公开(公告)号：US20090175228A1

公开(公告)日：2009-07-09

申请号：US12327278

申请日：2008-12-03

申请人： Dai Kimura ,  Tsuyoshi Shimomura

发明人： Dai Kimura ,  Tsuyoshi Shimomura

IPC分类号： H04J1/00 ,  H04W72/04

CPC分类号： H04L27/262 ,  H04B17/327 ,  H04L5/0007 ,  H04L5/0051 ,  H04W24/00 ,  H04W48/08 ,  H04W72/0453

摘要： A base station that assigns frequencies to UP link pilot signals in a radio communication system, where the base station stores the correlation between each of a plurality of pilot sequences having different Peak to Average Power characteristics and a plurality of frequencies that are used for transmitting the pilot sequence by frequency multiplexing, and makes the correlation between each of said pilot sequences and said assigned frequencies in adjacent cells or sectors different. Moreover, the base station measures the reception quality of signals received from a user terminal, makes reference to the stored correlation and finds a pilot sequence having Peak to Average Power characteristic that correspond to said reception quality, then sends an instruction to the user terminal so that the user terminal transmits the pilot sequence using the frequencies assigned to this pilot sequence.

摘要翻译： 一种在无线电通信系统中将频率分配给UP链路导频信号的基站，其中基站存储具有不同峰值与平均功率特性的多个导频序列中的每一个与用于发送的多个频率之间的相关性 导频序列，并且使相邻小区或扇区中的每个所述导频序列与所分配的频率之间的相关性不同。 此外，基站测量从用户终端接收的信号的接收质量，参考所存储的相关性，并找到具有与所述接收质量相对应的峰均功率特性的导频序列，然后向用户终端发送指令 用户终端使用分配给该导频序列的频率来发送导频序列。

公开(公告)号：US07548595B2

公开(公告)日：2009-06-16

申请号：US10988411

申请日：2004-11-12

申请人： Tsuyoshi Shimomura ,  Dai Kimura ,  Tetsuhiro Futami ,  Morihiko Minowa

发明人： Tsuyoshi Shimomura ,  Dai Kimura ,  Tetsuhiro Futami ,  Morihiko Minowa

IPC分类号： H03K9/00

CPC分类号： H04L25/0202 ,  H04B2201/70701 ,  H04L25/0222

摘要： The invention relates to an apparatus and a method for estimating a fading frequency of incoming received waves in a receiving station of a radio communication system or radio transmission system. An object of the invention is to estimate a fading frequency efficiently and accurately without substantially complexing the configuration of the system. To this end, the invention provides an apparatus for estimating a fading frequency from a pilot signal in a reception signal, which includes a calculation unit for calculating a magnitude of a complex product of two symbols that are received at different instants, and an estimation unit for estimating a fading frequency according to the calculated magnitude of the complex product.

摘要翻译： 本发明涉及一种用于估计无线电通信系统或无线电传输系统的接收站中的输入接收波的衰落频率的装置和方法。 本发明的目的是有效且准确地估计衰落频率，而不会使系统的配置基本上复杂化。 为此，本发明提供了一种用于从接收信号中的导频信号估计衰落频率的装置，其包括：用于计算在不同时刻接收的两个符号的复乘的幅度的计算单元和估计单元 用于根据所计算的复数乘积的大小来估计衰落频率。

公开(公告)号：US08804594B2

公开(公告)日：2014-08-12

申请号：US13331147

申请日：2011-12-20

申请人： Yuya Harada ,  Dai Kimura

发明人： Yuya Harada ,  Dai Kimura

IPC分类号： H04H20/71 ,  H04M3/42

CPC分类号： H04W4/06

摘要： A radio communication system includes a first server and a second server. The first server includes a first processor to receive, together with an identifier for identifying a base station, communication information transmitted from a plurality of mobile stations via the base station, extract, for the base station, a keyword frequently used in communications between the first server and the plurality of mobile stations on the basis of the received communication information and the received identifier, and transmit the extracted keyword together with the identifier. The second server includes a second processor to receive, together with the identifier, the keyword transmitted from the first server, and distribute distribution information corresponding to the received keyword to the plurality of mobile stations via the base station.

摘要翻译： 无线电通信系统包括第一服务器和第二服务器。 第一服务器包括第一处理器，用于与用于识别基站的标识符一起接收经由基站从多个移动台发送的通信信息，为基站提取经常用于第一 服务器和多个移动台，并根据接收到的通信信息和接收到的标识符，并将所提取的关键字与标识符一起发送。 所述第二服务器包括第二处理器，用于与所述标识符一起接收从所述第一服务器发送的关键字，并且经由所述基站将与所接收的关键字相对应的分发信息分发给所述多个移动站。

公开(公告)号：US07609775B2

公开(公告)日：2009-10-27

申请号：US11808541

申请日：2007-06-11

申请人： Dai Kimura ,  Tetsuhiro Futami ,  Yoshihiro Kawasaki

发明人： Dai Kimura ,  Tetsuhiro Futami ,  Yoshihiro Kawasaki

IPC分类号： H04L27/28 ,  H04B1/69

CPC分类号： H04L27/2647 ,  H04L27/2607

摘要： In a radio communication apparatus for forming a frame with a plurality of slots, and inserting a guard interval into each slot along with data for a mobile station to perform communication, a receive state acquisition section acquires a receive state of each mobile station, a frame format decision section decides a frame format of which guard interval length is, different for each slot based on the receive state of each mobile station, a slot assignment section assigns each slot of the frame format to data for each mobile station, and a frame format reporting section reports the decided frame format to the mobile stations via a reporting channel. The mobile station identifies the GI length based on the reported frame format and the slot number, removes the guard interval, and performs processing.

摘要翻译： 在用于形成具有多个时隙的帧的无线电通信装置中，并且与用于移动台进行通信的数据一起将保护间隔与每个时隙一起插入，接收状态获取部分获取每个移动台的接收状态，帧 格式决定部基于每个移动台的接收状态来决定保护间隔长度对于每个时隙不同的帧格式，时隙分配部将帧格式的每个时隙分配给每个移动台的数据，以及帧格式 报告部分通过报告信道将确定的帧格式报告给移动台。 移动台基于所报告的帧格式和时隙号识别GI长度，消除保护间隔，并执行处理。

公开(公告)号：US07366228B2

公开(公告)日：2008-04-29

申请号：US09918964

申请日：2001-07-31

申请人： Morihiko Minowa ,  Dai Kimura ,  Noriyuki Kawaguchi

发明人： Morihiko Minowa ,  Dai Kimura ,  Noriyuki Kawaguchi

IPC分类号： H04B1/00

CPC分类号： H04B1/7075 ,  H04B2201/70701 ,  H04L25/0232

摘要： In a channel estimating circuit, a Sync Word is demodulated by using a channel estimation value not with a symbol or a slot including the Sync Word to be demodulated, but with its preceding and succeeding symbols or slots. Furthermore, in a channel estimation process, if a Synch Word to be demodulated is included in any of groups into which a plurality of symbols are divided, the Sync Word is demodulated by using a channel estimation value obtained with the channel estimation process using not this group but another group.

摘要翻译： 在信道估计电路中，通过使用不具有符号的信道估计值或包括要解调的同步字，但具有其前和后符号或时隙的信道估计值来解调同步字。 此外，在信道估计处理中，如果要解调的同步字被包括在划分多个符号的组中的任一组中，则使用不是使用信道估计处理获得的信道估计值来解调同步字 小组，但另一组。

公开(公告)号：USD561669S1

公开(公告)日：2008-02-12

申请号：US29287133

申请日：2007-07-02

申请人： Youichi Sato ,  Dai Kimura ,  Hitomaro Asano ,  Kazuya Hamada ,  Kenji Hirozawa ,  Kenji Kato

设计人： Youichi Sato ,  Dai Kimura ,  Hitomaro Asano ,  Kazuya Hamada ,  Kenji Hirozawa ,  Kenji Kato

公开(公告)号：US08873609B2

公开(公告)日：2014-10-28

申请号：US13613916

申请日：2012-09-13

申请人： Takato Ezaki ,  Dai Kimura

发明人： Takato Ezaki ,  Dai Kimura

IPC分类号： H04B17/00 ,  H04L25/02

CPC分类号： H04L25/0222 ,  H04L25/0224

摘要： A communication apparatus including: a receiver to receive signals including reference signals at each of a plurality of different reception intervals; and a processor to estimate phase differences between the signals based on the reference signals, to determine a plurality of phase difference candidates for each of the reception intervals based on the phase differences, to select, from among a plurality of combinations of the phase difference candidates for the reception intervals, a combination of the phase difference candidates between the signals, and to estimate a frequency deviation of the signals based on the phase difference candidates included in the combination.

摘要翻译： 一种通信装置，包括：接收器，用于在多个不同的接收间隔中的每一个处接收包括参考信号的信号; 以及处理器，用于基于所述参考信号来估计所述信号之间的相位差，以基于所述相位差确定每个所述接收间隔的多个相位差候选，以从所述相位差候选的多个组合中选择 对于接收间隔，信号之间的相位差候选的组合，并且基于包括在组合中的相位差候选来估计信号的频率偏差。

公开(公告)号：US20110135041A1

公开(公告)日：2011-06-09

申请号：US13028546

申请日：2011-02-16

申请人： Takato Ezaki ,  Dai Kimura

发明人： Takato Ezaki ,  Dai Kimura

IPC分类号： H04B1/16 ,  H04L27/06

CPC分类号： H04L27/2657 ,  H04L27/2679

摘要： A procedure of receiving includes estimating a phase offset of a received signal and calculating one or more phase offsets which result in the estimated phase offset of the received signal and which have different phase rotation directions and/or different phase rotation amounts from one another; compensating for the phase offset of the received signal, using each of a plurality of phase offsets that are the estimated phase offset and the calculated phase offsets, and demodulating and decoding the plurality of compensated received signals; and selecting a decoding result that is the most likely to be the received signal among a plurality of results of the decoding corresponding one for each of the plurality of phase offsets.

摘要翻译： 接收的过程包括估计接收信号的相位偏移并计算一个或多个相位偏移，其导致所估计的接收信号的相位偏移并且彼此具有不同的相位旋转方向和/或不同的相位旋转量; 使用作为估计的相位偏移和所计算的相位偏移的多个相位偏移中的每一个补偿接收信号的相位偏移，以及对多个经补偿的接收信号进行解调和解码; 以及对于所述多个相位偏移中的每一个，选择对于与所述多个相位偏移中的每一个相对应的解码的多个结果中最可能是接收信号的解码结果。

公开(公告)号：US20100107031A1

公开(公告)日：2010-04-29

申请号：US12441843

申请日：2006-09-18

申请人： Dai Kimura ,  Frederic Guilloud ,  Ramesh Mahendra Pyndiah

发明人： Dai Kimura ,  Frederic Guilloud ,  Ramesh Mahendra Pyndiah

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H04L1/0045 ,  H03M13/1171 ,  H04L1/0057 ,  H04L1/06

摘要： A wireless communication system constructed by a MIMO antenna system and transmitting information from a transmitter having Nt number of transmitting antennas to a receiver 3 having Nr number of receiving antennas. The receiver 3 of this wireless communication system 1 linking the inputs and outputs between a demodulating unit 32 demodulating the input signals from receiving antennas 31 and a decoding unit 35 receiving as input that demodulation output and decoding the non-binary LDPC code of the GF(q) one-to-one under predetermined conditions to enable the inputs and outputs of this demodulating unit 32 and decoding unit 35 to be directly connected and thereby improve the decoding characteristic. That predetermined condition is preferably q=2Nt·m.

摘要翻译： 一种由MIMO天线系统构成的无线通信系统，并将具有N个发送天线的发送机的信息发送到具有N个接收天线数量的接收机3。 该无线通信系统1的接收机3将解调来自接收天线31的输入信号的解调单元32和接收作为输入的解码输出解码的解码单元35之间的输入和输出相连接，解码输出和解码GF的非二进制LDPC码 q）在预定条件下一对一，使得解调单元32和解码单元35的输入和输出能够直接连接，从而提高解码特性。 该预定条件优选为q = 2Nt·m。

公开(公告)号：USD614548S1

公开(公告)日：2010-04-27

申请号：US29344987

申请日：2009-10-07

申请人： Ryuichi Oya ,  Dai Kimura ,  Tadao Hoshino ,  Yuji Ishimoto

设计人： Ryuichi Oya ,  Dai Kimura ,  Tadao Hoshino ,  Yuji Ishimoto