公开(公告)号：EP0838910A3

公开(公告)日：2003-03-19

申请号：EP97118371.0

申请日：1997-10-22

申请人： NTT DoCoMo, Inc. ,  Yozan, Inc.

发明人： Shou, Guoliang ,  Zhou, Changming ,  Zhou, Xuping ,  Yamamoto, Makoto ,  Takatori, Sunao ,  Sawahashi, Mamoru ,  Adachi, Fumiyuki

IPC分类号： H04B1/707 ,  H04Q7/38

CPC分类号： H04W48/18 ,  H04B1/70735 ,  H04B1/70775 ,  H04B1/708 ,  H04B1/7083 ,  H04B1/7093 ,  H04B1/7117 ,  H04B2201/70702 ,  H04W36/00

摘要： The present invention realizes a rapid and efficient cell search and small-size instrument for an asynchronous DS-CDMA cellular system. This cell search detects the correlation between the received signal and the short code of the control channel, and matched filter 22 detects the maximum electric power correlation peak location. Next, using correlators 28-1 to 28-n which are parallelly set in a plurality for RAKE processing with plurality, identifies the long code that is set in the system with the detected long code timing. After the long code is synchronized, a multipath signal is received using 28-1 to 28-n, and the data is judged by RAKE processing. When peripheral cell search is executed, after long code timing is detected by using matched filter 22, the long code of the candidate peripheral cell is designated using the same matched filter. Handover is safely realized by receiving the signal from the connected base station by correlators 28-1 to 28-n, and the base station signal through handover by 22.

公开(公告)号：EP0940916A3

公开(公告)日：2003-02-26

申请号：EP99104188.0

申请日：1999-03-02

申请人： Yozan Inc.

发明人： Zhou, Changming ,  Suzuki, Kunihiko ,  Tomatsu, Takashi

IPC分类号： H03H15/00

摘要： A filter circuit comprises a plurality of sampling and holding circuits for sampling and holding analog input signal with a predetermined sampling period, a calculation circuit for multiplying each the analog input signal by a predetermined multiplier, and for summing the multiplication results. The sampling and holding circuits are controlled in an electrical power such that the electrical power is decreased when holding.

公开(公告)号：EP0884856A3

公开(公告)日：2002-04-10

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.

公开(公告)号：EP0810741A3

公开(公告)日：2001-09-12

申请号：EP97108514.7

申请日：1997-05-27

申请人： YOZAN INC.

发明人： Shou, Gouliang ,  Zhou, Changming ,  Zhou, Xuping ,  Yamamoto, Makoto ,  Takatori, Sunao

IPC分类号： H04B1/707

CPC分类号： H04B1/708 ,  H04B1/7093 ,  H04B1/7115 ,  H04B2201/70709

摘要： This invention reduces electric power consumption of a CDMA communication system receiver in the wait mode. The received spread spectrum signal is demodulated in multiplication means 16 and 17 into baseband signals Ri and Rq, and input in complex matched filter 22. This filter is intermittently driven by supply voltage control means 20 to perform acquisition of received signals. When electric power calculation circuit 23 detects that outputs of this filter have a peak equal to or greater than a predetermined value, the received signals undergo acquisition by controlling n number of correlators 26-1 to 26-n to work by correlator controlling circuit 25; moreover, de-spreading is performed. Outputs from each correlator 26-1 to 26-n are given to RAKE combiner and demodulated by RAKE combining and demodulating circuit 28.

公开(公告)号：EP0853382A3

公开(公告)日：2000-05-10

申请号：EP97122446.4

申请日：1997-12-18

申请人： YOZAN INC.

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

IPC分类号： H03H17/00 ,  H04L25/03

CPC分类号： H03H17/00 ,  H04L25/03834

摘要： The present invention has the object to decrease the peak factor of a transmission signal and control impulse noise. The amplitude characteristics are identical to those of a normal root Nyquist filter, and the phase characteristics divide the passband into a plurality number, the root Nyquist filters having the phase corresponding to each bit value of PN codes with the length of the divided number are set on transmission and reception. Accordingly, even when the transmission signal has a high amplitude peak and a short connection time, the signal can be transmitted along the route by decreasing the peak to control the peak factor. Also, impulse noise can be restrained at reception.

公开(公告)号：EP0940916A2

公开(公告)日：1999-09-08

申请号：EP99104188.0

申请日：1999-03-02

申请人： Yozan Inc.

发明人： Zhou, Changming ,  Suzuki, Kunihiko ,  Tomatsu, Takashi

IPC分类号： H03H15/00

CPC分类号： H03H15/00

摘要： A filter circuit comprises a plurality of sampling and holding circuits for sampling and holding analog input signal with a predetermined sampling period, a calculation circuit for multiplying each the analog input signal by a predetermined multiplier, and for summing the multiplication results. The sampling and holding circuits are controlled in an electrical power such that the electrical power is decreased when holding.

摘要翻译： 滤波器电路包括多个采样和保持电路，用于以预定的采样周期对模拟输入信号进行采样和保持，计算电路，用于将每个模拟输入信号乘以预定的乘数，并且用于对乘法结果求和。 采样和保持电路受电力控制，使得在保持时电力减小。

公开(公告)号：EP0790712A3

公开(公告)日：1999-02-24

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： 解调器具有多个并联的匹配滤波器。 每个匹配滤波器具有不同的二进制PN码，多个样本保持器，多个乘法器，加法器和控制器。 样本保持器具有公共输入端，开关，第一电容器，具有输出端的第一反向放大器和通过开关和电容器连接到公共输入端的输入端，以及用于馈送第一反相输出端的第一反馈电容器 放大器返回到输入。 每个乘法器具有第一和第二子多路复用器，其中一个子多路复用器选择相应的样本保持器输出，另一个子多路复用器选择参考电压。

公开(公告)号：EP0883240A1

公开(公告)日：1998-12-09

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

摘要： An inverting amplifying circuit for outputting an inversion of an input with good linearity, having an inverter circuit, a feedback capacitance, an input capacitance, a first refresh switch, a second refresh switch and a sleep switch. A sleep voltage is input through the sleep switch to the inverter circuit for minimizing the electrical power consumption.

摘要翻译： 一种反相放大电路，用于输出具有良好线性度的输入的反相，具有反相器电路，反馈电容，输入电容，第一刷新开关，第二刷新开关和睡眠开关。 睡眠电压通过睡眠开关输入到逆变器电路以最小化电力消耗。

公开(公告)号：EP0852430A2

公开(公告)日：1998-07-08

申请号：EP98100081.3

申请日：1998-01-05

申请人： Yozan Inc.

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

IPC分类号： H04B1/707 ,  H04B7/26

CPC分类号： H04B1/7077 ,  H04B1/70735 ,  H04B1/70751 ,  H04B1/7083 ,  H04B2201/70702

摘要： Cells are searched at a high speed using an initial synchronization method and a receiver for a DS-CDMA inter base station asynchronous cellular system. A base band received signal is input to a matched filter 1 and is correlated with a spread code supplied from a spread code generator 2. A signal electric power calculator 3 calculates the electric power of the correlation output of the matched filter 1, and outputs the result to a long code synchronization timing determiner 4, a threshold value calculator 5, and a long code identifier 6. During the initial cell search, the spread code generator 2 outputs a short code #0 that is common to the control channel of each of the base stations. After the long code synchronization timing has been determined, each of the segments of the N chips which constitutes a portion of the synthesized spread code sequence synthesized from a long code #i that is unique to each of the base stations and the short code #0 is sequentially replaced and output.

摘要翻译： 使用初始同步方法和用于DS-CDMA基站间异步蜂窝系统的接收机以高速搜索小区。 基带接收信号被输入到匹配滤波器1，并与从扩展码发生器2提供的扩展码相关。信号电力计算器3计算匹配滤波器1的相关输出的电功率，并输出 导致长代码同步定时确定器4，阈值计算器5和长码标识符6.在初始小区搜索期间，扩展码发生器2输出与每个的控制信道共同的短码＃0 基站。 在确定了长代码同步定时之后，构成从每个基站唯一的长码#i合成的合成扩展码序列的一部分的N个码片的每个段和短码＃0 顺序更换并输出。

公开(公告)号：EP0838910A2

公开(公告)日：1998-04-29

申请号：EP97118371.0

申请日：1997-10-22

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

发明人： Shou, Guoliang ,  Zhou, Changming ,  Zhou, Xuping ,  Yamamoto, Makoto ,  Takatori, Sunao ,  Sawahashi, Mamoru ,  Adachi, Fumiyuki

IPC分类号： H04B1/707 ,  H04Q7/38

CPC分类号： H04W48/18 ,  H04B1/70735 ,  H04B1/70775 ,  H04B1/708 ,  H04B1/7083 ,  H04B1/7093 ,  H04B1/7117 ,  H04B2201/70702 ,  H04W36/00

摘要： The present invention realizes a rapid and efficient cell search and small-size instrument for an asynchronous DS-CDMA cellular system. This cell search detects the correlation between the received signal and the short code of the control channel, and matched filter 22 detects the maximum electric power correlation peak location. Next, using correlators 28-1 to 28-n which are parallelly set in a plurality for RAKE processing with plurality, identifies the long code that is set in the system with the detected long code timing. After the long code is synchronized, a multipath signal is received using 28-1 to 28-n, and the data is judged by RAKE processing. When peripheral cell search is executed, after long code timing is detected by using matched filter 22, the long code of the candidate peripheral cell is designated using the same matched filter. Handover is safely realized by receiving the signal from the connected base station by correlators 28-1 to 28-n, and the base station signal through handover by 22.

摘要翻译： 本发明实现了用于异步DS-CDMA蜂窝系统的快速且有效的小区搜索和小尺寸仪器。 该小区搜索检测接收信号与控制信道的短码之间的相关性，匹配滤波器22检测最大功率相关峰值位置。 接下来，使用多个并行设置为用于RAKE处理的多个的相关器28-1至28-n识别具有检测到的长码定时的系统中设置的长码。 在长代码同步之后，使用28-1至28-n接收多路径信号，并且通过RAKE处理来判断数据。 当执行外围小区搜索时，通过使用匹配滤波器22检测长代码定时之后，使用相同的匹配滤波器来指定候选周边小区的长码。 通过相关器28-1至28-n接收来自所连接的基站的信号，以及通过22切换的基站信号来安全地实现切换。