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    • 73. 发明授权
    • Radio transmission device, and radio transmission method
    • 无线传输设备,无线传输方式
    • US07821991B2
    • 2010-10-26
    • US12278543
    • 2007-02-09
    • Takashi IwaiDaichi ImamuraKenichi MiyoshiSadaki FutagiAtsushi MatsumotoTomofumi Takata
    • Takashi IwaiDaichi ImamuraKenichi MiyoshiSadaki FutagiAtsushi MatsumotoTomofumi Takata
    • H04W4/00
    • H04J13/0055H04J13/0062H04J13/0066
    • Provided are a radio transmission device and a radio transmission method, which prevent the deterioration of a preamble detecting performance while reducing the collision probability of a RACH. In this radio transmission device, a Signature table storage unit (103) divides the magnitudes of transmission loss levels into individual levels corresponding to the distances from a base station, to cause CAZAC series and circulation shift quantities to correspond to each other at the individual levels, and is provided with a table containing a plurality of Signatures created from the CAZAC series and the circulation shift quantities caused to correspond to each other. A Signature selecting unit (104) selects one of the corresponding Signatures at random from the Signature table storage unit (103), on the basis of the magnitude of the transmission loss level outputted from a transmission loss level deciding unit (102). A RACH signal generating unit (105) generates the RACH signal with the Signature selected.
    • 提供一种无线传输装置和无线传输方法,其防止前导码检测性能的劣化,同时降低RACH的冲突概率。 在该无线发送装置中,签名表存储部(103)将传输损耗级别的大小划分为与基站的距离对应的各个级别,使得CAZAC序列和循环移位量在各个级别彼此对应 并且设置有包含从CAZAC系列创建的多个签名和导致彼此对应的循环移位量的表。 签名选择单元(104)根据从传输损失等级决定单元(102)输出的传输损耗电平的大小,从签名表存储单元(103)中随机选择一个对应的签名。 RACH信号生成单元(105)在选择了签名的情况下生成RACH信号。
    • 75. 发明申请
    • RADIO TRANSMISSION DEVICE, AND RADIO TRANSMISSION METHOD
    • 无线电传输设备和无线电传输方法
    • US20090028065A1
    • 2009-01-29
    • US12278543
    • 2007-02-09
    • Takashi IwaiDaichi ImamuraKenichi MiyoshiSadaki FutagiAtsushi MatsumotoTomofumi Takata
    • Takashi IwaiDaichi ImamuraKenichi MiyoshiSadaki FutagiAtsushi MatsumotoTomofumi Takata
    • H04L12/26
    • H04J13/0055H04J13/0062H04J13/0066
    • Provided are a radio transmission device and a radio transmission method, which prevent the deterioration of a preamble detecting performance while reducing the collision probability of a RACH. In this radio transmission device, a Signature table storage unit (103) divides the magnitudes of transmission loss levels into individual levels corresponding to the distances from a base station, to cause CAZAC series and circulation shift quantities to correspond to each other at the individual levels, and is provided with a table containing a plurality of Signatures created from the CAZAC series and the circulation shift quantities caused to correspond to each other. A Signature selecting unit (104) selects one of the corresponding Signatures at random from the Signature table storage unit (103), on the basis of the magnitude of the transmission loss level outputted from a transmission loss level deciding unit (102). A RACH signal generating unit (105) generates the RACH signal with the Signature selected.
    • 提供一种无线传输装置和无线传输方法,其防止前导码检测性能的劣化,同时降低RACH的冲突概率。 在该无线发送装置中,签名表存储部(103)将传输损耗级别的大小划分为与基站的距离对应的各个级别,使得CAZAC序列和循环移位量在各个级别彼此对应 并且设置有包含从CAZAC系列创建的多个签名和导致彼此对应的循环移位量的表。 签名选择单元(104)根据从传输损失等级决定单元(102)输出的传输损耗电平的大小,从签名表存储单元(103)中随机选择一个对应的签名。 RACH信号生成单元(105)在选择了签名的情况下生成RACH信号。
    • 76. 发明申请
    • Wireless Receiving Apparatus, Wireless Transmitting Apparatus, and Interference Signal Removing Method
    • 无线接收装置,无线发射装置和干扰信号去除方法
    • US20080192857A1
    • 2008-08-14
    • US11722856
    • 2005-12-26
    • Kenichi MiyoshiAkihiko NishioDaichi Imamura
    • Kenichi MiyoshiAkihiko NishioDaichi Imamura
    • H04B15/00H03D1/06
    • H04L27/2647H04B7/0842
    • A wireless receiving apparatus capable of efficiently removing interference signals in a multicarrier communication. In a mobile station (200) incorporating this wireless receiving apparatus, a selecting part (205) selects a plurality of the same symbols in accordance with a mapping pattern established at the time of generating OFDM symbols in a base station. A correlation value calculating part (207) determines correlation values between the subcarriers of the same symbols to generate an R-matrix, and further determines an inverse matrix of the R-matrix. An MMSE processing part (208) performs an MMSE processing to determine a weight (W) from both a P-vector received from a channel estimating part (206) and the inverse matrix of the R-matrix received from the correlation value calculating part (207). Multipliers (209-1 to 209-N) multiply each of the symbols selected by the selecting part (205) by the weight determined by the MMSE processing part (208). A combining part (210) combines the symbols as multiplied by the weight.
    • 一种能够有效地去除多载波通信中的干扰信号的无线接收装置。 在包含该无线接收装置的移动台(200)中,选择部(205)根据在基站中生成OFDM符号时所建立的映射模式来选择多个相同符号。 相关值计算部(207)确定相同符号的子载波之间的相关值以产生R矩阵,并进一步确定R矩阵的逆矩阵。 MMSE处理部分(208)执行MMSE处理,以从从信道估计部分(206)接收的P矢量和从相关值计算部分接收的R矩阵的逆矩阵两者来确定权重(W) 207)。 乘法器(209-1至209-N)将由选择部分(205)选择的每个符号乘以由MMSE处理部分(208)确定的权重。 组合部分(210)将符号乘以权重组合。
    • 78. 发明授权
    • Wireless transmitter, wireless receiver, and preamble sequence generation method
    • 无线发射机,无线接收机和前导序列生成方法
    • US08730939B2
    • 2014-05-20
    • US13258996
    • 2010-03-25
    • Kenichi MiyoshiYoshiko SaitoDaichi Imamura
    • Kenichi MiyoshiYoshiko SaitoDaichi Imamura
    • H04W56/00
    • H04L25/0204H04J13/10H04L25/0226H04L25/0248
    • Provided is a wireless transmitter capable of accurately specifying the number of multiplexed streams and correctly decoding the data signals when a preamble sequence transmitted from any antenna of a wireless transmitter is detected. In this device, a multiplex count determination unit (101) determines the number of streams used by the device itself from the same number of candidates as the number of spatially multiplexed streams. A sequence group generator (104) forms a plurality of preamble sequences into the same number of groups as the number of candidates, which is the number of streams. A sequence group selector (105) selects the group matching the number of streams determined by the multiplex count determination unit (101) from a plurality of groups. A preamble generator (106) selects the same number of preamble sequences as the number of streams in the group selected by the sequence group selector (105) and generates the preamble sequence used by the device itself.
    • 提供一种当检测到从无线发射机的任何天线发送的前导码序列时,能够精确地指定多路复用流的数量并正确解码数据信号的无线发射机。 在该装置中,多路复用计数确定单元(101)从与空间多路复用流数相同的候选数量确定装置本身使用的流数。 序列组生成器(104)形成与作为流的数量的候选数相同数量的组的多个前同步码序列。 序列组选择器(105)从多个组中选择与由多路复用计数确定单元(101)确定的流数相匹配的组。 前导码生成器(106)选择与由序列组选择器(105)选择的组中的流的数量相同数量的前同步码序列,并生成由设备本身使用的前同步码序列。
    • 80. 发明授权
    • Terminal device and interference removal method
    • 端子装置和干扰去除方法
    • US08681686B2
    • 2014-03-25
    • US13574980
    • 2011-01-28
    • Yoshiko SaitoKenichi MiyoshiDaichi ImamuraYasuaki Yuda
    • Yoshiko SaitoKenichi MiyoshiDaichi ImamuraYasuaki Yuda
    • H04B7/14
    • H04W72/082H04B7/2606H04L1/0003H04L1/0009H04W84/047
    • When a terminal (200) is capable of connecting to two relay devices that are adjacent to the terminal, from among a plurality of relay devices, a receiving unit (208) receives signals in a first period and a second period for communication among the plurality of relay stations, which are transmitted from the higher order device to the lower order device toward other terminal devices. An interference removal unit (209) obtains a signal transmitted toward the terminal (200) from the higher order relay device by employing the signals toward the other terminal devices that are received in the first period and the second period and removing a signal toward other terminal devices that is transmitted in a third period for communication between the plurality of relay devices and the terminal device from the lower order device from a signal that is received in the third period.
    • 当终端(200)能够连接到与终端相邻的两个中继设备时,从多个中继设备中,接收单元(208)在第一周期和第二周期中接收多个中继设备之间的通信信号 的中继站,其从高阶设备向低阶设备发送到其他终端设备。 干扰去除单元(209)通过在第一周期和第二周期中接收到的其他终端设备的信号获得从高阶中继设备向终端(200)发送的信号,并且去除朝向其他终端的信号 在第三时段中从在第三时段接收到的信号中在多个中继设备和来自低级设备的终端设备之间进行通信的设备。