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公开(公告)号：US08000379B2
公开(公告)日：2011-08-16
申请号：US11917792
申请日：2006-06-30
申请人： Takaaki Kishigami , Hiroshi Iwai
发明人： Takaaki Kishigami , Hiroshi Iwai
IPC分类号： H04B1/00
CPC分类号： H04B1/18 , H04B1/0458 , H04B2201/70701
摘要： An object of the invention is to stabilize the convergence operation at the automatic impedance matching time and ensure the reception quality in the convergence process in a fading environment in a radio communication apparatus which performs automatic impedance matching between an antenna and a Radio frequency section to decrease the impedance matching loss, for example, when the apparatus is brought close to a human body. A radio communication apparatus of the invention includes a Radio frequency section 3 which converts a received signal into a baseband signal, a variable impedance unit 2 which adjusts impedance between an antenna 1 and the Radio frequency section 3, a pilot signal extraction unit 4 which extracts a pilot signal from the baseband signal, a first channel compensation unit 5 which performs channel compensation using an output of the pilot signal extraction unit, an impedance control adequacy detection unit 7 which detects impedance control adequacy using an output of the first channel compensation unit, an impedance control unit 8 which controls the variable impedance unit 2 using an output of the impedance control adequacy detection unit, a second channel compensation unit 6 which performs channel compensation using the pilot signal, and a demodulation section 9 which performs the demodulation operation using an output of the second channel compensation unit.
摘要翻译： 本发明的一个目的是在自动阻抗匹配时间稳定收敛操作，并且确保在天线和射频部分之间进行自动阻抗匹配的无线电通信装置的衰落环境中的收敛过程中的接收质量降低 阻抗匹配损失，例如当该装置靠近人体时。 本发明的无线通信装置具有将接收信号转换为基带信号的射频部3，调整天线1与射频部3之间的阻抗的可变阻抗部2，提取出导频信号提取部4 来自基带信号的导频信号，使用导频信号提取单元的输出进行信道补偿的第一信道补偿单元5，使用第一信道补偿单元的输出来检测阻抗控制充分性的阻抗控制适合度检测单元7， 阻抗控制单元8，其使用阻抗控制充分性检测单元的输出来控制可变阻抗单元2;第二信道补偿单元6，其使用导频信号进行信道补偿;以及解调单元9，其使用 输出第二通道补偿单元。
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62.发明申请WIRELESS TRANSMISSION DEVICE, WIRELESS RECEIVING DEVICE, AND METHOD FOR TRANSMITTING ENCODED DATA 有权无线传输设备，无线接收设备和传输编码数据的方法公开(公告)号：US20110197106A1
公开(公告)日：2011-08-11
申请号：US13123860
申请日：2009-10-22
申请人： Takaaki Kishigami , Isamu Yoshii
发明人： Takaaki Kishigami , Isamu Yoshii
CPC分类号： H03M13/09 , H03M13/1102 , H03M13/15 , H03M13/1515 , H03M13/2906 , H03M13/293 , H03M13/356 , H03M13/373 , H03M13/6356 , H03M13/6362 , H04L1/0009 , H04L1/0026 , H04L1/0042 , H04L1/0053 , H04L1/0061 , H04L5/003 , H04L5/0053 , H04W4/06
摘要： Disclosed are a wireless transmission device, wireless receiving device, and method for transmitting encoded data with which power consumption can be reduced at the receiving end in accordance with reception conditions, while resource-saving is maintained by employing an erasure correcting code (ECC). In a wireless communication device (100), an erasure correction encoding unit (110) performs erasure correction encoding (ECC) of the transmission data and an error correction encoding unit (145) performs encoding, using an error correction encoding system other than the erasure correction encoding, of other copied transmission data from the transmission data and the ECC parity bits obtained by the erasure correction encoding unit (110), respectively independently, and a transmission unit (165) in the error correction encoding unit (145) transmits as information bits only systematic bits obtained from the other transmission data and, in the error correction encoding unit (145), transmits as parity bits the encoding results obtained from the other transmission data and. ECC parity bits.
摘要翻译： 公开了一种无线传输装置，无线接收装置和方法，用于根据接收条件发送在接收端能够降低功耗的编码数据，同时通过采用擦除校正码（ECC）来维护资源节省。 在无线通信装置（100）中，消失校正编码单元（110）进行发送数据的消失校正编码（ECC），误差校正编码单元（145）使用除了擦除以外的纠错编码系统进行编码 分别独立地对来自发送数据的其他复制发送数据和由纠错编码单元（110）获得的ECC奇偶校验位进行校正编码，并且纠错编码单元（145）中的发送单元（165）作为信息发送 只有从其他传输数据获得的系统位，并且在纠错编码单元（145）中，作为奇偶校验位发送从其他传输数据获得的编码结果。 ECC奇偶校验位。
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公开(公告)号：US20110181471A1
公开(公告)日：2011-07-28
申请号：US13079415
申请日：2011-04-04
IPC分类号： G01S3/14
CPC分类号： G01S3/043 , G01S3/14 , H04B7/086 , H04L27/2601
摘要： A device for estimating a direction-of-arrival of a radio wave, the device comprising an array antenna including a plurality of antenna elements for receiving a high frequency signal, a demultiplexer for demultiplexing the received high frequency signal for each of the plurality of antenna elements to generate a plurality of frequency component signals and a direction estimating unit for estimating the direction-of-arrival of the radio wave by using two or more of the plurality of frequency component signals which are contiguous in a frequency direction.
摘要翻译： 一种用于估计无线电波的到达方向的装置，该装置包括：阵列天线，包括用于接收高频信号的多个天线元件;解复用器，用于对接收到的多个天线中的每个天线的高频信号进行解复用 用于生成多个频率分量信号的单元;以及方向估计单元，用于通过使用在频率方向上连续的多个频率分量信号中的两个或更多个来估计无线电波的到达方向。
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公开(公告)号：US20110041044A1
公开(公告)日：2011-02-17
申请号：US12937366
申请日：2009-07-06
CPC分类号： H03M13/1154 , H03M13/116 , H03M13/13 , H03M13/235 , H03M13/616 , H03M13/617 , H03M13/6306 , H03M13/635 , H03M13/6356 , H03M13/6516 , H03M13/6527 , H04B3/542 , H04L1/0041 , H04L1/0058
摘要： An encoder and decoder using LDPC-CC (Low Density Parity Check-Convolutional Codes) is disclosed. The encoder exhibits encoding rates realized with a small circuit-scale and a high data reception quality. In the encoder (200), an encoding rate setting unit (250) sets an encoding rate (s−1)/s (s=z), and an information creating unit (210) sets information including from information Xs,i to information Xz−1,i to zero. A first information computing unit (220-1) receives information X1,i at time point i to compute the X1(D) term of formula (1). A second information computing unit (220-2) receives information X2,i at time point i to compute the X2(D) term of formula (1). A third information computing unit (220-3) receives information X3,i at time point i to compute the X3(D) term of formula (1). A parity computing unit (230) receives parity Pi−1 at time point i−1 to compute the P(D) of formula (1). The exclusive OR of the results of the computation is obtained as parity Pi at time i. Ax.
摘要翻译： 公开了一种使用LDPC-CC（低密度奇偶校验卷积码）的编码器和解码器。 编码器表现出具有小电路规模和高数据接收质量实现的编码速率。 在编码器（200）中，编码率设定部（250）设定编码率（s-1）/ s（s = z），信息生成部210将信息Xs，i， Xz-1，我为零。 第一信息计算单元（220-1）在时间点i接收信息X1，i，以计算公式（1）的X1（D）项。 第二信息计算单元（220-2）在时间点i接收信息X2，i，以计算公式（1）的X2（D）项。 第三信息计算单元（220-3）在时间点i接收信息X3，i，以计算公式（1）的X3（D）项。 奇偶校验计算单元（230）在时间点i-1处接收奇偶校验Pi-1以计算公式（1）的P（D）。 计算结果的异或获得为时间i的奇偶校验Pi。 斧头。
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65.发明申请公开(公告)号：US20100323625A1
公开(公告)日：2010-12-23
申请号：US12866014
申请日：2009-02-05
申请人： Takaaki Kishigami , Shozo Okasaka
发明人： Takaaki Kishigami , Shozo Okasaka
IPC分类号： H04B1/10
CPC分类号： H04B7/0452 , H04B7/026 , H04B7/0434 , H04B7/0697 , H04L25/0228 , H04L25/03343 , H04L2025/03426 , H04L2025/03783 , H04L2025/03802 , H04W72/005
摘要： A base station device (10) communicates between a first terminal device and a second terminal device over the same channel by spatial multiplexing. The base station device (10) comprises an interference cancellation coefficient extractor (30) that extracts an interference cancellation coefficient from a signal received from the first terminal device to cancel interference on a propagation channel with the first terminal device in advance, and transmits a pilot signal that contains information related to the interference cancellation coefficient to the second terminal device. In addition, the base station device (10) also comprises an interference canceller (16) that uses the interference cancellation coefficient to cancel an interference component from transmission data to be transmitted over the same channel, and transmits the transmission data from which the interference component has been canceled by the interference canceller (16) to the first terminal device and the second terminal device over the same channel. A wireless communication system is provided which, in a multi-user MIMO, suppresses superimposed interference components resulting from channel fluctuations and channel estimation errors when interference cancellation is performed in advance in a base station unit on a modulated signal to be transmitted.
摘要翻译： 基站装置（10）通过空间复用在同一信道上在第一终端装置和第二终端装置之间进行通信。 基站装置（10）包括干扰消除系数提取器（30），其从预先从第一终端装置接收到的信号中提取干扰消除系数，以预先消除与第一终端装置的传播信道的干扰，并发送导频 信号，其包含与第二终端装置的干扰消除系数有关的信息。 此外，基站装置（10）还包括使用干扰消除系数从通过同一信道发送的发送数据消除干扰成分的干扰消除器（16），并且发送干扰消除器 被干扰消除器（16）已经通过同一信道被取消到第一终端设备和第二终端设备。 提供了一种无线通信系统，其在多用户MIMO中抑制由信道波动和信道估计误差引起的叠加干扰成分，当干扰消除在基站单元中预先在要发送的调制信号上执行时。
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公开(公告)号：US20100205511A1
公开(公告)日：2010-08-12
申请号：US12679740
申请日：2008-09-26
CPC分类号： H03M13/1154 , H03M13/1102 , H03M13/118 , H03M13/23 , H03M13/235 , H03M13/6362 , H04L1/0041
摘要： A low-density parity check convolution code (LDPC-CC) is made, and a signal sequence is sent after subjected to an error-correcting encodement using the low-density parity check convolution code. In this case, a low-density parity check code of a time-variant period (3g) is created by linear operations of first to 3g-th (letter g designates a positive integer) parity check polynomials and input data.
摘要翻译： 进行低密度奇偶校验卷积码（LDPC-CC），并且在使用低密度奇偶校验卷积码进行纠错编码之后发送信号序列。 在这种情况下，通过第一至第3g（字母g表示正整数）奇偶校验多项式和输入数据的线性运算，创建时变周期（3g）的低密度奇偶校验码。
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公开(公告)号：US07593317B2
公开(公告)日：2009-09-22
申请号：US10503010
申请日：2003-08-01
IPC分类号： H04J11/00
CPC分类号： H01Q3/2605 , H01Q3/267 , H04B7/0617 , H04B7/086 , H04B17/10 , H04B17/12 , H04B17/18 , H04B17/20 , H04B17/21 , H04L1/06 , H04L27/2602 , H04L27/2626 , H04L27/2647
摘要： A transmission weight computing section computes a transmission weight for directional transmission using an OFDM signal. A transmission correcting value memory section stores one correcting value for correcting the transmission weight for each sub-carrier of an OFDM signal or each band gathering a plurality of sub-carriers. A transmission weight correcting section corrects the transmission weight by the correcting value. A transmitting branch weights transmission data by a transmission weight outputted from the transmission weight correcting section on a sub-carrier-by-sub-carrier basis and delivers it to an antenna.
摘要翻译： 传输权重计算部分使用OFDM信号来计算定向传输的传输权重。 发送校正值存储部存储用于校正OFDM信号的每个子载波的发送权重或收集多个子载波的每个频带的一个校正值。 发送权重校正部通过校正值来校正发送权重。 发送分支通过从子载波子载波基础上从发送加权校正部分输出的发送权重对发送数据进行加权，并将其发送到天线。
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公开(公告)号：US20090175367A1
公开(公告)日：2009-07-09
申请号：US12159080
申请日：2007-01-05
申请人： Takaaki Kishigami , Hidekuni Yomo
发明人： Takaaki Kishigami , Hidekuni Yomo
CPC分类号： H04L27/2657 , H04B7/084 , H04L27/2675 , H04L27/2695
摘要： A wireless communication device (1) comprises a spatially-multiplexed PSC extracting section (8) for extracting a spatially multiplexed known pilot subcarrier signal (S5) from the received multicarrier-modulated signal, a reference signal generating section (7) for generating a reference signal (S4) of the spatially-multiplexed pilot subcarrier signal, and a phase compensating section (9) for compensating the phase difference of the received signal (S1) according to the pilot subcarrier signal (S5) extracted by the spatially-multiplexed pilot subcarrier extracting section (8) and the reference signal (S4). Therefore, even if a pilot subcarrier signal is spatially multiplexed and transmitted, phase difference detection and phase compensation can be performed by a simple constitution.
摘要翻译： 一种无线通信装置（1）包括：空间复用PSC提取部（8），用于从所接收的多载波调制信号中提取空间多路化的已知导频子载波信号（S5）;参考信号生成部（7），用于生成参考 信号（S4），以及根据由空间复用导频子载波提取的导频子载波信号（S5）来补偿接收信号（S1）的相位差的相位补偿部（9） 提取部分（8）和参考信号（S4）。 因此，即使导频副载波信号被空间复用并发送，也可以通过简单的结构进行相位差检测和相位补偿。
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公开(公告)号：US07333056B2
公开(公告)日：2008-02-19
申请号：US10524253
申请日：2003-09-26
IPC分类号： G01S5/02
CPC分类号： G01S3/043 , G01S3/14 , H04B7/086 , H04L27/2601
摘要： An adaptive antenna radio communication device comprises a divided band direction estimating unit (4) for estimating the direction by calculating the cross correlations between a pilot signal and sub-carrier signals of the respective divided bands received by an array antenna (1) and calculating a spatial profile from correlation matrices determined by combining the correlation values between antenna elements of the different sub-carriers according to the output of the cross correlation calculation; a divided band array weight creating unit (5) for creating a weight of a receive array having a directional beam in the direction of estimation for each divided band; and a sub-carrier directivity creating unit (6) for creating a directivity by multiplication-combining the created receive array weight with the corresponding sub-carrier signal.
摘要翻译： 一种自适应天线无线电通信装置包括：分频带方向估计单元，用于通过计算由阵列天线（1）接收的各个分频带的导频信号和副载波信号之间的互相关，来估计方向，并计算 通过根据互相关计算的输出组合不同子载波的天线元件之间的相关值确定的相关矩阵的空间分布; 分割带阵列权重创建单元（5），用于在每个分割频带的方向上产生具有定向波束的接收阵列的权重; 以及子载波方向性创建单元（6），用于通过将创建的接收阵列权重与相应的副载波信号相乘合成来产生方向性。
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公开(公告)号：US06642888B2
公开(公告)日：2003-11-04
申请号：US10020477
申请日：2001-12-12
IPC分类号： G01S502
CPC分类号： G06K9/0057 , G01S3/74
摘要： A radio-wave arrival-direction apparatus calculates a correlation matrix of received signals by correlation calculation between antenna elements, and calculates a noise spatial eigenmatrix, of which each row or column is an eigenvector belonging to a noise eigen-space, by eigenvalue factorization of the correlation matrix. The apparatus also factorizes a matrix including a product of the noise spatial eigenmatrix and a conjugated and transposed matrix of it to an upper or lower triangular matrix, using cholesky factorization. The apparatus calculates an angle evaluation value in a predetermined angle range of an arrival-angle evaluation function using the derived upper or lower triangular matrix, and determines an arrival angle based on the calculation result. A calculation amount in a variable angle range can be thus reduced without causing accuracy degradation of arrival direction, in an algorism requiring an angle sweep for arrival angle estimation of MUSIC method or the like.
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