公开(公告)号：EP0784385B1

公开(公告)日：1999-06-09

申请号：EP97100428.8

申请日：1997-01-13

申请人： YOZAN INC. ,  KOKUSAI ELECTRIC CO., LTD.

发明人： Zhou, Changming ,  Shou, Guoliang ,  Urabe, Kenzo, c/o Kokusai Electric Co., Ltd ,  Miyatani, Tetsuhiko, c/o Kokusai Electric Co., Ltd

IPC分类号： H04B1/707 ,  H04B7/26

CPC分类号： H04B1/71075

公开(公告)号：EP0874470A2

公开(公告)日：1998-10-28

申请号：EP98106808.3

申请日：1998-04-15

申请人： Yozan Inc.

发明人： Zhou, Changming ,  Zhou, Xuping ,  Shou, Guoliang

IPC分类号： H04B1/16 ,  H04B1/40

CPC分类号： H04B1/1615 ,  H04W52/029 ,  Y02D70/40

摘要： A waiting circuit incorporated within a portable terminal of a mobile communication system, for detecting a predetermined signal from a base station so as to start other circuits in a sleep mode than the waiting circuit. The predetermined signal is generated in the base station at a speed of a predetermined symbol rate and modulated to be a intermediate frequency signal.
The waiting circuit samples the intermediate frequency signal in response to a sampling clock of a speed of an integer times as quick as the symbol rate. The sampled signal is input to a matched filter for multiplying the sampled signal by a predetermined sequence of coefficients. This coefficients corresponds to the intermediate frequency signal sampled by the sub-sampling circuit.

摘要翻译： 一种结合在移动通信系统的便携式终端内的等待电路，用于检测来自基站的预定信号，以便开始休眠模式中的其它电路等于等待电路。 在基站中以预定符号速率的速度生成预定信号，并将其调制为中频信号。 等待电路响应于与符号速率相同的整数倍的速度的采样时钟对中频信号进行采样。 采样信号被输入到匹配滤波器，用于将采样信号乘以预定的系数序列。 该系数对应于由次采样电路采样的中频信号。

公开(公告)号：EP0871298A2

公开(公告)日：1998-10-14

申请号：EP98105989.2

申请日：1998-04-01

申请人： YOZAN INC.

发明人： Zhou, Changming ,  Shou, Guoliang

IPC分类号： H04B1/707

CPC分类号： H04B1/7093

摘要： The present invention provides a complex despreading system easily-arranged and small circuit by not setting pairs of adders at the output area. Using a complex matched filter for despreading received signals with a QPSK system in the primary modulation and BPSK in the secondary modulation, each I- and Q-channel multiplication and addition circuit input area includes a pair of adders. In one of these adders, the I-channel multiplication and addition circuit multiplies and adds a spread code to those added in-phase and quadrature components of a received signal. In the other adder of the pair, the circuit multiplies and adds a spread code to that in-phase component subtracted from the quadrature one.

公开(公告)号：EP0790712A2

公开(公告)日：1997-08-20

申请号：EP97102710.7

申请日：1997-02-19

申请人： YOZAN INC. ,  KOKUSAI ELECTRIC CO., LTD.

发明人： Zhou, Changming ,  Shou, Guoliang ,  Zhou, Xuping ,  Yamamoto, Makoto ,  Urabe, Kenzo ,  Takatori, Suano

IPC分类号： H04B1/707

CPC分类号： H04B1/7093

摘要： The demodulator has a plurality of matched filters in parallel. Each matched filter has a different binary PN code, a plurality of sample holders, a plurality of multipliers, an adder, and a controller. The sample holders has a common input, a switch, a first capacitor, a first inverse amplifier with an output and an input connected to the common input through the switch and the capacitor, and a first feedback capacitor for feeding the output of the first inverse amplifier back to the input. Each multiplier has a first and second sub-multiplexers, one of sub-multiplexer selecting corresponding sample holder output and another sub-multiplexer selecting a reference voltage.

摘要翻译： 解调器具有并联的多个匹配滤波器。 每个匹配滤波器具有不同的二进制PN码，多个采样保持器，多个乘法器，加法器和控制器。 样本保持器具有公共输入，开关，第一电容器，具有输出的第一反相放大器和通过开关和电容器连接到公共输入的输入端，以及用于馈送第一反相器的输出的第一反馈电容器 放大器返回输入。 每个乘法器具有第一和第二子复用器，子复用器中的一个选择对应的采样保持器输出，另一个副多路复用器选择参考电压。

公开(公告)号：EP0886385B1

公开(公告)日：2004-09-22

申请号：EP98111256.8

申请日：1998-06-18

申请人： Yozan Inc. ,  NTT DoCoMo, Inc.

发明人： Zhou, Changming ,  Zhou, Xuping ,  Sawahashi, Mamoru ,  Adachi, Fumiyuki

IPC分类号： H04B1/707

CPC分类号： H04B1/707 ,  H04B1/7115 ,  H04B2201/70701

摘要： A signal reception apparatus for DS-CDMA communication system having a complex matched filter for despreading a received signal into I-and Q-components Di and Dq of despread signal. Di and Dq are input to a path selection portion 13 for extracting a phase error in a pilot symbol block of the despread signal. A phase compensation signal is calculated according to the phase error in the portion 13. An information symbol is compensated according to the phase compensation signal. An electrical power is calculated from an average of the phase compensation signal of several slots for selecting paths to be received. The selected paths are combined with phase synchronized by a rake combiner 14.

公开(公告)号：EP0853388A3

公开(公告)日：2003-01-22

申请号：EP98100151.4

申请日：1998-01-07

申请人： Yozan Inc.

发明人： Shou, Guoliang ,  Zhou, Changming ,  Zhou, Xuping

IPC分类号： H04B1/707 ,  H04L27/38

CPC分类号： H04B1/711 ,  H04B1/7093 ,  H04B1/7117 ,  H04B7/01 ,  H04B2201/70701

摘要： Phases of the spread spectrum signal are corrected with a high degree of accuracy by a minimum of circuitry. One of phase correction circuits 31 - 34 of the receiver corresponds to each path. The I-component and Q-component of a despread output are supplied to the phase correction circuits 31 - 34. A phase error extractor 1 extracts the first phase error from a received pilot block. A phase corrector 2 corrects the phase error of a received information symbol using a correction vector that has been calculated based on the first phase error. The RAKE synthesizer 25 synthesizes the corrected received signal with outputs of the phase correction circuits of other paths and outputs the synthesized signal to a temporary determiner 3 which temporarily determines an information symbol to be processed. The phase error is modified in a correction vector modifier 4 using the temporary determination result. A new correction vector is calculated based on the modified phase error. In this way, the correction vectors are sequentially modified based on the temporary determination results for the information symbols.

公开(公告)号：EP0883240B1

公开(公告)日：2002-09-25

申请号：EP98109867.6

申请日：1998-05-29

申请人： Yozan, Inc.

发明人： Zhou, Changming ,  Shou, Guoliang ,  Lin, Shengmin ,  Tomatsu, Takashi ,  Chen, Jie

IPC分类号： H03F3/00 ,  H03F1/30

CPC分类号： H03F1/303 ,  H03F3/005

公开(公告)号：EP0932262A2

公开(公告)日：1999-07-28

申请号：EP98124528.5

申请日：1998-12-22

申请人： Yozan Inc. ,  Ntt Mobile Communications Network Inc.

发明人： Zhou, Changming ,  Zhou, Xuping ,  Sawahashi, Mamura ,  Adachi, Fumiyuka

IPC分类号： H04B1/707

CPC分类号： H04B1/707

摘要： A plurality of sets of spreading code sequences are store in registers and selectively supplied to matched filters. The soft-handover, multi-code processing and long-delay paths can be processed by a small circuits.

摘要翻译： 多组扩展码序列存储在寄存器中并选择性地提供给匹配滤波器。 软切换，多码处理和长延迟路径可以由小电路处理。

公开(公告)号：EP0884856A2

公开(公告)日：1998-12-16

申请号：EP98110472.2

申请日：1998-06-08

申请人： Yozan Inc.

发明人： Zhou, Changming ,  Shou, Guoliang ,  Zhou, Xuping ,  Suzuki, Kunihiko ,  Yamamaoto, Makoto

IPC分类号： H04B1/707

CPC分类号： H04B1/7077 ,  H04B1/70735 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70702 ,  H04B2201/7071 ,  H04W36/18

摘要： A receiver for spread spectrum communication system receives a traffic channel and common control channel by a plurality of matched filters at least one of which is selectively available for the traffic or the common control channel. At the initial acquisition, a plurality of matched filters are used for receiving the common control channel. At the hand-over, a plurality of matched filters are used to receive traffic channels of the current base station and the base stations in the adjacent cells.

摘要翻译： 扩频通信系统的接收机通过多个匹配的滤波器接收业务信道和公共控制信道，其中至少一个匹配滤波器可选择性地用于业务或公共控制信道。 在初始捕获时，使用多个匹配滤波器来接收公共控制信道。 在切换时，使用多个匹配滤波器来接收当前基站和相邻小区中的基站的业务信道。

公开(公告)号：EP0881780A2

公开(公告)日：1998-12-02

申请号：EP98103944.9

申请日：1998-03-05

申请人： NTT MOBILE COMMUNICATIONS NETWORK INC. ,  YOZAN INC.

发明人： Zhou, Changming ,  Shou, Guoliang ,  Suzuki, Kunihiko ,  Zhou, Xuping ,  Qin, Xiaoling ,  Chen, Jie ,  Sawahashi, Mamoru ,  Adachi, Fumiyuki

IPC分类号： H04B1/707

CPC分类号： H04B1/7113 ,  H04B1/7117 ,  H04B1/712 ,  H04B1/7183

摘要： A signal reception apparatus in the spectrum spread communication system requires only a small amount of circuitry and consumes a small amount of electric power. A quadrature detector decomposes received signals into in-phase components and quadrature components, and supplies them to a complex-type matched filter. The complex-type matched filter de-spreads the in-phase components and the quadrature components and sends them to a multi-path selector. The multi-path selector selects, from among the received de-spread signals, multiple paths having high levels of signal electric powers and sends the received signals of the selected paths to multiple phase correction blocks. Analog operation circuits 31 through 34 calculate phase errors of the received signals of two successive pilot symbol blocks for each path. An analog operation circuit 40 corrects the phases of the received signals of the information symbol block that has been received between the two successive pilot symbol blocks. A RAKE combiner synchronously combines the phase-corrected de-spread received signals of each path.

摘要翻译： 频谱扩展通信系统中的信号接收装置仅需要少量的电路并消耗少量的电力。 正交检测器将接收信号分解为同相分量和正交分量，并将其提供给复合型匹配滤波器。 复合型匹配滤波器对同相分量和正交分量进行解扩，并将其发送到多路径选择器。 多径选择器从接收的解扩信号中选择具有高电平信号电功率的多个路径，并将所选择的路径的接收信号发送到多个相位校正块。 模拟运算电路31至34计算每个路径的两个连续导频符号块的接收信号的相位误差。 模拟运算电路40校正已经在两个连续的导频符号块之间接收的信息符号块的接收信号的相位。 RAKE组合器同步地组合每个路径的相位校正的去扩展接收信号。