PILOT TRANSMISSION METHOD, MIMO TRANSMISSION DEVICE, MIMO RECEPTION DEVICE WHICH PERFORMS COMMUNICATION WITH MIMO TRANSMISSION DEVICE
    61.
    发明申请
    PILOT TRANSMISSION METHOD, MIMO TRANSMISSION DEVICE, MIMO RECEPTION DEVICE WHICH PERFORMS COMMUNICATION WITH MIMO TRANSMISSION DEVICE 审中-公开
    导频传输方法,MIMO传输设备,MIMO接收设备,其利用MIMO传输设备进行通信

    公开(公告)号:US20100260235A1

    公开(公告)日:2010-10-14

    申请号:US12746466

    申请日:2008-12-10

    IPC分类号: H04B1/707

    摘要: It is possible to provide a novel pilot transmission method which can calculate an accurate channel estimation value, a MIMO transmission device using the pilot transmission method, and a MIMO reception device which performs communication with the MIMO transmission device. The MIMO transmission device (100) includes a cyclic shift processing unit (150) which cyclically shifts a first pilot signal sequence spread by a spread code 1 and second pilot signal sequence spread by a spread code 2 with different shift amounts. The first pilot signal sequence and the second pilot signal sequence which have been cyclically shifted are transmitted from different transmitting antennas at the same pilot transmission symbol section. Thus, by changing the shift amount of the cyclic shift process executed on each pilot signal sequence spread by the respective spread codes, it is possible to improve the pilot separation accuracy at a reception side. This enables more accurate calculation of a channel estimation value.

    摘要翻译: 可以提供一种可以计算准确的信道估计值的新型导频传输方法,使用导频传输方法的MIMO传输装置,以及与MIMO传输装置进行通信的MIMO接收装置。 MIMO传输装置(100)包括循环移位处理单元(150),循环移位处理单元(150),循环移位由扩频码扩展的第一导频信号序列和以扩频码扩展的第二导频信号序列。 已经循环移位的第一导频信号序列和第二导频信号序列在相同的导频传输符号部分从不同的发射天线发射。 因此,通过改变对各扩频码扩频的每个导频信号序列执行的循环移位处理的移位量,可以提高接收端的导频分离精度。 这使得能够更准确地计算信道估计值。

    Wireless communication apparatus and wireless communication method
    62.
    发明授权
    Wireless communication apparatus and wireless communication method 有权
    无线通信装置和无线通信方法

    公开(公告)号:US07729443B2

    公开(公告)日:2010-06-01

    申请号:US11722831

    申请日:2005-12-26

    IPC分类号: H04L27/00 H04L23/00

    摘要: A wireless communication method of repetition system and the like for ensuring that when the same data symbols are combined, a diversity gain is achieved. In a step (ST 420), a data symbol placing part (105) decides destination places of respective replicated data symbols (S1-S4) such that the same data symbols are not placed at destination place numbers (7,8) of data symbols that exhibit poor channel estimation precisions. In a step (ST 430), the data symbol placing part (105) places, in accordance with the decision in the foregoing step (ST 420), the four data symbols (S1-S4), which are received from a repetition part (102), in one frame received from a channel estimation error predicting part (104).

    摘要翻译: 一种用于确保当相同的数据符号被组合时的重复系统等的无线通信方法,实现了分集增益。 在步骤(ST 420)中,数据符号放置部(105)决定各个复制数据符号(S1-S4)的目的地位置,使得相同的数据符号不被放置在数据符号的目的地地点号码(7,8) 表现出较差的信道估计精度。 在步骤(ST430)中,数据符号放置部(105)根据上述步骤(ST420)的判定,设置从重复部分接收的四个数据符号(S1〜S4) 102),在从信道估计误差预测部(104)接收的一帧中。

    WIRELESS COMMUNICATION METHOD, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION DEVICE
    63.
    发明申请
    WIRELESS COMMUNICATION METHOD, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION DEVICE 审中-公开
    无线通信方法,无线通信系统和无线通信设备

    公开(公告)号:US20090268835A1

    公开(公告)日:2009-10-29

    申请号:US11910178

    申请日:2006-03-30

    IPC分类号: H04B7/02

    摘要: A wireless communication method realizing a large channel capacity even in an environment of high spatial correlation and improving the reception characteristic, a wireless communication system, and a wireless communication device. Signals (X1, X2) are transmitted between antennas (201-1, 201-2) of a base station (200) and antennas (222-1, 222-2) of a mobile station by a space division multiplexing (SDM) system. On the base station (200) side, if channel information estimated by a channel estimating section (204) is known, a weight calculating section (205) calculates a weight, the transmission signal is multiplied by the weight, and diversity transmission from an antenna (201-3) of the base station (200) is carried out. On the mobile station (220) side, the signal transmitted from the base station (200) is received, a signal separating section (203) carries out signal separation of received signals (Y1, Y2), and thereby the transmitted signals (X1, X2) are restored.

    摘要翻译: 无线通信方法即使在高空间相关性和接收特性的改善的环境中也能实现大的信道容量,无线通信系统和无线通信装置。 信号(X1,X2)通过空分复用(SDM)系统在基站(200)的天线(201-1,201-2)和移动台的天线(222-1,222-2)之间进行发送 。 在基站(200)侧,如果信道估计部(204)估计的信道信息是已知的,则权重计算部(205)计算权重,发送信号乘以权重,以及来自天线的分集发送 (200)的(201-3)。 在移动台(220)侧接收从基站(200)发送的信号,信号分离部(203)对接收到的信号(Y1,Y2)进行信号分离,由此发送信号(X1, X2)被恢复。

    RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION METHOD
    64.
    发明申请
    RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION METHOD 有权
    无线电通信设备和无线电通信方法

    公开(公告)号:US20090130975A1

    公开(公告)日:2009-05-21

    申请号:US12282331

    申请日:2007-03-29

    IPC分类号: H04B17/02

    摘要: Provided is a mobile communication system capable of obtaining a diversity effect even when a signal received by a relay station has an error in a corporate relay to which time space encoding is applied. In this mobile communication system, when S1 has no error and S2 has an error, a relay station (1) does not perform relay transmission at time t (Null) and relay-transmits S1* to a base station at time t+T. That is, in this case, the relay station (1) relay-transmits at time t+T only S1 to be transmitted at time t when no error is contained in either S1 or S2. Moreover, when S1 has an error and S2 has no error, the relay station (1) relay-transmits S2 at time t and does not perform relay transmission at time t+T (Null). That is, in this case, the relay station (1) relay-transmits only S2 to be transmitted at time t+T at time t if no error is contained in either S1 or S2.

    摘要翻译: 提供了即使当中继站接收的信号在应用了时间空间编码的公司中继中具有错误时,也能够获得分集效应的移动通信系统。 在该移动通信系统中,当S1没有错误且S2有错误时,中继站(1)在时刻t(Null)不执行中继传输,并且在时刻t + T向基站中继发送S1 *。 也就是说,在这种情况下,中继站(1)在时刻t + T仅中继 - 在S1或S2中不包含错误的情况下,在时间t发送要发送的S1。 此外,当S1发生错误且S2没有错误时,中继站(1)在时刻t中继发送S2,在时刻t + T(Null)不进行中继发送。 也就是说,在这种情况下,如果在S1或S2中没有包含错误,则中继站(1)在时间t仅中继仅发送在时间t + T发送的S2。

    RADIO TRANSMITTING APPARATUS, RADIO RECEIVING APPARATUS, WIRELESS COMMUNICATION METHOD, AND WIRELESS COMMUNICATION SYSTEM
    65.
    发明申请
    RADIO TRANSMITTING APPARATUS, RADIO RECEIVING APPARATUS, WIRELESS COMMUNICATION METHOD, AND WIRELESS COMMUNICATION SYSTEM 审中-公开
    无线电发射装置,无线接收装置,无线通信方法和无线通信系统

    公开(公告)号:US20090124210A1

    公开(公告)日:2009-05-14

    申请号:US12091901

    申请日:2006-11-02

    IPC分类号: H04B7/02 H04B7/00

    摘要: A radio transmitting apparatus, a radio receiving apparatus, a wireless communication method and a wireless communication system wherein even when a channel correlation is large, the channel capacity and the feedback amount can be improved. In ST401, a receiving apparatus (200) determines that the channel correlation value exceeds a predetermined threshold value. In ST402, a transmitting apparatus (100) is instructed to perform 42 MIMO transmission. In ST403, the transmitting apparatus (100) determines a pair of antennas exhibiting the highest channel correlation. In ST406, the receiving apparatus (200) uses, based on the pair information, a channel matrix, which comprises channel estimation values, to calculate a delay shift amount. In ST407, the delay shift amount is fed back to the transmitting apparatus (100). In ST408, the transmitting apparatus (100) uses the pair information and delay shift amount to combine SDM and a cyclic sample delay diversity, thereby transmitting data.

    摘要翻译: 一种无线发送装置,无线接收装置,无线通信方法以及无线通信系统,其中即使信道相关性大,也可以提高信道容量和反馈量。 在ST401中,接收装置(200)确定信道相关值超过预定阈值。 在ST402中,指示发送装置(100)进行42 MIMO发送。 在ST403中,发送装置(100)确定呈现最高信道相关性的一对天线。 在ST406中,接收装置(200)基于配对信息,使用包含信道估计值的信道矩阵来计算延迟偏移量。 在ST407中,将延迟偏移量反馈给发送装置(100)。 在ST408中,发送装置(100)使用配对信息和延迟移位量来组合SDM和循环采样延迟分集,从而发送数据。

    TRANSMITTER, RECEIVER, AND COMMUNICATION METHOD
    66.
    发明申请
    TRANSMITTER, RECEIVER, AND COMMUNICATION METHOD 审中-公开
    发射机,接收机和通信方法

    公开(公告)号:US20090116571A1

    公开(公告)日:2009-05-07

    申请号:US11994112

    申请日:2006-06-28

    IPC分类号: H04L5/12 H04L27/28

    摘要: A transmitter, a receiver and a communication method enabling improvement of the data rate of an MIMO system. One signal x2 out of the three signals is combined with the other two signals x1, x3 respectively to generate two combined signals x1+x2, x2+x3. The combined signals are transmitted through transmission antennas (102, 103). A signal separating section (106) of the receiver separates the received signals r1, r2 into two signals y1, y2 by a signal separation processing such as the ZF. An MLD processing section (107) generates MLD evaluation formulae using y1, y2 and performs an MLD processing in which x2 is cancelled from y1, y2 and evaluation formulae about x1, x3 are generated, and a maximum likelihood estimation is performed. As a result of the MLD processing, x1, x3 are detected. In a canceling section (108) the detected x1, x3 are canceled from y1, y2, and x2 is detected.

    摘要翻译: 一种发射机,接收机和能够改善MIMO系统的数据速率的通信方法。 三个信号中的一个信号x2分别与其他两个信号x1,x3组合以产生两个组合信号x1 + x2,x2 + x3。 组合的信号通过发射天线(102,103)传输。 接收机的信号分离部分(106)通过诸如ZF的信号分离处理将接收信号r1,r2分成两个信号y1,y2。 MLD处理部(107)使用y1,y2生成MLD评价公式,并且执行从y1,y2取消x2的MLD处理,并且生成关于x1,x3的评估公式,并且执行最大似然估计。 作为MLD处理的结果,检测到x1,x3。 在取消部(108)中,从y1,y2取消检测出的x1,x3,检测出x2。

    RETRANSMISSION CONTROL SCHEME AND WIRELESS COMMUNICATION APPARATUS
    67.
    发明申请
    RETRANSMISSION CONTROL SCHEME AND WIRELESS COMMUNICATION APPARATUS 有权
    重新设计控制方案和无线通信装置

    公开(公告)号:US20090031183A1

    公开(公告)日:2009-01-29

    申请号:US11816885

    申请日:2006-02-27

    IPC分类号: H04L1/18 G06F11/14

    摘要: A retransmission control scheme and a wireless communication apparatus wherein the efficiency of retransmission control is enhanced to further improve the system throughput. In this wireless communication apparatus (100), an error occurrence factor addressing part (140) receives information related to the error occurrence factor of a transmitted packet or information related to the schemes of forming or transmitting a retransmittal packet corresponding to that error occurrence factor, and switches, based on the received information, the schemes of forming or transmitting the retransmittal packet. In this way, the schemes of forming or transmitting the retransmittal packet can be switched in accordance with the error occurrence factor of the transmitted packet. At the end of receiving the retransmittal packet, therefore, the performing of a decoding processor the like in accordance with that scheme of forming or transmitting can enhance the efficiency of the retransmission control. As a result, the system throughput can be improved.

    摘要翻译: 一种重传控制方案和一种无线通信装置,其中提高了重传控制的效率以进一步提高系统吞吐量。 在该无线通信装置(100)中,错误发生因子寻址部(140)接收与所发送的分组的错误发生因子相关的信息或与形成或发送对应于该错误发生因子的重传分组的方案有关的信息, 并且基于所接收的信息来切换形成或发送重传分组的方案。 以这种方式,可以根据发送的分组的错误发生因素来切换形成或发送重传分组的方案。 因此,在接收到重传分组的结束时,根据该形成或发送方案执行解码处理器等可以提高重传控制的效率。 结果,可以提高系统吞吐量。

    Wireless Communication Apparatus and Wireless Communication Method
    68.
    发明申请
    Wireless Communication Apparatus and Wireless Communication Method 审中-公开
    无线通信装置和无线通信方法

    公开(公告)号:US20080304658A1

    公开(公告)日:2008-12-11

    申请号:US11658256

    申请日:2005-07-07

    IPC分类号: H04L9/06

    摘要: An inventive wireless communication apparatus that, in a wireless communication system to which a secret key scheme is applied, can generate a secret key, which is different from a secret key generated by a third party, even if a wireless signal is intercepted by the third part having an approximate propagation path environment to a receiving wireless communication apparatus. In the inventive apparatus, an eigenvalue selecting part (317) of a secret key generating part (207) selects a maximum one of MIMO channel eigenvalues received from an eigenvalue detecting part (206) and inputs the selected maximum eigenvalue to a quantizing part (327). The quantizing part (327) quantizes the magnitude of the maximum eigenvalue received from the eigenvalue selecting part (317) to produce and input a quantized data to a key generating part (337). The key generating part (337) uses a predetermined scheme to generate a secret key from the quantized data received from the quantizing part (327), and inputs the generated secret key to a control part or the like not shown.

    摘要翻译: 一种创造性的无线通信装置,在应用了秘密密钥方案的无线通信系统中,即使无线信号被第三方拦截,也可以生成与第三方生成的秘密密钥不同的秘密密钥 部分具有到接收无线通信装置的近似传播路径环境。 在本发明的装置中,秘密密钥生成部(207)的特征值选择部(317)选择从特征值检测部(206)接收到的最大一个MIMO信道特征值,并将所选择的最大特征值输入到量化部(327 )。 量化部分(327)量化从特征值选择部分(317)接收的最大特征值的幅度,以产生量化数据并将其输入到密钥产生部分(337)。 密钥产生部分(337)使用预定方案从量化部分(327)接收到的量化数据生成秘密密钥,并将生成的秘密密钥输入到未示出的控制部分等。

    Radio Communication Device, Radio Communication System, and Radio Communication Method
    69.
    发明申请
    Radio Communication Device, Radio Communication System, and Radio Communication Method 审中-公开
    无线电通信装置,无线电通信系统和无线电通信方法

    公开(公告)号:US20080069251A1

    公开(公告)日:2008-03-20

    申请号:US11573057

    申请日:2005-07-08

    IPC分类号: H04B1/66

    CPC分类号: H04B7/0413 H04L9/0875

    摘要: There is disclosed a radio communication device capable of preventing wire-tap of an encrypted communication even if a radio signal is wire-tapped by a third person in a radio communication system using the MIMO technique. In this device, an inter-channel correlation calculation unit (104) calculates an inter-channel correlation value between two channels in the MIMO channel according to four channel estimation values inputted from a channel estimation unit (103). The six channel correlation values calculated are all inputted to a channel selection unit (105). The channel selection unit (105) selects a minimum channel correlation value from the six channel correlation values inputted from the inter-channel correlation calculation unit (104) and reports two channels corresponding to the selected channel correlation value to an inter-channel correlation monitoring unit (110) and inputs the channel estimation value of the two channels to a secret key generation unit (106).

    摘要翻译: 公开了一种无线电通信装置,即使在使用MIMO技术的无线电通信系统中无线电信号由第三人员进行有线窃取,也能够防止加密通信的窃听。 在该装置中,信道间相关计算部(104)根据从信道估计部(103)输入的四个信道估计值,计算MIMO信道中的两个信道之间的信道间相关值。 计算出的六通道相关值全部输入到通道选择单元(105)。 信道选择单元(105)从信道间相关计算单元(104)输入的六信道相关值中选择最小信道相关值,并将与选择的信道相关值对应的两个信道报告给信道间相关监视单元 (110),并将两个信道的信道估计值输入到密钥生成单元(106)。