公开(公告)号：US07668265B2

公开(公告)日：2010-02-23

申请号：US11173840

申请日：2005-07-01

申请人： Jaiganesh Balakrishnan ,  Hirohisa Yamaguchi

发明人： Jaiganesh Balakrishnan ,  Hirohisa Yamaguchi

IPC分类号： H03D1/04

CPC分类号： H04L27/2613 ,  H04B1/719 ,  H04L25/03828 ,  H04L27/2626

摘要： A method of wirelessly communicating is disclosed. The method comprises determining a matrix W based in part on limiting a plurality of active interference cancellation tone values (416), determining the active interference cancellation tone values (416) based on W and based on a plurality of information data values (410), and transmitting an orthogonal frequency division multiplex signal (310) based on the plurality of active interference cancellation tone values (416) and the information data values (410).

摘要翻译： 公开了一种无线通信的方法。 该方法包括：基于限制多个主动干扰消除音调值（416），基于W并基于多个信息数据值（410）确定主动干扰消除音调值（416）来确定矩阵W， 以及基于所述多个有源干扰消除音调值（416）和所述信息数据值（410）发送正交频分复用信号（310）。

公开(公告)号：US08472555B2

公开(公告)日：2013-06-25

申请号：US12636917

申请日：2009-12-14

申请人： Jaiganesh Balakrishnan ,  Hirohisa Yamaguchi

发明人： Jaiganesh Balakrishnan ,  Hirohisa Yamaguchi

IPC分类号： H04L25/03

CPC分类号： H04L27/2613 ,  H04B1/719 ,  H04L25/03828 ,  H04L27/2626

摘要： A transmitter and communication system are disclosed. A first component operable to determine an active interference cancellation value for each of a plurality of active interference cancellation tones and a protection-edge value for each of a plurality of protection-edge tones based on optimizing active interference cancellation, and further based on constraining an average power of the active interference cancellation values and the protection-edge values to less than or equal to a maximum power level, and on a plurality of data values. A second component is operable to transform a sequence of tones to a time domain signal, the sequence of tones comprised of the active interference cancellation tones, the protection-edge tones, and a plurality of data tones, the data tones containing the data values. A third component operable to transmit an orthogonal frequency division multiplex signal based on the time domain signal.

摘要翻译： 公开了一种发射机和通信系统。 第一组件，其可操作以基于优化主动干扰消除来确定多个有源干扰消除音调中的每一个的主动干扰消除值和针对多个保护边缘音调中的每一个的保护边缘值，并且还基于约束 主动干扰消除值和保护边缘值的平均功率小于或等于最大功率电平，以及多个数据值。 第二组件可操作以将音调序列变换为时域信号，由主动干扰消除音调组成的音调序列，保护边缘音调和多个数据音调，数据音调包含数据值。 第三组件，用于基于时域信号发送正交频分复用信号。

公开(公告)号：US20060008017A1

公开(公告)日：2006-01-12

申请号：US11174401

申请日：2005-07-01

申请人： Jaiganesh Balakrishnan ,  Anuj Batra ,  Hirohisa Yamaguchi

发明人： Jaiganesh Balakrishnan ,  Anuj Batra ,  Hirohisa Yamaguchi

IPC分类号： H04K1/10

CPC分类号： H04L27/2613 ,  H04B1/719 ,  H04L25/03828 ,  H04L27/2626

摘要： A method of wirelessly communicating is disclosed. The method comprises generating a plurality of tones for a wideband orthogonal frequency division multiplex symbol (310), the tones including a plurality of contiguous zero-valued tones, inverse Fourier transforming the tones to a plurality of time-domain samples (312), copying a plurality of the time-domain samples as a portion of a cyclic block (314), the cyclic block (314) contiguous with the time-domain samples (312), time-domain window filtering the time-domain samples (312) and the cyclic block (314) to form a portion of the wideband orthogonal frequency division multiplex symbol (310), wherein the time-domain window filter (350) is a function φ(k) having the property that φ(k)+φ(k+Nfft) is about equal to a constant θ where Nfft is the number of tones, and transmitting the wideband orthogonal frequency division multiplex symbol (310).

摘要翻译： 公开了一种无线通信的方法。 该方法包括：生成用于宽带正交频分复用符号（310）的多个音调，该音调包括多个连续的零值音调，将音调逆傅里叶变换为多个时域采样（312），复制 作为循环块（314）的一部分的多个时域采样，与时域采样（312）连续的循环块（314），时域采样（312）的时域窗口滤波和 所述循环块（314）形成所述宽带正交频分多路复用符号（310）的一部分，其中所述时域窗口滤波器（350）是具有所述phi（k）+ phi（k） k + N ft ft ft ft is is is is about about about about about about about about about where where and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and。

公开(公告)号：US20060008016A1

公开(公告)日：2006-01-12

申请号：US11173840

申请日：2005-07-01

申请人： Jaiganesh Balakrishnan ,  Hirohisa Yamaguchi

发明人： Jaiganesh Balakrishnan ,  Hirohisa Yamaguchi

IPC分类号： H04J11/00

CPC分类号： H04L27/2613 ,  H04B1/719 ,  H04L25/03828 ,  H04L27/2626

摘要： A method of wirelessly communicating is disclosed. The method comprises determining a matrix W based in part on limiting a plurality of active interference cancellation tone values (416), determining the active interference cancellation tone values (416) based on W and based on a plurality of information data values (410), and transmitting an orthogonal frequency division multiplex signal (310) based on the plurality of active interference cancellation tone values (416) and the information data values (410).

摘要翻译： 公开了一种无线通信的方法。 该方法包括：基于限制多个主动干扰消除音调值（416），基于W并基于多个信息数据值（410）确定主动干扰消除音调值（416）来确定矩阵W， 以及基于所述多个有源干扰消除音调值（416）和所述信息数据值（410）发送正交频分复用信号（310）。

公开(公告)号：US20110058626A1

公开(公告)日：2011-03-10

申请号：US12636917

申请日：2009-12-14

申请人： Jaiganesh Balakrishnan ,  Hirohisa Yamaguchi

发明人： Jaiganesh Balakrishnan ,  Hirohisa Yamaguchi

IPC分类号： H04L25/49

CPC分类号： H04L27/2613 ,  H04B1/719 ,  H04L25/03828 ,  H04L27/2626

摘要： A transmitter and communication system are disclosed. A first component operable to determine an active interference cancellation value for each of a plurality of active interference cancellation tones and a protection-edge value for each of a plurality of protection-edge tones based on optimizing active interference cancellation, and further based on constraining an average power of the active interference cancellation values and the protection-edge values to less than or equal to a maximum power level, and on a plurality of data values. A second component is operable to transform a sequence of tones to a time domain signal, the sequence of tones comprised of the active interference cancellation tones, the protection-edge tones, and a plurality of data tones, the data tones containing the data values. A third component operable to transmit an orthogonal frequency division multiplex signal based on the time domain signal.

摘要翻译： 公开了一种发射机和通信系统。 第一组件，其可操作以基于优化主动干扰消除来确定多个有源干扰消除音调中的每一个的主动干扰消除值和针对多个保护边缘音调中的每一个的保护边缘值，并且还基于约束 主动干扰消除值和保护边缘值的平均功率小于或等于最大功率电平，以及多个数据值。 第二组件可操作以将音调序列变换为时域信号，由主动干扰消除音调组成的音调序列，保护边缘音调和多个数据音调，数据音调包含数据值。 第三组件，用于基于时域信号发送正交频分复用信号。

公开(公告)号：US07184485B2

公开(公告)日：2007-02-27

申请号：US11174401

申请日：2005-07-01

申请人： Jaiganesh Balakrishnan ,  Anuj Batra ,  Hirohisa Yamaguchi

发明人： Jaiganesh Balakrishnan ,  Anuj Batra ,  Hirohisa Yamaguchi

IPC分类号： H04K1/10

CPC分类号： H04L27/2613 ,  H04B1/719 ,  H04L25/03828 ,  H04L27/2626

摘要： A method of wirelessly communicating is disclosed. The method comprises generating a plurality of tones for a wideband orthogonal frequency division multiplex symbol (310), the tones including a plurality of contiguous zero-valued tones, inverse Fourier transforming the tones to a plurality of time-domain samples (312), copying a plurality of the time-domain samples as a portion of a cyclic block (314), the cyclic block (314) contiguous with the time-domain samples (312), time-domain window filtering the time-domain samples (312) and the cyclic block (314) to form a portion of the wideband orthogonal frequency division multiplex symbol (310), wherein the time-domain window filter (350) is a function Φ(k) having the property that Φ(k)+Φ(k+Nfft) is about equal to a constant θ where Nfft is the number of tones, and transmitting the wideband orthogonal frequency division multiplex symbol (310).

摘要翻译： 公开了一种无线通信的方法。 该方法包括：生成用于宽带正交频分复用符号（310）的多个音调，该音调包括多个连续的零值音调，将音调逆傅里叶变换为多个时域采样（312），复制 作为循环块（314）的一部分的多个时域采样，与时域采样（312）连续的循环块（314），时域采样（312）的时域窗口滤波和 循环块（314）以形成宽带正交频分复用符号（310）的一部分，其中时域窗口滤波器（350）是具有Phi（k）+ Phi（k） k + N ft ft ft ft is is is is about about about about about about about about about where where and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and。

公开(公告)号：US07099270B2

公开(公告)日：2006-08-29

申请号：US10162891

申请日：2002-06-06

申请人： Hirohisa Yamaguchi

发明人： Hirohisa Yamaguchi

IPC分类号： H04J11/00

CPC分类号： H04L25/03159 ,  H04L25/0236 ,  H04L2025/03414

摘要： A multi-path equalization system for orthogonal frequency division multiplexing communication (OFDM) system includes a first estimator for estimating the channel characteristic using pilot signal. A divider is coupled to the estimator for dividing each sub-carrier with the channel characteristic to get the equalization to the data signal. A de-mapper uses the phase and amplitude correction of the channel estimate to recover the data signals. An improved channel estimation is provided by a repeat channel estimation feedback loop that includes the de-mapper a multiplier, an inverse fast Fourier transform (IFFT), a low pass filter and a fast Fourier transform (FFT). The improved channel estimation is obtained by multiplying at the multiplier the conjugate of the de-mapped data to the input sub-carriers and applying inverse FFT, low pass filtering and FFT to get the new channel estimate. Each sub-carrier is divided with new channel characteristic to get new equalization to the data signal. The channel estimation is repeated until there is convergence. The output is provided after the de-mapper. In the case of channel decoding to improve performance a Viterbi decoder and convolutional encoder is coupled in loop between the de-mapper and the multiplier.

公开(公告)号：US06947952B1

公开(公告)日：2005-09-20

申请号：US09569242

申请日：2000-05-11

申请人： Michael Dean Welch ,  Hirohisa Yamaguchi

发明人： Michael Dean Welch ,  Hirohisa Yamaguchi

IPC分类号： G06F17/30

CPC分类号： G06F17/30595 ,  G06F17/30607 ,  Y10S707/99938 ,  Y10S707/99945 ,  Y10S707/99948

摘要： A method in a computer system executing a client application and an OODBMS and an RDBMS software, which system has a storage medium accessible by the RDBMS software and the OODBMS software being accessible by the client application. The method generates unique object identifiers in a data abstraction layer disposed between the OODBMS and the RDBMS software in response to a parent thread created by the client application. The method includes the steps of creating a child thread that has access to the RDBMS software, which child thread is used exclusively for generating object identifier numbers and for returning the same to the parent thread. A unique object identifier table is created, which is maintained by the child thread. In response to a request by the parent thread for a unique object identifier, the child thread generates a finite number of the unique object identifiers and communicates their values to the parent thread. After this, a recording is made in the table of the fact that a finite number of unique object identifiers have been generated.

摘要翻译： 执行客户端应用程序的计算机系统中的方法以及OODBMS和RDBMS软件，该系统具有可由RDBMS软件访问的存储介质，以及可由客户端应用访问的OODBMS软件。 该方法响应于由客户端应用程序创建的父线程，在OODBMS和RDBMS软件之间的数据抽象层中生成唯一的对象标识符。 该方法包括以下步骤：创建可访问RDBMS软件的子线程，该子线程专门用于生成对象标识符号码并将其返回给父线程。 创建唯一的对象标识符表，由子线程维护。 响应于父线程对唯一对象标识符的请求，子线程生成有限数量的唯一对象标识符，并将其值传递给父线程。 之后，在表格中记录了已经生成有限数量的唯一对象标识符的事实。

公开(公告)号：US06687376B1

公开(公告)日：2004-02-03

申请号：US09222445

申请日：1998-12-29

申请人： Hirohisa Yamaguchi

发明人： Hirohisa Yamaguchi

IPC分类号： H04L928

CPC分类号： H04J13/10 ,  H04J13/0022

摘要： A circuit is designed with a first register circuit (364) arranged to store a state matrix. A memory circuit (710) is arranged to store a plurality of addressable matrices. A control circuit (700) is coupled to receive a delay value and a clock signal. The control circuit is arranged to address a selected matrix from the plurality of addressable matrices in response to the delay value and the clock signal. A backward register circuit (420) is coupled (712) to receive the selected matrix. The backward register circuit is arranged to produce a plurality of shifted matrices from the selected matrix in response to the clock signal. A logic circuit (330-354) is coupled to receive the state matrix, the selected matrix and the plurality of shifted matrices. The logic circuit produces a logical combination of the state matrix and each of the selected matrix and the plurality of shifted matrices.

摘要翻译： 电路被设计为具有布置成存储状态矩阵的第一寄存器电路（364）。 存储电路（710）被布置成存储多个可寻址矩阵。 控制电路（700）被耦合以接收延迟值和时钟信号。 控制电路被布置成响应于延迟值和时钟信号从多个可寻址矩阵中寻址选定的矩阵。 反向寄存器电路（420）被耦合（712）以接收所选择的矩阵。 反向寄存器电路被布置为响应于时钟信号从所选矩阵产生多个移位矩阵。 逻辑电路（330-354）被耦合以接收状态矩阵，所选矩阵和多个移位矩阵。 逻辑电路产生状态矩阵与所选矩阵和多个移位矩阵中的每一个的逻辑组合。

公开(公告)号：US5838967A

公开(公告)日：1998-11-17

申请号：US366008

申请日：1994-12-29

申请人： Tetsuhisa Okayama ,  Yoshiaki Aoyama ,  Hiroyuki Hoshino ,  Hirohisa Yamaguchi

发明人： Tetsuhisa Okayama ,  Yoshiaki Aoyama ,  Hiroyuki Hoshino ,  Hirohisa Yamaguchi

IPC分类号： G06F17/30

CPC分类号： G06F17/30265 ,  Y10S707/99931 ,  Y10S707/99945

摘要： An addition unit adds information for managing a plurality of image-data files to directory information packets. A managing unit utilizes the added information for managing the plurality of image-data files. A retrieving unit retrieves, in accordance with an input retrieving information, a desired image-data file from among the plurality of image-data files recorded on a recording medium. An image-data input and output interfacing unit interfaces for input and output of image-data files. A recording-medium interfacing unit interfaces for information input and output by means of the recording medium. An output video-signal producing unit produces a video signal for output, the producing being effected by converting the retrieved image-data file into a corresponding analog video signal and using the analog video signal as the video signal for output. A signal combining unit combines the video signal for output, the combining being executed with a retrieval video signal, the video signal for output having been output from the output video-signal producing unit, and the retrieval video signal having been obtained by converting the input retrieving information into a corresponding analog video signal then used as the retrieval video signal. A microcomputer carries out the above functions.

摘要翻译： 附加单元将用于管理多个图像数据文件的信息添加到目录信息分组。 管理单元利用添加的信息来管理多个图像数据文件。 检索单元根据输入检索信息从记录在记录介质上的多个图像数据文件中检索所需的图像数据文件。 用于输入和输出图像数据文件的图像数据输入和输出接口单元接口。 记录介质接口单元接口，用于通过记录介质输入和输出信息。 输出视频信号产生单元产生用于输出的视频信号，通过将检索到的图像数据文件转换成对应的模拟视频信号并使用模拟视频信号作为视频信号进行输出来进行产生。 信号组合单元组合用于输出的视频信号，与检索视频信号执行的组合，从输出视频信号产生单元输出的用于输出的视频信号，以及通过转换输入获得的检索视频信号 将信息检索到相应的模拟视频信号中，然后用作检索视频信号。 微机执行上述功能。