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1. 发明申请

US20080240289A1 PILOT SIGNAL TRANSMISSION TECHNIQUE AND DIGITAL COMMUNICATION SYSTEM USING SAME 审中-公开
标题翻译：引导信号传输技术和数字通信系统
公开(公告)号：US20080240289A1
公开(公告)日：2008-10-02
申请号：US12132817
申请日：2008-06-04
申请人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
发明人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
IPC分类号： H04L27/36
CPC分类号： H04L27/3455
摘要： In a digital communication system such as a mobile radio system, fading distortion is compensated with a raised precision. In a transmitter, pilot signals are regularly inserted in the information signals. The amplitude of the pilot signals are set larger than the maximum possible amplitude of the information signals. The modulation scheme of the pilot signals may be different from that of the information signals. In a receiver, the fading distortion of each of the pilot signals is determined. The fading distortions of the information signals are estimated by interpolation using the determined fading distortion of the pilot signal, and then compensated. The frequency band of each information signal is preferably limited with a roll-off filter with a roll-off coefficient ranging from 0.1 to 0.4.
摘要翻译：在诸如移动无线电系统的数字通信系统中，以提高的精度补偿衰落失真。在发射机中，导频信号被定期插入信息信号中。导频信号的幅度被设定为大于信息信号的最大可能幅度。导频信号的调制方式可能与信息信号的调制方式不同。在接收机中，确定每个导频信号的衰落失真。通过使用确定的导频信号的衰落失真的内插来估计信息信号的衰落失真，然后进行补偿。每个信息信号的频带优选地通过具有从0.1到0.4的滚降系数的滚降滤波器来限制。

2. 发明授权

US06608843B1 Pilot signal transmission technique and digital communication system using same 有权
标题翻译：导频信号传输技术和数字通信系统使用相同
公开(公告)号：US06608843B1
公开(公告)日：2003-08-19
申请号：US09292398
申请日：1999-04-15
申请人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
发明人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
IPC分类号： H04B310
CPC分类号： H04L27/3455
摘要： In a digital communication system such as a mobile radio system, fading distortion is compensated with a raised precision. In a transmitter, pilot signals are regularly inserted in the information signals. The amplitude of the pilot signals are set larger than the maximum possible amplitude of the information signals. The modulation scheme of the pilot signals may be different from that of the information signals. In a receiver, the fading distortion of each of the pilot signals is determined. The fading distortions of the information signals are estimated by interpolation using the determined fading distortion of the pilot signal, and then compensated. The frequency band of each information signal is preferably limited with a roll-off filter with a roll-off coefficient ranging from 0.1 to 0.4.
摘要翻译：在诸如移动无线电系统的数字通信系统中，以提高的精度补偿衰落失真。在发射机中，导频信号被定期插入信息信号中。导频信号的幅度被设定为大于信息信号的最大可能幅度。导频信号的调制方式可能与信息信号的调制方式不同。在接收机中，确定每个导频信号的衰落失真。通过使用确定的导频信号的衰落失真的内插来估计信息信号的衰落失真，然后进行补偿。每个信息信号的频带优选地通过具有从0.1到0.4的滚降系数的滚降滤波器来限制。

3. 再颁专利

USRE43338E1 Modulation method and radio communication system 有权
标题翻译：调制方式和无线电通信系统
公开(公告)号：USRE43338E1
公开(公告)日：2012-05-01
申请号：US12764512
申请日：2010-04-21
申请人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
发明人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
IPC分类号： H04L27/20
CPC分类号： H04L27/0008 , H04L25/0232 , H04L27/34
摘要： An input digital signal is periodically and alternately subjected to first modulation and second modulation, being thereby converted into a pair of a baseband I signal and a baseband Q signal. The first modulation and the second modulation are different from each other. The pair of the baseband I signal and the baseband Q signal are outputted. The first modulation may be at least 8-signal-point modulation while the second modulation may be phase shift keying.
摘要翻译：输入数字信号周期性地交替进行第一调制和第二调制，从而转换成一对基带I信号和基带Q信号。第一调制和第二调制彼此不同。输出一对基带I信号和基带Q信号。第一调制可以是至少8信号点调制，而第二调制可以是相移键控。

4. 发明授权

US07289577B2 Modulation method and radio communication system 有权
标题翻译：调制方式和无线电通信系统
公开(公告)号：US07289577B2
公开(公告)日：2007-10-30
申请号：US11054960
申请日：2005-02-11
申请人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
发明人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
IPC分类号： H03C3/00
CPC分类号： H04L27/0008 , H04L25/0232 , H04L27/34
摘要： An input digital signal is periodically and alternately subjected to first modulation and second modulation, being thereby converted into a pair of a baseband I signal and a baseband Q signal. The first modulation and the second modulation are different from each other. The pair of the baseband I signal and the baseband Q signal are outputted. The first modulation may be at least 8-signal-point modulation while the second modulation may be phase shift keying.
摘要翻译：输入数字信号周期性地交替进行第一调制和第二调制，从而转换成一对基带I信号和基带Q信号。第一调制和第二调制彼此不同。输出一对基带I信号和基带Q信号。第一调制可以是至少8个信号点调制，而第二调制可以是相移键控。

5. 发明授权

US07362824B1 Modulation method and radio communication system 有权
标题翻译：调制方式和无线电通信系统
公开(公告)号：US07362824B1
公开(公告)日：2008-04-22
申请号：US09240632
申请日：1999-02-01
申请人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
发明人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
IPC分类号： H04L27/20
CPC分类号： H04L27/0008 , H04L25/0232 , H04L27/34
摘要： An input digital signal is periodically and alternately subjected to first modulation and second modulation, being thereby converted into a pair of a baseband I signal and a baseband Q signal. The first modulation and the second modulation are different from each other. The pair of the baseband I signal and the baseband Q signal are outputted. The first modulation may be at least 8-signal-point modulation while the second modulation may be phase shift keying.
摘要翻译：输入数字信号周期性地交替进行第一调制和第二调制，从而转换成一对基带I信号和基带Q信号。第一调制和第二调制彼此不同。输出一对基带I信号和基带Q信号。第一调制可以是至少8信号点调制，而第二调制可以是相移键控。

6. 发明申请

US20120236966A1 MODULATION METHOD AND RADIO COMMUNICATION SYSTEM 审中-公开
标题翻译：调制方法和无线电通信系统
公开(公告)号：US20120236966A1
公开(公告)日：2012-09-20
申请号：US13427783
申请日：2012-03-22
申请人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
发明人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
IPC分类号： H04L27/36 , H04L27/20 , H04L27/04
CPC分类号： H04L27/0008 , H04L25/0232 , H04L27/34
摘要： An input digital signal is periodically and alternately subjected to first modulation and second modulation, being thereby converted into a pair of a baseband I signal and a baseband Q signal. The first modulation and the second modulation are different from each other. The pair of the baseband I signal and the baseband Q signal are outputted. The first modulation may be at least 8-signal-point modulation while the second modulation may be phase shift keying.
摘要翻译：输入数字信号周期性地交替进行第一调制和第二调制，从而转换成一对基带I信号和基带Q信号。第一调制和第二调制彼此不同。输出一对基带I信号和基带Q信号。第一调制可以是至少8信号点调制，而第二调制可以是相移键控。

7. 发明授权

US07233630B2 Modulation method and radio communication system 有权
公开(公告)号：US07233630B2
公开(公告)日：2007-06-19
申请号：US10256202
申请日：2002-09-27
申请人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
发明人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
IPC分类号： H03K9/00
CPC分类号： H04L27/0008 , H04L25/0232 , H04L27/34
摘要： An input digital signal is periodically and alternately subjected to first modulation and second modulation, being thereby converted into a pair of a baseband I signal and a baseband Q signal. The first modulation and the second modulation are different from each other. The pair of the baseband I signal and the baseband Q signal are outputted. The first modulation may be at least 8-signal-point modulation while the second modulation may be phase shift keying.

8. 发明申请

US20050152474A1 Modulation method and radio communicaiton system 有权
标题翻译：调制方式和无线电通信系统
公开(公告)号：US20050152474A1
公开(公告)日：2005-07-14
申请号：US11054960
申请日：2005-02-11
申请人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
发明人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
IPC分类号： H04L27/00 , H04L27/34 , H04L27/20
CPC分类号： H04L27/0008 , H04L25/0232 , H04L27/34
摘要： An input digital signal is periodically and alternately subjected to first modulation and second modulation, being thereby converted into a pair of a baseband I signal and a baseband Q signal. The first modulation and the second modulation are different from each other. The pair of the baseband I signal and the baseband Q signal are outputted. The first modulation may be at least 8-signal-point modulation while the second modulation may be phase shift keying.
摘要翻译：输入数字信号周期性地交替进行第一调制和第二调制，从而转换成一对基带I信号和基带Q信号。第一调制和第二调制彼此不同。输出一对基带I信号和基带Q信号。第一调制可以是至少8信号点调制，而第二调制可以是相移键控。

9. 发明授权

US06418173B1 Transmission Apparatus 失效
标题翻译：传输装置
公开(公告)号：US06418173B1
公开(公告)日：2002-07-09
申请号：US09101443
申请日：1998-07-15
申请人： Akihiko Matsuoka , Masayuki Orihashi , Morikazu Sagawa , Kenichi Takahashi , Kouei Misaizu
发明人： Akihiko Matsuoka , Masayuki Orihashi , Morikazu Sagawa , Kenichi Takahashi , Kouei Misaizu
IPC分类号： H04K102
CPC分类号： H03F1/3247 , H03C3/406 , H03F1/3258 , H03F1/3294 , H03F2200/57 , H03F2201/3233 , H04L27/368
摘要： Nonlinear distortion compensating data is calculated by approximation equations at a compensating coefficient calculation section using an amplitude value of transmission quadrature base band signals obtained by a power calculating section, wherein by carrying out nonlinear distortion compensation at a nonlinear distortion compensating section using the data, it is possible to compensate nonlinear distortion generated in an amplifier of the transmission system without use of any memory table, and a nonlinear distortion compensating section can be obtained, which has a great effect of decrease distortion.
摘要翻译：非线性失真补偿数据由补偿系数计算部使用由功率计算部获得的发送正交基带信号的振幅值来计算，其中，通过使用该数据在非线性失真补偿部进行非线性失真补偿，可以补偿在传输系统的放大器中产生的非线性失真而不使用任何存储表，并且可以获得非线性失真补偿部分，其具有减小失真的很大的效果。

10. 发明授权

US06324221B1 Transmitter 失效
公开(公告)号：US06324221B1
公开(公告)日：2001-11-27
申请号：US09101443
申请日：1998-07-15
申请人： Akihiko Matsuoka , Masayuki Orihashi , Morikazu Sagawa , Kenichi Takahashi , Kouei Misaizu
发明人： Akihiko Matsuoka , Masayuki Orihashi , Morikazu Sagawa , Kenichi Takahashi , Kouei Misaizu
IPC分类号： H04K102
摘要： Nonlinear distortion compensating data is calculated by approximation equations at a compensating coefficient calculation section using an amplitude value of transmission quadrature base band signals obtained by a power calculating section, wherein by carrying out nonlinear distortion compensation at a nonlinear distortion compensating section using the data, it is possible to compensate nonlinear distortion generated in an amplifier of the transmission system without use of any memory table, and a nonlinear distortion compensating section can be obtained, which has a great effect of decrease distortion.

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