimates distortion characteristics or phase error characteristics from the difference between the frequency domain signal and a frequency domain signal of a reference signal. A correction coefficient calculation unit 107 calculates a correction coefficient for the distortion characteristics or phase error characteristics. A correction unit 108 multiplies the output from the FFT unit 105 by the correction coefficient to correct the frequency domain signal. An IFFT unit 109 applies the inverse Fourier transform to the corrected N-point frequency domain signal for conversion to an N-point time domain signal having the same sampling rate as the symbol rate, and outputs a partial time series.

Abstract translation: 要解决的问题：为了补偿符号时间偏差，即使符号率太快，使得时域处理中的符号同步困难。 解决方案：AD转换器101以符号率的P倍抽样接收信号。 FFT单元105将来自AD转换器101的输出的傅里叶变换应用于PN点以进行频域信号。 失真估计单元106根据频域信号和参考信号的频域信号之间的差估计失真特性或相位误差特性。 校正系数计算单元107计算失真特性或相位误差特性的校正系数。 校正单元108将来自FFT单元105的输出乘以校正系数以校正频域信号。 IFFT单元109将逆傅里叶变换应用于校正的N点频域信号，以转换为具有与符号率相同的采样率的N点时域信号，并输出部分时间序列。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013143650A

公开(公告)日：2013-07-22

申请号：JP2012002456

申请日：2012-01-10

Applicant: Panasonic Corp ,  パナソニック株式会社

Inventor： SAKAMOTO TAKENORI

IPC: H04B1/7085

Abstract: PROBLEM TO BE SOLVED: To provide a synchronizing device capable of establishing synchronization by one correlator.SOLUTION: A synchronizing device includes; a sampling portion 101 for sampling a received signal at a rate n times as large as a symbol rate; delay portions 103 and 105 for generating a plurality of delay samples having different phases by delaying a received sample 102; a selector 107 for selecting one from the received sample and the plurality of delay samples; a down-sampling portion 109 for down-sampling the selected sample by the symbol rate to generate a decimation sample; a correlator 111 for successively computing correlation values between the selected samples and a predetermined correlation code; a correlation value detecting portion 113 for detecting a first correlation value which is not less than a predetermined correlation value, a second correlation value computed before the first correlation value is computed, and a third correlation value computed after the first correlation value is computed; and a control portion 123 for controlling the selection of the selector 107 on the basis of the detected first correlation value, second correlation value, and third correlation value.

Abstract translation: 要解决的问题：提供能够通过一个相关器建立同步的同步装置。解决方案：同步装置包括： 采样部分101，用于以符号率n倍的速率对接收信号进行采样; 延迟部分103和105，用于通过延迟接收的样本102来产生具有不同相位的多个延迟样本; 选择器107，用于从接收的采样和多个延迟样本中选择一个; 下采样部分109，用于通过符号率对所选样本进行下采样以产生抽取样本; 相关器111，用于连续地计算所选样本之间的相关值和预定的相关代码; 相关值检测部分113，用于检测不小于预定相关值的第一相关值，计算第一相关值之前计算的第二相关值;以及计算第一相关值之后计算的第三相关值; 以及控制部分123，用于根据检测到的第一相关值，第二相关值和第三相关值来控制选择器107的选择。