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1. 发明申请

US20060198472A1 Transmission system, transmitter device, and receiver device 审中-公开
标题翻译：传输系统，发射机设备和接收机设备
公开(公告)号：US20060198472A1
公开(公告)日：2006-09-07
申请号：US11196817
申请日：2005-08-03
申请人： Michiharu Nakamura , Kohji Takeo
发明人： Michiharu Nakamura , Kohji Takeo
IPC分类号： H04L27/06
CPC分类号： H04L27/2676 , H04L25/0224 , H04L25/03159 , H04L27/2605 , H04L27/2607 , H04L27/2626 , H04L27/2662 , H04L27/2688
摘要： A transmission system which is simple in construction and yet can effectively avoid inter-symbol interference. A transmitter device transmits a signal block while repeating the same signal block twice consecutively. A receiver device receives the signal blocks, performs Fourier transform operation on the two identical signal blocks at respective predetermined timings, matches the phases of the two signal blocks with each other by waveform equalization in frequency domain, combines the signal blocks, and demodulates the combined signal block. With the transmission system, various propagation path conditions, in particular, changes in delay time can be flexibly coped with by just appropriately setting the Fourier transform operation timing, whereby inter-symbol interference can be avoided more effectively than in the case of using fixed-length GI.
摘要翻译：一种传输系统，结构简单，可有效避免符号间干扰。发射机设备在连续两次重复相同的信号块的同时传输信号块。接收机装置接收信号块，在相应的预定定时对两个相同的信号块进行傅里叶变换操作，通过频域中的波形均衡将两个信号块的相位彼此匹配，组合信号块，并对组合信号块。利用传输系统，通过恰当地设置傅里叶变换操作定时，可以灵活地应对各种传播路径条件，特别是延迟时间的变化，从而与使用固定频率的情况相比，可以更有效地避免符号间干扰，长度GI。

2. 发明授权

US07787824B2 Receiver, transmission device and receiving method 有权
标题翻译：接收机，传输设备和接收方式
公开(公告)号：US07787824B2
公开(公告)日：2010-08-31
申请号：US11698050
申请日：2007-01-26
申请人： Wladimir Bocquet , Michiharu Nakamura
发明人： Wladimir Bocquet , Michiharu Nakamura
IPC分类号： H04B7/00 , H04K3/00
CPC分类号： H04B7/086 , H04B7/0413
摘要： An adaptive array antenna part receiving a plurality of transmitted signals in which sub-carrier signal components of predetermined values is suppressed before transmission in order to distinguish a plurality of transmission antenna, by means of the plurality of transmission antennas; a part calculating weight factors suppressing the sub-carrier signal components set in the predetermined values, among sub-carrier components included in a received signal; and a part applying the weight factors to the adaptive array antenna means and receiving the plurality of transmitted signals with distinguishing the same are provided.
摘要翻译：一种自适应阵列天线部分，其接收多个发射信号，其中在传输之前抑制了预定值的副载波信号分量，以便通过所述多个发射天线来区分多个发射天线; 在包括在接收信号中的子载波分量中，计算抑制在预定值中设置的副载波信号分量的权重因子的部分; 并且提供将权重因子应用于自适应阵列天线装置并且接收多个具有区别的发射信号的部分。

3. 发明申请

US20100142436A1 Communication Systems 审中-公开
标题翻译：通讯系统
公开(公告)号：US20100142436A1
公开(公告)日：2010-06-10
申请号：US12649096
申请日：2009-12-29
申请人： Michael John Beems Hart , Yuefeng Zhou , Dorin Viorel , Chenxi Zhu , Michiharu Nakamura , Masahiro Watanabe , Hiroshi Fujita , Makoto Yoshida
发明人： Michael John Beems Hart , Yuefeng Zhou , Dorin Viorel , Chenxi Zhu , Michiharu Nakamura , Masahiro Watanabe , Hiroshi Fujita , Makoto Yoshida
IPC分类号： H04B7/14
CPC分类号： H04W28/16 , H04B7/15507 , H04B7/2606 , H04L5/0007 , H04L5/0032 , H04L5/0048 , H04L25/0226 , H04L27/2655 , H04L27/2692 , H04W48/08 , H04W84/047
摘要： A transmission method for use in a multi-hop wireless communication system is provided. The system includes a source apparatus, a destination apparatus and one or more intermediate apparatuses. The system has access to at least one predetermined transmission introduction sequence and also has access to a time-frequency format for use in assigning available transmission frequency bandwidth during a discrete transmission interval, said format defining a plurality of transmission windows within such an interval. Each window occupies a different part of that interval and has a frequency bandwidth profile within said available transmission frequency bandwidth over its part of that interval. Each said window being assignable for such a transmission interval to at least one of said apparatuses for use in transmission. The method includes, when transmitting a message with a preamble in a particular transmission interval, transmitting the preamble in a first transmission window of that transmission interval. Furthermore, the method includes transmitting the transmission introduction sequence in a second transmission window of that transmission interval other than the first transmission window preferably as control information for use by at least one said intermediate apparatus or the destination apparatus.
摘要翻译：提供了一种用于多跳无线通信系统的传输方法。该系统包括源设备，目的地设备和一个或多个中间设备。该系统可以访问至少一个预定的传输介绍序列，并且还可以访问用于在离散传输间隔期间分配可用传输频率带宽的时间 - 频率格式，所述格式在这样的间隔内定义多个传输窗口。每个窗口占据该间隔的不同部分，并且在该间隔的部分内在所述可用传输频率带宽内具有频带配置。每个所述窗口可分配给用于传输的所述设备中的至少一个的这种传输间隔。该方法包括：在特定发送间隔中发送具有前导码的消息时，在该发送间隔的第一发送窗口中发送前导码。此外，该方法包括：在第一传输窗口之外的传输间隔的第二传输窗口中优选地传输传输介绍序列作为至少一个所述中间设备或目的设备使用的控制信息。

4. 发明授权

US07660370B2 Wireless terminal apparatus, control method for wireless base station and control method for wireless terminal apparatus 失效
标题翻译：无线终端装置，无线基站的控制方法及无线终端装置的控制方法
公开(公告)号：US07660370B2
公开(公告)日：2010-02-09
申请号：US11475960
申请日：2006-06-28
申请人： Atsushi Honda , Yuuta Nakaya , Michiharu Nakamura
发明人： Atsushi Honda , Yuuta Nakaya , Michiharu Nakamura
IPC分类号： H04L27/06
CPC分类号： H04L27/265 , H04L27/2633
摘要： The present invention provides a wireless terminal apparatus, including a reception unit for receiving a multi-carrier signal generated by applying an N-point (where N is a natural number) inverse fast Fourier transform (IFFT) to a plurality of sub-carriers to which transmission information for a plurality of wireless terminal apparatuses is allocated; a fast Fourier transform unit for extracting a plurality of the sub-carriers from the multi-carrier signal; a thin-out unit, being placed at the front stage of the fast Fourier transform unit, capable of changing, from the N points, a sampling number of the multi-carrier signals which are digitalized; and a judgment unit for discerning, based on sub-carrier allocation information accompanying the multi-carrier signal, whether or not the sub-carrier of another wireless terminal apparatus overlaps with that of the wireless terminal apparatus itself in the case of changing the sampling number from the N points, and determining a sampling number for the thin-out unit.
摘要翻译：本发明提供一种无线终端装置，包括：接收单元，用于接收通过向多个子载波应用N点（其中N为自然数）的快速傅里叶逆变换（IFFT）而生成的多载波信号，分配用于多个无线终端装置的发送信息; 快速傅立叶变换单元，用于从多载波信号中提取多个子载波; 放置在快速傅里叶变换单元的前级的薄型单元，能够从N点改变数字化的多载波信号的采样数; 以及判断单元，用于基于伴随多载波信号的子载波分配信息，在改变采样数的情况下，确定另一无线终端装置的副载波与无线终端装置本身的副载波是否重叠从N个点，并确定薄化单元的采样数。

5. 发明申请

US20080259904A1 APPARATUS AND METHOD OF FRAME SYNCHRONIZATION IN BROAD BAND WIRELESS COMMUNICATION SYSTEMS 有权
标题翻译：宽带无线通信系统中帧同步的装置与方法
公开(公告)号：US20080259904A1
公开(公告)日：2008-10-23
申请号：US12044122
申请日：2008-03-07
申请人： Xin Wang , Yuuta Nakaya , Syuusaku Suzuki , Michiharu Nakamura , JianMin Zhou , Hiroyuki Hayashi
发明人： Xin Wang , Yuuta Nakaya , Syuusaku Suzuki , Michiharu Nakamura , JianMin Zhou , Hiroyuki Hayashi
IPC分类号： H04J3/06
CPC分类号： H04L27/2656 , H04L27/2676
摘要： The present invention relates to an apparatus and method of frame synchronization in broad band wireless communication systems. In an apparatus of frame synchronization in a mobile station, a time variant phase rotation compensator eliminates time variant phase rotation carried in received signals by conjugated multiplication between adjacent signal samples. Then, the processed signal is fed into a delay correlator to calculate a plurality of correlations between two successive frames. A local power calculator acquires an average power of several symbols centered on delayed correlation values. A normalizer normalizes the delayed correlation values with a local average power corresponding to the delayed correlation values. A maximum value detector selects the maximum value from normalized correlation values to trigger frame synchronizing and timing signals.
摘要翻译：本发明涉及宽带无线通信系统中帧同步的装置和方法。在移动台中的帧同步装置中，时变相位旋转补偿器通过相邻信号样本之间的共轭乘法来消除接收信号中携带的时变相位旋转。然后，将经处理的信号馈送到延迟相关器中以计算两个连续帧之间的多个相关性。局部功率计算器以延迟相关值为中心获取几个符号的平均功率。归一化器用对应于延迟相关值的局部平均功率来对延迟的相关值进行归一化。最大值检测器从归一化相关值中选择最大值以触发帧同步和定时信号。

6. 发明申请

US20070189212A1 Adaptive modulation and coding 失效
标题翻译：自适应调制和编码
公开(公告)号：US20070189212A1
公开(公告)日：2007-08-16
申请号：US11783159
申请日：2007-04-06
申请人： Yassin Awad , Michiharu Nakamura
发明人： Yassin Awad , Michiharu Nakamura
IPC分类号： H04Q7/00
CPC分类号： H04L1/0026 , H04B1/70755 , H04L1/0003 , H04L1/0009 , H04L1/0021 , H04L1/0025 , H04L1/0031 , H04L1/1812 , H04W28/18
摘要： A method of reporting received signal quality to a transmitter includes measuring a received signal quality in a receiver, and selectively performing the steps of reporting the received signal quality to the transmitter, and reporting a selected modulation and coding scheme to the transmitter.
摘要翻译：将接收到的信号质量报告给发射机的方法包括测量接收机中的接收信号质量，并且选择性地执行将接收到的信号质量报告给发射机的步骤，并将所选择的调制和编码方案报告给发射机。

7. 发明授权

US4426700A Semiconductor laser device 失效
标题翻译：半导体激光器件
公开(公告)号：US4426700A
公开(公告)日：1984-01-17
申请号：US260744
申请日：1981-05-05
申请人： Motohisa Hirao , Atsutoshi Doi , Michiharu Nakamura , Shinji Tsuji , Takao Mori
发明人： Motohisa Hirao , Atsutoshi Doi , Michiharu Nakamura , Shinji Tsuji , Takao Mori
IPC分类号： H01S5/00 , H01S5/227 , H01S3/19
CPC分类号： H01S5/227 , H01S5/2275
摘要： A buried-heterostructure semiconductor laser including a mesa-shaped optical confinement region having an active layer and a clad layer and disposed on a semiconductor substrate; a burying layer burying both side surfaces of the region; and at least one p-n junction so formed inside the burying layer in parallel to the active layer as to be brought under the reversely biased state during the operation of the laser; wherein surface protection semiconductor layers are formed on the mesa-shaped optical confinement region and on the burying layer, respectively, for protecting the semiconductor assembly in the arrangement such that these surface protection semiconductor layers do not come into direct contact with each other. Even if the forbidden band gas of these surface protection semiconductor layers are relatively small, it is possible to realize a semiconductor laser having an extremely small leakage current and reduced variance of threshold current values, while protecting the surface of the multi-layer semiconductor layers.
摘要翻译：一种掩埋异质结构半导体激光器，包括具有有源层和覆层的台面形状的光限制区域，并设置在半导体衬底上; 埋藏在该区域的两个侧表面上的掩埋层; 以及在激光器的工作过程中平行于活性层在掩埋层内部形成的至少一个p-n结，使其处于反向偏置状态; 其中表面保护半导体层分别形成在台状光限制区域和掩埋层上，用于保护半导体组件的布置，使得这些表面保护半导体层不彼此直接接触。即使这些表面保护半导体层的禁带宽度相对较小，也可以在保护多层半导体层的表面的同时实现具有极小的漏电流和减小阈值电流值的方差的半导体激光器。

8. 发明授权

US4404678A Semiconductor laser device 失效
标题翻译：半导体激光器件
公开(公告)号：US4404678A
公开(公告)日：1983-09-13
申请号：US365606
申请日：1982-04-05
申请人： Kunio Aiki , Michiharu Nakamura , Jun-ichi Umeda
发明人： Kunio Aiki , Michiharu Nakamura , Jun-ichi Umeda
IPC分类号： H01L33/00 , H01S5/10 , H01S5/223 , H01S3/19
CPC分类号： H01S5/10 , H01L33/0025 , H01S5/2232 , H01S5/0655 , H01S5/1064 , H01S5/2234 , H01S5/3203 , H01S5/3211
摘要： A semiconductor laser device of this invention has a built-in passive guiding mechanism along the junction plane by growing planar double hetero (DH) layers on a grooved or projected substrate. It operates stably in the lowest transverse mode and provides light-output versus current characteristics free of either kinks or any anomalies.
摘要翻译：本发明的半导体激光器件通过在带槽或投影的衬底上生长平面双异质（DH）层，具有沿接合面的内置的被动引导机构。它在最低横向模式下稳定工作，并提供光输出与电流特性，无扭曲或任何异常现象。

9. 发明授权

US4326176A Semiconductor laser device 失效
标题翻译：半导体激光器件
公开(公告)号：US4326176A
公开(公告)日：1982-04-20
申请号：US786758
申请日：1977-04-12
申请人： Kunio Aiki , Michiharu Nakamura , Jun-ichi Umeda
发明人： Kunio Aiki , Michiharu Nakamura , Jun-ichi Umeda
IPC分类号： H01L33/00 , H01S5/10 , H01S5/223 , H01S3/19
CPC分类号： H01S5/10 , H01L33/0025 , H01S5/2232 , H01S5/0655 , H01S5/1064 , H01S5/2234 , H01S5/3203 , H01S5/3211
摘要： A semiconductor laser device of this invention has a built-in passive guiding mechanism along the junction plane by growing planar double hetero (DH) layers on a grooved or projected substrate. It operates stably in the lowest transverse mode and provides light-output versus current characteristics fee of either kinks or any anomalies.
摘要翻译：本发明的半导体激光器件通过在带槽或投影的衬底上生长平面双异质（DH）层，具有沿接合面的内置的被动引导机构。它在最低横向模式下稳定运行，并提供扭曲或任何异常现象的光输出与电流特性费用。

10. 发明授权

US08488520B2 Adaptive modulation and coding 有权
标题翻译：自适应调制和编码
公开(公告)号：US08488520B2
公开(公告)日：2013-07-16
申请号：US11783156
申请日：2007-04-06
申请人： Yassin Aden Awad , Michiharu Nakamura
发明人： Yassin Aden Awad , Michiharu Nakamura
IPC分类号： H04W60/00
CPC分类号： H04L1/0026 , H04B1/70755 , H04L1/0003 , H04L1/0009 , H04L1/0021 , H04L1/0025 , H04L1/0031 , H04L1/1812 , H04W28/18
摘要： A base station, for use in a wireless communication system, includes a report receiving unit operable to receive from a user equipment of the system a report of a downlink received signal quality produced by the user equipment. The report receiving unit includes a unit operable to receive a report of a measuring received signal quality or a report of a selected modulation and coding scheme to the transmitter.
摘要翻译：用于无线通信系统的基站包括报告接收单元，其可操作以从系统的用户设备接收由用户设备产生的下行链路接收信号质量的报告。报告接收单元包括一个单元，用于向发射机接收测量接收信号质量的报告或所选择的调制和编码方案的报告。

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