公开(公告)号：US06493330B1

公开(公告)日：2002-12-10

申请号：US09615325

申请日：2000-07-12

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：USRE37870E1

公开(公告)日：2002-10-08

申请号：US09154709

申请日：1998-09-17

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： H04J1304

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：US06351458B2

公开(公告)日：2002-02-26

申请号：US08934978

申请日：1997-09-22

申请人： Kazuyuki Miya ,  Osamu Kato

发明人： Kazuyuki Miya ,  Osamu Kato

IPC分类号： H04Q700

CPC分类号： H04J13/00

摘要： Wireless communication equipment for a CDMA cellular wireless system operating FDD communication and TDD communication of a simplified circuit structure reduces interference with a communication channel. A wireless transmitter for an SS-DS CDMA cellular wireless system operating FDD communications and TDD communications includes an FDD pilot channel for outputting pilot channel signals in an FDD band, an FDD control channel for outputting control channel signals in the FDD band, FDD communications channels for outputting communications channel signals in the FDD band, a TDD pilot channel for outputting pilot channel signals in a TDD band, and a TDD communications channel for outputting communication channel signals in the TDD band. The wireless transmitter does not have a TDD control channel for outputting control channel signals in the TDD band. Control channel signals are transmitted only in the FDD band.

摘要翻译： 用于操作FDD通信的CDMA蜂窝无线系统和简化电路结构的TDD通信的无线通信设备减少了对通信信道的干扰。 用于操作FDD通信和TDD通信的SS-DS CDMA蜂窝无线系统的无线发射机包括用于在FDD频带中输出导频信道信号的FDD导频信道，用于在FDD频带中输出控制信道信号的FDD控制信道，FDD通信信道 用于输出FDD频带中的通信信道信号，用于在TDD频带中输出导频信道信号的TDD导频信道和用于在TDD频带中输出通信信道信号的TDD通信信道。 无线发射机没有用于在TDD频带中输出控制信道信号的TDD控制信道。 控制信道信号仅在FDD频带中传输。

公开(公告)号：US5341384A

公开(公告)日：1994-08-23

申请号：US778982

申请日：1991-11-12

申请人： Kazuyuki Miya ,  Osamu Kato ,  Kouichi Honma

发明人： Kazuyuki Miya ,  Osamu Kato ,  Kouichi Honma

IPC分类号： G06F11/10 ,  G11B20/18 ,  H03M13/00 ,  H03M13/09 ,  H03M13/29

CPC分类号： H03M13/09 ,  G11B20/1876 ,  H03M13/29

摘要： An error detection method used for digital communication which intends to reduce the probability of outputting the speech obtained by decoding the data that includes an error. The speech data encoded in an error detection code and an error correction code is transmitted. On a receiving side, the data with an error detected in either one of decoding of the error correction code and CRC checking is interpolated so that it is possible to prevent the data which actually includes an error from being decoded into speech as it is.

摘要翻译： PCT No.PCT / JP91 / 00408 Sec。 371日期1991年11月12日 102（e）日期1991年11月12日PCT 1991年3月28日PCT公布。 WO91 / 15901 PCT出版物 日期：1991年10月17日。一种用于数字通信的错误检测方法，其旨在降低通过解码包括错误的数据而获得的语音的输出概率。 发送以错误检测码和纠错码编码的语音数据。 在接收侧，对在纠错码和CRC校验的解码中检测到的错误的数据进行内插，使得可以将实际包含误差的数据原样被解码为语音。

公开(公告)号：US06522625B1

公开(公告)日：2003-02-18

申请号：US09199195

申请日：1998-11-25

申请人： Masaki Hayashi ,  Kazuyuki Miya ,  Osamu Kato

发明人： Masaki Hayashi ,  Kazuyuki Miya ,  Osamu Kato

IPC分类号： H04J1100

CPC分类号： H04B1/7077 ,  H04B1/707 ,  H04B1/70735 ,  H04B1/708 ,  H04B1/7083 ,  H04B7/2618 ,  H04J13/16

摘要： Symbol 102 that is spread with the only short spreading code and inserted in synchronism with a long spreading code is specified by detecting the correlation with only the short spreading code. Next, another short spreading code indicative of a timing of reverse and forward link switching is specified, where the short spreading code is multiplexed at the same position as that of the detected symbol. The detection of the symbols spread with only these spreading codes enables to acquire synchronization of the long spreading code, synchronization of switching of reverse and forward links, and synchronization of a transmission frame. It is thereby possible to reduce synchronization acquisition time for the long spreading and an easy planning of base station locations without decreasing the frequency utilization efficiency.

公开(公告)号：USRE36591E

公开(公告)日：2000-02-29

申请号：US231111

申请日：1999-01-14

申请人： Masaki Hayashi ,  Kazuyuki Miya ,  Osamu Kato

发明人： Masaki Hayashi ,  Kazuyuki Miya ,  Osamu Kato

IPC分类号： H04W16/28 ,  H04B1/707 ,  H04B1/7115 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04B7/26 ,  H04J13/00 ,  H04J13/04 ,  H04J3/00 ,  H04B7/216

CPC分类号： H04B7/04 ,  H04B7/0608 ,  H04B7/2618

摘要： In a base station which has a plurality of antennas, each of a plurality of comparison circuits operates to compare correlation levels, which are obtained by despreading received signals for a plurality of channels, with each other with respect to the antennas. Each of a plurality of transmission antenna selecting circuits operates to determine from which antenna a transmission signal is to be transmitted for every channel. Each of a plurality of multiplexing circuits operates to multiplex the transmission signals of the individual channels, which are spread, for every antenna. As a result, on the basis of the result of the comparison of the correlation levels with respect to the antennas, a transmission antenna is selected for every channel, and the signals of the channels that are to be transmitted by a given antenna are multiplexed, whereby the base station achieves transmission diversity.

摘要翻译： 在具有多个天线的基站中，多个比较电路中的每一个用于比较通过解扩多个信道的接收信号而获得的相关电平相对于天线的相互关系。 多个发送天线选择电路中的每一个操作以确定每个信道将从哪个天线发送一个发送信号。 多个复用电路中的每一个都对每个天线进行多路复用各个信道的传播信号，这些信道是扩展的。 结果，基于相对于天线的相关电平的比较的结果，为每个信道选择发送天线，并且由给定天线发送的信道的信号被多路复用， 从而基站实现了传输分集。

公开(公告)号：US6028852A

公开(公告)日：2000-02-22

申请号：US815621

申请日：1997-03-13

申请人： Kazuyuki Miya ,  Masatoshi Watanabe ,  Osamu Kato

发明人： Kazuyuki Miya ,  Masatoshi Watanabe ,  Osamu Kato

IPC分类号： H04B1/707 ,  H04B1/7073 ,  H04B1/7097 ,  H04B7/005 ,  H04B7/26 ,  H04J13/00 ,  H04W72/04 ,  H04B15/00

CPC分类号： H04W52/32 ,  H04B1/707 ,  H04B7/2637 ,  H04B1/7097 ,  H04B2201/70701 ,  Y02B60/50

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：US5598404A

公开(公告)日：1997-01-28

申请号：US388416

申请日：1995-02-14

申请人： Masaki Hayashi ,  Kazuyuki Miya ,  Osamu Kato

发明人： Masaki Hayashi ,  Kazuyuki Miya ,  Osamu Kato

IPC分类号： H04W16/28 ,  H04B1/707 ,  H04B1/7115 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04B7/26 ,  H04J13/00 ,  H04J13/04 ,  H04L5/14

CPC分类号： H04B7/04 ,  H04B7/0608 ,  H04B7/2618

摘要： In a base station which has a plurality of antennas, each of a plurality of comparison circuits operates to compare correlation levels, which are obtained by despreading received signals for a plurality of channels, with each other with respect to the antennas. Each of a plurality of transmission antenna selecting circuits operates to determine from which antenna a transmission signal is to be transmitted for every channel. Each of a plurality of multiplexing circuits operates to multiplex the transmission signals of the individual channels, which are spread, for every antenna. As a result, on the basis of the result of the comparison of the correlation levels with respect to the antennas, a transmission antenna is selected for every channel, and the signals of the channels that are to be transmitted by a given antenna are multiplexed, whereby the base station achieves transmission diversity.

摘要翻译： 在具有多个天线的基站中，多个比较电路中的每一个用于比较通过解扩多个信道的接收信号而获得的相关电平相对于天线的相互关系。 多个发送天线选择电路中的每一个操作以确定每个信道将从哪个天线发送一个发送信号。 多个复用电路中的每一个都对每个天线进行多路复用各个信道的传播信号，这些信道是扩展的。 结果，基于相对于天线的相关电平的比较的结果，为每个信道选择发送天线，并且由给定天线发送的信道的信号被多路复用， 从而基站实现了传输分集。

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。