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31. 发明授权

US07012969B2 Distortion compensating apparatus 失效
标题翻译：失真补偿装置
公开(公告)号：US07012969B2
公开(公告)日：2006-03-14
申请号：US09737196
申请日：2000-12-14
申请人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
发明人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
IPC分类号： H04L25/03
CPC分类号： H03F1/3247 , H03F2201/3233
摘要： Disclosed is a distortion compensating apparatus for correcting the size of a distortion compensation coefficient in such a manner that a transmit signal that has undergone distortion compensation will not exceed the dynamic range of a DA converter. Specifically, before a distortion compensation coefficient hn+1(p) that has been calculated by a calculation unit is stored in a coefficient memory, an assumption is made that distortion compensation will be performed using the distortion compensation coefficient hn+1(p). Then it is determined beforehand whether a signal x(t)*hn+1(p) that will be obtained by this distortion compensation will exceed the limit of a DA converter. If the limit will be exceeded, the size of the distortion compensation coefficient is reduced by a correction unit, the corrected distortion compensation coefficient is stored in the memory and the transmit signal is corrected using the stored distortion compensation coefficient.
摘要翻译：公开了一种失真补偿装置，用于以经过失真补偿的发送信号不会超过DA转换器的动态范围的方式校正失真补偿系数的大小。具体地说，在由计算单元计算出的失真补偿系数h N + 1（p）被存储在系数存储器中之前，假定将使用失真补偿执行失真补偿系数h n + 1（p）。然后，预先确定将通过该失真补偿获得的信号x（t）* h N + 1（p）将超过DA转换器的极限。如果超过极限，则通过校正单元来减小失真补偿系数的大小，将校正的失真补偿系数存储在存储器中，并使用所存储的失真补偿系数校正发送信号。

32. 发明授权

US06836517B2 Distortion compensating apparatus 有权
标题翻译：失真补偿装置
公开(公告)号：US06836517B2
公开(公告)日：2004-12-28
申请号：US09745948
申请日：2000-12-22
申请人： Kazuo Nagatani , Tokuro Kubo , Takayoshi Ode , Yasuyuki Oishi
发明人： Kazuo Nagatani , Tokuro Kubo , Takayoshi Ode , Yasuyuki Oishi
IPC分类号： H04K102
CPC分类号： H04L27/368 , H03F1/3247 , H03F1/3288
摘要： A distortion compensating apparatus for compensating for a distortion of a transmission power amplifier. A delay time decision unit calculates the correlation between a transmission signal and a feedback signal fed back from the output side of the transmission power amplifier while varying phase difference between both signals, and decides the total delay time caused in the transmission power amplifier and a feedback loop on the basis of the phase difference in which the correlation is the maximum. A delay unit delays the transmission signal before a distortion compensation processing by the total delay time, and inputs the delayed signal into a distortion compensating apparatus arithmetic unit, which calculates and stores a distortion compensation coefficient on the basis of the transmission signal and the feedback signal fed back from the output side of the transmission power amplifier. A pre-distortion unit applies a distortion compensation processing to the transmission signal by using the distortion compensation coefficient.
摘要翻译：一种用于补偿发射功率放大器的失真的失真补偿装置。延迟时间决定单元计算发送信号与从发送功率放大器的输出侧反馈的反馈信号之间的相关性，同时改变两个信号之间的相位差，并且确定在发送功率放大器中引起的总延迟时间和反馈基于相关性最大的相位差进行循环。延迟单元将失真补偿处理之前的发送信号延迟总延迟时间，并将延迟信号输入失真补偿装置运算单元，该运算单元基于发送信号和反馈信号计算并存储失真补偿系数从发射功率放大器的输出侧反馈。预失真单元通过使用失真补偿系数对发送信号应用失真补偿处理。

33. 发明授权

US06650689B1 Correlator and delay lock loop circuit 失效
标题翻译：相关器和延迟锁环电路
公开(公告)号：US06650689B1
公开(公告)日：2003-11-18
申请号：US09318446
申请日：1999-05-25
申请人： Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada , Yoshihiko Asano
发明人： Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04B1500
CPC分类号： H04B1/7075 , H04B1/7085 , H04B1/709 , H04B1/7095 , H04B2201/70707
摘要： The present invention reduces the scale of circuitry and shortens the code phase detection time needed to achieve initial synchronization. In a correlator for calculating correlation between a received spreading code contained in a received spread-spectrum signal and a reference spreading code, a combined code generator is included. The combined code generator outputs a combined spreading code by weighting and combining a plurality of phase-shifted reference spreading codes A1-AM. Further, an arithmetic circuit calculates correlation between the received spreading code and the plurality of phase-shifted reference spreading codes simultaneously. A phase detection circuit detects the phase difference between the received spreading code and a reference spreading code, namely the phase of the received spreading code from the results of the arithmetic operation.
摘要翻译：本发明减小了电路规模，缩短了实现初始同步所需的码相位检测时间。在用于计算包含在接收扩展频谱信号中的接收扩展码与参考扩展码之间的相关性的相关器中，包括组合码发生器。组合码发生器通过加权和组合多个相移参考扩展码A1-AM来输出组合扩展码。此外，算术电路同时计算接收的扩展码与多个相移参考扩展码之间的相关性。相位检测电路从算术运算结果检测接收到的扩展码与参考扩展码之间的相位差，即接收到的扩展码的相位。

34. 发明授权

US06552609B2 Signal distortion compensating apparatus and method 失效
公开(公告)号：US06552609B2
公开(公告)日：2003-04-22
申请号：US09784601
申请日：2001-02-15
申请人： Hajime Hamada , Yasuyuki Oishi , Takuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hiroyoshi Ishikawa
发明人： Hajime Hamada , Yasuyuki Oishi , Takuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hiroyoshi Ishikawa
IPC分类号： H03F126
CPC分类号： H03F1/3294 , H03F1/3247 , H03F1/3282
摘要： Digital input signals xi and xq are multiplied by an multiplier 31 with a distortion compensation coefficient of a distortion compensation coefficient storage unit 33 and then processed by a modulation/amplification unit 1 for sending in the form of analog output signals Z. The analog output signals Z are fed back for processings by an attenuator 43, a mixer 41, a quadrature demodulator 39, etc., and then fed to subtractors 35i and 35q. The subtractors 35i and 35q find differences (errors) between analog input signals Xi and Xq and analog feedback signals Yi and Yq, respectively, and feeds the analog error signals to ADCs 36i and 36q, respectively. The ADCs 36i and 36q convert the analog error signals into digital signals and feeds the digital signals to a distortion compensation coefficient arithmetic unit 5. The distortion compensation coefficient arithmetic unit 5 figures out a new distortion compensation coefficient to update the distortion compensation coefficient storage unit 33.

35. 发明授权

US06496474B1 Spread encoding device and method 失效
标题翻译：扩展编码装置和方法
公开(公告)号：US06496474B1
公开(公告)日：2002-12-17
申请号：US09159377
申请日：1998-09-23
申请人： Kazuo Nagatani , Yasuyuki Oishi , Hajime Hamada
发明人： Kazuo Nagatani , Yasuyuki Oishi , Hajime Hamada
IPC分类号： H04J1302
CPC分类号： H04L1/0059 , H04J3/0602 , H04J13/0022 , H04J13/102 , H04L1/0042
摘要： An m-bit shift register stores data to be sent that are generated by a data generator 1 bit at a time sequentially. An orthogonal M sequence generator generates an M sequence with the m bits of data to be sent that are stored in the shift register as an initial value, then generates an orthogonal M sequence from that M sequence. A clock signal generator generates a clock signal of frequency 2m times the data rate of the data to be sent. The orthogonal M sequence generator operates in accordance with that clock signal.
摘要翻译：一个m位移位寄存器一次存储由数据发生器1位产生的要发送的数据。正交M序列发生器产生具有存储在移位寄存器中的要发送的数据的m位的M序列作为初始值，然后从该M序列生成正交M序列。时钟信号发生器产生频率为要发送的数据的数据速率2m倍的时钟信号。正交M序列发生器根据该时钟信号进行工作。

36. 发明授权

US6108548A Mobile station and soft handoff method 失效
标题翻译：移动台和软切换方式
公开(公告)号：US6108548A
公开(公告)日：2000-08-22
申请号：US924051
申请日：1997-08-28
申请人： Hideto Furukawa , Yasuyuki Oishi , Kazuo Nagatani , Yoshiharu Tajima , Hidenobu Fukumasa
发明人： Hideto Furukawa , Yasuyuki Oishi , Kazuo Nagatani , Yoshiharu Tajima , Hidenobu Fukumasa
IPC分类号： H04B7/02 , H04W36/18 , H04Q7/32
CPC分类号： H04B7/022 , H04W36/18
摘要： A mobile station is provided which does not cause a reduction in the speech transmission capacity. Branches receive radio signals from base stations and operate independently of one another. A branch operation control section controls the operation of the individual branches to detect a destination-side base station based on the reception levels of signals from surrounding base stations, to cause part of the branches to establish synchronization of spreading code and carrier frequency with respect to the destination-side base station while causing the other part of the branches to maintain communication with a departure-side base station after the destination-side base station is detected, and to cut off the communication with the departure-side base station after the synchronization is established.
摘要翻译：提供了不会导致语音传输能力降低的移动台。分支机构接收来自基站的无线电信号，并且彼此独立地操作。分支操作控制部分基于来自周围基站的信号的接收电平来控制各个分支的操作以检测目的地侧基站，以使部分分支建立扩展码和载波频率的相对于目的地侧基站，同时在检测到目的地侧基站之后使分支的其他部分保持与出发侧基站的通信，并且在同步之后切断与出发侧基站的通信成立

37. 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.

38. 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。

39. 发明授权

US6018545A Communications device employing spectrum spreading in transmitted bits along a time axis 失效
标题翻译：通信设备沿着时间轴在传输比特中采用频谱扩展
公开(公告)号：US6018545A
公开(公告)日：2000-01-25
申请号：US820552
申请日：1997-03-19
申请人： Hidenobu Fukumasa , Yasuyuki Oishi , Hideto Furukawa , Kazuo Nagatani , Yoshiharu Tajima
发明人： Hidenobu Fukumasa , Yasuyuki Oishi , Hideto Furukawa , Kazuo Nagatani , Yoshiharu Tajima
IPC分类号： H04B1/707 , H04B1/7073 , H04K1/00
CPC分类号： H04B1/707
摘要： A plurality of chips generated by spectrum spreading from each of the bits constituting transmission information are distributed along the time axis, and transmitted. At the receiving end, the transmission information is recovered while integrating information of the chips distributed along the time axis. In a first aspect of the present invention, the transmission information is repeated multiple times, and then the resulting information is spread by a spreading code to generate the transmission data. In a second aspect of the present invention, the transmission information is first spread by a spreading code and then interleaved to generate the transmission data.
摘要翻译：多个由光谱从构成发送信息的比特的扩展产生的切屑沿时间轴分散，并且发送。在接收端，同时整合沿时间轴分布芯片的信息的发送信息被回收。在本发明的第一个方面中，传输信息被重复多次，然后将所得的信息由扩展码扩展，以生成发送数据。在本发明的第二方面中，传输信息首先用扩展码扩展，然后被交织以产生传输数据。

40. 发明授权

US07519097B2 Spread-signal multiplexing circuit 失效
标题翻译：扩频信号复用电路
公开(公告)号：US07519097B2
公开(公告)日：2009-04-14
申请号：US10279394
申请日：2002-10-24
申请人： Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani
发明人： Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani
IPC分类号： H04B7/216
CPC分类号： H04L5/06
摘要： The invention relates to a spread-signal multiplexing circuit for frequency-multiplexing a plurality of spread signals that were generated in parallel according to the SSMA scheme. An object of the invention is to adapt to various degrees of multiplicity and to keep the SN ratio and the power efficiency high. To this end, a spread-signal multiplexing circuit of the invention comprises an amplitude monitoring part for multiplexing a plurality of spread signals and determining amplitude of a resulting signal in time-series order; a delaying part for delaying the spread signals in parallel by a time that is equal to a propagation delay time of the amplitude monitoring part; and a multiplexing part for generating a multiplexed signal by multiplexing the delayed spread signals while weighting the delayed spread signals in parallel using weights that are smaller as an average value of the determined amplitude is larger.
摘要翻译：本发明涉及一种用于对根据SSMA方案并行生成的多个扩展信号进行频率复用的扩展信号复用电路。本发明的一个目的是适应不同程度的多重性，并保持SN比和功率效率。为此，本发明的扩展信号复用电路包括用于多路复用多个扩展信号并且以时间顺序确定所得信号的幅度的幅度监视部分; 延迟部分，用于将扩展信号并行延迟等于振幅监测部分的传播延迟时间的时间; 以及复用部分，用于通过多路复用延迟的扩展信号来产生多路复用信号，同时使用作为所确定的幅度的平均值较小的权重来并行加权延迟的扩展信号。

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