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1. 发明申请

US20100219884A1 TRANSMITTER, RECEIVER, POWER AMPLIFICATION METHOD, AND SIGNAL DEMODULATION METHOD 审中-公开
标题翻译：发射机，接收机，功率放大方法和信号解调方法
公开(公告)号：US20100219884A1
公开(公告)日：2010-09-02
申请号：US12714771
申请日：2010-03-01
申请人： Hiromasa Fujii , Takahiro Asai , Yukihiko Okumura , Shigeru Tomisato , Masaharu Hata
发明人： Hiromasa Fujii , Takahiro Asai , Yukihiko Okumura , Shigeru Tomisato , Masaharu Hata
IPC分类号： G06G7/12
CPC分类号： H04L27/2624 , H04L27/2626 , H04L27/2647
摘要： There is provided a transmitter including a nonlinear input-output conversion characteristic control unit configured to determine a nonlinear input-output conversion characteristic for converting a signal depending on a usage status of a frequency band; an amplitude control unit configured to convert an amplitude of the signal based on the determined nonlinear input-output conversion characteristic; and a transmission power amplification unit configured to amplify power of the signal with the converted amplitude. There is also provided a transmitter including a nonlinear input-output conversion characteristic control unit configured to determine a nonlinear input-output conversion characteristic for converting a signal depending on a usage status of a frequency band; plural transmission power amplification units having different nonlinear input-output conversion characteristics; and a selecting unit configured to select one of the plural transmission power amplification units based on the determined nonlinear input-output conversion characteristic.
摘要翻译：提供了一种发射机，包括：非线性输入 - 输出转换特性控制单元，被配置为根据频带的使用状态确定用于转换信号的非线性输入 - 输出转换特性; 幅度控制单元，被配置为基于所确定的非线性输入 - 输出转换特性来转换所述信号的幅度; 以及发送功率放大单元，被配置为以转换的幅度放大所述信号的功率。还提供了一种发射机，包括：非线性输入 - 输出转换特性控制单元，被配置为根据频带的使用状态确定用于转换信号的非线性输入 - 输出转换特性; 具有不同非线性输入输出转换特性的多个发送功率放大单元; 以及选择单元，被配置为基于所确定的非线性输入 - 输出转换特性来选择所述多个发送功率放大单元中的一个。

2. 发明申请

US20050054318A1 Radio receiver, radio transmitter and impedance control method 失效
标题翻译：无线电接收机，无线电发射机和阻抗控制方法
公开(公告)号：US20050054318A1
公开(公告)日：2005-03-10
申请号：US10892147
申请日：2004-07-16
申请人： Hiromasa Fujii , Shigeru Tomisato , Hirohito Suda
发明人： Hiromasa Fujii , Shigeru Tomisato , Hirohito Suda
IPC分类号： H01Q1/24 , H01Q3/26 , H01Q3/44 , H01Q21/29 , H04B7/06 , H04B7/08 , H04L1/00 , H04L25/02 , H04B17/00 , G01S3/16 , G01S3/28 , H04B1/06 , H04B7/00 , H04M1/00
CPC分类号： H01Q21/29 , H01Q1/246 , H01Q3/2635 , H01Q3/44 , H04L1/0025 , H04L25/0202
摘要： A radio receiver includes a plurality of antenna elements for receiving a radio signal from a radio transmitter; a setting part changing an impedance of at least one of the plurality of antenna elements according to an instruction signal; a measuring part measuring a change in throughput in a received signal caused due to the change in the impedance; and an instruction part providing the instruction signal which is changed in response to the measurement result.
摘要翻译：无线电接收机包括用于从无线电发射机接收无线电信号的多个天线元件; 设置部分，根据指令信号改变所述多个天线元件中的至少一个的阻抗; 测量由于阻抗变化引起的接收信号中的吞吐量变化的测量部分; 以及提供响应于测量结果而改变的指令信号的指令部分。

3. 发明授权

US07619963B2 OFDM signal frame generator, transmitter, signal transmission system and OFDM signal frame generating method 有权
标题翻译： OFDM信号帧发生器，发射机，信号传输系统和OFDM信号帧生成方法
公开(公告)号：US07619963B2
公开(公告)日：2009-11-17
申请号：US10865817
申请日：2004-06-14
申请人： Tetsushi Abe , Hirohito Suda , Shigeru Tomisato , Hiromasa Fujii , Takefumi Yamada
发明人： Tetsushi Abe , Hirohito Suda , Shigeru Tomisato , Hiromasa Fujii , Takefumi Yamada
IPC分类号： H04J11/00 , H04J1/00 , H04K1/10 , H04L27/28
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0046 , H04L5/006
摘要： An OFDM signal frame generator includes a rate determiner configured to determine rate information to generate a signal frame to be transmitted as an OFDM signal based on a value of a received signal quality. The signal frame generator further includes a pilot and data arrangement format determiner configured to determine a pilot and data arrangement format of the signal that is to be transmitted; power amplification rate determiner configured to determine a power amplification rate for the signal frame; data symbol generator configured to generate data symbol series to be transmitted based on the rate information and based on the power amplification rate; and transmission signal frame generator configured to generate the signal frame based on the generated data symbol series, on the number of pilot symbols, and based on the pilot & data arrangement format.
摘要翻译： OFDM信号帧发生器包括速率确定器，其被配置为基于接收信号质量的值来确定速率信息以生成要作为OFDM信号发送的信号帧。所述信号帧发生器还包括导频和数据排列格式确定器，被配置为确定要发送的信号的导频和数据排列格式; 功率放大率确定器，被配置为确定所述信号帧的功率放大率; 数据符号发生器，其被配置为基于所述速率信息并基于所述功率放大率生成要发送的数据符号序列; 以及发送信号帧生成器，被配置为基于所生成的数据符号序列，关于导频符号的数量，并且基于导频和数据排列格式生成信号帧。

4. 发明授权

US07006041B2 Radio receiver, radio transmitter and impedance control method 失效
标题翻译：无线电接收机，无线电发射机和阻抗控制方法
公开(公告)号：US07006041B2
公开(公告)日：2006-02-28
申请号：US10892147
申请日：2004-07-16
申请人： Hiromasa Fujii , Shigeru Tomisato , Hirohito Suda
发明人： Hiromasa Fujii , Shigeru Tomisato , Hirohito Suda
IPC分类号： H01Q3/24
CPC分类号： H01Q21/29 , H01Q1/246 , H01Q3/2635 , H01Q3/44 , H04L1/0025 , H04L25/0202
摘要： A radio receiver includes a plurality of antenna elements for receiving a radio signal from a radio transmitter; a setting part changing an impedance of at least one of the plurality of antenna elements according to an instruction signal; a measuring part measuring a change in throughput in a received signal caused due to the change in the impedance; and an instruction part providing the instruction signal which is changed in response to the measurement result.
摘要翻译：无线电接收机包括用于从无线电发射机接收无线电信号的多个天线元件; 设置部分，根据指令信号改变所述多个天线元件中的至少一个的阻抗; 测量由于阻抗变化引起的接收信号中的吞吐量变化的测量部分; 以及提供响应于测量结果而改变的指令信号的指令部分。

5. 发明授权

US07027533B2 Turbo-reception method and turbo-receiver 失效
标题翻译：涡轮接收方式和涡轮接收机
公开(公告)号：US07027533B2
公开(公告)日：2006-04-11
申请号：US10076407
申请日：2002-02-19
申请人： Tetsushi Abe , Hiromasa Fujii , Shigeru Tomisato , Tadashi Matsumoto
发明人： Tetsushi Abe , Hiromasa Fujii , Shigeru Tomisato , Tadashi Matsumoto
IPC分类号： H04L27/06 , H03M13/03
CPC分类号： H04L25/0236 , H04L1/005 , H04L25/0204
摘要： An impluse response hmn(q) of each transmission path is estimated from N received signals rm (m=1, . . . , M) and a known signal (for a number of users equal to N, n=1, . . . , N). M×N matrix H (q) having hmn(q) as an element and a Q×Q matrix H having H(q) as an element are determined (where Q represents a number of multipaths of each transmitted wave and q=0, . . . , Q−1). A soft decision value b′n(k) is determined from decoded λ2 [bn(k)], and this is used to generate an interference component matrix B′(k) to generate an interference replica H·B′(k). The interference replica H·B′(k) is subtracted from a received matrix y(k) to determine y′(k). y(k) and H are used to determine an adaptive filter coefficient wn(k) to be applied to an n-th user in order to eliminate residual interference components in y′(k) according to the minimum mean square error criteria. y(k) is passed through wn(k) to provide a log-likelihood ratio as a received signal from the user n from which interferences are eliminated.
摘要翻译：从N个接收信号r m（m = 1，...，M）和已知信号（m 1，...，M）估计每个传输路径的静态响应（q）对于等于N的数个用户，n = 1，...，N）。确定具有h（q）作为元素的M×N矩阵H（q）和具有H（q）作为元素的QxQ矩阵H（其中Q表示每个发射波的多径的数量， q = 0，... Q-1）。从解码的λ2（b）n（k）]确定软判定值b''N（k），并将其用于生成干扰分量矩阵B'（k）以产生干扰复制品H.B'（k）。从接收矩阵y（k）中减去干扰副本H.B'（k）以确定y'（k）。使用y（k）和H来确定要施加到第n个用户的自适应滤波器系数w N（k），以便根据下式来消除y'（k）中的残留干扰分量：最小均方误差标准。 y（k）通过w（n）（k），以提供对数似然比作为来自消除了干扰的用户n的接收信号。

6. 发明授权

US07633924B2 Communications system, communications method, transmitting apparatus, receiving apparatus and control program to variably adjust a symbol length 失效
标题翻译：通信系统，通信方法，发送装置，接收装置和控制程序，以可变地调整符号长度
公开(公告)号：US07633924B2
公开(公告)日：2009-12-15
申请号：US10535859
申请日：2003-11-20
申请人： Hiromasa Fujii , Shigeru Tomisato , Hirohito Suda , Tetsushi Abe , Takefumi Yamada
发明人： Hiromasa Fujii , Shigeru Tomisato , Hirohito Suda , Tetsushi Abe , Takefumi Yamada
IPC分类号： H04J1/00
CPC分类号： H04L27/2602 , H04B1/7103 , H04L27/2607 , H04L27/2608 , H04L27/261 , H04L27/2613 , H04L27/2626 , H04L27/2656 , H04L27/2662 , H04L27/2688
摘要： An object of the present invention is to provide a communications system etc., which can reduce the influence of interference from other systems which results from a difference in symbol length, in an area where a plurality of systems using different transmission methods are mixed. The present invention relates to a communications system in which a plurality of systems share the same frequency bandwidth so as to transmit information symbols. One of the plurality of systems 1 includes an identifying unit 109 configured to identify the symbol length of an information symbol transmitted in a different system 2; and an adjusting unit 102, 107 configured to adjust the symbol length of an information symbol to be transmitted, in accordance with an identified symbol length.
摘要翻译：本发明的目的是提供一种通信系统等，其可以在混合使用不同传输方式的多个系统的区域中减少由于符号长度的差异而导致的来自其他系统的干扰的影响。本发明涉及一种通信系统，其中多个系统共享相同的频率带宽以便发送信息符号。多个系统1中的一个包括识别单元109，其被配置为识别在不同系统2中发送的信息符号的符号长度; 以及调整单元102,107，其被配置为根据所识别的符号长度来调整要发送的信息符号的符号长度。

7. 发明授权

US07215704B2 Adaptive equalizing apparatus and program therefor 有权
标题翻译：自适应均衡装置及其程序
公开(公告)号：US07215704B2
公开(公告)日：2007-05-08
申请号：US10670562
申请日：2003-09-26
申请人： Hiromasa Fujii , Tetsushi Abe , Shigeru Tomisato , Hirohito Suda
发明人： Hiromasa Fujii , Tetsushi Abe , Shigeru Tomisato , Hirohito Suda
IPC分类号： H03H7/30
CPC分类号： H04L25/03171 , H04L1/06 , H04L2025/03375
摘要： In an adaptive equalizing apparatus for MIMO (Multi-Input Multi-Output) turbo reception, an interference component in a received signal is subtracted therefrom using a replica of an interference component in an interference canceling part 31n, the subtracted output is filtered by a filter 32n, to cancel the remaining interference component and to perform multi-path combining, and in a degree-of-interference-cancellation estimation part 41n the degree of interference cancellation β(i) is set such that it is 0 for the iteration number i=1, 0.8+0.05 (i−1) for 5≧i≧2 and 1 for i≧6, and at the beginning of each iteration filter coefficients are calculated using β(i) and a channel estimation value in a filter coefficient calculating part 33n and the filter coefficient thus calculated are set in the filter 32n. An average value of soft decision symbol estimation values used in the interference canceling part may be used as β.
摘要翻译：在用于MIMO（多输入多输出）turbo接收的自适应均衡装置中，使用干扰消除部分31中的干扰分量的副本从其中减去接收信号中的干扰分量，减法输出由滤波器32滤波，以抵消剩余的干扰分量并执行多路径组合，并且在干涉消除度估计部分41 对于5> = i> = 2，对于迭代数i = 1,0.8 + 0.05（i-1），对于i> = 6，设置干扰消除度β（i）的程度为0 ，并且在每次迭代开始时，使用β（i）和滤波器系数计算部分33 N n中的信道估计值来计算滤波器系数，并且将如此计算的滤波器系数设置在滤波器32 SUB> n 。在干扰消除部分中使用的软判决符号估计值的平均值可以用作β。

8. 发明申请

US20050094552A1 OFDM signal frame generator, transmitter, signal transmission system and OFDM signal frame generating method 有权
标题翻译： OFDM信号帧发生器，发射机，信号传输系统和OFDM信号帧生成方法
公开(公告)号：US20050094552A1
公开(公告)日：2005-05-05
申请号：US10865817
申请日：2004-06-14
申请人： Tetsushi Abe , Hirohito Suda , Shigeru Tomisato , Hiromasa Fujii , Takefumi Yamada
发明人： Tetsushi Abe , Hirohito Suda , Shigeru Tomisato , Hiromasa Fujii , Takefumi Yamada
IPC分类号： H04L27/26 , H04B3/10 , H04J11/00
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0046 , H04L5/006
摘要： An object of the present invention is, in a communication path of which received signal quality is extremely poor, to prevent such a state of the communication failure. To a frame generator 13 in a transmitter 10, which transmits OFDM signal, a pilot & data arrangement format determiner 20, which determines pilot & data arrangement format of an OFDM signal based on the value of received signal quality at a receiver 30, a pilot symbol number determiner 19, which determines the number of pilot symbols based on the value of received signal quality, and a power amplification rate determiner 18, which determines power amplification rate based on the value of received signal quality, are newly provided. Thereby, it is possible to change the pilot & data arrangement format, the number of pilot symbols and the power amplification rate depending on the value of received signal quality to generate transmission signal frame of the OFDM signal. Owing to this, even in a channel of which received signal quality is poor, it is possible to satisfactorily reduce the transmission rate using adaptive modulation technique and maintain the channel estimation accuracy to a satisfactory level, and thus it is possible to prevent such a state of the communication failure.
摘要翻译：本发明的目的是在接收信号质量极差的通信路径中，防止这种通信失败的状态。导频和数据排列格式确定器20向发射机10发送OFDM信号的帧发生器13，导频和数据排列格式确定器20基于接收机30处的接收信号质量的值确定OFDM信号的导频和数据排列格式，符号数确定器19，其基于接收信号质量的值来确定导频符号的数量，并且基于接收信号质量的值确定功率放大率的功率放大率确定器18。因此，可以根据接收信号质量的值来改变导频和数据排列格式，导频符号数和功率放大率，以产生OFDM信号的发送信号帧。由此，即使在接收信号质量差的信道中，也可以使用自适应调制技术令人满意地降低传输速率，并且将信道估计精度保持在令人满意的水平，因此可以防止这种状态的通信故障。

9. 发明授权

US07151808B2 MIMO receiver and method of reception therefor 失效
标题翻译： MIMO接收机及其接收方法
公开(公告)号：US07151808B2
公开(公告)日：2006-12-19
申请号：US10386571
申请日：2003-03-13
申请人： Hiromasa Fujii , Tetsushi Abe , Shigeru Tomisato , Hirohito Suda
发明人： Hiromasa Fujii , Tetsushi Abe , Shigeru Tomisato , Hirohito Suda
IPC分类号： H04L1/02 , H03D3/22
CPC分类号： H04B7/005 , H04L2025/03375
摘要： The accuracy of an equalization start timing, an equalization duration and a channel estimation is improved in an application including an increased number of users. An equalization start timing t0, an equalization duration te and channel H estimation are performed for each user signal, and using these, received signal replicas Re1 ro ReN for the respective users are generated. The replicas are subtracted from the received signal to provide an error signal, and Re1 to ReN are added to Es to provide an interference suppressed received signals for the users 1 to N. to, te, H and Re1 to ReN are generated from these to generate Es in a repeated fashion to improve the accuracy of t0, te and H.
摘要翻译：在包括用户数量增加的应用中，改善了均衡开始定时，均衡持续时间和信道估计的精度。对于每个用户信号执行均衡开始定时t 0，均衡持续时间t和信道H估计，并且使用这些，接收信号副本Re 1 N 生成各个用户。从接收到的信号中减去副本以提供误差信号，并且向Es提供Re 1，以向用户1提供干扰抑制的接收信号，从这些生成N到，te，H和Re 1到Re N以重复的方式产生Es以提高t 0，te和H的精度。

10. 发明申请

US20060031583A1 Communication system, communication method, transmission device, reception device, and control program 失效
标题翻译：通信系统，通信方式，传输设备，接收设备和控制程序
公开(公告)号：US20060031583A1
公开(公告)日：2006-02-09
申请号：US10535859
申请日：2003-11-20
申请人： Hiromasa Fujii , Shigeru Tomisato , Hirohito Suda , Tetsuhi Abe , Takefumi Yamada
发明人： Hiromasa Fujii , Shigeru Tomisato , Hirohito Suda , Tetsuhi Abe , Takefumi Yamada
IPC分类号： G06F15/16
CPC分类号： H04L27/2602 , H04B1/7103 , H04L27/2607 , H04L27/2608 , H04L27/261 , H04L27/2613 , H04L27/2626 , H04L27/2656 , H04L27/2662 , H04L27/2688
摘要： An object of the present invention is to provide a communications system etc., which can reduce the influence of interference from other systems which results from a difference in symbol length, in an area where a plurality of systems using different transmission methods are mixed. The present invention relates to a communications system in which a plurality of systems share the same frequency bandwidth so as to transmit information symbols. One of the plurality of systems 1 includes an identifying unit 109 configured to identify the symbol length of an information symbol transmitted in a different system 2; and an adjusting unit 102, 107 configured to adjust the symbol length of an information symbol to be transmitted, in accordance with an identified symbol length.
摘要翻译：本发明的目的是提供一种通信系统等，其可以在混合使用不同传输方式的多个系统的区域中减少由于符号长度不同而引起的其他系统的干扰的影响。本发明涉及一种通信系统，其中多个系统共享相同的频率带宽以便发送信息符号。多个系统1中的一个包括识别单元109，其被配置为识别在不同系统2中发送的信息符号的符号长度; 以及调整单元102,107，其被配置为根据所识别的符号长度来调整要发送的信息符号的符号长度。

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