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：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。

公开(公告)号：EP0886385A2

公开(公告)日：1998-12-23

申请号：EP98111256.8

申请日：1998-06-18

申请人： Yozan Inc. ,  Ntt Mobile Communications Network 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 D i and D q of despread signal. D i and D q 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.

摘要翻译： 一种用于DS-CDMA通信系统的信号接收装置，其具有用于将接收信号解扩展成解扩信号的I分量和分量Di和Dq的复匹配滤波器。 Di和Dq被输入到路径选择部分13，用于提取去扩展信号的导频符号块中的相位误差。 根据部分13中的相位误差来计算相位补偿信号。根据相位补偿信号补偿信息符号。 从用于选择要接收的路径的几个时隙的相位补偿信号的平均值计算电功率。 所选择的路径与由rake组合器14相位同步的组合。

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。

公开(公告)号：EP0930723A3

公开(公告)日：2003-07-30

申请号：EP99100692.5

申请日：1999-01-14

申请人： Yozan Inc.

发明人： Zhou, Changming ,  Zhou, Xuping

IPC分类号： H04B1/707

CPC分类号： H04B1/70752 ,  H04B1/70735 ,  H04B1/70751 ,  H04B1/7077

摘要： A (direct-sequence code division multiple access) DS-CDMA cellular system includes a plurality of cells each having one base station and a plurality of mobile stations. A signal transmitted form the base station is distinguished by a long code which is different from the others being uniquely allocated to each cell. A long code synchronization timing being detected by a correlation using a common short code. The long codes are searched in each mobile station by a partial correlation in a timing according to the long code synchronization timing. The partial correlation is a correlation between a signal received and a segment of a code defined by a part of the long code, the part being shifted in the long code. Further, the long codes are classified into a plurality of long code groups defined by long code group identification codes. A delay profile of the long code group identification code is detected and is compensated in fading according to said short code. Then, the long code group identification code is combined by rake combining, and is demodulated.

公开(公告)号：EP0932262A3

公开(公告)日：2003-05-14

申请号：EP98124528.5

申请日：1998-12-22

申请人： Yozan Inc. ,  NTT DoCoMo, Inc.

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

IPC分类号： H04B1/707 ,  H03H17/02

CPC分类号： H04B1/707

摘要： A plurality of sets of spreading code sequences are stored in registers. In case of soft hand-over, multi-code and long-delay paths, it is possible that the correlation peaks derived by the different PN sequences overlap. The spreading code sequences then are shifted by the generator registers in order to separate the peaks by one or more chips.

公开(公告)号：EP0757450A3

公开(公告)日：2000-06-21

申请号：EP96112313.0

申请日：1996-07-30

申请人： YOZAN INC. ,  SHARP KABUSHIKI KAISHA

发明人： Zhou, Changming ,  Shou, Guoliang ,  Yamamoto, Makoto ,  Takatori, Sunao

IPC分类号： H04B1/707

CPC分类号： H04B1/708 ,  H04B1/7085 ,  H04B1/7093 ,  H04B1/7095 ,  H04B2201/70709

摘要： The present invention has an object to provide a filter circuit largely reducing electric power to consume compared with a conventional one, as well as realizing the first acquisition in enough high speed. In a filter circuit according to the present invention, a matched filter and a sliding correlator are used in parallel, the first acquisition and holding is executed by a matched filter, a correlating operation is executed by a sliding correlator and a voltage is stopped to supply to the matched filter.

摘要翻译： 本发明的目的是提供一种与传统电路相比大大降低电力消耗的滤波器电路，以及以足够高的速度实现第一次采集。 在根据本发明的滤波器电路中，并行使用匹配滤波器和滑动相关器，第一采集和保持由匹配滤波器执行，相关操作由滑动相关器执行，并且停止电压以供应 到匹配的过滤器。

公开(公告)号：EP0939500A2

公开(公告)日：1999-09-01

申请号：EP99103383.8

申请日：1999-02-22

申请人： Yozan Inc.

发明人： Zhou, Changming

IPC分类号： H04B1/707

CPC分类号： H04B1/7093 ,  H03H17/0254 ,  H04B1/708 ,  H04B2201/7071

摘要： An analog input signal is converted into digital data by an A/D converted, a digital multiplication as a correlation calculation is executed by a plurality of exclusive-OR circuits, and an analog addition of outputs of the exclusive-OR circuits is performed. In the multiplication, the digital data is multiplied a spreading code of one bit. The exclusive-OR outputs are added for each weight of bits, and the addition results are weighted and summed up.

摘要翻译： 通过A / D转换将模拟输入信号转换为数字数据，由多个异或电路执行相关计算的数字乘法，并执行异或电路的输出的模拟相加。 在乘法中，数字数据被乘以一位的扩展码。 对每个比特的权重添加异或输出，并对加法结果进行加权和归纳。

公开(公告)号：EP0868061A2

公开(公告)日：1998-09-30

申请号：EP98102521.6

申请日：1998-02-13

申请人： Yozan Inc.

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

IPC分类号： H04L27/233

CPC分类号： H04L27/2331

摘要： A π/n shift PSK demodulator of this invention is formed with a digital logical means through the following method. XOR4 calculates the ex-OR operation between the present sample through π/4 shift QPSK output from SH2 and the previous one output from SH1. Accumulating 1 among the outputs from XOR4 in the first operation means 5 and multiplying it by π/8 obtains the absolute phase difference between the present and the previous symbols. The former or latter four bits from SH1 are subtracted from the corresponding former or latter four bits from SH2, and the result of each bit is summed and its sign is added to the absolute phase data in sign addition means 10. After the phase offset is subtracted from the outputs from 10, it is demodulated into the original one in judgment circuit 13.

摘要翻译： 本发明的π/ n移位PSK解调器通过以下方法由数字逻辑装置形成。 XOR4通过从SH2输出的pi / 4移位QPSK和SH1的前一个输出计算当前样本之间的异或运算。 在第一操作装置5中从XOR4的输出中累积1，并将其乘以pi / 8获得当前和先前符号之间的绝对相位差。 来自SH1的前者或后面的四位从SH2的相应的前一个或后四位中减去，每个位的结果被相加，并且其符号被加到符号加法装置10中的绝对相位数据。在相位偏移为 从10的输出中减去，在判断电路13中解调为原来的。

公开(公告)号：EP0853388A2

公开(公告)日：1998-07-15

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 ,  H04B7/005

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.

摘要翻译： 通过最小的电路以高精度校正扩频信号的相位。 接收机的相位校正电路31-34中的一个对应于每个路径。 解扩输出的I分量和Q分量被提供给相位校正电路31-34。相位误差提取器1从接收的导频块中提取第一相位误差。 相位校正器2使用已经基于第一相位误差计算的校正矢量来校正接收信息符号的相位误差。 RAKE合成器25将校正的接收信号与其他路径的相位校正电路的输出合成，并将该合成信号输出到暂时确定要处理的信息符号的临时确定器3。 使用临时确定结果在校正矢量修改器4中修改相位误差。 基于修正的相位误差计算新的校正矢量。 以这种方式，基于信息符号的临时确定结果，顺序修改校正矢量。