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1. 发明授权

US06842442B2 DS-CDMA transmission method 有权
标题翻译： DS-CDMA传输方式
公开(公告)号：US06842442B2
公开(公告)日：2005-01-11
申请号：US09218521
申请日：1998-12-22
申请人： Koichi Okawa , Koji Ohno , Mamoru Sawahashi , Shinji Uebayashi , Yukihiko Okumura
发明人： Koichi Okawa , Koji Ohno , Mamoru Sawahashi , Shinji Uebayashi , Yukihiko Okumura
IPC分类号： H04W88/00 , H04B1/707 , H04B7/24 , H04B7/26 , H04J11/00 , H04J13/00 , H04B7/216
CPC分类号： H04J13/00 , H04B7/2637 , H04B2201/70701 , H04J13/0077
摘要： A DS-CDMA transmission method capable of improving the accuracy of channel estimation using pilot symbols by eliminating cross-correlation between pilot symbols inserted into code channels in CDMA multiplexing carrying out fast signal transmission. In each frame assembler, the pilot symbols, which are used for channel estimation for coherent detection, are inserted into coded information data on code channels at fixed intervals, and then the data is modulated by the modulator. The modulated data symbols in each code channel from the modulator are spread by the spreading modulator, the pilot symbols are spread using a spreading code, whereas the information symbols are spread using different spreading codes assigned to respective code channels. The spread signals of the code channels are summed up by the adder to be transmitted.
摘要翻译：一种DS-CDMA传输方法，其能够通过消除在执行快速信号传输的CDMA复用中插入到码信道中的导频符号之间的互相关，来提高使用导频符号的信道估计的精度。在每个帧汇编器中，用于相干检测的信道估计的导频符号以固定的间隔插入到代码信道的编码信息数据中，然后由调制器调制数据。来自调制器的每个码信道中的调制数据符号由扩展调制器扩展，导频符号使用扩展码进行扩展，而信息符号使用分配给各个代码信道的不同扩频码进行扩展。代码通道的扩展信号由加法器求和以发送。

2. 发明授权

US6097711A DS-CDMA transmission method 失效
标题翻译： DS-CDMA传输方式
公开(公告)号：US6097711A
公开(公告)日：2000-08-01
申请号：US865591
申请日：1997-05-29
申请人： Koichi Okawa , Koji Ohno , Mamoru Sawahashi , Shinji Uebayashi , Yukihiko Okumura
发明人： Koichi Okawa , Koji Ohno , Mamoru Sawahashi , Shinji Uebayashi , Yukihiko Okumura
IPC分类号： H04W88/00 , H04B1/707 , H04B7/24 , H04B7/26 , H04J11/00 , H04J13/00 , H04B7/216 , H04B3/10 , H04J1/16
CPC分类号： H04J13/00 , H04B7/2637 , H04B2201/70701 , H04J13/0077
摘要： A DS-CDMA transmission method capable of improving the accuracy of channel estimation using pilot symbols by eliminating cross-correlation between pilot symbols inserted into code channels in CDMA multiplexing carrying out fast signal transmission. In each frame assembler, the pilot symbols, which are used for channel estimation for coherent detection, are inserted into coded information data on code channels at fixed intervals, and then the data is modulated by the modulator. The modulated data symbols in each code channel from the modulator are spread by the spreading modulator, the pilot symbols are spread using a spreading code, whereas the information symbols are spread using different spreading codes assigned to respective code channels. The spread signals of the code channels are summed up by the adder to be transmitted.
摘要翻译：一种DS-CDMA传输方法，其能够通过消除在执行快速信号传输的CDMA复用中插入到码信道中的导频符号之间的互相关，来提高使用导频符号的信道估计的精度。在每个帧汇编器中，用于相干检测的信道估计的导频符号以固定的间隔插入到代码信道的编码信息数据中，然后由调制器调制数据。来自调制器的每个码信道中的调制数据符号由扩展调制器扩展，导频符号使用扩展码进行扩展，而信息符号使用分配给各个代码信道的不同扩频码进行扩展。代码通道的扩展信号由加法器求和以发送。

3. 发明授权

US5692015A Coherent detector and a coherent detection method for a digital communication receiver 失效
标题翻译：相干检测器和数字通信接收机的相干检测方法
公开(公告)号：US5692015A
公开(公告)日：1997-11-25
申请号：US553464
申请日：1995-11-28
申请人： Akihiro Higashi , Fumiyuki Adachi , Koji Ohno , Mamoru Sawahashi
发明人： Akihiro Higashi , Fumiyuki Adachi , Koji Ohno , Mamoru Sawahashi
IPC分类号： H04L7/08 , H04L25/02 , H03D1/00 , H04L27/06
CPC分类号： H04L25/0236 , H04L25/0212 , H04L25/0232 , H04L7/08
摘要： A coherent detection method including a step of estimating a transfer function of a propagation path using pseudo-pilot signals which consist of some information symbols adjacent to pilot signals. The information symbols in the pseudo-pilot signals are assumed to be known. The method includes the steps of estimating the transfer functions using the pilot signals, carrying out interpolation coherent detection of the information symbols using the estimated transfer functions, storing the detection results as the pseudo-pilot signals, reestimating the transfer functions associated with the information symbols corresponding to the pseudo-pilot signals by using the pseudo-pilot signals and the corresponding received signal under the assumption that the pseudo-pilot signals have a known correct pattern, and carrying out the interpolation coherent detection of the individual information symbols by using the transfer functions obtained by the reestimation. This makes it possible to estimate the transfer function at high accuracy with a small number of symbols per pilot signal, thereby improving the detection characteristics.
摘要翻译： PCT No.PCT / JP95 / 01229 Sec。 371日期：1995年11月28日 102（e）1995年11月28日日期PCT 1995年6月21日PCT PCT。公开号WO95 / 35615 日期1995年12月28日一种相干检测方法，包括使用由与导频信号相邻的一些信息符号组成的伪导频信号来估计传播路径的传递函数的步骤。伪导频信号中的信息符号被认为是已知的。该方法包括以下步骤：使用导频信号估计传递函数，使用估计的传递函数执行信息符号的内插相关检测，将检测结果存储为伪导频信号，重新估计与信息符号相关联的传递函数在伪导频信号具有已知正确模式的假设下，通过使用伪导频信号和相应的接收信号对应于伪导频信号，并且通过使用传输来执行个体信息符号的内插相关检测通过重新获得的功能。这使得可以以每个导频信号的少量符号高精度地估计传递函数，从而提高检测特性。

4. 发明授权

US5623486A Transmission power control method and apparatus for mobile communications using a CDMA (code division multiple access) system 失效
标题翻译：使用CDMA（码分多址）系统的移动通信的发送功率控制方法和装置
公开(公告)号：US5623486A
公开(公告)日：1997-04-22
申请号：US442955
申请日：1995-05-17
申请人： Tomohiro Dohi , Mamoru Sawahashi , Koji Ohno
发明人： Tomohiro Dohi , Mamoru Sawahashi , Koji Ohno
IPC分类号： H04W52/04 , H04B7/005 , H04B7/26 , H04J13/00 , H04L1/00 , H04W52/00 , H04W52/02 , H04W52/08
CPC分类号： H04L1/0054 , H04L1/0072 , H04W52/0245 , H04W52/08
摘要： A transmission power control method is disclosed for controlling transmission power of radio communications in a CDMA system. The transmission power of a first transmitted signal transmitted from a first station is determined by a transmission power control signal contained in a second transmitted signal sent from a second station. The first station receives the second transmitted signal in the form of convolutional codes, and decodes it by using a first Viterbi decoder and a second Viterbi decoder. The first and second Viterbi decoders includes path memories with the path history length of different first predetermined lengths. The transmission power control signal contained in the second transmitted signal is extracted from the output of the second Viterbi decoder, whereas the other information data is obtained from the output of the first Viterbi decoder. The first station controls the transmission power of the first transmitted signal on the basis of the extracted transmission power control signal.
摘要翻译：公开了用于控制CDMA系统中的无线电通信的发送功率的发送功率控制方法。从第一站发送的第一发送信号的发送功率由包含在从第二站发送的第二发送信号中的发送功率控制信号确定。第一站以卷积码的形式接收第二发送信号，并通过使用第一维特比解码器和第二维特比解码器进行解码。第一和第二维特比解码器包括具有不同的第一预定长度的路径历史长度的路径存储器。从第二维特比解码器的输出中提取包含在第二发送信号中的发送功率控制信号，而从第一维特比解码器的输出获得其他信息数据。第一站基于所提取的发送功率控制信号来控制第一发送信号的发送功率。

5. 发明授权

US5652765A Receiver and repeater for spread spectrum communications 失效
标题翻译：接收机和中继器用于扩频通信
公开(公告)号：US5652765A
公开(公告)日：1997-07-29
申请号：US411645
申请日：1995-05-22
申请人： Fumiyuki Adachi , Mamoru Sawahashi , Akihiro Higashi , Koji Ohno , Tomohiro Dohi
发明人： Fumiyuki Adachi , Mamoru Sawahashi , Akihiro Higashi , Koji Ohno , Tomohiro Dohi
IPC分类号： H04B1/707 , H04B7/06 , H04B7/08 , H04B3/36 , H04B7/17 , H04B17/02 , H04L25/20
CPC分类号： H04B7/0894 , H04B1/712 , H04B7/0671
摘要： A repeater improving the effect of a RAKE reception. A received signal from a base station parallelly passes a first path including a first delay circuit and a second path including no delay circuit, and is transmitted to a mobile station. A received signal from the mobile station parallelly passes a third path including a second delay circuit and a fourth path including no delay circuit, and is transmitted to the base station. The delay time of the delay circuits are set at one chip interval or more of a spreading code. This forcedly produces multipath waves which are resolvable by a RAKE receiver. The RAKE receiver estimates amplitudes of desired wave components for individual delayed waves, performs weighting of the respective delayed wave components from detectors by using the estimated amplitudes, and makes symbol decision in terms of the combined weighted signal.
摘要翻译： PCT No.PCT / JP94 / 01283第 371日期：1995年5月22日 102（e）日期1995年5月22日PCT 1994年8月4日PCT PCT。第WO95 / 05037号公报日期1995年2月16日中继器改善RAKE接收的效果。来自基站的接收信号并行地通过包括第一延迟电路和不包括延迟电路的第二路径的第一路径，并被发送到移动站。来自移动站的接收信号并行地通过包括第二延迟电路的第三路径和不包括延迟电路的第四路径，并且被发送到基站。延迟电路的延迟时间设定为扩展码的一个码片间隔或更多个码片间隔。这强制产生可由RAKE接收机解析的多径波。 RAKE接收机估计各个延迟波的期望波分量的振幅，通过使用估计的幅度对来自检测器的各个延迟波分量进行加权，并根据组合的加权信号进行符号判定。

6. 发明授权

US5566165A Transmission power control method and a communication system using the same 失效
标题翻译：传输功率控制方法及使用该方法的通信系统
公开(公告)号：US5566165A
公开(公告)日：1996-10-15
申请号：US439302
申请日：1995-05-11
申请人： Mamoru Sawahashi , Narumi Umeda , Tomohiro Dohi , Koji Ohno
发明人： Mamoru Sawahashi , Narumi Umeda , Tomohiro Dohi , Koji Ohno
IPC分类号： H04W16/24 , H04B7/005 , H04B7/26 , H04J13/00 , H04W52/04 , H04W52/14 , H04W52/24 , H04W52/34
CPC分类号： H04W52/146 , H04W52/241 , H04W52/248 , H04W52/343 , Y02B60/50
摘要： A transmission power control method for a CDMA system including the steps of calculating an actual SIR (Signal-to-Interference Ratio) of a desired signal; deciding whether the actual SIR is greater than a predetermined reference SIR which satisfies a predetermined conununication quality; forming a transmission power control bit on the basis of a result of deciding; inserting the transmission power control bit periodically into a forward frame, which steps are performed at the base station, and steps of calculating tentative reverse transmission power in accordance with the transmission power control bit in the forward frame; deciding reverse transmission power such that the reverse transmission power is made equal to the tentative reverse transmission power when the tentative reverse transmission power is less than a predetermined maximum transmission power, but otherwise made equal to the predetermined maximum transmission power; and transmitting a signal from the mobile station to the base station at the reverse transmission power, which steps are performed at the mobile station. This makes it possible to prevent the transmission power from diverging to the maximum output of a transmitter power amplifier.
摘要翻译：一种用于CDMA系统的发射功率控制方法，包括以下步骤：计算期望信号的实际SIR（信号与干扰比）; 确定实际SIR是否大于满足预定协调质量的预定参考SIR; 基于决定结果形成发送功率控制位; 将发送功率控制位周期性地插入前向帧，在基站执行哪些步骤，以及根据前向帧中的发送功率控制比特来计算暂定反向发送功率的步骤; 确定反向传输功率，使得当临时反向传输功率小于预定的最大传输功率时，反向传输功率等于暂定反向传输功率，但是否则等于预定的最大传输功率; 并且以所述反向发射功率从所述移动台向所述基站发送信号，所述步骤在所述移动台执行。这使得可以防止发射功率发散到发射机功率放大器的最大输出。

7. 发明授权

US6167037A Signal transmitting method, transmitter, receiver, and spread-spectrum code synchronizing method for mobile communication system 失效
标题翻译：用于移动通信系统的信号发射方法，发射机，接收机和扩频码同步方法
公开(公告)号：US6167037A
公开(公告)日：2000-12-26
申请号：US952081
申请日：1997-11-03
申请人： Kenichi Higuchi , Mamoru Sawahashi , Fumiyuki Adachi , Koji Ohno , Akihiro Higashi
发明人： Kenichi Higuchi , Mamoru Sawahashi , Fumiyuki Adachi , Koji Ohno , Akihiro Higashi
IPC分类号： H04B1/707 , H04B1/7075 , H04B7/26 , H04W48/16 , H04W56/00 , H04B7/216
CPC分类号： H04B1/70756 , H04B1/70755 , H04B1/708 , H04B1/7083 , H04B2201/70702 , H04J13/16 , H04J2013/0037
摘要： Achieving high speed spreading code synchronization of a forward link control channel. A control channel information signal and traffic channel information signals are each spread by different first spreading codes which are fed from a first spreading code (short code) generator (11), and which have a period equal to the period of an information symbol. Subsequently, only the control channel information signal is spread by a third spreading code which is fed from a third spreading code (long code masked portion complex conjugate code) generator (12), and which has a form of complex conjugate of a long code (second spreading code) used for spreading in common. The signals of the entire channels are summed up by an adder (13) at appropriate timings, and the resultant sum is spread by the second spreading code fed from a second spreading code generator (14), thereby being output as a spread modulation signal.
摘要翻译： PCT No.PCT / JP97 / 00657 Sec。 371日期：1997年11月3日 102（e）日期1997年11月3日PCT 1997年3月4日PCT公布。公开号WO97 / 33400 PCT 日期1997年9月12日正向链路控制通道的高速扩频码同步。控制信道信息信号和业务信道信息信号各自由从第一扩展码（短码）发生器（11）馈送的不同的第一扩展码进行扩展，并且其周期等于信息符号的周期。随后，只有控制信道信息信号被从第三扩展码（长码屏蔽部分复共轭码）发生器（12）馈送的第三扩展码扩展，并且具有长码（第二扩展码）用于共同传播。整个信道的信号在适当的定时由加法器（13）求和，并且所得到的和由第二扩展码发生器（14）馈送的第二扩展码扩展，从而作为扩展调制信号被输出。

8. 发明授权

US5896374A Variable rate transmission method, transmitter and receiver using the same 失效
标题翻译：变速率传输方式，发射机和接收机使用相同
公开(公告)号：US5896374A
公开(公告)日：1999-04-20
申请号：US732413
申请日：1996-10-22
申请人： Yukihiko Okumura , Fumiyuki Adachi , Koji Ohno , Akihiro Higashi
发明人： Yukihiko Okumura , Fumiyuki Adachi , Koji Ohno , Akihiro Higashi
IPC分类号： H04B1/707 , H04B7/26 , H04J3/14 , H04J3/16 , H04J13/00 , H04L1/00 , H04L1/08 , H04L7/04 , H04B7/216 , H04J13/02
CPC分类号： H04L1/0046 , H04B1/707 , H04B7/2628 , H04J3/14 , H04J3/1682 , H04L1/0002 , H04L1/0007 , H04L1/0013 , H04L1/0038 , H04L1/0039 , H04L1/0061 , H04L1/0063 , H04L1/0071 , H04L1/0079 , H04L1/0086 , H04L1/08 , H04L7/048 , H04B2201/70703 , H04B2201/70705 , H04L1/0009 , H04L1/0025 , H04L1/0032 , H04L1/0059 , H04L2001/0098 , Y02B60/31
摘要： A variable rate transmission method that can vary the transmission rate of data. A transmitting side supplies a transmitted data sequence to an error detecting encoder 105 and a frame memory 103. The frame memory 103 stores data of a variable length to be transmitted in one frame. The error detecting encoder 105 calculates an error detecting code (such as CRC code) for each frame of the transmitted data. A multiplexer 104 adds the calculated error detecting code ahead of the transmitted data to place it at the initial position of the frame, and sequentially outputs the data sequence frame by frame. A receiving side calculates an error detecting code of the data in each transmitted frame in the same manner as the transmitting side, and compares the calculated error detecting code with the error detecting code at the initial position of the frame. The end bit of the frame data is decided as a position at which the two error detecting codes coincide. This makes it possible to transmit variable length data without informing the receiving side of the data length in each frame. This is equivalent that the transmission rate can be varied freely.
摘要翻译： PCT No.PCT / JP96 / 00419 Sec。 371日期1996年10月22日第 102（e）日期1996年10月22日PCT提交1996年2月23日PCT公布。公开号WO96 / 26582 日期1996年8月29日可变速率传输方法可以改变数据传输速率。发送侧将发送的数据序列提供给错误检测编码器105和帧存储器103.帧存储器103将要发送的可变长度的数据存储在一帧中。错误检测编码器105针对发送数据的每一帧计算错误检测码（例如CRC码）。复用器104将所发送的数据之前的计算出的错误检测码相加，将其置于帧的初始位置，并逐帧地依次输出数据序列。接收侧以与发送侧相同的方式计算每个发送帧中的数据的错误检测码，并将计算出的错误检测码与帧的初始位置处的错误检测码进行比较。帧数据的结束位被确定为两个错误检测码一致的位置。这使得可以在不向每个帧中的接收方通知数据长度的情况下发送可变长度数据。这相当于传输速率可以自由变化。

9. 发明授权

US07522166B2 Video game processing method, video game processing apparatus and computer readable recording medium storing video game program 有权
标题翻译：视频游戏处理方法，视频游戏处理装置和存储视频游戏程序的计算机可读记录介质
公开(公告)号：US07522166B2
公开(公告)日：2009-04-21
申请号：US10306158
申请日：2002-11-29
申请人： Koji Ohno
发明人： Koji Ohno
IPC分类号： G06T15/40 , G06T15/00
CPC分类号： A63F13/52 , A63F13/10 , G06T13/40
摘要： A simple model for an object to be processed is obtained, and Z-values and display coordinates of vertexes of the simple model from a predetermined viewpoint are calculated. A rectangular Z-area associated with the calculated display coordinates is detected, and an area of a predetermined size is generated based upon the detected Z-area while keeping a feature of the detected Z-area. A minimum value Z1MIN of the simple model is extracted. The minimum value Z1MIN of the simple model is compared with all of the Z-values within the generated area, which are stored in a Z-buffer at that time. If it is determined that the minimum value Z1MIN of the simple model is larger than the maximum value Z2MAX within the generated area, subsequent steps are skipped. Thus, processing of a real model can be avoided, which reduces the processing.
摘要翻译：获得待处理对象的简单模型，并计算出从预定视点的简单模型的顶点的Z值和显示坐标。检测与所计算的显示坐标相关联的矩形Z区域，并且基于检测到的Z区域生成预定大小的区域，同时保持检测到的Z区域的特征。提取简单模型的最小值Z1MIN。将简单模型的最小值Z1MIN与存储在该时间的Z缓冲器中的生成区域内的所有Z值进行比较。如果确定简单模型的最小值Z1MIN大于生成区域内的最大值Z2MAX，则跳过后续步骤。因此，可以避免真实模型的处理，这减少了处理。

10. 发明授权

US07095780B2 Base station apparatus of mobile communication system 有权
标题翻译：移动通信系统基站装置
公开(公告)号：US07095780B2
公开(公告)日：2006-08-22
申请号：US10673685
申请日：2003-09-29
申请人： Takehiro Nakamura , Junichiro Hagiwara , Etsuhiro Nakano , Koji Ohno , Seizo Onoe , Akihiro Higashi , Motoshi Tamura , Masatomo Nakano , Hiroshi Kawakami , Hiroki Morikawa
发明人： Takehiro Nakamura , Junichiro Hagiwara , Etsuhiro Nakano , Koji Ohno , Seizo Onoe , Akihiro Higashi , Motoshi Tamura , Masatomo Nakano , Hiroshi Kawakami , Hiroki Morikawa
IPC分类号： H04B1/707 , H04Q7/20
CPC分类号： H04W88/08 , H04B7/2618 , H04B7/2628 , H04B2201/70701 , H04B2201/70703 , H04J13/00 , H04J13/0022 , H04J13/0029 , H04J13/0077 , H04J13/10 , H04J13/16 , H04W52/08 , H04W52/12 , H04W52/16 , H04W52/24 , H04W52/241 , H04W52/248 , H04W52/322 , H04W52/325 , H04W52/40 , H04W52/50 , H04W52/56 , H04W52/60 , H04W92/10 , H04W92/12
摘要： A base station including a transmitting and receiving amplifier for amplifying CDMA signals exchanged with a mobile station; a radio stage connected to the transmitting and receiving amplifier for carrying out D/A conversion of a transmitted signal that undergoes baseband spreading, followed by quadrature modulation, and for carrying out quasi-coherent detection of a received signal, followed by A/D conversion; a baseband signal processor connected with the radio stage for carrying out baseband signal processing of the transmitted signal and the received signal; a transmission interface connected with the baseband signal processor for implementing interface with external channels; and a base station controller for carrying out control such as management of radio channels and establishment and release of the radio channels. The base station communicates with the external channels by mapping logical channels into physical channels. The CDMA signals are spread using a short code and a long code.
摘要翻译：一种基站，包括用于放大与移动台交换的CDMA信号的发射和接收放大器; 连接到发射和接收放大器的无线电台，用于对经历基带扩频的发送信号进行D / A转换，随后进行正交调制，并进行接收信号的准相干检测，然后进行A / D转换 ; 与无线电台连接的基带信号处理器，用于对发射信号和接收信号进行基带信号处理; 与基带信号处理器连接的传输接口，用于实现与外部信道的接口; 以及用于执行无线电信道的管理和无线电信道的建立和释放的控制的基站控制器。基站通过将逻辑信道映射到物理信道中与外部信道进行通信。 CDMA信号使用短码和长码进行传播。

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