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1. 发明申请

US20010017896A1 Digital radio communication system and method 有权
标题翻译：数字无线电通信系统及方法
公开(公告)号：US20010017896A1
公开(公告)日：2001-08-30
申请号：US09789623
申请日：2001-02-22
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Yutaka Murakami , Shinichiro Takabayashi , Katsuaki Abe , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04K001/10 , H04L027/28 , H04L005/12 , H04L023/02
CPC分类号： H04L27/26 , H04L1/0025 , H04L27/34
摘要： QPSK modulated quadrature baseband signal generating section 301 generates a QPSK modulated quadrature baseband signal. 8 PSK modulated quadrature baseband signal generating section 302 generates an 8 PSK modulated quadrature baseband signal. Based on the modulation scheme determined information, in-phase component switching section 304 and quadrature component switching section 305 switch between the QPSK modulated quadrature baseband signal, 8 PSK modulated quadrature baseband signal and pilot symbol to output to radio section 306. Radio section 306 performs the predetermined radio processing on the baseband signal to output a transmission signal. The transmission signal is amplified in power amplifier 307, and the amplified transmission signal is transmitted from transmission antenna 309. It is thereby possible to take into account both the improvement in the data transmission rate, and the benefit and convenience in terminals.
摘要翻译： QPSK调制正交基带信号生成部301生成QPSK调制正交基带信号。 8 PSK调制正交基带信号生成部302生成8 PSK调制正交基带信号。基于调制方式确定的信息，同相分量切换部304和正交分量切换部305在QPSK调制正交基带信号，8PSK调制正交基带信号和导频符号之间切换，输出到无线部306。无线部306执行对基带信号进行预定的无线电处理以输出发送信号。在功率放大器307中放大发送信号，从发送天线309发送放大的发送信号。由此，能够兼顾数据传输速率的提高以及终端的利益和便利性。

2. 发明申请

US20040247043A1 Transmission apparatus, reception apparatus and digital radio communication method 有权
标题翻译：发送装置，接收装置和数字无线通信方式
公开(公告)号：US20040247043A1
公开(公告)日：2004-12-09
申请号：US10827445
申请日：2004-04-20
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Yutaka Murakami , Shinichiro Takabayashi , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04L027/04
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 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 the digital transmission signal according to a predetermined modulation system 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，该帧配置确定器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。第二符号发生器根据预定的调制系统调制数字传输信号，并产生第二符号，第二符号包括第二正交基带信号。

3. 发明申请

US20040161054A1 Apparatus and method for digital wireless communications 有权
标题翻译：数字无线通信的装置和方法
公开(公告)号：US20040161054A1
公开(公告)日：2004-08-19
申请号：US10781839
申请日：2004-02-20
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Yutaka Murakami , Shinichiro Takabayashi , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04L005/12 , H04L023/02 , H04L027/36 , H04L027/20
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： A digital wireless communication apparatus includes a first modulator that modulates a pilot symbol according to a first modulation scheme, and a second modulator that modulates specific symbols according to a second modulation scheme, the second modulation scheme being different than the first modulation scheme. A third modulator modulates symbols other than the pilot symbol and the specific symbols according to a third modulation scheme, the third modulation scheme being different than the first and second modulation schemes. A timing controller controls timing such that the specific symbols are inserted immediately before and after the pilot symbol. The signal points of the specific symbols are allocated on an imaginary line that connects the origin point and a signal point of the pilot symbol on a signal space diagram.
摘要翻译：数字无线通信装置包括根据第一调制方案调制导频符号的第一调制器和根据第二调制方案调制特定符号的第二调制器，所述第二调制方案不同于第一调制方案。第三调制器根据第三调制方案调制除导频符号和特定符号之外的符号，第三调制方案不同于第一和第二调制方案。定时控制器控制定时，使得在导频符号之前和之后立即插入特定符号。特定符号的信号点分配在连接信号空间图上的导频符号的原点和信号点的假想线上。

4. 发明申请

US20030194021A1 Apparatus and method for digital wireless communications 有权
公开(公告)号：US20030194021A1
公开(公告)日：2003-10-16
申请号：US10445808
申请日：2003-05-28
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Yutaka Murakami , Shinichiro Takabayashi , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04L027/36
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.

5. 发明申请

US20020126764A1 Radio communication apparatus 有权
标题翻译：无线通信装置
公开(公告)号：US20020126764A1
公开(公告)日：2002-09-12
申请号：US09978662
申请日：2001-10-18
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Yutaka Murakami , Shinichiro Takabayashi , Katsuaki Abe , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04L027/04 , H04L027/12 , H04L027/20 , H04L027/06 , H04L027/14 , H04L027/22
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： In a radio communication method whereby adaptive modulation is performed, a method is used whereby pilot symbol signal points are arranged in the in-phase-quadrature plane (IQ plane) so that the reception sensitivity of a receiving apparatus is made optimal in the respective modulation methods while maintaining the average transmission output power of the transmitting apparatus at a fixed level. By this means, it is possible to arrange pilot symbol signal points and improve the reception sensitivity characteristics of a receiving apparatus while maintaining the average transmission output power of the transmitting apparatus at a fixed level.
摘要翻译：在进行自适应调制的无线电通信方法中，使用导频符号信号点被布置在同相正交平面（IQ平面）中的方法，使得接收装置的接收灵敏度在各自的调制同时将发送装置的平均发送输出功率维持在固定水平。通过这种方式，可以在将发送装置的平均发送输出功率维持在固定水平的同时，配置导频码元信号点，提高接收装置的接收灵敏度特性。

6. 发明申请

US20040121827A1 Receiving apparatus, transmitting apparatus, and reception method 有权
标题翻译：接收装置，发送装置和接收方法
公开(公告)号：US20040121827A1
公开(公告)日：2004-06-24
申请号：US10704653
申请日：2003-11-12
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Yutaka Murakami , Katsuaki Abe , Kiyotaka Kobayashi , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04B001/04
CPC分类号： H04B7/043 , H04B7/0621 , H04B7/0848 , H04B17/24 , H04B17/318 , H04W52/42
摘要： Channel fluctuation values on propagation paths of modulated signals transmitted from a plurality of antennas are estimated, an eigenvalue of a channel fluctuation matrix created with the above-mentioned channel fluctuation values as elements is found in order to relate antenna received signals to modulated signals, and using that eigenvalue, receiving antenna selection, combining of modulated signals, and weighting processing on soft decision decoded values, are performed, and modulated signals are demodulated. By this means, it is possible to perform demodulation processing based on the effective reception power of a modulated signal (that is to say, the essential reception power, of the reception power obtained by a receiving apparatus, that can be effectively used when demodulating a modulated signal), enabling the precision of demodulation of modulated signals to be improved.
摘要翻译：估计从多个天线发送的调制信号的传播路径上的信道波动值，找到以上述信道变动值作为要素而生成的信道变动矩阵的特征值，以将天线接收信号与调制信号相关联，使用该特征值，接收天线选择，调制信号的组合和对软判决解码值的加权处理，并且调制信号被解调。通过这种方式，可以基于调制信号（也就是接收设备获得的接收功率的基本接收功率）的有效接收功率进行解调处理，当解调调制信号），能够提高调制信号的解调精度。

7. 发明申请

US20040095899A1 Pilot signal transmission technique and digital communication system using same 审中-公开
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：US20040095899A1
公开(公告)日：2004-05-20
申请号：US10601591
申请日：2003-06-24
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka , Morikazu Sagawa
IPC分类号： H04B007/00
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。

8. 发明申请

US20030194020A1 Apparatus and method for digital wireless communications 有权
公开(公告)号：US20030194020A1
公开(公告)日：2003-10-16
申请号：US10427992
申请日：2003-05-02
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Yutaka Murakami , Shinichiro Takabayashi , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H04L027/36
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.

9. 发明申请

US20030067995A1 Transmission apparatus 审中-公开
标题翻译：传输装置
公开(公告)号：US20030067995A1
公开(公告)日：2003-04-10
申请号：US09968024
申请日：2001-10-02
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., Ltd.
发明人： Akihiko Matsuoka , Masayuki Orihashi , Morikazu Sagawa , Kenichi Takahashi , Kouei Misaizu
IPC分类号： H04K001/02 , H04L025/03 , H04L025/49
CPC分类号： H03F1/3247 , H03C3/406 , H03F1/3258 , H03F1/3294 , H03F2200/57 , H03F2201/3233 , H04L27/368
摘要： A wireless communication system includes an amplitude limiting section that limits an amplitude of a sequence of signals input for transmission and a nonlinear distortion compensating section compensates nonlinear distortion of the sequence of signals output from the amplitude limiting section. A digital wireless communication method is also provided.
摘要翻译：无线通信系统包括限制输入信号序列的幅度的幅度限制部分，非线性失真补偿部分补偿从振幅限制部分输出的信号序列的非线性失真。还提供了数字无线通信方法。

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