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    • 5. 发明授权
    • Channel estimation in a multi-user MIMO-OFDM system in the presence of user terminal symbol-specific phase offsets
    • 在存在用户终端符号特定相位偏移的情况下在多用户MIMO-OFDM系统中的信道估计
    • US08687722B2
    • 2014-04-01
    • US13516130
    • 2011-09-01
    • Hajime SuzukiJoseph Abraham PathikulangaraDavid Humphrey
    • Hajime SuzukiJoseph Abraham PathikulangaraDavid Humphrey
    • H04K1/10
    • H04L25/022H04L5/005H04L25/0204H04L25/0228
    • An OFDM wireless communication system with an access point and a plurality of remote user terminals estimates an uplink channel. The access point receives training symbols transmitted by the user terminals. Each training symbol includes pilot symbols associated with phase offset estimation OFDM sub-carriers. The phase offset estimation sub-carriers include subsets of sub-carriers associated with each respective user terminals. Each subset is used exclusively by the associated user terminal during channel estimation. The channel estimation sub-carriers are used by all user terminals. For each terminal the access point estimates symbol-specific phase offsets specific to the user terminal using the received pilot symbols associated with the user specific subset of the phase offset estimation sub-carriers. The access point also estimates the uplink channel using the user-terminal-symbol-specific phase offset estimates and the received symbols.
    • 具有接入点和多个远程用户终端的OFDM无线通信系统估计上行链路信道。 接入点接收用户终端发送的训练符号。 每个训练符号包括与相位偏移估计OFDM子载波相关联的导频符号。 相位偏移估计子载波包括与每个相应用户终端相关联的子载波子集。 每个子集在信道估计期间由相关联的用户终端专门使用。 信道估计子载波由所有用户终端使用。 对于每个终端,接入点使用与相位偏移估计子载波的用户特定子集相关联的接收到的导频符号来估计特定于用户终端的特定于符号的相位偏移。 接入点还使用用户终端符号特定的相位偏移估计和接收到的符号来估计上行链路信道。
    • 7. 发明授权
    • Force-feedback multidirectional input device
    • 力反馈多向输入装置
    • US08586885B2
    • 2013-11-19
    • US13247464
    • 2011-09-28
    • Shinji IshikawaHajime Suzuki
    • Shinji IshikawaHajime Suzuki
    • H01H25/00
    • G05G5/03G05G1/02G06F3/016G06F3/0362H01H25/002H01H2003/008H01H2025/004H01H2025/043
    • A force-feedback multidirectional input device includes a slider slidably supported by a support base and an operation knob joined to the slider. In a sliding operation, the slider operates in conjunction with actuating members included in a force-feedback unit. Therefore, a sense of force based on the sliding is fed back to the operation knob. Furthermore, the slider is elastically urged by coil springs toward an inner bottom surface of a housing space defined in the support base. In a depressing operation, the operation knob presses the support base downward against the urging force of coil springs. Therefore, a vertically movable member joined to the support base is moved downward along guide portions (convex rails and concave grooves). Thus, a push switch provided on a pedestal (circuit board) is pressed and activated by the vertically movable member.
    • 力反馈多向输入装置包括由支撑基座可滑动地支撑的滑块和连接到滑块的操作旋钮。 在滑动操作中,滑块与包括在力 - 反馈单元中的致动构件一起操作。 因此,基于滑动的力的感觉被反馈到操作旋钮。 此外,滑块被螺旋弹簧弹性地推向限定在支撑基座中的壳体空间的内底表面。 在按压操作中,操作旋钮克服螺旋弹簧的推力向下按压支撑底座。 因此,与支撑基座接合的可升降构件沿着引导部(凸轨和凹槽)向下移动。 因此,设置在基座(电路板)上的按钮开关被可垂直移动的构件按压并启动。
    • 8. 发明申请
    • Channel Estimation In A Multi-User MIMO-OFDM System In The Presence Of User Terminal Symbol-Specific Phase Offsets
    • 用户终端符号特定相位偏移存在的多用户MIMO-OFDM系统中的信道估计
    • US20120314751A1
    • 2012-12-13
    • US13516130
    • 2011-09-01
    • Hajime SuzukiJoseph Abraham PathikulangaraDavid Humphrey
    • Hajime SuzukiJoseph Abraham PathikulangaraDavid Humphrey
    • H04L27/28H04W88/08
    • H04L25/022H04L5/005H04L25/0204H04L25/0228
    • Disclosed is an OFDM wireless communication system comprising an access point, and a plurality of remote user terminals. The access point receives one or more training symbols transmitted by the user terminals, each training symbol comprising pilot symbols associated with phase offset estimation OFDM sub-carriers of said training symbol, the phase offset estimation sub-carriers comprising subsets of sub-carriers associated with respective user terminals, wherein each subset is used exclusively by the associated user terminal during channel estimation, and further symbols associated with channel estimation OFDM sub-carriers of said training symbol, wherein the channel estimation sub-carriers are used by all user terminals. The access point estimates, for each user terminal, symbol-specific phase offsets specific to the user terminal using the received pilot symbols associated with the user specific subset of the phase offset estimation sub-carriers; and estimates the uplink channel using the user-terminal-symbol-specific phase offset estimates and the received further symbols.
    • 公开了一种包括接入点和多个远程用户终端的OFDM无线通信系统。 接入点接收由用户终端发送的一个或多个训练符号,每个训练符号包括与所述训练符号的相位偏移估计OFDM子载波相关联的导频符号,所述相位偏移估计子载波包括与 相应的用户终端,其中每个子集在信道估计期间由相关联的用户终端专门使用,以及与所述训练符号的信道估计OFDM子载波相关联的其他符号,其中,所有用户终端使用信道估计子载波。 接入点针对每个用户终端,使用与相位偏移估计子载波的用户特定子集相关联的接收到的导频符号来估计特定于用户终端的符号特定相位偏移; 并且使用用户终端符号特定的相位偏移估计和所接收的另外的符号来估计上行链路信道。
    • 9. 发明申请
    • FUEL INJECTION VALVE DEVICE
    • 燃油喷射阀装置
    • US20100282871A1
    • 2010-11-11
    • US12811412
    • 2009-01-28
    • Hiroshi YoshizumiHajime SuzukiMasataka Ota
    • Hiroshi YoshizumiHajime SuzukiMasataka Ota
    • F02M61/10F02M61/18
    • F02M61/14F02M57/06
    • A fuel injection valve can be provided, with which temperature at needle valve seating position can be decreased and carburization of fuel and deposition of the carbide near the needle valve seating position can be prevented resulting in stable normal fuel injection control, and which is applicable to small and middle and also to large engines, particularly gas engines. The fuel injection valve is composed such that distance (A) from a seating face of the nozzle in the nozzle supporting body to a seating position of the needle valve in the nozzle is determined to be smaller than distance (B) from the nozzle seating face in the nozzle supporting body to the lower end of clearance between a nozzle insertion hole of the nozzle supporting body and a fitting part of the nozzle inserted into the nozzle insertion hole, thereby suppressing heat flow to the needle valve seating position.
    • 可以设置燃料喷射阀,可以防止针阀安置位置处的温度,并且可以防止燃料渗碳和碳化氢在针阀座位置附近沉积,从而实现稳定的正常燃油喷射控制,并且适用于 小型和中型,还有大型发动机,特别是燃气发动机。 燃料喷射阀被构成为使得从喷嘴支撑体中的喷嘴的座面到喷嘴中的针阀的就座位置的距离(A)被确定为小于从喷嘴座面 在喷嘴支撑体中,喷嘴支撑体的喷嘴插入孔和插入喷嘴插入孔的喷嘴的嵌合部之间的间隙的下端,从而抑制到针阀的就座位置的热流。