公开(公告)号：EP1233536B1

公开(公告)日：2007-12-12

申请号：EP01970238.0

申请日：2001-09-27

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD

发明人： NISHIO, Akihiko ,  FUJII, Hideo ,  HAYASHI, Masaki

IPC分类号： H04B1/707 ,  H04J13/04

CPC分类号： H04B1/7105 ,  H04B2201/70707

摘要： The spread codes multiplexed in the received signal are counted. If the number of spread codes is under a predetermined threshold, switches (4, 5) are operated to be connected to a RAKE demodulation section (2); and if the number is a predetermined threshold or more, they are operated to be connected to a joint detection demodulation section (3). Thus, only when the number of multiplexed spread codes is large, namely, only when the number of users is large, the joint detection demodulation requiring a large power consumption is performed, and thereby power for demodulation is saved.

公开(公告)号：EP1825626A1

公开(公告)日：2007-08-29

申请号：EP04822583.3

申请日：2004-12-17

申请人： EUROPEAN SPACE AGENCY

发明人： WINKEL, Jon, Olafur

IPC分类号： H04J13/04 ,  H04B1/707

CPC分类号： H04J13/102 ,  H04B1/707 ,  H04B2201/70715 ,  H04J13/16

摘要： One embodiment of the present invention provides a method of creating a set of spreading codes for use in a satellite navigation system comprising a constellation of satellites. Each satellite in the constellation is to be allocated a spreading code from the set of spreading codes. The method comprises generating an initial set of bit patterns (105), where each bit pattern represents a potential spreading code, and performing an optimization process on the initial set of bit patterns (110). The optimization process modifies at least some of the bit patterns in the initial set to create a final set of bit patterns for use as the set of spreading codes (115) for the satellite navigation system. Receivers that support the satellite navigation system incorporate the final set of bit patterns for use in signal acquisition and position determination.

公开(公告)号：EP1819084A1

公开(公告)日：2007-08-15

申请号：EP05811696.3

申请日：2005-11-29

申请人： Suehiro, Naoki

发明人： Suehiro, Naoki

IPC分类号： H04J13/04 ,  H04J1/00

CPC分类号： H04J13/10 ,  H04L23/02

摘要： A wireless communication system includes plural wireless communication apparatuses. Each wireless communication apparatus includes a transmitter 10 including a spread unit 14 for spreading a transmission sequence to be transmitted with a predetermined spread sequence, a pseudo periodic sequence generating unit 13 for generating a periodic sequence in which the transmission sequence to be transmitted is repeated a predetermined number of times, and a modulating unit 15 for modulating, with a carrier frequency, the transmission sequence to be transmitted. Each wireless communication apparatus includes a receiver 20 including a demodulating unit 22 configured to demodulate a reception wave modulated with the carrier frequency and a despreading unit 27 for despreading the spread signal sequence. The transmission sequence to be transmitted includes a pilot signal used for measuring multipath properties and a transmission data signal.

摘要翻译： 无线通信系统包括多个无线通信装置。 每个无线通信装置包括：发射机10，包括扩展单元14，用于扩展要用预定扩展序列发送的发送序列;伪周期序列生成单元13，用于生成其中要发送的发送序列重复的周期性序列 以及调制单元15，用于以载波频率调制要发送的发送序列。 每个无线通信装置包括：接收机20，包括：解调单元22，被配置为解调用载波频率调制的接收波;解扩单元27，用于解扩展扩展信号序列。 要发送的发送序列包括用于测量多径性质的导频信号和发送数据信号。

公开(公告)号：EP1542384A4

公开(公告)日：2007-06-20

申请号：EP02765360

申请日：2002-08-28

申请人： FUJITSU LTD

发明人： FUJII MASAAKI

IPC分类号： H04B1/707 ,  H04B1/7083 ,  H04B1/7087 ,  H04J11/00 ,  H04K1/10 ,  H04L5/02 ,  H04L27/26 ,  H04J13/04

CPC分类号： H04L5/0048 ,  H04B1/7083 ,  H04L5/0007 ,  H04L5/0021 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/023 ,  H04L25/03866 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/266 ,  H04L27/2662

摘要： In a transmitting method for transmitting a transmit signal sequence by a number of subcarriers, a plurality of subcarriers F1, F2, ... FNSCH exclusively for a synchronization channel are provided, a signal sequence of synchronization channel SCH is transmitted by the plurality of exclusive subcarriers, and a common pilot CPICH or dedicated signal DPCH is transmitted on the other subcarriers. In this case, the signal sequence of the synchronization channel is subjected to differential encoding processing and the differentially encoded signal sequence is transmitted by the exclusive subcarriers.

公开(公告)号：EP1271824B1

公开(公告)日：2007-01-24

申请号：EP00911380.4

申请日：2000-03-27

申请人： FUJITSU LIMITED

发明人： NAKAMURA, Tadashi, c/o Fujitsu Limited

IPC分类号： H04B1/707 ,  H04J13/04 ,  H04Q7/38

CPC分类号： H04B1/7103 ,  H04B1/707 ,  H04B2201/70701 ,  H04J13/0077

摘要： A plurality of receiving units (26) forming a multiuser receiver are each provided with a selector (2) which selects for use either a propagation path estimated value determined by a propagation path estimator (18) contained in the same receiving unit or a propagation path estimated value determined by a propagation path estimator contained in another receiving unit. When the despreading code used in a first despreader (10) is a pilot signal despreading code, the selector (20) selects the propagation path estimated value determined by the propagation path estimator (18) based on the despread pilot signal output from the first despreader (10), and supplies the selected propagation path estimated value to a coherent detector (24), while when a user channel despreading code is used in the first despreader (10), the selector (20) selects the propagation path estimated value determined in another receiving unit and supplies it to the coherent detector (22, 24).

公开(公告)号：EP1722499A1

公开(公告)日：2006-11-15

申请号：EP05720046.1

申请日：2005-03-04

申请人： NTT DoCoMo INC. ,  NEC CORPORATION

发明人： KAWAMOTO, Junichiro, NTT DoCoMo, Inc., I.P. Dept. ,  MAEDA, Noriyuki, NTT DoCoMo, Inc., I.P. Dept. ,  HIGUCHI, Kenichi, NTT DoCoMo, Inc., I.P. Dept. ,  SAWAHASHI, Mamoru, NTT DoCoMo, Inc., I.P. Dept. ,  YOSHIDA, Shousei, NEC Corporation ,  KIMATA, Masayuki, NEC Corporation

IPC分类号： H04J15/00 ,  H04B1/10 ,  H04B7/26 ,  H04J13/04

CPC分类号： H04B7/0854 ,  H04B1/7105 ,  H04B1/7107 ,  H04L1/0656 ,  H04L25/0228 ,  H04L2025/03426

摘要： A receiving apparatus, a receiving method, and a radio communications system are disclosed. The receiving apparatus is for receiving CDMA signals transmitted by M antennas and received by N antennas, where M and N are positive integers. The receiving apparatus includes a multipath receiving signal demodulating unit for primary demodulation of the CDMA signals received by the receiving antennas to obtain estimated transmission signals, and for' obtaining signals in a multipath environment of each path of the receiving antennas based on the estimated results. Further, the receiving apparatus includes a multipath interference canceling unit for deducting signals of the paths other than a target path from the signals received by the receiving antennas to obtain multipath interference cancelled signals. Further, the receiving apparatus includes a demodulator for secondary demodulation of the multipath interference cancelled signals.

摘要翻译： 公开了接收装置，接收方法和无线电通信系统。 接收装置用于接收由M个天线发射并由N个天线接收的CDMA信号，其中M和N是正整数。 接收装置包括：多径接收信号解调单元，用于对由接收天线接收的CDMA信号进行一次解调以获得估计的传输信号，并且用于根据估计的结果在接收天线的每条路径的多径环境中获得信号。 此外，接收装置包括：多径干扰消除单元，用于从由接收天线接收的信号中扣除目标路径以外的路径的信号，以获得多路径干扰消除信号。 此外，接收装置包括用于二次解调多路径干扰消除信号的解调器。

公开(公告)号：EP1618689B1

公开(公告)日：2006-11-08

申请号：EP04729116.6

申请日：2004-04-23

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： FARKAS, Peter ,  TURCS NY, Matús

IPC分类号： H04J11/00 ,  H04J13/04 ,  H04L5/02

CPC分类号： H04J13/10 ,  H04L1/0618 ,  H04L5/026 ,  H04L23/02

摘要： The invention relates to a method for transmitting data bits between at least one subscriber station and a radio access arrangement in a radio communication system. Each data bit is transmitted to at least two different units of a first radio resource (frequency band 1). On the emitter side, the data bits are spread for each unit of the first radio resource (frequency band 1) in such a way that each data bit is multiplied by a code matrix of the same matrix code group for the first radio resource (frequency band 1) units whose lines display respectively a spreading code realigning to a second radio resource (time t) and the columns display respectively a spreading code relating to a third radio resource (frequency f).

摘要翻译： 本发明涉及一种用于在无线电通信系统中的至少一个用户站与无线电接入装置之间传送数据比特的方法。 每个数据比特被发送到第一无线电资源（频带1）的至少两个不同单元。 在发射机侧，数据比特为第一无线电资源（频带1）的每个单元以这样的方式扩展：每个数据比特乘以第一无线电资源的相同矩阵码组的码矩阵（频率 频带1）单元，其线路分别显示重新对齐到第二无线电资源（时间t）的扩展码，并且这些列分别显示与第三无线电资源（频率f）有关的扩展码。

公开(公告)号：EP1142102A4

公开(公告)日：2006-10-04

申请号：EP00976598

申请日：2000-11-09

申请人： ITT MFG ENTERPRISES INC

发明人： BIERLY SCOTT ,  HARLACHER MARC ,  WEINBERG AARON

IPC分类号： H03D1/00 ,  H04J13/04 ,  G01S1/00 ,  H03H17/02 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/708 ,  H04B1/7093 ,  H04L27/06

CPC分类号： H04B1/708 ,  G01S19/29 ,  G01S19/30 ,  H03H17/0254 ,  H04B1/70757 ,  H04B1/7093 ,  H04B2001/70706 ,  H04B2201/70707 ,  H04B2201/70715

摘要： A parallel digital matched filter is constructed which performs numerous simultaneous correlations of a received spread spectrum signal against various replica offsets of its spreading sequence. This allows for the rapid acquisition (12) of the received signal code phase, and subsequent handoff to tracking (14) for a multi-channel receiver. A novel matched filter computational architecture is utilized, in which common digital arithmetic elements are used for both acquisition and tracking purposes. As each channel is sequentially acquired by the parallel matched filter, a subset of the arithmetic elements are then dedicated to the subsequent tracking of that channel. This process is repeated, with the remaining available arithmetic elements accelerating the acquisition of the next channel, and so on, until all resources are allocated as tracking channels. Additionally, multiple data inputs and delay lines (10) are present in this architecture, and are available for processing at each arithmetic element. In this way, multiple signal bands and user channels may be integrated within a common receiver framework.

公开(公告)号：EP1300974B1

公开(公告)日：2006-09-13

申请号：EP01936913.1

申请日：2001-06-08

申请人： ADVANTEST CORPORATION

发明人： KOIZUMI, Satoshi, c/o ADVANTEST Corporation ,  NAKADA, Juichi, c/o ADVANTEST Corporation ,  NISHINO, Eiji, c/o ADVANTEST Corporation ,  ICHIKAWA, Hideki, c/o ADVANTEST Corporation

IPC分类号： H04J13/04 ,  H04B1/707

CPC分类号： H04J13/0048 ,  H04B1/707 ,  H04B17/23 ,  H04B17/309 ,  H04L1/24

摘要： A multiplexed signal quality display comprises storage means where the results of measurement of the power of a signal present in each of all the channels in the use band are stored, display means for reading and displaying the measurement values of a previously designated channel for which presence of a signal is predicted. Therefore, the desired quality of the waveform of the channel determined by the Walsh code and Walsh length can be displayed.

公开(公告)号：EP1513265A3

公开(公告)日：2006-07-05

申请号：EP04027644.6

申请日：1997-03-21

申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

发明人： Sunaga, Terumi, Mitsubishi Denki Kabushiki Kaisha

IPC分类号： H04B1/707 ,  H04B7/26 ,  H04J13/04

CPC分类号： H04B1/707 ,  H04B7/2637 ,  H04B2201/70701

摘要： A receiver for use in a CDMA mobile communication system comprising:
a pilot channel receive unit (44) which is configured to demodulate pilot signals transmitted in a spread spectrum formation by a transmitter; and
a traffic channel receive unit (45) which is configured to demodulate data transmitted in a spread spectrum formation by said transmitter, where the pilot signals have been transmitted intermittently.

摘要翻译： 一种用于CDMA移动通信系统的接收机，包括：导频信道接收单元（44），用于解调发射机以扩频形式发送的导频信号; 以及业务信道接收单元（45），其被配置为对所述发射机以扩频形式发送的数据进行解调，其中所述导频信号已被间歇地发送。