公开(公告)号：US06519292B1

公开(公告)日：2003-02-11

申请号：US09252808

申请日：1999-02-19

申请人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

发明人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

IPC分类号： H04L2704

CPC分类号： H04W52/267 ,  H04B1/707 ,  H04B7/264 ,  H04L5/026 ,  H04L27/2608

摘要： A transmission method and apparatus which perform communication without interfering with other types of communication is provided. A transmission symbol stream is generated by applying predetermined modulation processing to an encoded bit series obtained by encoding an information bit series of a predetermined transmission rate. A transmission signal generated by applying the transmission processing to the transmission symbol series is then transmitted. A transmission-information bit series with a transmission rate lower than the predetermined transmission rate is generated first. Transmission of the transmission signal generated in accordance with the transmission-information bit series then begins through a predetermine communication channel. The low transmission rate is then sequentially stepwise increased to the predetermined transmission rate. Transmission is performed while sequentially stepwise increasing the number of communication channels in accordance with the sequential stepwise increase of the low transmission rate.

摘要翻译： 提供一种在不干扰其他类型的通信的情况下执行通信的传输方法和装置。 通过对通过对预定传输速率的信息比特序列进行编码而获得的编码比特序列应用预定的调制处理来生成发送符号流。 然后发送通过对发送符号序列应用发送处理而生成的发送信号。 首先产生具有低于预定传输速率的传输速率的传输信息比特序列。 根据传输信息比特序列生成的传输信号的传输开始于预定的通信信道。 然后，低传输速率依次逐步增加到预定的传输速率。 在按照逐步增加低传输速率的顺序逐步增加通信信道的数量的同时顺序地增加传输。

公开(公告)号：US06381234B2

公开(公告)日：2002-04-30

申请号：US08965963

申请日：1997-11-07

申请人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

发明人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

IPC分类号： H04J300

CPC分类号： H04B7/2615

摘要： An access request to a base station or the like can be preferably performed in time division access wherein one transmission band of communication such as a wireless telephone system or the like is divided into time slots. The period of a time slot of a channel for acquiring an access right among up link channels from a terminal apparatus to a base station is made longer than the period of a time slot of other channels.

摘要翻译： 对基站等的访问请求可以优选地在时分接入中执行，其中诸如无线电话系统等的一个通信传输带被划分为时隙。 用于从终端装置到基站的用于获取上行链路信道中的访问权限的信道的时隙的周期比其他信道的时隙的周期长。

公开(公告)号：US06243423B1

公开(公告)日：2001-06-05

申请号：US09103994

申请日：1998-06-24

申请人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

发明人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

IPC分类号： H04L3202

CPC分类号： H04L27/2649 ,  H04L25/0228 ,  H04L25/067 ,  H04L27/2626

摘要： A receiver restores a transmitted information bit series accurately by performing maximum-likelihood series estimation. The operation of the receiver includes estimating characteristics of a transmission line for each symbol based on the amplitude and phases of pilot symbols which are extracted from reception symbol groups, calculating weighting factors showing the reliability of the transmission line in symbols based on the estimation result and the reception symbol groups, multiplying each symbol of information symbol groups which are extracted from the reception symbol groups by the weighting factors to reflect the transmission-line reliability in symbols, and restoring an information bit series by applying maximum-likelihood series estimation to coded bit groups restored from the information symbol groups on which the reliability is reflected.

摘要翻译： 接收机通过执行最大似然序列估计精确地恢复发送的信息比特串。 接收机的操作包括基于从接收符号组提取的导频符号的幅度和相位来估计每个符号的传输线的特性，基于估计结果计算表示传输线的符号中的传输线的可靠性的加权因子;以及 接收符号组，将从接收符号组提取的信息符号组的每个符号乘以加权因子以反映符号中的传输线可靠性，并且通过对编码位应用最大似然序列估计来恢复信息比特序列 从反映可靠性的信息符号组恢复的组。

公开(公告)号：US5952876A

公开(公告)日：1999-09-14

申请号：US919208

申请日：1997-08-28

申请人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

发明人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

IPC分类号： H03M1/08 ,  H03H17/00 ,  H03H17/06 ,  H03K5/00

CPC分类号： H03H17/0628 ,  H03H17/0607

摘要： In a filter device a reference clock generator produces a reference clock signal having the stated frequency; a data signal generator generates a data signal which is asynchronous with the reference clock signal; trigger signal generator produces a trigger signal when a discrepancy which exceeds the interval of one clock of the reference signal occurs between the reference clock signal and the data signal; and a digital circuit re-samples the data signal in accordance with the reference clock signal and changes the magnification ratio of the re-sampling by increasing or reducing the sampling period of re-sampling by one clock interval of the reference signal. By changing the magnification ratio of the re-sampling on only the occasion of such a timing that a temporal discrepancy between the reference signal and the data signal has been detected, it can correct the temporal discrepancy which is due to the fact that the frequencies of the reference signal and the data signal are asynchronous with each other and can prevent spectral distortion of the transmission signal, and also it can utilize the reference signal, which is asynchronous with the data signal, for production of the transmission signal without any trouble.

摘要翻译： 在滤波器装置中，参考时钟发生器产生具有所述频率的参考时钟信号; 数据信号发生器产生与参考时钟信号异步的数据信号; 当参考时钟信号和数据信号之间发生超过参考信号的一个时钟间隔的差异时，触发信号发生器产生触发信号; 并且数字电路根据参考时钟信号对数据信号进行重新采样，并通过将参考信号的重新采样的采样周期增加或减小一个时钟间隔来改变重新采样的放大率。 通过仅在检测到参考信号和数据信号之间的时间差异的定时的情况下改变重新采样的放大比率，可以校正由于以下事实导致的时间差异： 参考信号和数据信号彼此异步，并且可以防止传输信号的频谱失真，并且也可以利用与数据信号异步的参考信号来生成传输信号而没有任何麻烦。

公开(公告)号：US08873517B2

公开(公告)日：2014-10-28

申请号：US13333582

申请日：2011-12-21

申请人： Kazuyuki Sakoda ,  Kenzo Nishikawa ,  Yuichi Morioka ,  Mitsuhiro Suzuki

发明人： Kazuyuki Sakoda ,  Kenzo Nishikawa ,  Yuichi Morioka ,  Mitsuhiro Suzuki

IPC分类号： H04J3/00 ,  H04L12/801 ,  H04W28/06 ,  H04W84/12 ,  H04W48/02 ,  H04W74/08

CPC分类号： H04W48/02 ,  H04L47/10 ,  H04W28/06 ,  H04W74/08 ,  H04W84/12 ,  H04W84/18

摘要： The present invention eliminates a transmission-waiting operation which is unnecessary while accommodating a prioritized traffic. Although a communication station enters a transmission-disallowed state in response to detection of a signal addressed to another station in accordance with medium access control based on CSMA, if the communication station receives a frame transmitted with priority to a local station during the transmission waiting, it cancels the transmission-disallowed state, sends back a frame responding the frame transmitted with priority and effectively operates a transmission prioritized period. The communication station starts a search procedure to perform a processing of evading duplication of the transmission prioritized periods if it judges a possibility of a problem occurring in a time zone in which reception with priority is possible.

摘要翻译： 本发明消除了在容纳优先业务量时不必要的传输等待操作。 虽然响应于根据基于CSMA的媒体访问控制寻址到另一站的信号的检测，通信站进入传输不允许状态，但是如果通信站在传输等待期间接收到优先发送到本地站的帧， 它取消传输不允许状态，发送一个响应优先发送的帧的帧，并有效地操作传输优先级周期。 如果通信站判断在优先级可以接收的时间段内发生问题的可能性，则开始搜索过程来执行回避发送优先级周期的重复的处理。

公开(公告)号：US07489622B2

公开(公告)日：2009-02-10

申请号：US11085344

申请日：2005-03-21

申请人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

发明人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

IPC分类号： H04J11/00

CPC分类号： H04L27/2601

摘要： A transmitting apparatus, receiving apparatus, communication system, and a signal processing method for each apply a suitable modulation method and transmission path estimation method in accordance with the characteristics of the transmission information and capable of improving the transmission efficiency. At the transmission side, the method of estimation of the transmission path and the modulation method are selected in accordance with an attribute of the data to be transmitted, for example, the size of a packet to be transmitted, the transmission data is mapped by the selected modulation method, the signal is processed in accordance with the transmission path estimation method, and a transmission signal is created by increase fast Fourier transform processing and transmitted. At the reception side, the received signal is fast Fourier transformed, the transmission path is estimated by the transmission path estimation method selected at the transmission side, the received signal is corrected in accordance with the result, and the received data is reproduced in accordance with the modulation method. Therefore, it is possible to always adopt the optimum transmission method in accordance with the attribute of the transmission data etc. and possible to realize an improvement of a transmission efficiency and an enhancement of the quality of communication.

摘要翻译： 一种发送装置，接收装置，通信系统和信号处理方法，用于根据传输信息的特性应用适当的调制方法和传输路径估计方法，并且能够提高传输效率。 在发送侧，根据要发送的数据的属性，例如要发送的分组的大小来选择传输路径的估计方法和调制方法，发送数据被映射到 选择的调制方法，根据传输路径估计方法对信号进行处理，并且通过增加快速傅立叶变换处理并发送来产生传输信号。 在接收侧，接收信号被快速傅立叶变换，通过在发送侧选择的传输路径估计方法估计传输路径，根据结果校正接收信号，并根据接收信号再现接收的数据 调制方式。 因此，可以始终采用根据传输数据等的属性的最佳传输方法，并且可以实现传输效率的提高和通信质量的提高。

公开(公告)号：US06992973B2

公开(公告)日：2006-01-31

申请号：US11085497

申请日：2005-03-21

申请人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

发明人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

IPC分类号： H04J11/00

CPC分类号： H04L27/2601

摘要： A transmitting apparatus, receiving apparatus, communication system, and a signal processing method for each apply a suitable modulation method and transmission path estimation method in accordance with the characteristics of the transmission information and capable of improving the transmission efficiency. At the transmission side, the method of estimation of the transmission path and the modulation method are selected in accordance with an attribute of the data to be transmitted, for example, the size of a packet to be transmitted, the transmission data is mapped by the selected modulation method, the signal is processed in accordance with the transmission path estimation method, and a transmission signal is created by increase fast Fourier transform processing and transmitted. At the reception side, the received signal is fast Fourier transformed, the transmission path is estimated by the transmission path estimation method selected at the transmission side, the received signal is corrected in accordance with the result, and the received data is reproduced in accordance with the modulation method. Therefore, it is possible to always adopt the optimum transmission method in accordance with the attribute of the transmission data etc. and possible to realize an improvement of a transmission efficiency and an enhancement of the quality of communication.

公开(公告)号：US20050174933A1

公开(公告)日：2005-08-11

申请号：US11085497

申请日：2005-03-21

申请人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

发明人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

IPC分类号： H04J11/00 ,  H04B3/10 ,  H04L27/26 ,  H03K5/159

CPC分类号： H04L27/2601

摘要： A transmitting apparatus, receiving apparatus, communication system, and a signal processing method for each apply a suitable modulation method and transmission path estimation method in accordance with the characteristics of the transmission information and capable of improving the transmission efficiency. At the transmission side, the method of estimation of the transmission path and the modulation method are selected in accordance with an attribute of the data to be transmitted, for example, the size of a packet to be transmitted, the transmission data is mapped by the selected modulation method, the signal is processed in accordance with the transmission path estimation method, and a transmission signal is created by increase fast Fourier transform processing and transmitted. At the reception side, the received signal is fast Fourier transformed, the transmission path is estimated by the transmission path estimation method selected at the transmission side, the received signal is corrected in accordance with the result, and the received data is reproduced in accordance with the modulation method. Therefore, it is possible to always adopt the optimum transmission method in accordance with the attribute of the transmission data etc. and possible to realize an improvement of a transmission efficiency and an enhancement of the quality of communication.

公开(公告)号：US06888789B1

公开(公告)日：2005-05-03

申请号：US09656153

申请日：2000-09-06

申请人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

发明人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

IPC分类号： H04J11/00 ,  H04B1/76 ,  H04B3/10 ,  H04L27/26

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L5/006 ,  H04L5/0085 ,  H04L25/0226 ,  H04L27/0008 ,  H04L27/3455

摘要： A transmitting apparatus, receiving apparatus, communication system, and a signal processing method of each applying a suitable modulation method and transmission path estimation method in accordance with characteristics of the transmission information for improving the transmission efficiency operate so that at the transmission side, the ratio of adding transmission path estimation pilot symbols is suitably controlled in accordance with an aspect of the dat transmitted, for example, the size of the packets transmitted and the state of the transmission path, wherein the transmission data is mapped by the selected modulation method, and the signal is processed in accordance with the method of estimation of the transmission path, and the transmission signal is produced by inverse fast Fourier transform processing and transmitted. At the reception side, the received signal is fast Fourier transformed, the transmission path is estimated by the transmission path estimation method selected at the transmission side, the received signal is correct in accordance with result, and the received data is reproduced in accordance with the modulation method. Therefore, it is possible to always adopt the optimum transmission method in accordance with the attribute of the transmission data etc. and possible to realize an improvement of a transmission efficiency and an enhancement of the quality of communication.

摘要翻译： 根据用于提高传输效率的传输信息的特性应用适当的调制方法和传输路径估计方法的发送装置，接收装置，通信系统和信号处理方法，使得在传输侧，比率 根据发送的数据包的数据的方面，例如发送的分组的大小和传输路径的状态，适当地控制添加传输路径估计导频符号的方法，其中通过所选择的调制方法映射传输数据，以及 根据传输路径的估计方法对信号进行处理，并且通过快速傅里叶逆变换处理产生发送信号并进行发送。 在接收端，接收信号进行快速傅立叶变换，通过在发送侧选择的发送路径估计方法估计发送路径，接收信号根据结果是正确的，接收到的数据根据 调制方式。 因此，可以始终采用根据传输数据等的属性的最佳传输方法，并且可以实现传输效率的提高和通信质量的提高。

公开(公告)号：US06882618B1

公开(公告)日：2005-04-19

申请号：US09656152

申请日：2000-09-06

申请人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

发明人： Kazuyuki Sakoda ,  Mitsuhiro Suzuki

IPC分类号： H04J11/00 ,  H04B3/10 ,  H04L27/26

CPC分类号： H04L27/2601

摘要： A transmitting apparatus, receiving apparatus, communication system, and a signal processing method for each apply a suitable modulation method and transmission path estimation method in accordance with the characteristics of the transmission information and capable of improving the transmission efficiency. At the transmission side, the method of estimation of the transmission path and the modulation method are selected in accordance with an attribute of the data to be transmitted, for example, the size of a packet to be transmitted, the transmission data is mapped by the selected modulation method, the signal is processed in accordance with the transmission path estimation method, and a transmission signal is created by increase fast Fourier transform processing and transmitted. At the reception side, the received signal is fast Fourier transformed, the transmission path is estimated by the transmission path estimation method selected at the transmission side, the received signal is corrected in accordance with the result, and the received data is reproduced in accordance with the modulation method. Therefore, it is possible to always adopt the optimum transmission method in accordance with the attribute of the transmission data etc. and possible to realize an improvement of a transmission efficiency and an enhancement of the quality of communication.

摘要翻译： 一种发送装置，接收装置，通信系统和信号处理方法，用于根据传输信息的特性应用适当的调制方法和传输路径估计方法，并且能够提高传输效率。 在发送侧，根据要发送的数据的属性，例如要发送的分组的大小来选择传输路径的估计方法和调制方法，发送数据被映射到 选择的调制方法，根据传输路径估计方法对信号进行处理，并且通过增加快速傅立叶变换处理并发送来产生传输信号。 在接收侧，接收信号被快速傅立叶变换，通过在发送侧选择的传输路径估计方法估计传输路径，根据结果校正接收信号，并根据接收信号再现接收的数据 调制方式。 因此，可以始终采用根据传输数据等的属性的最佳传输方法，并且可以实现传输效率的提高和通信质量的提高。