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1. 发明公开

EP2541817A1 SIGNAL PROCESSING CIRCUIT AND COMMUNICATION DEVICE CONTAINING SAID CIRCUIT 审中-公开
标题翻译： SIG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG
公开(公告)号：EP2541817A1
公开(公告)日：2013-01-02
申请号：EP10846618.6
申请日：2010-11-19
申请人： Sumitomo Electric Industries, Ltd.
发明人： MAEHATA, Takashi , ILLARIONOV, Mikhail
IPC分类号： H04J11/00
CPC分类号： H04J11/0023 , H04B1/707 , H04B2201/70706 , H04L27/2624
摘要： An object of the present invention is to appropriately limit an amplitude of an IQ baseband signal having different average powers for respective frequency bands B1 and B2, without degrading an SNR.
The present invention relates to a signal processing circuit 9 for reducing a PAPR of a modulated wave signal to be inputted to a power amplification circuit 5. The signal processing circuit 9 includes a power calculation section 13 that calculates an instantaneous power P of an IQ baseband signal of the modulated wave signal, and a signal processing section 17 that limits an amplitude of the IQ baseband signal by performing a clipping process or the like, by using cancellation signals Ic and Qc capable of canceling the IQ baseband signal in accordance with average powers of the respective frequency bands B1 and B2, such that an upper limit of an instantaneous power P becomes equivalent to a predetermined threshold Pth.
摘要翻译：本发明的目的是适当地限制具有针对各个频带B1和B2的平均功率不同的IQ基带信号的幅度，而不降低SNR。本发明涉及用于减少输入到功率放大电路5的调制波信号的PAPR的信号处理电路9.信号处理电路9包括：功率计算部13，计算IQ基带的瞬时功率P 信号处理部17，其通过使用能够根据平均功率消除IQ基带信号的消除信号Ic和Qc，通过执行限幅处理等来限制IQ基带信号的幅度使得瞬时功率P的上限等于预定阈值Pth。

2. 发明公开

EP1115221A1 VEHICLE-TO-ROADSIDE COMMUNICATION SYSTEM, ROADSIDE COMMUNICATION STATION, AND ON-BOARD MOBILE STATION 有权
标题翻译：移动通信系统的KOMMUNIKATIONSSYSTEM FAHRZEUG ZU STRASSENRAND，KOMMUNIKATIONSSTATION AM STRASSENRAND
公开(公告)号：EP1115221A1
公开(公告)日：2001-07-11
申请号：EP00939136.8
申请日：2000-06-22
申请人： Sumitomo Electric Industries, Ltd.
发明人： MAEHATA, Takashi
IPC分类号： H04J11/00 , H04B7/26 , G08G1/09
CPC分类号： H04L1/0001 , H04L27/2602 , H04W56/0035
摘要： The present invention realizes a communication system between a road and a vehicle which performs communication between a road communication station and a vehicle-mounted mobile station in a cell, utilizing an OFDM modulation method, in which interference between carriers does not occur even when a vehicle runs at high speed and Doppler shift increases, which prevents occurrence of the degradation in communication quality. After detecting the velocity of a vehicle in the cell, the space between frequencies of subcarriers of OFDM is increased as the detected velocity of the vehicle becomes higher. Assuming that an occupied bandwidth of frequency assigned according to the Radio Law is fixed in a radio wave, the number of subcarriers within the occupied bandwidth of frequency is reduced (thinned out). Even when the vehicle runs at high speed, the interference between carriers does not occur, thereby allowing high-quality data communication. Moreover, since the number of vehicles present in the cell is small, a drop in the data transmission rate due to a phenomenon related to the number of subcarriers can be coped with by the present invention.
摘要翻译：本发明利用OFDM调制方式实现道路与车辆之间的道路通信站与车载移动台之间的通信的通信系统，即使在车辆之间也不会发生载波之间的干扰高速运行，多普勒频移增加，防止通信质量下降。在检测到小区中的车辆的速度之后，随着车辆的检测速度变高，OFDM的副载波频率之间的空间增加。假设根据无线电法分配的频率的占用带宽固定在无线电波中，频率占用带宽内的子载波数减少（稀疏）。即使车辆高速行驶，也不会发生载波之间的干扰，能够进行高质量的数据通信。此外，由于存在于小区中的车辆的数量少，所以通过本发明可以应付由与子载波数相关的现象引起的数据传输速率的下降。

3. 发明公开

EP2963827A1 DELTA SIGMA MODULATOR AND COMMUNICATION DEVICE 有权
标题翻译：三角洲调制解调员驻莫桑比克大使馆
公开(公告)号：EP2963827A1
公开(公告)日：2016-01-06
申请号：EP14757208.5
申请日：2014-02-27
申请人： Sumitomo Electric Industries, Ltd.
发明人： MAEHATA, Takashi
IPC分类号： H03M3/02
CPC分类号： H03M3/422 , H03M3/32 , H03M3/396 , H03M3/402 , H03M3/43
摘要： A delta-sigma modulator capable of outputting an output signal including a plurality of signals having different frequencies. The delta-sigma modulator includes: a plurality of input ports to which a plurality of input signals having different frequencies are inputted, respectively; a plurality of loop filters provided corresponding to the plurality of input ports, respectively; an adder configured to add outputs of the plurality of loop filters; and a quantizer configured to quantize an output of the adder. The plurality of loop filters each receive the input signal inputted to the corresponding input port and a feedback signal of an output of the quantizer. The plurality of loop filters each have a characteristic of stopping noise in the vicinity of a frequency of the input signal inputted to the corresponding input port.
摘要翻译：能够输出包括具有不同频率的多个信号的输出信号的Δ-Σ调制器。 Δ-Σ调制器包括：分别输入多个具有不同频率的输入信号的多个输入端口; 分别与所述多个输入端口对应地设置的多个环路滤波器; 加法器，被配置为添加所述多个环路滤波器的输出; 以及量化器，被配置为量化加法器的输出。多个环路滤波器各自接收输入到相应输入端口的输入信号和量化器的输出的反馈信号。多个环路滤波器各自具有在输入到相应的输入端口的输入信号的频率附近停止噪声的特性。

4. 发明授权

EP2963827B1 DELTA SIGMA MODULATOR AND COMMUNICATION DEVICE 有权
标题翻译： DELTA SIGMA调制器和通信设备
公开(公告)号：EP2963827B1
公开(公告)日：2018-05-09
申请号：EP14757208.5
申请日：2014-02-27
申请人： Sumitomo Electric Industries, Ltd.
发明人： MAEHATA, Takashi
IPC分类号： H03M3/02 , H03M3/00
CPC分类号： H03M3/422 , H03M3/32 , H03M3/396 , H03M3/402 , H03M3/43
摘要： A delta-sigma modulator capable of outputting an output signal including a plurality of signals having different frequencies. The delta-sigma modulator includes: a plurality of input ports to which a plurality of input signals having different frequencies are inputted, respectively; a plurality of loop filters provided corresponding to the plurality of input ports, respectively; an adder configured to add outputs of the plurality of loop filters; and a quantizer configured to quantize an output of the adder. The plurality of loop filters each receive the input signal inputted to the corresponding input port and a feedback signal of an output of the quantizer. The plurality of loop filters each have a characteristic of stopping noise in the vicinity of a frequency of the input signal inputted to the corresponding input port.

5. 发明公开

EP2541816A1 PEAK POWER SUPPRESSION CIRCUIT, AND COMMUNICATION DEVICE PROVIDED WITH SAID CIRCUIT 审中-公开
标题翻译：麻省理工学院金属学家EERER DERARTIGEN SCHALTUNG AUSGESTATTETE KOMMUNIKATIONSVORRICHTUNG
公开(公告)号：EP2541816A1
公开(公告)日：2013-01-02
申请号：EP10846614.5
申请日：2010-11-15
申请人： Sumitomo Electric Industries, Ltd.
发明人： MAEHATA, Takashi , ILLARIONOV, Mikhail
IPC分类号： H04J11/00
CPC分类号： H04L27/2624 , H04B2201/70706
摘要： An object of the present invention is to provide a peak power suppressing circuit 9 that can suppress a peak power of an IQ baseband signal more assuredly.
The present invention relates to the peak power suppressing circuit 9 that performs a clipping process on an IQ baseband signal. The suppressing circuit 9 includes a power calculation section 13 that calculates an instantaneous power P of an IQ baseband signal, a pulse retention section 22 that retains a cancellation pulse S that has a frequency component in a frequency band B of the IQ baseband signal and a frequency component outside the frequency band, and a clipping processing section 17 that subtracts, from an IQ baseband signal whose instantaneous power P that has been calculated is greater than a predetermined threshold Pth, cancellation signals Ic and Qc obtained by multiplying increments ΔI and ΔQ of the IQ baseband signal from the threshold Pth by the cancellation pulse S.
摘要翻译：本发明的目的是提供一种能够更可靠地抑制IQ基带信号的峰值功率的峰值功率抑制电路9。本发明涉及对IQ基带信号进行限幅处理的峰值功率抑制电路9。抑制电路9包括计算IQ基带信号的瞬时功率P的功率计算部13，保持具有IQ基带信号的频带B的频率成分的抵消脉冲S的脉冲保持部22，以及以及削波处理部17，其从已经计算的瞬时功率P的IQ基带信号中减去大于预定阈值Pth的消除信号Ic和Qc，通过将增量“I”和“ 来自阈值Pth的IQ基带信号的Q为消除脉冲S.

6. 发明授权

EP1115221B1 VEHICLE-TO-ROADSIDE COMMUNICATION SYSTEM, ROADSIDE COMMUNICATION STATION, AND ON-BOARD MOBILE STATION 有权
标题翻译：通信系统车辆路边，通信站路边和移动站牌
公开(公告)号：EP1115221B1
公开(公告)日：2007-09-26
申请号：EP00939136.8
申请日：2000-06-22
申请人： Sumitomo Electric Industries, Ltd.
发明人： MAEHATA, Takashi
IPC分类号： H04J11/00 , H04B7/26 , G08G1/09
CPC分类号： H04L1/0001 , H04L27/2602 , H04W56/0035
摘要： The present invention realizes a communication system between a road and a vehicle which performs communication between a road communication station and a vehicle-mounted mobile station in a cell, utilizing an OFDM modulation method, in which interference between carriers does not occur even when a vehicle runs at high speed and Doppler shift increases, which prevents occurrence of the degradation in communication quality. After detecting the velocity of a vehicle in the cell, the space between frequencies of subcarriers of OFDM is increased as the detected velocity of the vehicle becomes higher. Assuming that an occupied bandwidth of frequency assigned according to the Radio Law is fixed in a radio wave, the number of subcarriers within the occupied bandwidth of frequency is reduced (thinned out). Even when the vehicle runs at high speed, the interference between carriers does not occur, thereby allowing high-quality data communication. Moreover, since the number of vehicles present in the cell is small, a drop in the data transmission rate due to a phenomenon related to the number of subcarriers can be coped with by the present invention.

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