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1. 发明授权

US5920591A Spreading code generator and CDMA communication system 失效
标题翻译：扩展码发生器和CDMA通信系统
公开(公告)号：US5920591A
公开(公告)日：1999-07-06
申请号：US679925
申请日：1996-07-15
申请人： Atsushi Fukasawa , Toshio Kato , Manabu Kawabe , Shinichi Sato , Kiyoki Sekine
发明人： Atsushi Fukasawa , Toshio Kato , Manabu Kawabe , Shinichi Sato , Kiyoki Sekine
IPC分类号： H04J13/00 , H04B7/26 , H04J11/00 , H04J13/10 , H04W56/00 , H04W72/04 , H04B15/00 , H04K1/00 , H04L27/30
CPC分类号： H04J13/0022 , H04B1/707 , H04J13/10
摘要： A spreading code generator generates a spreading code by modulo-two addition of two internal spreading codes. The first internal spreading code is part of a pseudorandom noise sequence, created by resetting a pseudorandom noise generator to an assigned initial state at intervals determined by counting a framing signal. The second spreading code is selected from a set of preferably orthogonal sequences, the selected sequence being repeated at intervals shorter than the period of the framing signal. A code-division multiple-access communication system employs this spreading code generator to generate all spreading codes used at all communicating stations. One of the spreading codes generated at each station is transmitted as a synchronization signal.
摘要翻译：扩展码发生器通过两个内部扩展码的模二加法生成扩展码。第一内部扩展码是伪随机噪声序列的一部分，其通过将伪随机噪声发生器重新设置为以通过对成帧信号计数确定的间隔来分配初始状态而产生。从一组优选正交序列中选择第二扩展码，所选序列以比成帧信号的周期短的间隔重复。码分多址通信系统采用该扩展码发生器来生成在所有通信站使用的所有扩展码。在每个站处产生的扩展码之一作为同步信号发送。

2. 发明授权

US5694429A Mobile radio communication system 失效
标题翻译：移动无线电通信系统
公开(公告)号：US5694429A
公开(公告)日：1997-12-02
申请号：US426253
申请日：1995-04-21
申请人： Kiyoki Sekine , Toshio Kato , Manabu Kawabe , Takuro Sato
发明人： Kiyoki Sekine , Toshio Kato , Manabu Kawabe , Takuro Sato
IPC分类号： H04B7/26 , G10L11/06 , G10L19/00 , H03M13/23 , H04J3/16 , H04L1/00 , H03M13/12 , H04J13/00
CPC分类号： H04L1/0042 , G10L19/012 , G10L25/93 , H03M13/23 , H04J3/1688 , H04L1/0054 , H04L1/0059 , Y02B60/50
摘要： In a mobile radio communication system, at a transmitter side, when a sound-absent section is detected in sound data, transmission of the sound data is stopped, and instead, tail bits are transmitted. A transmission power is lowered to 0 (zero) or a given value other than 0 when the transmission of the tail bits is finished. The lowering of the transmission power is held until a sound-present section is detected. Convolutional encoding is effected to the sound data and the tail bits prior to transmission. At a receiver side, the variation in transmission power is monitored to control an operation of an associated component in response to the monitored power variation. Viterbi decoding is effected for decoding the convolutional code.
摘要翻译：在移动无线电通信系统中，在发射机侧，当在声音数据中检测到声音缺失部分时，停止发送声音数据，而是发送尾部比特。当尾部位的传输结束时，传输功率降低到0（零）或除0之外的给定值。保持发送功率的降低，直到检测到声音发生部分。在传输之前对声音数据和尾部位进行卷积编码。在接收机侧，监测发射功率的变化以响应于所监测的功率变化来控制相关组件的操作。实现维特比解码以对卷积码进行解码。

3. 发明授权

US5850394A CDMA communications system using multiplexed signaling data lines 失效
标题翻译： CDMA通信系统使用多路复用信令数据线
公开(公告)号：US5850394A
公开(公告)日：1998-12-15
申请号：US880245
申请日：1997-06-23
申请人： Kiyoki Sekine , Toshio Kato , Manabu Kawabe , Takuro Sato
发明人： Kiyoki Sekine , Toshio Kato , Manabu Kawabe , Takuro Sato
IPC分类号： H04J11/00 , H04J13/00
CPC分类号： H04J13/0048
摘要： A transmission device is disclosed in which user data are cross converted, at their base band, by the orthogonal transformers 31.about.34. Signaling data are collected at every integer which does not exceed the ratio of the user data to the signaling data and time division-like multiplexed by the multiplexer 20. The multiplexed data are crossly converted, at its base band, by the orthogonal transformer 35. The base band data cross converted by the orthogonal transformers 31.about.35 are added by the adder 40 and carrier modulated so as to be radio transmitted from the antenna 60.
摘要翻译：公开了一种传输设备，其中用户数据在其基带处由正交变换器31差分34进行交叉转换。每个整数收集信令数据，其不超过用户数据与信令数据和时分的比率由多路复用器20多路复用。多路复用数据在其基带处被正交变压器35交叉转换。由正交变换器31差分35交叉转换的基带数据由加法器40相加，载波调制为以从天线60发送无线电。

4. 发明授权

US5631922A Spread code generation device for spread spectrum communication 失效
标题翻译：用于扩频通信的扩频码生成装置
公开(公告)号：US5631922A
公开(公告)日：1997-05-20
申请号：US426254
申请日：1995-04-21
申请人： Kiyoki Sekine , Toshio Kato , Manabu Kawabe , Takuro Sato
发明人： Kiyoki Sekine , Toshio Kato , Manabu Kawabe , Takuro Sato
IPC分类号： H04B1/707 , H04J13/10 , H04B15/00 , H04K1/00 , H04L27/30
CPC分类号： H04J13/16
摘要： There is disclosed a spread code generation device for spread spectrum communication wherein an input data is modulated so as to be spread by a spread code having a first period. The device includes a long period PN code generator for generating a spread code having a second period longer than the first period, an initial state register for storing an initial phase of the spread code having the first period output from the long period PN code generator and for outputting the initial phase to the long period PN code generator, and a counter for receiving and computing the spread code output from the long period PN code generator and for outputting a trigger signal to the initial state register when the computed spread code reaches the first period. The initial state register outputs the initial phase to the long period PN code generation in response to the trigger signal from the counter. The long period PN code generator is reset to the initial phase when the initial phase is input to the long period PN code generator, whereby the spread code having the first period is output from the counter.
摘要翻译：公开了一种用于扩展频谱通信的扩展码生成装置，其中输入数据被调制以便由具有第一周期的扩展码扩展。该装置包括：长周期PN码发生器，用于产生具有比第一周期长的第二周期的扩展码;初始状态寄存器，用于存储具有从长周期PN码发生器输出的第一周期的扩展码的初始相位;以及用于将初始相位输出到长周期PN码发生器，以及计数器，用于接收和计算从长周期PN码发生器输出的扩展码，并且当计算出的扩展码到达第一个时，输出触发信号到初始状态寄存器期。初始状态寄存器响应于来自计数器的触发信号将初始相位输出到长周期PN码产生。当初始相位输入到长周期PN码发生器时，长周期PN码发生器被复位到初始相位，从而从计数器输出具有第一周期的扩展码。

5. 发明授权

US5394434A Code-division multiple-access demodulator with improved interference cancelation 失效
标题翻译：具有改进的干扰消除的码分多址解调器
公开(公告)号：US5394434A
公开(公告)日：1995-02-28
申请号：US141665
申请日：1993-10-26
申请人： Manabu Kawabe , Takuro Sato , Toshio Kato , Akiyoshi Kawahashi , Atsushi Fukasawa
发明人： Manabu Kawabe , Takuro Sato , Toshio Kato , Akiyoshi Kawahashi , Atsushi Fukasawa
IPC分类号： H04J13/00 , H04B1/7107 , H04K1/00
CPC分类号： H04B1/71075
摘要： A demodulator for code-division multiple-access spread-spectrum communications stores received chip data in a separate memory area for each transmitting station. Each area has a capacity of at least two symbols. When a complete symbol is received from a transmitting station, all chip data stored in the corresponding memory area are correlated with the corresponding spreading code, and estimated symbol values are derived from the correlated values. The correlated or estimated value of the oldest symbol is output as a demodulated value. The difference between each estimated symbol value and the previous estimate for the same symbol is multiplied by the spreading code to generate remaining interference values, which are subtracted from all chip data stored in memory areas for other transmitting stations, thereby updating those data.
摘要翻译：用于码分多址扩频通信的解调器将接收的码片数据存储在每个发射站的单独的存储区域中。每个区域具有至少两个符号的容量。当从发送站接收到完整的符号时，存储在对应的存储区域中的所有芯片数据与对应的扩展码相关，并且从相关值导出估计的符号值。输出最旧符号的相关或估计值作为解调值。将每个估计符号值和相同符号的先前估计之间的差乘以扩展码，以产生剩余干扰值，该剩余干扰值从存储在其他发射站的存储区域中的所有芯片数据中减去，从而更新这些数据。

6. 发明授权

US5715521A Method of controlling synchronization signal power in a communication system 失效
标题翻译：控制通信系统中同步信号功率的方法
公开(公告)号：US5715521A
公开(公告)日：1998-02-03
申请号：US426528
申请日：1995-04-20
申请人： Atsushi Fukasawa , Toshio Kato , Takuro Sato , Manabu Kawabe
发明人： Atsushi Fukasawa , Toshio Kato , Takuro Sato , Manabu Kawabe
IPC分类号： H04B1/707 , H04B1/7097 , H04B7/26 , H04J3/06 , H04J13/00 , H04L7/06 , H04L7/10 , H04W56/00 , H04W76/02 , H04B1/00
CPC分类号： H04B1/7075 , H04J3/0614 , H04L7/06 , H04L7/10
摘要： To initiate communication, a first station generates a synchronization signal and sends the synchronization signal to a second station. When the second station detects the synchronization signal, the second station acquires synchronization and sends a synchronization-acquisition message back to the first station. The first station now reduces the power of the synchronization signal, while continuing to send the synchronization signal, and also begins sending a modulated data signal. The second station uses the synchronization signal to maintain synchronization for demodulating the data signal.
摘要翻译：为了发起通信，第一站产生同步信号并将同步信号发送到第二站。当第二站检测到同步信号时，第二站获取同步并将同步获取消息发送回第一站。现在，第一站降低同步信号的功率，同时继续发送同步信号，并且还开始发送调制的数据信号。第二站使用同步信号来维持用于解调数据信号的同步。

7. 发明授权

US06975607B2 Mobile communication system for accomplishing handover with phase difference of frame sync signals corrected 失效
标题翻译：用于完成帧同步信号的相位差的切换的移动通信系统被校正
公开(公告)号：US06975607B2
公开(公告)日：2005-12-13
申请号：US09854514
申请日：2001-05-15
申请人： Kiyoki Sekine , Manabu Kawabe , Kenji Horiguchi
发明人： Kiyoki Sekine , Manabu Kawabe , Kenji Horiguchi
IPC分类号： H04W36/08 , H04W36/18 , H04Q7/00
CPC分类号： H04W36/18 , H04W36/08
摘要： A method of switching a communication channel when a mobile station moves from one service area to another service area is disclosed. The mobile station determines a difference between the transmission phase of a frame synchronizing signal received from a first base station currently holding a communication channel with the mobile station and the transmission phase of a frame synchronizing signal received from a second base station expected to newly set up a communication channel with the mobile station. The mobile station sends phase difference information representative of the above difference to the first base station via the communication channel. The first base station having received the phase difference information transfers the information to the second base station, causing it to correct the phase of data thereof to be sent to the mobile station. This successfully implements soft handover while guaranteeing the phase synchronization of frames sent from the two base stations.
摘要翻译：公开了当移动台从一个服务区域移动到另一个服务区域时切换通信信道的方法。移动站确定从当前保持通信信道的第一基站接收到的帧同步信号的发送相位与移动台之间的差异以及从预期新设置的第二基站接收的帧同步信号的发送相位与移动台的通信信道。移动台经由通信信道向第一基站发送表示上述差异的相位差信息。已经接收到相位差信息的第一基站将信息传送到第二基站，使其校正要发送给移动台的数据的相位。这成功地实现了软切换，同时保证了从两个基站发送的帧的相位同步。

8. 发明授权

US06259683B1 Mobile communication system for accomplishing handover with phase difference of frame sync signals corrected 失效
标题翻译：用于完成帧同步信号的相位差的切换的移动通信系统被校正
公开(公告)号：US06259683B1
公开(公告)日：2001-07-10
申请号：US08956125
申请日：1997-10-22
申请人： Kiyoki Sekine , Manabu Kawabe , Kenji Horiguchi
发明人： Kiyoki Sekine , Manabu Kawabe , Kenji Horiguchi
IPC分类号： H04J306
CPC分类号： H04W36/18 , H04W36/08
摘要： A method of switching a communication channel when a mobile station moves from one service area to another service area is disclosed. The mobile station determines a difference between the transmission phase of a frame synchronizing signal received from a first base station currently holding a communication channel with the mobile station and the transmission phase of a frame synchronizing signal received from a second base station expected to newly set up a communication channel with the mobile station. The mobile station sends phase difference information representative of the above difference to the first base station via the communication channel. The first base station having received the phase difference information transfers the information to the second base station, causing it to correct the phase of data thereof to be sent to the mobile station. This successfully implements soft handover while guaranteeing the phase synchronization of frames sent from the two base stations.
摘要翻译：公开了当移动台从一个服务区域移动到另一个服务区域时切换通信信道的方法。移动站确定从当前保持通信信道的第一基站接收到的帧同步信号的发送相位与移动台之间的差异以及从预期新设置的第二基站接收的帧同步信号的发送相位与移动台的通信信道。移动台经由通信信道向第一基站发送表示上述差异的相位差信息。已经接收到相位差信息的第一基站将信息传送到第二基站，使其校正要发送给移动台的数据的相位。这成功地实现了软切换，同时保证了从两个基站发送的帧的相位同步。

9. 发明授权

US6137825A Communication system, transmitter and receiver 失效
标题翻译：通信系统，发射机和接收机
公开(公告)号：US6137825A
公开(公告)日：2000-10-24
申请号：US41108
申请日：1998-03-12
申请人： Kiyoki Sekine , Manabu Kawabe
发明人： Kiyoki Sekine , Manabu Kawabe
IPC分类号： H04J13/00 , H04K1/00
CPC分类号： H04J13/0077 , H04B1/707 , H04B2201/70701
摘要： Differences between two adjacent bits of connection control data are derived in sequence. The derived differences are logically combined with a pilot signal and simultaneously with user data. The logically combined signals are spread to spreading bands and added to each other. The added signal is used as a modulating signal and transmitted through phase shift keying (PSK). Thereafter, the PSK modulated carrier is demodulated to derive the modulating signal. The modulating signal is despread to derive a user signal. The user signal includes the user data and the foregoing differences. The modulating signal is further despread to derive the pilot signal with the foregoing differences included. The pilot signal with the foregoing differences is subjected to a conjugate conversion and then multiplied by the user signal so that the foregoing differences are removed from the user signal to obtain the user data. The connection control data is reconstructed from the foregoing differences included in the pilot signal.
摘要翻译：连接控制数据的两个相邻位之间的差异依次导出。导出的差异与导频信号逻辑组合，并与用户数据同时进行。逻辑组合的信号被扩展到扩展频带并相互添加。添加的信号用作调制信号，并通过相移键控（PSK）传输。此后，解调PSK调制载波以导出调制信号。调制信号被解扩以导出用户信号。用户信号包括用户数据和上述差异。进一步解调调制信号以导出具有上述差异的导频信号。具有上述差异的导频信号经历共轭转换，然后乘以用户信号，从而从用户信号中去除上述差异以获得用户数据。从导频信号中包含的上述差异重构连接控制数据。

10. 发明授权

US5463660A Block-spreading code-division multiple-access demodulator with improved interference cancellation 失效
标题翻译：具有改进的干扰消除的块扩展码分多址解调器
公开(公告)号：US5463660A
公开(公告)日：1995-10-31
申请号：US283172
申请日：1994-08-03
申请人： Atsushi Fukasawa , Manabu Kawabe , Akiyoshi Kawahashi , Takuro Sato
发明人： Atsushi Fukasawa , Manabu Kawabe , Akiyoshi Kawahashi , Takuro Sato
IPC分类号： H04J13/00 , H04B1/7107 , H04B1/69
CPC分类号： H04B1/71075
摘要： In a block-spreading code-division multiple-access communication system a demodulator stores received chip data in a separate memory area for each transmitting station. Each area has a capacity of at least two blocks. When a complete block is received from a transmitting station, all blocks of data stored in the corresponding memory area are correlated against a set of product codewords, which are obtained by spreading a set of orthogonal codewords by the transmitting station's spreading code, to find the codeword that gives the maximum correlation value. For the oldest block, this correlation value and information identifying the codeword are output. For all blocks, the maximum correlation value and corresponding product codeword are used to calculate interference correction data, which are subtracted from the data in other memory areas.
摘要翻译：在块扩展码分多址通信系统中，解调器将接收到的码片数据存储在每个发送站的单独的存储区域中。每个区域具有至少两个块的容量。当从发送站接收到完整的块时，存储在对应的存储区域中的所有数据块与通过发送站的扩展码扩展一组正交码字而获得的一组乘积码字相关，以找到给出最大相关值的码字。对于最旧的块，输出该相关值和识别码字的信息。对于所有块，使用最大相关值和相应的乘积码字来计算干扰校正数据，该数据从其他存储区域中的数据中减去。

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