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1. 发明申请

US20110200086A1 RADIO COMMUNICATION APPARATUS CAPABLE OF SWITCHING MODULATION SCHEMES 有权
标题翻译：无线电通信设备可开关调制方案
公开(公告)号：US20110200086A1
公开(公告)日：2011-08-18
申请号：US13093301
申请日：2011-04-25
申请人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Katsuaki ABE , Masayuki ORIHASHI , Akihiko MATSUOKA
发明人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Katsuaki ABE , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC分类号： H04W24/08 , H04L27/36
CPC分类号： H04L27/3405 , H03F1/02 , H03F3/24 , H04B1/0475 , H04B2001/0416 , H04B2001/045 , H04L1/0003 , H04L27/2082 , H04L27/2601 , H04L27/34 , H04L27/3494 , H04L2203/00
摘要： A transmitting apparatus includes a modulation signal generating section that generates a modulation signal by modulating transmission data using one of a plurality of modulation schemes. The plurality of modulation schemes include a first modulation scheme, a second modulation scheme, and a third modulation scheme, where the first modulation scheme has maximum m-ary modulation value, the second modulation scheme has a lower m-ary modulation value than the first modulation scheme, and the third modulation scheme has a lower m-ary modulation value than the second modulation scheme. The transmitting apparatus also includes a pilot signal generating section that generates a pilot signal having one of a plurality of amplitudes, the pilot signal having a lower amplitude than a maximum amplitude of the first modulation scheme. The transmitting apparatus further includes a selection section that selects the modulation signal or the pilot signal according to a frame timing signal and generates a transmission quadrature baseband signal, a radio section that converts the transmission quadrature baseband signal to a radio signal, an amplifying section that amplifies the radio signal, and an antenna section that transmits the amplified radio signal.
摘要翻译：发送装置包括调制信号生成部，其通过使用多个调制方式之一调制发送数据来生成调制信号。多个调制方案包括第一调制方案，第二调制方案和第三调制方案，其中第一调制方案具有最大的m元调制值，第二调制方案具有比第一调制方式更低的第m个调制方式调制方式，并且第三调制方式具有比第二调制方案更低的微秒调制值。发送装置还包括导频信号生成部，其生成具有多个幅度中的一个的导频信号，导频信号的幅度比第一调制方式的最大幅度小。发送装置还包括：选择部，其根据帧定时信号选择调制信号或导频信号，生成发送正交基带信号，将发送正交基带信号转换成无线信号的无线部;放大部，放大无线电信号，以及发射放大的无线电信号的天线部分。

2. 发明申请

US20120236962A1 RADIO COMMUNICATION APPARATUS CAPABLE OF SWITCHING MODULATION SCHEMES 有权
标题翻译：无线电通信设备可开关调制方案
公开(公告)号：US20120236962A1
公开(公告)日：2012-09-20
申请号：US13486244
申请日：2012-06-01
申请人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Katsuaki ABE , Masayuki ORIHASHI , Akihiko MATSUOKA
发明人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Katsuaki ABE , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC分类号： H04L27/00
CPC分类号： H04L27/3405 , H03F1/02 , H03F3/24 , H04B1/0475 , H04B2001/0416 , H04B2001/045 , H04L1/0003 , H04L27/2082 , H04L27/2601 , H04L27/34 , H04L27/3494 , H04L2203/00
摘要： A transmitting apparatus, includes a signal generator that generates a modulation signal by modulating transmission data using one of a plurality of modulation schemes, a first modulation scheme having a higher m-ary modulation value than other modulation schemes and a pilot signal generator generates a pilot signal. An orthogonal frequency division multiplexing (OFDM) signal generator generates an OFDM signal by selecting the modulation signal and the pilot signal according to the frame timing signal. The OFDM signal is converted to a radio signal, is amplified and is transmitted to an antenna. The pilot signal is inserted in the OFDM signal per a predetermined OFDM symbol and per a predetermined subcarrier and has a lower amplitude than a maximum amplitude of the first modulation scheme in an in-phase-quadrature (IQ) plane.
摘要翻译：一种发送装置，包括：信号发生器，其通过使用多个调制方式之一调制发送数据来生成调制信号;第一调制方式，具有比其他调制方式更高的微分调制值，并且导频信号发生器产生导频信号。正交频分复用（OFDM）信号发生器通过根据帧定时信号选择调制信号和导频信号来生成OFDM信号。 OFDM信号被转换为无线电信号，被放大并被发送到天线。导频信号按照预定的OFDM符号和每个预定的子载波插入OFDM信号中，并且具有比同相正交（IQ）平面中的第一调制方案的最大幅度更低的振幅。

3. 发明申请

US20100266059A1 RADIO COMMUNICATION APPARATUS CAPABLE OF SWITCHING MODULATION SCHEMES 有权
标题翻译：无线电通信设备可开关调制方案
公开(公告)号：US20100266059A1
公开(公告)日：2010-10-21
申请号：US12757509
申请日：2010-04-09
申请人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Katsuaki ABE , Masayuki ORIHASHI , Akihiko MATSUOKA
发明人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Katsuaki ABE , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC分类号： H04L27/36 , H04L23/02
CPC分类号： H04L27/3405 , H03F1/02 , H03F3/24 , H04B1/0475 , H04B2001/0416 , H04B2001/045 , H04L1/0003 , H04L27/2082 , H04L27/2601 , H04L27/34 , H04L27/3494 , H04L2203/00
摘要： A radio communication apparatus that is capable of switching modulation schemes. The radio communication apparatus includes a QPSK modulation signal generator, a QAM modulation signal generator, a transmission radio, and a common transmission power amplifier. The QPSK modulation signal generator modulates transmission data by a QPSK modulation scheme and outputs a QPSK modulation signal. The QAM modulation signal generator modulates transmission data by a QAM scheme and outputs a QAM modulation signal. The transmission radio receives the QPSK modulation signal or the QAM modulation signal and outputs a transmission signal, which is amplified by the common transmission power amplifier. The QPSK modulation signal generator and the QAM modulation signal generator each output signal component that make an average transmission power of the QAM modulation signal in the common transmission power amplifier smaller than an average transmission power of the QPSK modulation signal in the common transmission power amplifier.
摘要翻译：一种能够切换调制方案的无线通信装置。无线通信装置包括QPSK调制信号发生器，QAM调制信号发生器，发送无线电和公共发送功率放大器。 QPSK调制信号生成器通过QPSK调制方式来调制发送数据并输出QPSK调制信号。 QAM调制信号发生器通过QAM方式来调制发送数据并输出QAM调制信号。发送无线电接收QPSK调制信号或QAM调制信号，并输出由公共发送功率放大器放大的发送信号。 QPSK调制信号发生器和QAM调制信号发生器使公共发送功率放大器中的QAM调制信号的平均发送功率小于公共发送功率放大器中的QPSK调制信号的平均发送功率的各输出信号分量。

4. 发明申请

US20110085590A1 METHOD FOR DIGITAL WIRELESS COMMUNICATIONS 有权
标题翻译：数字无线通信方法
公开(公告)号：US20110085590A1
公开(公告)日：2011-04-14
申请号：US12971564
申请日：2010-12-17
申请人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
发明人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC分类号： H04B17/00
CPC分类号： H04L7/04 , H04L7/06 , H04L27/0008 , H04L27/206 , H04L27/34 , H04L27/3405 , H04L27/3455 , H04L2027/0024 , H04L2027/0087 , H04L2027/0093
摘要： In a multivalue modulation type with one pilot symbol inserted for every 3 or more symbols, signal points of each one symbol immediately before and after a pilot symbol are modulated using a modulation type different from that for pilot symbols. In this way, it is possible to suppress deterioration of the accuracy in estimating the reference phase and amount of frequency offset by pilot symbols and improve the bit error rate characteristic in the signal to noise ratio in quasi-coherent detection with symbols whose symbol synchronization is not completely established.
摘要翻译：在每3个或更多符号插入一个导频符号的多值调制类型中，使用与导频符号不同的调制类型来调制紧接在导频符号之前和之后的每个符号的信号点。以这种方式，可以抑制通过导频符号估计基准相位和频率偏移量的精度的劣化，并且通过符号同步为符号的符号来改善准相干检测中的信噪比中的误码率特性不完全成立

5. 发明申请

US20080317148A1 WIRELESS COMMUNICATIONS APPARATUS AND WIRELESS COMMUNICATION METHOD 有权
标题翻译：无线通信设备和无线通信方法
公开(公告)号：US20080317148A1
公开(公告)日：2008-12-25
申请号：US12175532
申请日：2008-07-18
申请人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
发明人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC分类号： H04L27/28
CPC分类号： H04L5/0058 , H04B1/692 , H04L1/0001 , H04L1/0003 , H04L5/0007 , H04L5/0021 , H04L5/006 , H04L5/0064 , H04L5/0075 , H04L5/0092 , H04L27/0008 , H04L27/2601 , H04W72/0453
摘要： The invention performs orthogonal frequency division multiplex processing on a transmission signal to form an OFDM modulation signal (daubed in FIG.) and performs orthogonal frequency division multiplex processing and code division multiple access processing on a transmission signal to form an OFDM-CDM modulation signal (shaded in FIG.) to transmit the OFDM modulation signal and the OFDM-CDM modulation signal, which makes it possible to transmit data in a very high rate using the OFDM modulation signal while making it possible to transmit data in a higher quality using the OFDM-CDM modulation signal than using the OFDM-modulation signal, although it is slightly inferior to OFDM modulation in terms of high rate transmission.
摘要翻译：本发明对传输信号进行正交频分复用处理以形成OFDM调制信号（在图中涂覆），并对传输信号执行正交频分复用处理和码分多址处理，以形成OFDM-CDM调制信号（发送OFDM调制信号和OFDM-CDM调制信号，这使得可以使用OFDM调制信号以非常高的速率发送数据，同时可以使用OFDM来传输更高质量的数据 -CDM调制信号比使用OFDM调制信号，尽管在高速率传输方面略逊于OFDM调制。

6. 发明申请

US20090011699A1 TRANSMISSION APPARATUS, RECEPTION APPARATUS AND DIGITAL RADIO COMMUNICATION METHOD 有权
标题翻译：传输装置，接收装置和数字无线电通信方法
公开(公告)号：US20090011699A1
公开(公告)日：2009-01-08
申请号：US12206427
申请日：2008-09-08
申请人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
发明人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC分类号： H04H40/00
CPC分类号： H04L27/12 , H04B1/38 , H04L1/0003 , H04L1/0006 , H04L27/206 , H04L27/34 , H04L27/3455
摘要： A digital radio communication method includes selecting a modulation scheme for a transmission data signal from among a plurality of modulation schemes. The transmission data signal is modulated according to the selected modulation scheme to generate a first symbol, the first symbol being a first quadrature baseband signal. Further, a pilot signal is modulated according to a specific modulation scheme to generate a second symbol, the second symbol being a second quadrature baseband signal.
摘要翻译：数字无线电通信方法包括从多个调制方案中选择用于发送数据信号的调制方案。传输数据信号根据所选择的调制方式被调制以产生第一符号，第一符号是第一正交基带信号。此外，根据特定调制方案调制导频信号以产生第二符号，第二符号是第二正交基带信号。

7. 发明申请

US20080095270A1 TRANSMISSION APPARATUS, RECEPTION APPARATUS AND DIGITAL RADIO COMMUNICATION METHOD 有权
标题翻译：传输装置，接收装置和数字无线电通信方法
公开(公告)号：US20080095270A1
公开(公告)日：2008-04-24
申请号：US11955443
申请日：2007-12-13
申请人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
发明人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC分类号： H04L27/20 , H04L27/00
CPC分类号： H04L27/12 , H04B1/38 , H04L1/0003 , H04L1/0006 , H04L27/206 , H04L27/34 , H04L27/3455
摘要： A transmission apparatus includes a frame configuration determiner that determines a modulation system, from among a plurality of modulation systems, based on a communication situation. A first symbol generator modulates a digital transmission signal, according to the modulation system determined by the frame configuration determiner and generates a first symbol, the first symbol comprising a first quadrature baseband signal. A second symbol generator modulates a known digital transmission signal between a transmitting side and a receiving side and generates a second symbol, the second symbol comprising a second quadrature baseband signal.
摘要翻译：发送装置包括：帧配置确定器，其根据通信情况从多个调制系统中确定调制系统。第一符号发生器根据由帧配置确定器确定的调制方式来调制数字传输信号，并产生第一符号，第一符号包括第一正交基带信号。第二符号发生器在发送侧和接收侧之间调制已知的数字传输信号，并产生第二符号，第二符号包括第二正交基带信号。

8. 发明申请

US20110211475A1 WIRELESS COMMUNICATIONS APPARATUS AND WIRELESS COMMUNICATIONS METHOD 有权
标题翻译：无线通信装置和无线通信方法
公开(公告)号：US20110211475A1
公开(公告)日：2011-09-01
申请号：US13079384
申请日：2011-04-04
申请人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
发明人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC分类号： H04W72/04 , H04W24/00
CPC分类号： H04L5/0058 , H04B1/692 , H04L1/0001 , H04L1/0003 , H04L5/0007 , H04L5/0021 , H04L5/006 , H04L5/0064 , H04L5/0075 , H04L5/0092 , H04L27/0008 , H04L27/2601 , H04W72/0453
摘要： A wireless communication method of a base station that transmits a modulation signal based on an orthogonal frequency division multiplexing scheme to a plurality of terminals. The method includes determining, for each terminal of the plurality of terminals, which subcarrier group or how many symbols along a time axis are to be allocated in a transmission frame, the transmission frame including a first period in which first transmission symbols are arranged and a second period in which second transmission symbols which are different from the first transmission symbols are arranged. The method also includes forming the transmission frame according to a determined allocation, wherein a plurality of symbols on a frequency axis for transmitting N bits (N is a natural number) are arranged within a part of the first period, by using a modulation scheme whereby N bits can be transmitted using one symbol. The method further includes transmitting the modulation signal using the transmission frame.
摘要翻译：一种将基于正交频分复用方案的调制信号发送到多个终端的基站的无线通信方法。该方法包括：确定多个终端中的每个终端在传输帧中哪个子载波组或沿着时间轴分配多少个符号，该传输帧包括其中排列有第一个传输符号的第一周期和其中布置与第一传输符号不同的第二传输符号的第二周期。该方法还包括根据所确定的分配来形成传输帧，其中，在第一周期的一部分内，通过使用调制方案将用于发送N位（N为自然数）的频率轴上的多个符号排列在第一周期的一部分内，可以使用一个符号发送N个位。该方法还包括使用传输帧发送调制信号。

9. 发明申请

US20070268987A1 METHOD FOR DIGITAL WIRELESS COMMUNICATIONS 有权
标题翻译：数字无线通信方法
公开(公告)号：US20070268987A1
公开(公告)日：2007-11-22
申请号：US11831383
申请日：2007-07-31
申请人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
发明人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC分类号： H04L7/04 , H04L27/34
CPC分类号： H04L7/04 , H04L7/06 , H04L27/0008 , H04L27/206 , H04L27/34 , H04L27/3405 , H04L27/3455 , H04L2027/0024 , H04L2027/0087 , H04L2027/0093
摘要： In a multivalue modulation type with one pilot symbol inserted for every 3 or more symbols, signal points of each one symbol immediately before and after a pilot symbol are modulated using a modulation type different from that for pilot symbols. In this way, it is possible to suppress deterioration of the accuracy in estimating the reference phase and amount of frequency offset by pilot symbols and improve the bit error rate characteristic in the signal to noise ratio in quasi-coherent detection with symbols whose symbol synchronization is not completely established.
摘要翻译：在每3个或更多符号插入一个导频符号的多值调制类型中，使用与导频符号不同的调制类型来调制紧接在导频符号之前和之后的每个符号的信号点。以这种方式，可以抑制通过导频符号估计基准相位和频率偏移量的精度的劣化，并且通过符号同步为符号的符号来改善准相干检测中的信噪比中的误码率特性不完全成立

10. 发明申请

US20120082268A1 METHOD FOR DIGITAL WIRELESS COMMUNICATIONS 有权
标题翻译：数字无线通信方法
公开(公告)号：US20120082268A1
公开(公告)日：2012-04-05
申请号：US13324389
申请日：2011-12-13
申请人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
发明人： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC分类号： H04L27/06 , H03D1/24
CPC分类号： H04L7/04 , H04L7/06 , H04L27/0008 , H04L27/206 , H04L27/34 , H04L27/3405 , H04L27/3455 , H04L2027/0024 , H04L2027/0087 , H04L2027/0093
摘要： In a multivalue modulation type with one pilot symbol inserted for every 3 or more symbols, signal points of each one symbol immediately before and after a pilot symbol are modulated using a modulation type different from that for pilot symbols. In this way, it is possible to suppress deterioration of the accuracy in estimating the reference phase and amount of frequency offset by pilot symbols and improve the bit error rate characteristic in the signal to noise ratio in quasi-coherent detection with symbols whose symbol synchronization is not completely established.
摘要翻译：在每3个或更多符号插入一个导频符号的多值调制类型中，使用与导频符号不同的调制类型来调制紧接在导频符号之前和之后的每个符号的信号点。以这种方式，可以抑制通过导频符号估计基准相位和频率偏移量的精度的劣化，并且通过符号同步为符号的符号来改善准相干检测中的信噪比中的误码率特性不完全成立

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