公开(公告)号：EP0825737A1

公开(公告)日：1998-02-25

申请号：EP97903657.1

申请日：1997-03-04

申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.

发明人： HIGUCHI, Kenichi ,  SAWAHASHI, Mamoru ,  ADACHI, Fumiyuki ,  OHNO, Koji ,  HIGASHI, Akihiro

IPC分类号： H04J13/00

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： 实现前向链路控制信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（长码掩码部分复共轭码）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，并且所得到的和通过从第二扩展码发生器（14）馈送的第二扩展码扩展，从而作为扩展调制信号被输出。

公开(公告)号：EP0715440A1

公开(公告)日：1996-06-05

申请号：EP95922721.6

申请日：1995-06-21

申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.

发明人： HIGASHI, Akihiro ,  ADACHI, Fumiyuki ,  OHNO, Koji ,  SAWAHASHI, Mamoru

IPC分类号： H04L27/22

CPC分类号： H04L25/0236 ,  H04L7/08 ,  H04L25/0212 ,  H04L25/0232

摘要： A synchronous detecting method in which the transfer function of a propagation path is estimated by regarding the information symbols adjacent to pilot signals as known symbols and using the information symbols as pseudo-pilot signals. The method includes a step of estimating the transfer function by using the pilot signals, a step of performing interpolation synchronous detection of part of the information symbols by using the estimated transfer function, a step of storing the result of the interpolation synchronous detection as pseudo-pilot signals, a step of reestimating the transfer function related to information symbols corresponding to the pseudo-pilot signals from the pseudo-pilot signals and the received signals corresponding to the pseudo-pilot signal, regarding the pseudo-pilots as known correct signals, and a step of performing interpolation synchronous detection of each information symbol by using the reestimated transfer function. Thus, the detection characteristic can be improved by estimating the transfer function with high accuracy even when the number of symbols per pilot signal is small.

摘要翻译： 一种同步检测方法，其中通过将与导频信号相邻的信息符号作为已知符号并将信息符号用作伪导频信号来估计传播路径的传递函数。 该方法包括通过使用导频信号来估计传递函数的步骤，使用估计的传递函数对信息符号的一部分进行内插同步检测的步骤，将插值同步检测的结果存储为伪随机数的步骤， 导频信号，将与伪导频信号相对应的信息符号与对应于伪导频信号的接收信号相对应的信息符号的传递函数重新估计为伪信号作为已知正确信号的步骤，以及 通过使用重新估计的传递函数来执行每个信息符号的插值同步检测的步骤。 因此，即使每个导频信号的符号数量少，也可以通过高精度地估计传递函数来提高检测特性。

公开(公告)号：EP1011211A1

公开(公告)日：2000-06-21

申请号：EP98914086.8

申请日：1998-04-17

申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.

发明人： NAKAMURA, Takehiro ,  HAGIWARA, Junichiro ,  NAKANO, Etsuhiro ,  OHNO, Koji ,  ONOE, Seizo ,  HIGASHI, Akihiro, ,  TAMURA, Motoshi ,  NAKANO, Masatomo ,  KAWAKAMI, Hiroshi ,  MORIKAWA, Hiroki

IPC分类号： H04B7/26 ,  H04J13/00 ,  H04L12/28

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 using ATM cells, and with the mobile stations using the CDMA signals by mapping a plurality of logical channels into a plurality of physical channels. The CDMA signals are spreading using two types of spreading code sequences, that is, a short code and a long code.

摘要翻译： 一种基站，包括发射和接收放大器，用于放大与移动台交换的CDMA信号的装置; 连接到发射和接收放大器，用于进行D /反式mitted信号的A转换并下变为基带扩频，接着正交调制一个射频级，以及用于执行接收信号的准相干检测，然后由A / D转换 ; 与用于实施反mitted信号和接收信号的基带信号处理的无线电级连接的基带信号处理器; 具有用于实现与外部的通道接口的基带信号处理器连接的传输接口; 以及用于执行控制的基站控制器：诸如无线电信道的管理和建立和释放无线电信道。 基站利用ATM信元的外部通道连通，并与通过映射逻辑信道与多个成物理信道与多个使用CDMA信号的移动站。 CDMA信号使用两种类型的扩频码序列的扩频，也就是，短码和长码。

公开(公告)号：EP0977393A1

公开(公告)日：2000-02-02

申请号：EP98914026.4

申请日：1998-04-15

申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.

发明人： HIGASHI, Akihiro ,  NAGATA, Kiyohito ,  YUNOKI, Kazufumi ,  TAKAGI, Hirofumi ,  OGAWA, Shinsuke, 1-14-15-2, Morigaoka, ,  OHNO, Koji ,  NAKAMURA, Takehiro ,  HAGIWARA, Junichiro ,  NAKA, Nobuhiko ,  HIGUCHI, Kenichi ,  HATTORI, Hiroyuki

IPC分类号： H04J13/00

CPC分类号： H04W52/325 ,  H04B1/707 ,  H04J13/0077 ,  H04J13/16 ,  H04W52/12 ,  H04W52/42 ,  H04W52/50

摘要： A mobile station MS regarding this invention is consists of a transmission and receiving amplifier unit AMP, a radio unit TRX, a baseband signal processing unit BB, a control unit MS-CNT and a terminal interface unit TERM-INT. In the multi-code-transmission, the efficiency in use of the frequency resources is enhanced and the improvement of the communication quality is realized by transmitting the control information (a pilot symbol and a TPC symbol), with increasing the transmission power by one designated dedicated physical channel only. It is possible to improve the efficiency in use of the frequency resources and the communication quality, and to reduce the power consumption, by determining the transmission/discard of the transmission information according to the communication quality or the communication status. Furthermore, it is possible to improve the efficiency in use of the frequency resources and to reduce the power consumption, by avoiding that the calling occurs frequently.

摘要翻译： 关于本发明的移动台MS包括发射和接收放大器单元AMP，无线电单元TRX，基带信号处理单元BB，控制单元MS-CNT和终端接口单元TERM-INT。 在多码传输中，提高了频率资源的使用效率，并且通过发送控制信息（导频符号和TPC符号），通过将发送功率提高一个指定来实现通信质量的提高 专用物理频道。 通过根据通信质量或通信状态确定发送信息的发送/丢弃，可以提高频率资源的使用效率和通信质量，并降低功耗。 此外，通过避免频繁发生呼叫，可以提高频率资源的使用效率并降低功耗。

公开(公告)号：EP0668662A1

公开(公告)日：1995-08-23

申请号：EP94923066.8

申请日：1994-08-04

申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.

发明人： ADACHI, Fumiyuki ,  SAWAHASHI, Mamoru ,  HIGASHI, Akihiro ,  OHNO, Koji ,  DOHI, Tomohiro Tomioka-Daiichi-Dokushinryo A-408

IPC分类号： H04B1/707

CPC分类号： H04B7/0894 ,  H04B1/712 ,  H04B7/0671

摘要： A repeater for improving a RAKE receiving effect. A signal received from a base station passes in parallel through a first path including a first delay element, and a second path not including a delay delement, and is sent to a mobile station. A signal received from the mobile station passes in parallel through a third path including a second delay element, and a fourth path not including a delay element, and is sent to the base station. The delay time for the delay elements is set to be longer than one chip time for a diffusion code. Consequently, a re- soluble multiple wave is generated forcibly in a RAKE receiver. In the RAKE receiver, the amplitude of a desired wave component alone is estimated with respect to each delay wave. With reference to this amplitude, the weighing of each delay wave component from a detector is done, and the weighed signals are synthesized and subjected to code judgement.

摘要翻译： 用于提高RAKE接收效果的中继器。 从基站接收的信号通过包括第一延迟元件的第一路径和不包括延迟抵消的第二路径并行通过，并被发送到移动台。 从移动站接收的信号通过包括第二延迟元件的第三路径和不包括延迟元件的第四路径并行通过，并被发送到基站。 延迟元件的延迟时间被设置为长于扩散码的一个码片时间。 因此，在RAKE接收机中强制产生可分解的多波。 在RAKE接收机中，相对于每个延迟波估计所需波分量的振幅。 参考该幅度，对来自检测器的每个延迟波分量进行称量，并且对加权信号进行合成并进行代码判断。