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11. 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。

12. 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。

13. 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。

14. 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。

15. 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。

16. 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。

17. 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。

18. 发明授权

US08401463B2 Relay station, radio communication system, and control method of relay station 有权
标题翻译：中继站，无线电通信系统和中继站的控制方法
公开(公告)号：US08401463B2
公开(公告)日：2013-03-19
申请号：US12409786
申请日：2009-03-24
申请人： Michiharu Nakamura
发明人： Michiharu Nakamura
IPC分类号： H04B7/185
CPC分类号： H04W16/26 , H04B7/15557 , H04B7/2606 , H04W52/0203 , H04W52/0245 , Y02D70/146 , Y02D70/446 , Y02D70/449
摘要： A relay station for relaying a radio communication between a radio terminal and a base station includes a relay standby unit configured to, in a relay standby state, receive a connection request transmitted from the radio terminal to the base station in response to broadcast information from the base station; a connection request detector configured to, in a relay standby state, detect the connection request transmitted from the radio terminal to the base station; and a relay operation unit configured to relay a radio communication between the radio terminal and the base station when the relay station shifts from the relay standby state to a relay operation state in response to the connection request detected by the connection request detector in the relay standby state.
摘要翻译：用于中继无线电终端和基站之间的无线电通信的中继站包括：中继待机单元，被配置为在中继待机状态下响应于来自所述基站的广播信息，从所述无线终端发送到所述基站的连接请求基站; 连接请求检测器，被配置为在中继待机状态下检测从无线终端发送到基站的连接请求; 以及中继操作单元，其被配置为当所述中继站响应于所述连接请求检测器在所述中继待机中检测到的连接请求而从所述中继站待机状态转移到中继操作状态时，中继所述无线终端与所述基站之间的无线电通信州。

19. 发明授权

US08121072B2 Adaptive modulation and coding 有权
标题翻译：自适应调制和编码
公开(公告)号：US08121072B2
公开(公告)日：2012-02-21
申请号：US11783155
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： H04B7/00 , H04B17/00 , H04W4/00 , H04W72/00 , H04L1/00
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 mobile communication system for transmitting or receiving a signal among a user equipment and a base station, includes the user equipment and the base station. The user equipment includes a unit operable to measure a received signal quality, and a unit operable to report the measuring received signal quality to the base station or a selected modulation and coding scheme to the base station. The base station includes a unit operable to receive the measuring received signal quality at the user equipment or an information indicating a selected modulation and coding scheme at the user equipment.
摘要翻译：一种用于在用户设备和基站之间发送或接收信号的移动通信系统，包括用户设备和基站。用户设备包括可操作以测量接收到的信号质量的单元，以及用于向基站报告测量接收信号质量的单元或所选择的调制和编码方案。基站包括可操作以在用户设备处接收测量接收信号质量的单元或指示在用户设备处选择的调制和编码方案的信息。

20. 发明授权

US07852906B2 Wireless communication device and channel estimation and separation method in multi input system 有权
标题翻译：多输入系统中的无线通信设备和信道估计与分离方法
公开(公告)号：US07852906B2
公开(公告)日：2010-12-14
申请号：US11898711
申请日：2007-09-14
申请人： Liang Zhou , Michiharu Nakamura
发明人： Liang Zhou , Michiharu Nakamura
IPC分类号： H04L27/30
CPC分类号： H04L25/0204 , H04L25/022 , H04L25/0232 , H04L27/2613 , H04L27/2647
摘要： In a wireless communication apparatus of multi-input system, Fourier transform is used to estimate the frequency response of a received signal and further provide a converted impulse response of time domain, and a window function having a simple lowpass filter characteristic is used to separate the impulse response into channel impulse responses of the respective signals. The window function having the lowpass filter characteristic is relatively simple in arithmetic and receives less influence from the channel statistical characteristic, so that it can realize both a separation of multi-antenna channel impulse responses and a highly-precise channel estimation at the same time.
摘要翻译：在多输入系统的无线通信装置中，使用傅里叶变换来估计接收信号的频率响应，并进一步提供时域的转换脉冲响应，并且使用具有简单的低通滤波器特性的窗函数来分离对各信号的信道脉冲响应的脉冲响应。具有低通滤波器特性的窗口功能在算术上相对简单，并且从信道统计特性得到的影响较小，从而可以同时实现多天线信道脉冲响应的分离和高精度信道估计。

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