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1. 发明申请

US20080232513A1 APPARATUS AND METHOD FOR PREAMBLE DETECTION AND INTEGER CARRIER FREQUENCY OFFSET ESTIMATION 有权
标题翻译：预先检测和整体载波频偏估计的装置和方法
公开(公告)号：US20080232513A1
公开(公告)日：2008-09-25
申请号：US12044120
申请日：2008-03-07
申请人： Xin Wang , Yuuta Nakaya , Syuusaku Suzuki , Michiharu Nakamura , Hiroyuki Hayashi
发明人： Xin Wang , Yuuta Nakaya , Syuusaku Suzuki , Michiharu Nakamura , Hiroyuki Hayashi
IPC分类号： H04L27/06 , H03D1/00
CPC分类号： H04L27/2675 , H04L27/2659
摘要： This invention provides an apparatus and method for preamble detection and integer carrier frequency offset estimation, which method comprises the steps of: determining the window of useful subcarriers in preamble transformed to frequency domain based on pre-determined possible integer carrier frequency offset and the length of the preamble, so as to select the useful subcarriers; extracting a plurality of subcarrier sequences having a length equal to that of the preamble from the useful subcarriers; calculating conjugative multiplications of each subcarrier and its neighboring subcarriers in the subcarrier sequences extracted; acquiring the real part of the conjugative multiplications; calculating the cross correlations between the real part of the conjugative multiplications and known preambles modulated by DBPSK, and outputting the calculated correlation values; and detecting preamble index of a target base station with the calculated correlation values to select a target cell, and estimating integer carrier frequency offset with respect to the target base station.
摘要翻译：本发明提供了一种用于前导码检测和整数载波频偏估计的装置和方法，该方法包括以下步骤：基于预定可能的整数载波频率偏移量确定前导码转换到频域的有用子载波的窗口，前导码，以便选择有用的子载波; 从有用的子载波中提取长度等于前导码长度的多个子载波序列; 计算提取的子载波序列中每个子载波及其相邻子载波的共轭乘法; 获取共轭乘法的实部; 计算共轭乘法的实部与由DBPSK调制的已知前同步之间的互相关，并输出所计算的相关值; 以及使用所计算的相关值检测目标基站的前导码索引，以选择目标小区，并且针对目标基站估计整数载波频率偏移。

2. 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。

3. 发明授权

US08040922B2 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和方法
公开(公告)号：US08040922B2
公开(公告)日：2011-10-18
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。

4. 发明授权

US07995680B2 Apparatus and method for preamble detection and integer carrier frequency offset estimation 有权
标题翻译：用于前导码检测和整数载波频偏估计的装置和方法
公开(公告)号：US07995680B2
公开(公告)日：2011-08-09
申请号：US12044120
申请日：2008-03-07
申请人： Xin Wang , Yuuta Nakaya , Syuusaku Suzuki , Michiharu Nakamura , Hiroyuki Hayashi
发明人： Xin Wang , Yuuta Nakaya , Syuusaku Suzuki , Michiharu Nakamura , Hiroyuki Hayashi
IPC分类号： H04L27/06
CPC分类号： H04L27/2675 , H04L27/2659
摘要： This invention provides an apparatus and method for preamble detection and integer carrier frequency offset estimation, which method comprises the steps of: determining the window of useful subcarriers in preamble transformed to frequency domain based on pre-determined possible integer carrier frequency offset and the length of the preamble, so as to select the useful subcarriers; extracting a plurality of subcarrier sequences having a length equal to that of the preamble from the useful subcarriers; calculating conjugative multiplications of each subcarrier and its neighboring subcarriers in the subcarrier sequences extracted; acquiring the real part of the conjugative multiplications; calculating the cross correlations between the real part of the conjugative multiplications and known preambles modulated by DBPSK, and outputting the calculated correlation values; and detecting preamble index of a target base station with the calculated correlation values to select a target cell, and estimating integer carrier frequency offset with respect to the target base station.
摘要翻译：本发明提供了一种用于前导码检测和整数载波频偏估计的装置和方法，该方法包括以下步骤：基于预定可能的整数载波频率偏移量确定前导码转换到频域的有用子载波的窗口，前导码，以便选择有用的子载波; 从有用的子载波中提取长度等于前导码长度的多个子载波序列; 计算提取的子载波序列中每个子载波及其相邻子载波的共轭乘法; 获取共轭乘法的实部; 计算共轭乘法的实部与由DBPSK调制的已知前同步之间的互相关，并输出所计算的相关值; 以及用所计算的相关值检测目标基站的前导码索引，以选择目标小区，并估计相对于目标基站的整数载波频率偏移。

5. 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。

6. 发明申请

US20070223603A1 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：US20070223603A1
公开(公告)日：2007-09-27
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： H04K1/10
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。

7. 发明申请

US20080214120A1 Communication system and communication method 审中-公开
标题翻译：通信系统和通信方法
公开(公告)号：US20080214120A1
公开(公告)日：2008-09-04
申请号：US12007016
申请日：2008-01-04
申请人： Yuuta Nakaya , Michiharu Nakamura , Kazuhiko Kobayashi
发明人： Yuuta Nakaya , Michiharu Nakamura , Kazuhiko Kobayashi
IPC分类号： H04B17/00
CPC分类号： H04L5/006 , H04L5/0007 , H04L5/0039 , H04L5/0046 , H04L5/0048
摘要： A noise judgment unit of a receiver (mobile terminal) judges whether there is a factor for poor reception such as 1/f noise in a receiving unit of the mobile terminal based upon the output of an FFT unit, and notifies a transmitter (base station) of that measurement result. When the mobile terminal is affected by 1/f noise, the base station transmits a signal to that mobile station by an OFDM method without using subcarriers at which ⅕ noise generates.
摘要翻译：接收机（移动终端）的噪声判断单元基于FFT单元的输出来判断在移动终端的接收单元中是否存在诸如1 / f噪声之类的接收不良的因素，并通知发送机（基站）的测量结果。当移动终端受1 / f噪声的影响时，基站通过OFDM方法向该移动台发送信号，而不使用1/5噪声产生的子载波。

8. 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。

9. 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。

10. 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。

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