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1. 发明授权

US11586856B2 Object recognition device, object recognition method, and object recognition program 有权
公开(公告)号：US11586856B2
公开(公告)日：2023-02-21
申请号：US17287182
申请日：2019-09-13
申请人： NEC Corporation
发明人： Yasunori Futatsugi , Yoshihiro Mishima , Atsushi Fukuzato , Jun Nakayamada , Kenji Sobata
IPC分类号： G06K9/62 , G06V20/58 , G01S7/41 , G01S13/931 , G06V10/774 , G01S17/931 , G06V10/778 , G06N20/20 , G06N3/04
摘要： An object recognition device 80 includes a scene determination unit 81, a learning-model selection unit 82, and an object recognition unit 83. The scene determination unit 81 determines, based on information obtained during driving of a vehicle, a scene of the vehicle. The learning-model selection unit 82 selects, in accordance with the determined scene, a learning model to be used for object recognition from two or more learning models. The object recognition unit 83 recognizes, using the selected learning model, an object in an image to be photographed during driving of the vehicle.

2. 发明授权

US09906389B2 Receiver, receiving method, and non-transitory computer readable medium 有权
公开(公告)号：US09906389B2
公开(公告)日：2018-02-27
申请号：US15321624
申请日：2015-02-24
申请人： NEC Corporation
发明人： Yasunori Futatsugi , Naoto Ishii
IPC分类号： H04L27/26 , H04B1/16 , H04L5/00
CPC分类号： H04L27/2607 , H04B1/16 , H04L5/0007 , H04L25/0307 , H04L27/2665 , H04L27/2666
摘要： The object of the present invention is to reduce the number of complex multiplications in an ICI reduction processing and to reduce the influence of characteristic degradation due to a quantization bit limitation of a digital signal processing. A receiver includes an extended CP addition unit (102) that receives radio signals through a plurality of paths and compensates for a symbol lost within a Fourier transform window to received signals received through the plurality of paths; and FFTs (104-1 and 104-2) each of which performs, in a range of the Fourier transform window, Fourier transform on the received signal with a lost symbol added.

3. 发明申请

US20140335812A1 RADIO RECEPTION DEVICE AND RADIO RECEPTION METHOD IN RADIO COMMUNICATION SYSTEM 有权
标题翻译：无线电通信系统中的无线接收设备和无线接收方法
公开(公告)号：US20140335812A1
公开(公告)日：2014-11-13
申请号：US14361415
申请日：2012-11-08
申请人： NEC CORPORATION
发明人： Yasunori Futatsugi
IPC分类号： H04B1/10 , H04L25/02
CPC分类号： H04B1/1027 , H04J11/0023 , H04L25/0202 , H04W16/14
摘要： A radio reception device and a radio receiving method are provided that, when a frequency band assigned to a different radio system is shared, can effectively suppress the influence of interfering waves from this different radio system. A radio reception device is one in a second radio system (11) that can use a frequency band assigned to a first radio system (10), and includes: a desired wave channel estimation section (110) that generates, based on reception signals, first channel estimate values (Es) of interfering wave components arriving from the first radio system, which uses a different communication scheme from that of the second radio system; an interfering wave channel estimation section (120) that generates, based on the reception signals, second channel estimate values (Ei) of desired wave components received through the communication scheme of the second radio system; and an equalization section (105) that suppresses the interfering wave components by using the first and second channel estimate values.
摘要翻译：提供一种无线电接收装置和无线电接收方法，当分配给不同的无线电系统的频带被共享时，可以有效地抑制来自该不同无线电系统的干扰波的影响。无线接收装置是可以使用分配给第一无线电系统（10）的频带的第二无线电系统（11）中的一个，并且包括：根据接收信号生成的期望波信道估计部（110）从第一无线电系统到达的干扰波分量的第一信道估计值（Es），其使用与第二无线电系统不同的通信方案; 基于所述接收信号生成通过所述第二无线电系统的通信方案接收到的期望波分量的第二信道估计值（Ei）的干扰波信道估计部分（120）以及通过使用第一和第二信道估计值来抑制干扰波分量的均衡部分（105）。

4. 发明授权

US11139896B2 Signal processing device and signal processing method 有权
公开(公告)号：US11139896B2
公开(公告)日：2021-10-05
申请号：US16498138
申请日：2018-03-22
申请人： NEC CORPORATION
发明人： Manabu Arikawa , Yasunori Futatsugi , Toshiharu Ito
IPC分类号： H04B10/06 , H04B10/61 , H04B7/08
摘要： A signal processing device combines a plurality of received signals, and includes: a phase reference signal selection means for selecting a signal serving as a phase reference from among the plurality of received signals on the basis of the quality of the plurality of received signals; a relative phase calculation means for obtaining information about the relative phases of the plurality of received signals before the combining; a phase compensation means for performing relative phase compensation on each of the plurality of received signals on the basis of the relative phases; and a phase correction means for calculating a phase correction amount based on the relative phase information and performing phase correction on the received signals, wherein when switching occurs in the selected phase reference signal, the phase correction amount is changed by as much as the relative phase difference between the phase reference signals before and after the switching.

5. 发明授权

US10686637B2 Receiving apparatus and receiving method 有权
公开(公告)号：US10686637B2
公开(公告)日：2020-06-16
申请号：US15550107
申请日：2016-02-15
申请人： NEC Corporation
发明人： Yasunori Futatsugi , Naoto Ishii
IPC分类号： H04L27/26 , H04B17/336 , H04J11/00
摘要： The present invention improves reception characteristics of a receiving apparatus based on OFDM. The receiving apparatus includes: a window timing selection unit that determines Fourier transform window start and end timings for a received signal(s) based on OFDM, based on a signal-to-interference power ratio and signal power in a Fourier transform window; and a Fourier transform unit that performs Fourier transform on the received signal(s) in accordance with the Fourier transform window start and end timings outputted by the window timing selection unit.

6. 发明授权

US11277758B2 Communication apparatus and communication method 有权
公开(公告)号：US11277758B2
公开(公告)日：2022-03-15
申请号：US16483083
申请日：2018-02-14
申请人： NEC Corporation
发明人： Yasunori Futatsugi , Toshiharu Ito , Manabu Arikawa
IPC分类号： H04W24/02 , H04L1/08 , H04L12/26 , H04W40/12 , H04L43/0888
摘要： It is difficult in related communication apparatuses to avoid degradation of communication quality due to fading and achieve sufficient throughput performance; therefore, a communication apparatus according to an exemplary aspect of the present invention includes fade avoidance rate calculation means for calculating, from a time variation in communication quality information and a transmission pattern in transmitting a communication packet repeatedly, a fade avoidance rate of a probability that the communication packet lies outside a fade duration, with respect to each transmission pattern; throughput calculation means for calculating, from the transmission pattern and the fade avoidance rate, a throughput of the communication packet with respect to each transmission pattern; and transmission pattern determination means for determining an optimum transmission pattern, of the transmission pattern, by which the throughput is maximized.

7. 发明授权

US09407299B2 Radio reception device and radio reception method in radio communication system 有权
标题翻译：无线电通信系统中的无线接收装置和无线接收方法
公开(公告)号：US09407299B2
公开(公告)日：2016-08-02
申请号：US14361415
申请日：2012-11-08
申请人： NEC Corporation
发明人： Yasunori Futatsugi
IPC分类号： H04B1/10 , H04J11/00 , H04L25/02 , H04W16/14
CPC分类号： H04B1/1027 , H04J11/0023 , H04L25/0202 , H04W16/14
摘要： A radio reception device and a radio receiving method are provided that, when a frequency band assigned to a different radio system is shared, can effectively suppress the influence of interfering waves from this different radio system. A radio reception device is one in a second radio system (11) that can use a frequency band assigned to a first radio system (10), and includes: a desired wave channel estimation section (110) that generates, based on reception signals, first channel estimate values (Es) of interfering wave components arriving from the first radio system, which uses a different communication scheme from that of the second radio system; an interfering wave channel estimation section (120) that generates, based on the reception signals, second channel estimate values (Ei) of desired wave components received through the communication scheme of the second radio system; and an equalization section (105) that suppresses the interfering wave components by using the first and second channel estimate values.
摘要翻译：提供一种无线电接收装置和无线电接收方法，当分配给不同的无线电系统的频带被共享时，可以有效地抑制来自该不同无线电系统的干扰波的影响。无线接收装置是可以使用分配给第一无线电系统（10）的频带的第二无线电系统（11）中的一个，并且包括：根据接收信号生成的期望波信道估计部（110）从第一无线电系统到达的干扰波分量的第一信道估计值（Es），其使用与第二无线电系统不同的通信方案; 基于所述接收信号生成通过所述第二无线电系统的通信方案接收到的期望波分量的第二信道估计值（Ei）的干扰波信道估计部分（120）以及通过使用第一和第二信道估计值来抑制干扰波分量的均衡部分（105）。

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