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1. 发明授权

US09712316B2 Reception apparatus, phase error estimation method, and phase error correction method 有权
公开(公告)号：US09712316B2
公开(公告)日：2017-07-18
申请号：US14770406
申请日：2014-02-20
申请人： Panasonic Corporation
发明人： Yoshinori Shirakawa , Koichiro Tanaka , Takenori Sakamoto
IPC分类号： H04L7/00 , H04L27/22 , H04L27/26 , H04L7/04
CPC分类号： H04L7/0041 , H04L7/0054 , H04L7/04 , H04L27/22 , H04L27/2657 , H04L27/2672 , H04L27/2675
摘要： In a phase error corrector, a signal extractor extracts received reference signals from received signals, and an error vector calculator calculates the error vectors of phase errors by comparing the extracted received reference signals with a known reference signal that is to be transmitted. A representative vector calculator divides, according to frequency, the error vectors into two or more groups and calculates representative vectors for the respective groups. A correction value calculator calculates, on the basis of the representative vectors, phase correction values for the respective frequencies. A phase corrector uses the calculated phase correction values to correct the phase errors for the respective frequencies.

2. 发明申请

US20160006557A1 RECEPTION APPARATUS, PHASE ERROR ESTIMATION METHOD, AND PHASE ERROR CORRECTION METHOD 有权
标题翻译：接收装置，相位误差估计方法和相位误差校正方法
公开(公告)号：US20160006557A1
公开(公告)日：2016-01-07
申请号：US14770406
申请日：2014-02-20
申请人： Panasonic Corporation
发明人： Yoshinori Shirakawa , Koichiro Tanaka , Takenori Sakamoto
IPC分类号： H04L7/00 , H04L7/04
CPC分类号： H04L7/0041 , H04L7/0054 , H04L7/04 , H04L27/22 , H04L27/2657 , H04L27/2672 , H04L27/2675
摘要： In a phase error corrector, a signal extractor extracts received reference signals from received signals, and an error vector calculator calculates the error vectors of phase errors by comparing the extracted received reference signals with a known reference signal that is to be transmitted. A representative vector calculator divides, according to frequency, the error vectors into two or more groups and calculates representative vectors for the respective groups. A correction value calculator calculates, on the basis of the representative vectors, phase correction values for the respective frequencies. A phase corrector uses the calculated phase correction values to correct the phase errors for the respective frequencies.
摘要翻译：在相位误差校正器中，信号提取器从接收信号中提取接收到的参考信号，误差向量计算器通过将提取的接收参考信号与要发送的已知参考信号进行比较来计算相位误差的误差向量。代表矢量计算器根据频率将误差矢量分成两组或更多组，并计算各组的代表矢量。校正值计算器基于代表矢量计算各个频率的相位校正值。相位校正器使用计算出的相位校正值来校正各个频率的相位误差。

3. 发明授权

US09112743B1 Equalization method and equalizer 有权
标题翻译：均衡方法和均衡器
公开(公告)号：US09112743B1
公开(公告)日：2015-08-18
申请号：US14620177
申请日：2015-02-11
申请人： Panasonic Corporation
发明人： Yoshinori Shirakawa , Naganori Shirakata , Koichiro Tanaka , Hiroyuki Motozuka
IPC分类号： H04L25/03 , H04L25/02 , H04B1/12 , H04L27/26
CPC分类号： H04L27/265 , H04B1/123 , H04L25/0204 , H04L25/022 , H04L25/0224 , H04L25/03159 , H04L25/03968
摘要： An equalization method includes carrying out frequency domain conversion of M received signals into a 2M received vector having 2M elements, carrying out channel estimation and noise/interference estimation based on the 2M vector, calculating a 2M channel vector and a (2M)×(2M) noise/interference matrix, selecting a 2M−1 or less channel vector from the calculated 2M channel vector, selecting a (2M−1)×(2M−1) or less noise/interference matrix from the calculated (2M)×(2M) noise/interference matrix, calculating a 2M−1 or less equalization coefficient vector as equalization coefficients based on the selected 2M−1 channel vector and the selected (2M−1)×(2M−1) noise/interference matrix, selecting a 2M−1 or less received vector from the 2M received vector, and equalizing the selected 2M−1 received vector by using the calculated. equalization coefficients.
摘要翻译：一种均衡方法包括：将M个接收信号的频域转换为具有2M个元素的2M接收向量，基于2M向量执行信道估计和噪声/干扰估计，计算2M信道向量和（2M）×（2M ）从所计算的2M信道向量中选择2M-1或更少的信道向量，从所计算的（2M）×（2M）的噪声/干扰矩阵中选择（2M-1）×（2M-1））噪声/干扰矩阵，基于所选择的2M-1信道向量和所选择的（2M-1）×（2M-1）个噪声/干扰矩阵，计算2M-1或更小的均衡系数向量作为均衡系数，选择2M -1或更小的接收向量，并且通过使用所计算的来均衡所选择的2M-1个接收向量。均衡系数。

4. 发明授权

US09491030B2 Phase rotation correcting method and phase rotation correcting apparatus 有权
标题翻译：相位旋转校正方法和相位旋转校正装置
公开(公告)号：US09491030B2
公开(公告)日：2016-11-08
申请号：US14607333
申请日：2015-01-28
申请人： Panasonic Corporation
发明人： Hiroyuki Yoshikawa , Yoshinori Shirakawa , Takenori Sakamoto , Koichiro Tanaka
IPC分类号： H04B1/16 , H04L27/38 , H04L27/34
CPC分类号： H04L27/3863 , H04L27/3488
摘要： A phase rotation correcting method includes receiving a signal modulated by a multi-value modulation method; recognizing a position of a symbol point of the received signal on an IQ plane; performing phase rotation for rotating a phase of the symbol point of the received signal toward an I axis or a Q axis in accordance with the recognized position and calculating, as an amount of phase rotation correction, a value on an axis different from the axis toward which the phase of the symbol point has been rotated by the phase rotation; and correcting phase rotation of the symbol point by using the calculated amount of phase rotation correction.
摘要翻译：相位旋转校正方法包括：接收由多值调制方式调制的信号; 识别接收信号的符号点在IQ平面上的位置; 执行相位旋转，以根据识别的位置将接收信号的符号点的相位朝向I轴或Q轴旋转，并且将相对于旋转校正的轴计算为不同于轴的轴上的值符号点的相位已被相位旋转旋转; 以及通过使用所计算的相位旋转校正量校正符号点的相位旋转。

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