专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明申请

US20090287981A1 Construction of Parity-Check Matrices for Non-Binarys LDPC Codes 有权
标题翻译：非二进制奇偶校验矩阵的构造LDPC码
公开(公告)号：US20090287981A1
公开(公告)日：2009-11-19
申请号：US12225796
申请日：2006-03-30
申请人： Dai Kimura , Ramesh Mahendra Pyndiah , Frederic Guilloud
发明人： Dai Kimura , Ramesh Mahendra Pyndiah , Frederic Guilloud
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H03M13/033 , H03M13/1171
摘要： A parity check matrix construction method for constructing a non-binary parity check matrix defining a non-binary LDPC code. In particular, a parity check matrix construction method for setting codewords able to stably give a superior decoding performance is provided. For this reason, the non-binary non-zero elements are selected so that the determinants of the partial matrices corresponding to the cycles in the parity check matrix do not become 0. Due to this, a non-binary parity check matrix able to give large weight codewords is constructed.
摘要翻译：一种用于构造定义非二进制LDPC码的非二进制奇偶校验矩阵的奇偶校验矩阵构造方法。特别地，提供了一种用于设置能够稳定地提供优良解码性能的码字的奇偶校验矩阵构造方法。因此，选择非二进制非零元素，使得与奇偶校验矩阵中的周期相对应的部分矩阵的决定因素不变为0.由此，能够给出构建大重量码字。

42. 发明授权

US07583968B2 Radio communication apparatus for feeding back radio link quality information 有权
标题翻译：用于反馈无线电链路质量信息的无线电通信装置
公开(公告)号：US07583968B2
公开(公告)日：2009-09-01
申请号：US10802415
申请日：2004-03-17
申请人： Dai Kimura
发明人： Dai Kimura
IPC分类号： H03M13/00 , H03M13/35 , H04M1/00 , H04B7/185 , H04Q7/00 , H04L23/00
CPC分类号： H04L1/0021 , H04L1/0003 , H04L1/0009 , H04L1/0016 , H04L1/0034 , H04L1/1671
摘要： A base station has a time correlation calculating unit for estimating a variation-with-time characteristic of radio link quality using radio downlink quality information reported by a mobile station, a target error rate setting unit for changing over a target error rate adaptively using this variation-with-time characteristic, and an MCS decision unit for deciding a modulation scheme and/or encoding rate, in such a manner that packet error rate becomes equal to the target error rate, using the radio link quality information as well as reception success/failure information reported by the mobile station. The base station transmits a packet based upon the modulation scheme and/or encoding rate decided.
摘要翻译：基站具有时间相关计算单元，用于使用移动站报告的无线下行链路质量信息来估计无线电链路质量的随时间变化特性，目标误码率设置单元，用于使用该变化来自适应地改变目标误码率以及用于使用无线电链路质量信息以及接收成功/无效链路质量信息以分组错误率变为等于目标错误率的方式来决定调制方案和/或编码速率的MCS判定单元，移动台报告的故障信息。基站根据所决定的调制方式和/或编码率发送分组。

43. 外观设计

USD570749S1 Bumper of motor vehicle 有权
公开(公告)号：USD570749S1
公开(公告)日：2008-06-10
申请号：US29287134
申请日：2007-07-02
申请人： Youichi Sato , Dai Kimura , Hideki Nakamura , Masashi Aikawa
设计人： Youichi Sato , Dai Kimura , Hideki Nakamura , Masashi Aikawa

44. 外观设计

USD475662S1 Radiator grill 失效
标题翻译：散热器格栅
公开(公告)号：USD475662S1
公开(公告)日：2003-06-10
申请号：US29157818
申请日：2002-03-27
申请人： Iwao Koizumi , Dai Kimura , Kouichi Hayashi , Kunihiko Kurisu
设计人： Iwao Koizumi , Dai Kimura , Kouichi Hayashi , Kunihiko Kurisu

45. 发明授权

US08654794B2 Radio communication method and a base station and user terminal thereof 有权
标题翻译：无线通信方法及其基站及其用户终端
公开(公告)号：US08654794B2
公开(公告)日：2014-02-18
申请号：US13549826
申请日：2012-07-16
申请人： Tsuyoshi Shimomura , Dai Kimura
发明人： Tsuyoshi Shimomura , Dai Kimura
IPC分类号： H04B3/10 , H04J1/16
CPC分类号： H04L27/2637 , H04L5/0007 , H04L5/0048 , H04L5/005 , H04L5/0091 , H04L23/02 , H04L27/2601 , H04L27/2613 , H04W72/0406 , H04W72/042 , H04W72/0453
摘要： A radio communication method in a radio communication system in which data signals for a first and second user are respectively transmitted using first and second subcarrier groups, and pilot signals for the first and second users are multiplexed using time-division multiplexing with the data signals for those users, including arranging a pilot signal of the first user at frequencies different from frequencies of a pilot signal of the second user and mapping subcarrier components of the pilot signals so that one of subcarrier components of higher frequencies corresponds to one of subcarrier components of lower frequencies, wherein the pilot signals are generated using a Zadoff-Chu sequence.
摘要翻译：一种无线电通信系统中的无线电通信方法，其中使用第一和第二子载波组分别发送用于第一和第二用户的数据信号，并且使用与数据信号进行时分多路复用的第一和第二用户的导频信号，这些用户包括以与第二用户的导频信号的频率不同的频率布置第一用户的导频信号，并映射导频信号的子载波分量，使得较高频率的子载波分量之一对应于较低频率的子载波分量之一频率，其中使用Zadoff-Chu序列生成导频信号。

46. 发明授权

US08422425B2 Terminal device and base station device 有权
标题翻译：终端设备和基站设备
公开(公告)号：US08422425B2
公开(公告)日：2013-04-16
申请号：US12791455
申请日：2010-06-01
申请人： Dai Kimura
发明人： Dai Kimura
IPC分类号： H04W4/00
CPC分类号： H04L1/0001
摘要： A base station measures a signal to interference power ratio using a control signal received from a terminal device through wireless communication, and decides an MCS value indicating a combination of a modulation scheme and a channel code rate. The base station includes the decided MCS value in uplink-channel transmission information and transmits the MCS value to the terminal device by using a control channel including downlink scheduling information. The terminal device decides a transmission format of an uplink data channel based on the MCS in the uplink-channel transmission information. The terminal device, when having received a downlink data channel from the base station, decides a response content (ACK/NACK/DTX) to the base station, based on the result of decoding the downlink data channel. Thereafter, the terminal device transmits the decided response content to the base station through the uplink data channel using the decided transmission format.
摘要翻译：基站使用通过无线通信从终端装置接收到的控制信号来测量信号与干扰功率比，并且决定表示调制方式和信道码率的组合的MCS值。基站在上行链路信道传输信息中包括确定的MCS值，并且通过使用包括下行链路调度信息的控制信道将MCS值发送到终端设备。终端装置基于上行链路信道发送信息中的MCS来决定上行数据信道的发送格式。终端装置在从基站接收到下行链路数据信道的情况下，基于下行链路数据信道的解码结果向基站判定响应内容（ACK / NACK / DTX）。此后，终端设备使用所确定的传输格式，通过上行链路数据信道将决定的响应内容发送给基站。

47. 发明授权

US08369896B2 Base station, communication system, and communication method 有权
标题翻译：基站，通信系统和通信方式
公开(公告)号：US08369896B2
公开(公告)日：2013-02-05
申请号：US12820209
申请日：2010-06-22
申请人： Dai Kimura , Takato Ezaki , Yuya Harada
发明人： Dai Kimura , Takato Ezaki , Yuya Harada
IPC分类号： H04M1/00
CPC分类号： H04W16/10 , H04W72/0426 , H04W92/20
摘要： A base station used in a communication system wherein user terminals are classified into cell center terminals and cell edge terminals, based on reception quality and includes a receiving unit that receives cell edge band information transmitted from another base station and indicative of a cell edge band allocated to a cell edge terminal in a nearby cell; a determining unit that determines a cell edge band for a cell of the base station, based on the cell edge band information for a plurality of nearby cells and received by the receiving unit; and a communicating unit that, via the cell edge band determined by the determining unit, communicates with the cell edge terminals in the cell of the base station.
摘要翻译：一种在通信系统中使用的基站，其中用户终端基于接收质量分为小区中心终端和小区边缘终端，并且包括：接收单元，其接收从另一个基站发送的小区边缘频带信息，并指示分配的小区边缘频带到附近小区中的小区边缘终端; 基于所述多个相邻小区的小区边缘频带信息并由所述接收单元接收的确定所述基站的小区的小区边缘频带的确定单元; 以及通过由确定单元确定的小区边缘频带与基站的小区中的小区边缘终端进行通信的通信单元。

48. 发明授权

US08347168B2 Multiple-input-multiple-output transmission using non-binary LDPC coding 有权
标题翻译：使用非二进制LDPC编码的多输入多输出传输
公开(公告)号：US08347168B2
公开(公告)日：2013-01-01
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： G06F11/00
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。

49. 发明授权

US08023531B2 Spread code allocating method, despreading method, transmitting device, receiving device, communicating device, wireless base station device, and mobile terminal device 有权
标题翻译：扩频分配方法，解扩方式，发送设备，接收设备，通信设备，无线基站设备和移动终端设备
公开(公告)号：US08023531B2
公开(公告)日：2011-09-20
申请号：US11808999
申请日：2007-06-14
申请人： Tsuyoshi Shimomura , Dai Kimura , Tetsuya Yano
发明人： Tsuyoshi Shimomura , Dai Kimura , Tetsuya Yano
IPC分类号： H04J4/00 , H04B1/707
CPC分类号： H04J13/18 , H04J11/00 , H04J13/0044 , H04L5/0016 , H04L5/0017 , H04L5/0021 , H04L5/0048
摘要： When a two-dimensional spread code, with which spreading is made in time and frequency directions, is allocated to each channel, spread codes at least one of time and frequency directions of which are mutually orthogonal, and with which despreading can be made with spreading factors that are smaller than the original spreading factors in the respective directions are recognized as selection targets, and a spread code to be allocated to each channel is determined from among the spread codes recognized as the selection targets.
摘要翻译：当将在时间和频率方向上进行扩展的二维扩展码分配给每个信道时，其时间和频率方向中的至少一个相互正交的扩频码可以通过扩频进行解扩比各方向的原始扩展因子小的因子被识别为选择目标，从被识别为选择目标的扩展码中确定要分配给每个信道的扩展码。

50. 发明授权

US07805121B2 Radio signal receiver and gain control method thereof 有权
标题翻译：无线电信号接收机及其增益控制方法
公开(公告)号：US07805121B2
公开(公告)日：2010-09-28
申请号：US11797281
申请日：2007-05-02
申请人： Dai Kimura , Hiroyuki Seki
发明人： Dai Kimura , Hiroyuki Seki
IPC分类号： H04B1/06
CPC分类号： H03G3/3078
摘要： A radio signal receiver in which a RF-receiving unit 12 converts a radio received signal to a baseband signal, an AD-conversion unit 15a, 15b converts that baseband received signal to a digital signal, and a baseband-processing unit 16 uses the digital signal to perform specified baseband processing, and in which an average-interference-level-measurement unit (SIR measurement unit) 17 measures the average interference level of the received signal, an amp-gain-adjustment unit 18 sets the gain so that a fixed binary value becomes that measured average interference level, and a variable-gain amp 14a, 14b controls the reception level of the received signal by that set gain.
摘要翻译： RF接收单元12将无线电接收信号转换为基带信号的无线电信号接收机，AD转换单元15a，15b将该基带接收信号转换为数字信号，基带处理单元16使用数字信号进行指定的基带处理，其中平均干扰电平测量单元（SIR测量单元）17测量接收信号的平均干扰电平，放大器增益调整单元18设置增益，使得固定二进制值变为测量的平均干扰电平，可变增益放大器14a，14b通过该设定的增益来控制接收信号的接收电平。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式