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1. 发明授权

US06359875B1 CDMA receiving apparatus 失效
标题翻译： CDMA接收装置
公开(公告)号：US06359875B1
公开(公告)日：2002-03-19
申请号：US09084830
申请日：1998-05-26
申请人： Hajime Hamada , Yasuyuki Oishi , Hidenobu Fukumasa , Koji Matsuyama
发明人： Hajime Hamada , Yasuyuki Oishi , Hidenobu Fukumasa , Koji Matsuyama
IPC分类号： H04B7216
CPC分类号： H04B1/707 , H04B2201/70707
摘要： A CDMA receiving apparatus receives a direct sequence CDMA signal produced through QPSK spreading modulation, performs coherent detection of the direct sequence CDMA signal, and despreads the signals, obtained through the coherent detection, through a despreading portion. The despreading portion comprises a selector portion. The selector portion selects signals as a demodulated and despread in-phase output signal and a demodulated and despread quadrature output signal, in accordance with despreading codes, from demodulated in-phase and quadrature signals obtained through the coherent detection, and an inverted in-phase and quadrature signals obtained as a result of the signs of the demodulated in-phase and quadrature signals being inverted.
摘要翻译： CDMA接收装置接收通过QPSK扩展调制产生的直接序列CDMA信号，执行直接序列CDMA信号的相干检测，并且通过去扩展部分解调通过相干检测获得的信号。解扩部分包括选择器部分。选择器部分根据去扩展码从解调的通过相干检测获得的同相和正交信号中选择信号作为解调和去扩展的同相输出信号和解调和去扩展的正交输出信号，以及反相同相并且作为被解调的同相和正交信号的符号的结果获得的正交信号被反转。

2. 发明授权

US06198731B1 Radiocommunication apparatus, and radiocommunication system 失效
标题翻译：无线电通信装置和无线电通信系统
公开(公告)号：US06198731B1
公开(公告)日：2001-03-06
申请号：US08995252
申请日：1997-12-19
申请人： Hajime Hamada , Yasuyuki Oishi , Kazuo Nagatani , Hidenobu Fukumasa , Yoshihiko Asano
发明人： Hajime Hamada , Yasuyuki Oishi , Kazuo Nagatani , Hidenobu Fukumasa , Yoshihiko Asano
IPC分类号： H04B7216
CPC分类号： H04B1/707 , H04B7/2628
摘要： There are disclosed a radiocommunication apparatus and a radiocommunication system. There are provided a receiving section capable of receiving a plurality of types of signals which have been spread through use of different spread code information according to a CDMA scheme in a transmitting-side radiocommunication apparatuses; and a spread demodulation section which carries out despread processing for the common signal portions of the plurality of types of signals received by the receiving section through use of a composite spread code formed from a plurality of spread codes. Accordingly, it becomes possible to significantly improve the quality of received signals.
摘要翻译：公开了一种无线电通信装置和无线电通信系统。提供了一种能够在发送侧无线电通信装置中接收根据CDMA方案通过使用不同扩展码信息而扩展的多种类型的信号的接收部分; 以及扩展解调部分，通过使用由多个扩展码形成的复合扩展码，对由接收部分接收的多种类型的信号的公共信号部分进行解扩处理。因此，可以显着提高接收信号的质量。

3. 发明授权

US07376114B2 Code multiplexing transmitting apparatus 有权
标题翻译：码复用发送装置
公开(公告)号：US07376114B2
公开(公告)日：2008-05-20
申请号：US10272660
申请日：2002-10-17
申请人： Kazuo Nagatani , Yasuyuki Oishi , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
发明人： Kazuo Nagatani , Yasuyuki Oishi , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04L5/12 , H04L27/12 , H04B7/216 , H04J13/00
CPC分类号： H04J13/0003 , H04B1/707 , H04B2201/70706 , H04J13/0051 , H04J13/18
摘要： A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spectrum modulating unit for each channel includes a phase shifter for shifting, by a predetermined angle channel by channel, the phase of a position vector of the spread-spectrum modulated signal of each channel. As the result of such phase control, the phases of pilot signal portions of the spread-spectrum modulated signals of the respective channels are shifted relative to one another so that the peak values of the code-multiplexed signal can be suppressed.
摘要翻译：扩频编码多路复用发送装置通过扩展彼此不同的码来对多个信道的发送数据进行扩频调制，合成各个信道的扩频信号，并发送合成的扩频调制信号。用于每个通道的扩频调制单元包括移相器，用于以预定的角度逐个通道移位每个通道的扩频调制信号的位置矢量的相位。作为这种相位控制的结果，各通道的扩频调制信号的导频信号部分的相位彼此相对移位，从而可以抑制码复用信号的峰值。

4. 发明授权

US06791965B2 Code multiplexing transmitting apparatus 有权
公开(公告)号：US06791965B2
公开(公告)日：2004-09-14
申请号：US10272635
申请日：2002-10-17
申请人： Kazuo Nagatani , Yasuyuki Oishi , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
发明人： Kazuo Nagatani , Yasuyuki Oishi , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04B7216
CPC分类号： H04J13/00 , H04B1/707 , H04B2201/70701 , H04B2201/70706 , H04J13/0051 , H04J13/12
摘要： A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spectrum modulating unit for each channel includes a phase shifter for shifting, by a predetermined angle channel by channel, the phase of a position vector of the spread-spectrum modulated signal of each channel. As the result of such phase control, the phases of pilot signal portions of the spread-spectrum modulated signals of the respective channels are shifted relative to one another so that the peak values of the code-multiplexed signal can be suppressed.

5. 发明授权

US6009090A Code multiplexing wireless apparatus 失效
标题翻译：码复用无线装置
公开(公告)号：US6009090A
公开(公告)日：1999-12-28
申请号：US872362
申请日：1997-06-10
申请人： Yasuyuki Oishi , Kazuo Nagatani , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
发明人： Yasuyuki Oishi , Kazuo Nagatani , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04J11/00 , H04B1/707 , H04J13/00 , H04B7/216 , H04B15/00
CPC分类号： H04B1/707 , H04B2201/70706
摘要： A code multiplexing wireless apparatus for amplifying a code-multiplexed signal and then transmitting the amplified signal includes the following to reduce output back-off, improve the efficiency of a power amplifier and suppress broadening of the frequency spectrum: (1) a code-multiplexed signal generator for multiplying each item of transmission data by a spreading code sequence and combining spread-spectrum modulated signals to generate a code-multiplexed signal, (2) a signal-peak suppressing unit for holding the envelope of the code-multiplexed signal below a set level, and (3) a power amplifier for amplifying the code-multiplexed signal and transmitting the amplified code-multiplexed signal from an antenna.
摘要翻译：用于放大代码多路复用信号然后发送放大信号的代码复用无线装置包括以下以减少输出回退，提高功率放大器的效率并抑制频谱的扩展：（1）码复用信号发生器，用于将每个发送数据项乘以扩展码序列，并组合扩频调制信号以产生码复用信号;（2）信号峰值抑制单元，用于将码复用信号的包络保持在低于设置电平，以及（3）功率放大器，用于放大代码复用信号并从天线发送放大的码复用信号。

6. 发明授权

US06826169B1 Code multiplexing transmitting apparatus 有权
标题翻译：码复用发送装置
公开(公告)号：US06826169B1
公开(公告)日：2004-11-30
申请号：US09615862
申请日：2000-07-13
申请人： Kazuo Nagatani , Yasuyuki Oishi , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
发明人： Kazuo Nagatani , Yasuyuki Oishi , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04L512
CPC分类号： H04J13/0003 , H04B1/707 , H04B2201/70706 , H04J13/0051 , H04J13/18
摘要： A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spectrum modulating unit for each channel includes a phase shifter for shifting, by a predetermined angle channel by channel, the phase of a position vector of the spread-spectrum modulated signal of each channel. As the result of such phase control, the phases of pilot signal portions of the spread-spectrum modulated signals of the respective channels are shifted relative to one another so that the peak values of the code-multiplexed signal can be suppressed.
摘要翻译：扩频编码多路复用发送装置通过扩展彼此不同的码来对多个信道的发送数据进行扩频调制，合成各个信道的扩频信号，并发送合成的扩频调制信号。用于每个通道的扩频调制单元包括移相器，用于以预定的角度逐个通道移位每个通道的扩频调制信号的位置矢量的相位。作为这种相位控制的结果，各通道的扩频调制信号的导频信号部分的相位彼此相对移位，从而可以抑制码复用信号的峰值。

7. 发明授权

US6058138A Radio reception system providing improved transmission quality 失效
标题翻译：无线电接收系统提供改善的传输质量
公开(公告)号：US6058138A
公开(公告)日：2000-05-02
申请号：US870606
申请日：1997-06-06
申请人： Hidenobu Fukumasa , Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada
发明人： Hidenobu Fukumasa , Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada
IPC分类号： H04B7/005 , G06F17/15 , H04B7/08 , H04L1/06 , H04B15/00 , H04K1/00 , H04L27/30
CPC分类号： H04B1/7115 , H04B7/0854 , H04L1/06 , H04B1/709
摘要： A radio receiver includes a plurality of demodulating units for demodulating a received radio wave received via a plurality of paths so as to produce respective demodulated signals, and combining units for executing a combination process of synchronizing and combining the demodulated signals produced by the plurality of demodulating units, the combining units correlating the demodulated signals produced by the plurality of demodulating units and excluding from a combination process a demodulated signal that meets a predetermined condition based on a predetermined algorithm.
摘要翻译：无线接收机包括多个解调单元，用于解调通过多个路径接收的接收的无线电波，以便产生各自的解调信号;以及组合单元，用于执行同步和组合由多个解调产生的解调信号单元，所述组合单元将由所述多个解调单元产生的解调信号相关，并且从组合处理除了基于预定算法的满足预定条件的解调信号。

8. 发明授权

US6028894A SIR or SNR measurement apparatus 失效
标题翻译： SIR或SNR测量装置
公开(公告)号：US6028894A
公开(公告)日：2000-02-22
申请号：US923839
申请日：1997-09-04
申请人： Yasuyuki Oishi , Kazuo Nagatani , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
发明人： Yasuyuki Oishi , Kazuo Nagatani , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04L27/18 , H04B1/10 , H04B7/005 , H04B17/00 , H04B17/336 , H04J13/00 , H04L1/20 , H04L5/00
CPC分类号： H04B1/1027 , H04B17/21 , H04B17/336 , H04L1/20 , H04W52/24 , H04W52/08
摘要： SIR measurement for measuring S/N ratio, which is the ratio of a desired signal power to noise power, or S/I ratio, which is the ratio of desired signal power to interference signal power, uses a signal-point position altering unit for taking absolute values of an I component (in-phase component) and Q component (quadrature component) of a received signal to convert the received signal to a signal in the first quadrant of an I-Q orthogonal coordinate system, and for squaring the average value of the converted signal to obtain first average power (desired power) S, a received-power arithmetic unit for calculating the average value of the square of the received signal to obtain second average power, and for subtracting the desired power S from the received power to obtain noise power or interference power I, and a SIR arithmetic unit for calculating S/N ratio or S/I ratio from the desired signal power S and noise power or interference signal power I, and for outputting the ratio calculated.
摘要翻译：作为所需信号功率与噪声功率的比值的S / N比的SIR测量值或作为期望信号功率与干扰信号功率之比的S / I比使用信号点位置改变单元将接收信号的I分量（同相分量）和Q分量（正交分量）的绝对值转换为IQ正交坐标系的第一象限中的信号，并将平均值转换后的信号获得第一平均功率（期望功率）S，接收功率算术单元，用于计算接收信号的平方的平均值以获得第二平均功率，并且从接收功率中减去所需功率S 获得噪声功率或干扰功率I，以及用于根据期望信号功率S和噪声功率或干扰信号功率I计算S / N比或S / I比的SIR算术单元，并且用于输出比率计算 ed。

9. 发明授权

US6097714A Code multiplexing transmitting apparatus 失效
公开(公告)号：US6097714A
公开(公告)日：2000-08-01
申请号：US872358
申请日：1997-06-10
申请人： Kazuo Nagatani , Yasuyuki Oishi , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
发明人： Kazuo Nagatani , Yasuyuki Oishi , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04L27/20 , H04B1/707 , H04B1/7097 , H04J13/00 , H04J13/12 , H04B7/216 , H04B15/00 , H04Q7/28
CPC分类号： H04J13/00 , H04B1/707 , H04J13/0051 , H04B2201/70701 , H04B2201/70706 , H04J13/12
摘要： A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spectrum modulating unit for each channel includes a phase shifter for shifting, by a predetermined angle channel by channel, the phase of a position vector of the spread-spectrum modulated signal of each channel. As the result of such phase control, the phases of pilot signal portions of the spread-spectrum modulated signals of the respective channels are shifted relative to one another so that the peak values of the code-multiplexed signal can be suppressed.

10. 发明授权

US6041034A Spread spectrum communication system 失效
标题翻译：扩频通信系统
公开(公告)号：US6041034A
公开(公告)日：2000-03-21
申请号：US940479
申请日：1997-09-30
申请人： Hidenobu Fukumasa , Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada
发明人： Hidenobu Fukumasa , Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada
IPC分类号： H04B1/69 , H04B7/26 , H04J11/00 , H04J13/12 , H04W88/00 , H04B7/216 , H04B7/212 , H04B1/38
CPC分类号： H04J13/102 , H04J13/0025
摘要： Co-channel interference may be prevented even if data having different transmission rates are concurrently multiplied to a same frequency band width with a different spreading factors. A method for generating code division multiple access data from data having different rates by a direct spread spectrum includes the steps of combining an orthogonal code and a reversed orthogonal code obtained by inverting the orthogonal code, for each of orthogonal code sequence structured by an m-sequence thereby to generate a first sequence of orthogonal codes, combing two of the orthogonal code for each of orthogonal code sequences structured by the m-sequence thereby to generate a second sequence of orthogonal codes, combining two of the reversed orthogonal code for each of orthogonal code sequences structured by the m-sequence thereby to generate a third sequence of orthogonal codes, and generating another orthogonal code having twice a code length of the orthogonal code from the first, second and third sequence of orthogonal codes; and multiplying the generated orthogonal code and a different m-sequence, together.
摘要翻译：即使具有不同传播速率的数据被同时乘以具有不同扩频因子的相同频带宽度，也可以防止同信道干扰。一种用于通过直接扩展频谱从具有不同速率的数据产生码分多址数据的方法，包括以下步骤：对由正交码构成的正交码序列中的每一个组合正交码和反相正交码，从而产生正交码的第一序列，对由m序列构成的每个正交码序列组合正交码中的两个，从而产生正交码的第二序列，将正交码中的每一个合成两个正交码由m序列构成的码序列，从而产生正交码的第三序列，并且从正交码的第一，第二和第三序列生成具有正交码的码长的两倍的另一个正交码; 并将所生成的正交码与不同的m序列相乘。

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