公开(公告)号：US5436918A

公开(公告)日：1995-07-25

申请号：US929833

申请日：1992-08-14

申请人： Osamu Kato ,  Kazuyuki Miya

发明人： Osamu Kato ,  Kazuyuki Miya

IPC分类号： H04L25/08 ,  H03M13/00 ,  H03M13/23 ,  H03M13/41 ,  H03M13/12

CPC分类号： H03M13/3961 ,  H03M13/00 ,  H03M13/23 ,  H03M13/41

摘要： The invention intends to improve an error correcting capability in an error correction encoding/decoding apparatus. On the encoding side, after a fixed bit of 0 or 1 was inserted into information signal series to be convolutional correction encoded, the resultant information signal series is convolutionally encoded. On the decoding side, by using the fixed bit inserting position stored in a fixed bit inserting position storing circuit, the information signal series is decoded while limiting the state transition corresponding to the bit position at which the information bit is the fixed bit into only one kind that is decided by the value of the fixed bit.

摘要翻译： 本发明旨在提高纠错编码/解码装置中的纠错能力。 在编码侧，将0或1的固定位插入到要进行卷积校正编码的信息信号序列中之后，对所得到的信息信号序列进行卷积编码。 在解码侧，通过使用固定位插入位置存储电路中存储的固定位插入位置，解码信息信号序列，同时将对应于信息位为固定位的位位置的状态转换限制为仅一个 种类由固定位的值决定。

公开(公告)号：US5398254A

公开(公告)日：1995-03-14

申请号：US275658

申请日：1994-07-15

申请人： Kazuyuki Miya ,  Osamu Kato

发明人： Kazuyuki Miya ,  Osamu Kato

IPC分类号： H04L25/08 ,  H03M13/23 ,  H03M13/39 ,  H04L1/00 ,  G06F11/10 ,  H03M13/12

CPC分类号： H03M13/39 ,  H03M13/23 ,  H04L1/0054

摘要： The invention provides greater error correction capability in an error correction encoding/decoding system of a digital mobile telephone or so forth. In a viterbi decoding system at a receiver side, a branch metric is calculated and stored without selecting a path with respect to a plurality of branches corresponding to a parameter having a correlation between frames. Also, by utilizing a separately stored parameter value in a previous frame, a transition probability of the parameter value in the current frame is obtained, a metric value of a path is converted and added to an accumulated path metric value up to the previous branch, a comparison of the metric values at various states is performed to select the path having higher likelihood to perform decoding by maximum likelihood decoding.

摘要翻译： 本发明在数字移动电话的纠错编码/解码系统等中提供更大的纠错能力。 在接收机侧的维特比解码系统中，计算并存储分支度量，而不选择与具有帧之间的相关性的参数对应的多个分支的路径。 此外，通过利用前一帧中分开存储的参数值，获得当前帧中的参数值的转移概率，将路径的度量值转换并添加到直到先前分支的累积路径量度值， 执行各种状态下的度量值的比较，以选择通过最大似然解码执行解码的可能性更高的路径。

公开(公告)号：US06480479B1

公开(公告)日：2002-11-12

申请号：US09676507

申请日：2000-10-02

申请人： Kazuyuki Miya ,  Masatoshi Watanabe ,  Osamu Kato

发明人： Kazuyuki Miya ,  Masatoshi Watanabe ,  Osamu Kato

IPC分类号： H04B7216

CPC分类号： H04W52/32 ,  H04B1/707 ,  H04B1/7097 ,  H04B7/2637 ,  H04B2201/70701

摘要： A base station transmits, in addition to a pilot channel, signals which are multiplexed with pilot symbols inserted in the respective signals in communication channels. As the transmission of the pilot channel as a reference signal for coherent detection is unnecessary with high power so as to attain high reliability, the pilot channel can be transmitted with low power by means of weight in comparison with the communication channel, so that interference with the communication channel of any other station is reduced. Moreover, accurate coherent detection can be made from the pilot symbol inserted in the communication channel on the mobile station side.

摘要翻译： 除了导频信道之外，基站还发送与在通信信道中的各个信号中插入的导频符号多路复用的信号。 由于作为用于相干检测的参考信号的导频信道的传输不需要高功率以便获得高可靠性，所以与通信信道相比，可以通过权重以低功率​​发送导频信道，从而干扰 任何其他站的通信信道减少。 此外，可以从插入在移动台侧的通信信道中的导频符号进行准确的相干检测。

公开(公告)号：US06400700B1

公开(公告)日：2002-06-04

申请号：US09457785

申请日：1999-12-09

申请人： Kazuyuki Miya ,  Masatoshi Watanabe ,  Osamu Kato

发明人： Kazuyuki Miya ,  Masatoshi Watanabe ,  Osamu Kato

IPC分类号： H04B7216

CPC分类号： H04W52/32 ,  H04B1/707 ,  H04B1/7097 ,  H04B7/2637 ,  H04B2201/70701

摘要： A base station transmits, in addition to a pilot channel, signals which are multiplexed with pilot symbols inserted in the respective signals in communication channels. As the transmission of the pilot channel as a reference signal for coherent detection is unnecessary with high power so as to attain high reliability, the pilot channel can be transmitted with low power by means of weight in comparison with the communication channel, so that interference with the communication channel of any other station is reduced. Moreover, accurate coherent detection can be made from the pilot symbol inserted in the communication channel on the mobile station side.

公开(公告)号：US5559789A

公开(公告)日：1996-09-24

申请号：US369485

申请日：1995-01-06

申请人： Takayuki Nakano ,  Kazuyuki Miya ,  Osamu Kato ,  Masatoshi Watanabe

发明人： Takayuki Nakano ,  Kazuyuki Miya ,  Osamu Kato ,  Masatoshi Watanabe

IPC分类号： H04B7/005 ,  H04B7/26 ,  H04J13/04

CPC分类号： H04W52/325 ,  H04B7/2618 ,  H04B7/2637 ,  H04W52/10 ,  H04W52/16

摘要： In addition to a structure of a conventional CDMA/TDD radio communication system, a base station includes a pilot signal generating circuit for generating a pilot signal that has a constant transmission power level and is known in mobile units and a pilot channel spreading circuit for transmitting the pilot signal to the mobile units through a transmission line. Each of the mobile units includes a pilot signal reception level measuring circuit for measuring reception power of the received pilot signal and a transmission power control circuit for controlling transmission power of a power amplification circuit based on the measured reception power of the received pilot signal.

摘要翻译： 除了常规的CDMA / TDD无线电通信系统的结构之外，基站还包括一个导频信号产生电路，用于产生具有恒定的发射功率电平且以移动单元已知的导频信号，以及用于传输的导频信道扩展电路 该导频通过传输线向移动单元发送信号。 每个移动单元包括用于测量接收到的导频信号的接收功率的导频信号接收电平测量电路和用于基于所测量的接收到的导频信号的接收功率来控制功率放大电路的发射功率的发射功率控制电路。

公开(公告)号：US5438701A

公开(公告)日：1995-08-01

申请号：US162358

申请日：1993-12-07

申请人： Daisuke Yamada ,  Osamu Kato ,  Kazuyuki Miya ,  Taku Nagase

发明人： Daisuke Yamada ,  Osamu Kato ,  Kazuyuki Miya ,  Taku Nagase

IPC分类号： H04B7/26 ,  H04W52/02 ,  H04B1/38

CPC分类号： H04W52/0229 ,  H04W52/0296 ,  Y02B60/50

摘要： When a power supply of a mobile radio apparatus is turned on, a power supply change-over switch of a power supply control unit is changed over to the side of a pager unit to turn on only a power supply of the pager unit, so that a pager network which does not require position registration is utilized to perform intermittent receiving operation with low power consumption. When there is an incoming call to the pager unit, a CPU of the power supply control unit receives an incoming control signal from a pager decoding circuit and changes over the power supply change-over switch to the side of a radio-telephone line terminal unit to turn on the radio telephone line terminal unit and turn off the pager unit. The CPU sends a control signal to a timing control circuit of the radio-telephone line terminal unit so that the position registration is performed by utilizing a mobile radio network and an operation mode of the mobile radio apparatus proceeds to a usual talking mode. After a pager calling has been performed in a calling side, the mobile radio apparatus is called by the portable telephone number and talking is then is made. When the talking has been finished, the CPU receives a control signal from the timing control circuit and changes over the power supply change-over switch to the side of the pager unit again to turn on the pager unit to enter a waiting state for reception.

摘要翻译： 当移动无线电设备的电源接通时，电源控制单元的电源转换开关切换到寻呼机单元的侧面，仅接通寻呼机单元的电源，从而 利用不需要位置登记的寻呼机网络，以低功耗进行间歇接收动作。 当对寻呼机单元进行呼入时，电源控制单元的CPU接收来自寻呼机解码电路的输入控制信号，并将电源切换开关切换到无线电话线路终端单元侧 打开无线电话线终端单元并关闭寻呼机单元。 CPU向无线电话线路终端单元的定时控制电路发送控制信号，使得通过利用移动无线电网络执行位置登记，并且移动无线电设备的操作模式进行到通常的通话模式。 在呼叫方执行寻呼机呼叫之后，移动无线电设备被便携式电话号码呼叫，然后进行通话。 当通话完成时，CPU接收来自定时控制电路的控制信号，并再次切换到寻呼机单元侧的电源切换开关，以使寻呼机单元接通等待状态。

公开(公告)号：US06259721B1

公开(公告)日：2001-07-10

申请号：US09091836

申请日：1998-06-30

申请人： Mitsuru Uesugi ,  Osamu Kato

发明人： Mitsuru Uesugi ,  Osamu Kato

IPC分类号： H04B1500

CPC分类号： H04L1/02 ,  H04B1/707 ,  H04J13/16

摘要： The present invention is characterized by that, at a reception section of a base station in a CDMA system including a reception antenna, a radio section and the number of demodulators corresponding to the number of users where spreading codes of a plurality of spreading factors are available, an algorithm diversity controller and a selector are prepared, information concerning spreading factors of spreading codes utilized by users and others are applied to the algorithm diversity controller, algorithm diversity controller instructs the number of demodulators prepared corresponding to the number of users and the selector, and when signals transmitted by a user utilizing a spreading code of a low spreading factor, i.e. signals with high symbol rate, are received, by demodulating signals with different reception methods or different parameters at demodulators leftover because of the low spreading factor, the demodulated signals of the best quality are selected.

摘要翻译： 本发明的特征在于，在包括接收天线的CDMA系统中的基站的接收部分，无线电部分和与多个扩频因子的扩展码可用的用户数相对应的解调器数量 ，准备了算法分集控制器和选择器，将与用户等使用的扩频码的扩展因子有关的信息应用于算法分集控制器，算法分集控制器指示与用户数量和选择器对应的解调器数量， 并且当由用户利用低扩频因子的扩频码（即具有高符号速率的信号）发送的信号时，由于低扩频因子，在解调器剩余的解调器处理具有不同接收方式或不同参数的信号，解调信号 选择最好的质量。

公开(公告)号：US06931238B1

公开(公告)日：2005-08-16

申请号：US09830993

申请日：2000-09-18

申请人： Junichi Aizawa ,  Osamu Kato ,  Mitsuru Uesugi ,  Takeshi Akiyama

发明人： Junichi Aizawa ,  Osamu Kato ,  Mitsuru Uesugi ,  Takeshi Akiyama

IPC分类号： H01Q3/24 ,  H01Q21/28 ,  H04B1/04 ,  H04B7/06 ,  H04B7/12 ,  H04J3/00 ,  H03C7/02

CPC分类号： H04B7/0604 ,  H04B7/12

摘要： Radio section 103 multiplies modulated transmission signals A to D respectively by a carrier with a frequency of fA, fB, fC or fD, thereby performs the frequency conversion, and outputs the resultant signals to switch 104. Switch 104 switches between frequency conversion sections fA to fD and between antennas A to D to connect, and timing control section 105 outputs a timing control signal to switching control section 107 at time intervals for which timer 106 is preset. Switching control section 107 controls the switching of switch 104 according to switching patterns which are preset in switching pattern storage section 108 and which are each indicative of a connection relationship between antennas A to D and frequency conversion sections fA to fD.

摘要翻译： 无线电部分103通过频率fA，fB，fC或fD的载波分别调制发射信号A至D，从而进行频率转换，并将结果信号输出到开关104。 开关104在频率转换部分fA至fD之间以及天线A至D之间切换以连接，并且定时控制部分105以预定定时器106的时间间隔向切换控制部分107输出定时控制信号。 切换控制部107根据在切换模式存储部108中预先设定的切换模式来控制开关104的切换，各切换模式各自表示天线A〜D与频率转换部fA〜fD的连接关系。

公开(公告)号：US06424618B1

公开(公告)日：2002-07-23

申请号：US09091422

申请日：1998-06-24

申请人： Mitsuru Uesugi ,  Taku Nagase ,  Osamu Kato

发明人： Mitsuru Uesugi ,  Taku Nagase ,  Osamu Kato

IPC分类号： H04J1300

CPC分类号： H04J13/18 ,  H04J13/004 ,  H04J13/12

摘要： The present invention relates to a code generating method for combining an orthogonal code for CDMA having a specific spreading factor and its polarity inverted spreading code to generate another spreading code having a larger spreading factor than that of the spreading code. And the present invention relates to a code selecting method for combining an orthogonal code for CDMA having a specific spreading factor and its polarity inverted spreading code to generate another spreading code having a larger spreading factor than that of the spreading code, then to assign the generated orthogonal code for a user in order of users having an orthogonal code of small spreading factor.

摘要翻译： 本发明涉及一种用于组合具有特定扩展因子的CDMA正交码及其极性反转扩展码的码产生方法，以产生具有比扩频码扩频率更大的扩展因子的另一扩展码。 本发明涉及一种编码选择方法，用于组合具有特定扩展因子的CDMA的正交码及其极性反转的扩展码，以产生具有比扩展码更大的扩展因子的另一扩展码，然后分配所生成的 正交码的用户按照具有小扩频因子的正交码的用户的顺序。

公开(公告)号：US06938195B1

公开(公告)日：2005-08-30

申请号：US09701309

申请日：2000-03-23

申请人： Guizeng Shi ,  Osamu Kato ,  Mitsuru Uesugi

发明人： Guizeng Shi ,  Osamu Kato ,  Mitsuru Uesugi

IPC分类号： H03M13/00 ,  H04B7/26 ,  H04L1/14 ,  H04L1/18 ,  H04L12/28 ,  H04L29/08 ,  H04Q7/34

CPC分类号： H04L1/1809 ,  H04L1/14 ,  H04L1/1803 ,  H04L1/1806

摘要： A communication terminal apparatus returns a unit of transmission with an error detected. A base station apparatus generates information indicating a position of an error within the unit of transmission while comparing a unit of transmission returned from the communication terminal apparatus with a corresponding unit of transmission stored in a buffer previous to transmission of the unit of transmission. The base station apparatus transmits the generated information to the communication terminal apparatus. The communication terminal apparatus corrects the error of the unit of transmission on the basis of the information.

摘要翻译： 通信终端装置返回检测到的错误的发送单位。 基站装置在通信终端装置返回的发送单位与发送单位发送前的缓冲器中存储的相应发送单位进行比较时，生成表示发送单位内的错误位置的信息。 基站装置将生成的信息发送到通信终端装置。 通信终端装置根据该信息来校正发送单元的错误。