公开(公告)号：EP2073395A3

公开(公告)日：2011-05-11

申请号：EP08165585.4

申请日：2001-11-20

申请人： QUALCOMM Incorporated

发明人： Easton, Kenneth D. ,  Black, Peter, J. c/o QUALCOMM Incorporated

IPC分类号： H04B1/707

CPC分类号： H04B1/707 ,  H04B1/709 ,  H04B2001/70935

摘要： A receiver unit includes a first buffer that receives and stores digitized samples at a particular sample rate and a data processor that retrieves segments of digitized samples from the first buffer and processes the retrieved segments with a particular set of parameters values. The data processor is operated based on a processing clock having a frequency that is (e.g., then or more times) higher than the sample rate. Multiple instances of the received signal can be processed by retrieving and processing multiple segments of digitized samples from the first buffer. the receiver unit typically further includes a receiver that receives and processes a transmitted signal to provide the digitized samples and a controller that dispatches tasks for the data processor. The data processor can be designed to include a correlator, a symbol demodulation and combiner, a first accumulator, and a second buffer, or a combination thereof. The correlator despreads the retrieved segments of digitized samples with corresponding segments of PN despreading sequences to provide correlated samples, which are further processed by the symbol demodulation and combiner to provide processed symbols. The second buffer stores the processed symbols, and can be designed to provide de-interleaving of the processed symbols.

公开(公告)号：EP2285008A2

公开(公告)日：2011-02-16

申请号：EP10182473.8

申请日：2001-11-20

申请人： Qualcomm Incorporated

发明人： Easton, Kenneth D. ,  Black, Peter J.

IPC分类号： H04B1/707

CPC分类号： H04B1/707 ,  H04B1/709 ,  H04B2001/70935

摘要： A receiver unit includes a first buffer that receives and stores digitized samples at a particular sample rate and a data processor that retrieves segments of digitized samples from the first buffer and processes the retrieved segments with a particular set of parameters values. The data processor is operated based on a processing clock having a frequency that is (e.g., then or more times) higher than the sample rate. Multiple instances of the received signal can be processed by retrieving and processing multiple segments of digitized samples from the first buffer, the receiver unit typically further includes a receiver that receives and processes a transmitted signal to provide the digitized samples and a controller that dispatches tasks for the data processor. The data processor can be designed to include a correlator, a symbol demodulation and combiner, a first accumulator, and a second buffer, or a combination thereof. The correlator despreads the retrieved segments of digitized samples with corresponding segments of PN despreading sequences to provide correlated samples, which are further processed by the symbol demodulation and combiner to provide processed symbols. The second buffer stores the processed symbols, and can be designed to provide de-interleaving of the processed symbols.

摘要翻译： 接收器单元包括以特定采样率接收和存储数字化样本的第一缓冲器，以及从第一缓冲器检索数字化样本的段并且使用特定参数值集处理检索到的段的数据处理器。 数据处理器基于具有比采样率高的（例如，或多次）的频率的处理时钟来操作。 接收信号的多个实例可以通过从第一缓冲器检索和处理数字化采样的多个段来处理，接收机单元通常还包括接收和处理发射信号以提供数字化采样的接收机，以及控制器，其为 数据处理器。 数据处理器可以被设计为包括相关器，符号解调和组合器，第一累加器和第二缓冲器，或其组合。 相关器将所取回的数字化样本片段用相应的PN解扩序列片段解扩，以提供相关样本，由符号解调和组合器进一步处理以提供处理后的符号。 第二缓冲器存储经处理的符号，并且可以被设计为提供经处理符号的去交织。

公开(公告)号：EP1416352B1

公开(公告)日：2008-07-23

申请号：EP03023971.9

申请日：2003-10-22

申请人： Broadcom Corporation

发明人： Lee, Yung-Hsiang

IPC分类号： G06E1/04 ,  G06F17/16 ,  H04B1/707

CPC分类号： H04B1/7093 ,  G06F17/16 ,  H04B2001/70935

公开(公告)号：EP1634382B1

公开(公告)日：2007-05-16

申请号：EP03817321.7

申请日：2003-06-18

申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)

发明人： SCHOTTEN, Hans, Dieter

IPC分类号： H04B1/707

CPC分类号： H04B1/7093 ,  H04B2001/70935 ,  H04B2201/70703

摘要： A method and a component for despreading a multi-code signal that has been generated using two or more spreading codes with different spreading factors are described. The method comprises subjecting the signal to a first despreading step (40) that includes a first Fast Hadamard Transform (FHT) to jointly despread the spreading codes. During the first despreading step one or more spreading codes are despread only partially. The signal or signal portion including one or more partially despread spreading codes are then subjected to one or more further despreading steps (42).

公开(公告)号：EP1177648A4

公开(公告)日：2005-06-22

申请号：EP00929933

申请日：2000-05-15

申请人： SAMSUNG ELECTRONICS CO LTD

发明人： PARK JIN-SOO ,  CHOI HO-KYU ,  KIM JAE-YOEL ,  KANG HEE-WON

IPC分类号： H04B1/707 ,  H04B1/7073 ,  H04B7/26 ,  H04J3/06 ,  H04J13/00 ,  H04L7/00 ,  H04L7/08

CPC分类号： H04J13/0025 ,  H04B1/7083 ,  H04B2001/70935 ,  H04B2201/70701 ,  H04J3/0605

摘要： There is provided an apparatus and method for generating a frame sync word and verifying the frame sync word in an asynchronous CDMA communication system. In the apparatus for generating a sync word for synchronization of frames each having a predetermined number of slots, each of at least two m-sequence generators generates the predetermined number of sequential elements, and a selector multiplexes the sequential elements received from the m-sequence generators and assigns the multiplexed elements in the slots.

公开(公告)号：EP1523109A3

公开(公告)日：2005-05-18

申请号：EP04106417.1

申请日：2001-02-02

申请人： INTERDIGITAL TECHNOLOGY CORPORATION

发明人： Ziera, Ariela ,  Zeira, Eldad ,  Reznik, Alexander ,  Terry, Stephen E.

IPC分类号： H04B1/707

CPC分类号： H04B1/7103 ,  H04B1/707 ,  H04B1/70735 ,  H04B1/7105 ,  H04B2001/70935 ,  H04B2201/70701 ,  H04B2201/70709 ,  H04J13/00 ,  H04J13/16

摘要： A wireless time division duplex communication system using code division multiple access has a base station and user equipments. The system communicates using communication bursts (16). Each communication burst has a unique channelization code and a midamble code (20). Each midamble code is mapped to a set of at least one channelization code. For each communication burst to be transmitted in a time slot from the base station, the midamble code mapped to that burst's channelization code is determined. Communication bursts are generated and transmitted in the time slot. Each burst has the determined midamble code for its channelization code. The user equipment receives the bursts and determines each received midamble code. The user equipment determines the channelization codes of the transmitted communication bursts based on in part a result of the determining of each received midamble code.

公开(公告)号：EP1523109A2

公开(公告)日：2005-04-13

申请号：EP04106417.1

申请日：2001-02-02

申请人： INTERDIGITAL TECHNOLOGY CORPORATION

发明人： Ziera, Ariela ,  Zeira, Eldad ,  Reznik, Alexander ,  Terry, Stephen E.

IPC分类号： H04B1/707

CPC分类号： H04B1/7103 ,  H04B1/707 ,  H04B1/70735 ,  H04B1/7105 ,  H04B2001/70935 ,  H04B2201/70701 ,  H04B2201/70709 ,  H04J13/00 ,  H04J13/16

摘要： A wireless time division duplex communication system using code division multiple access has a base station and user equipments. The system communicates using communication bursts (16). Each communication burst has a unique channelization code and a midamble code (20). Each midamble code is mapped to a set of at least one channelization code. For each communication burst to be transmitted in a time slot from the base station, the midamble code mapped to that burst's channelization code is determined. Communication bursts are generated and transmitted in the time slot. Each burst has the determined midamble code for its channelization code. The user equipment receives the bursts and determines each received midamble code. The user equipment determines the channelization codes of the transmitted communication bursts based on in part a result of the determining of each received midamble code.

摘要翻译： 使用码分多址的无线时分双工通信系统具有基站和用户设备。 系统使用通信突发（16）进行通信。 每个通信突发具有唯一的信道化码和中间码（20）。 每个中置码被映射到一组至少一个信道化码。 对于要在来自基站的时隙中发送的每个通信突发，确定映射到该突发的信道化码的中间码（midamble）码。 通信突发在时隙中生成并传输。 每个突发具有用于其信道化码的确定的中置码。 用户设备接收突发并确定每个接收的中间码。 用户设备部分地基于确定每个接收到的中置码的结果来确定所发送的通信突发的信道化码。

公开(公告)号：EP1220465A1

公开(公告)日：2002-07-03

申请号：EP01440401.6

申请日：2001-11-28

申请人： ALCATEL

发明人： Warich, Anja ,  Mortensen, Ivar, Dr.

IPC分类号： H04B1/707

CPC分类号： H04B1/7093 ,  H04B2001/70935 ,  H04W74/0866

摘要： Es wird ein Detektor (14) für eine Basisstation (12) eines funkbetriebenen Telekommunikationssystems (10) beschrieben. Bei dem Telekommunikationssystem (10) kann von einem Mobilteil (11) ein Signal (13) erzeugt und ausgesendet werden, das als Anmeldewunsch des Mobilteils (11) bei der Basisstation (12) vorgesehen ist. Weiterhin kann bei dem Telekommunikationssystem (10) das Signal (13) von der Basisstation (12) empfangen und der Anmeldewunsch erkannt werden. Das von der Basisstation (12) empfangene Signal (13) beruht dabei auf einer Hadamard-Transformation. Weiterhin ist der Detektor (14) zur Anwendung der Hadamard-Transformation geeignet.

摘要翻译： 本发明公开了一种用于无线电操作电信系统（10）的基站（12）的检测器（14）。 在电信系统（10）可以是移动部分（11）产生的信号（13）和出射，即作为在基站（12）所述移动部分（11）的登记请求提供。 此外，它可以接收来自在该电信系统（10）和所述登记请求的基站（12）的信号（13）进行检测。 从基站发送（12）接收信号（13）是基于Hadamard变换。 此外，为了Hadamard变换应用的检测器（14）是合适的。

公开(公告)号：EP1040594A1

公开(公告)日：2000-10-04

申请号：EP98962965.4

申请日：1998-12-08

申请人： QUALCOMM Incorporated

发明人： LEVIN, Jeffrey, A.

IPC分类号： H04B1/707

CPC分类号： H04B1/70752 ,  H04B1/70735 ,  H04B1/70753 ,  H04B1/70756 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/7113 ,  H04B2001/70935

摘要： A system and method for performing the digital receive processing for multiple signals received over the same RF band is described. In a preferred embodiment of the invention, digital RF samples are stored in a queue which is accessed by a searcher (130) and demodulator (112). The searcher (130) and demodulator (112) are preferably located on the same integrated circuit along with the queue. The demodulator (112) demodulates a set of reverse link signals stored within the queue where each reverse link signal is received with at a particular time offset and processed using a particular channel code. The searcher (130) periodically searches for reverse link signals not being processed by the demodulator (112), and for access requests transmitted via the access channel. The searcher (130) preferably searches during the worthy power control groups of each reverse link signal, which corresponds to the two of sixteen power control groups transmitted during an eighth rate frame.

公开(公告)号：EP0883936A1

公开(公告)日：1998-12-16

申请号：EP97916810.0

申请日：1997-03-24

申请人： STANFORD TELECOMMUNICATIONS, INC

发明人： NATALI, Francis ,  OHLSON, John

IPC分类号： H04B1 ,  H04B7

CPC分类号： H04B1/7077 ,  H04B7/216 ,  H04B2001/70935

摘要： A spread spectrum CDMA communication system in which a station transmits a short synchronization signal to allow a second station to (1) recognize that a signal is present, (2) resolve frequency uncertainty, (3) acquire the spreading code timing, (4) acquire frame and symbol synchronization, and (5) demodulate data which may contain user identification and other data. The rapid acquisition channel (RAC) includes a burst signal comprising of an Acquisition Field during which the carrier is biphase modulated with a pseudo-noise (PN) sequence, a Sync Field during which a synchronization sequence is mod-2 added to the PN sequence with one chip of the sync sequence equal to one or more periods of the PN sequence, and a data field with m-ary orthogonal code words mod-2 added to the PN sequence with one chip of the code word equal to one or more periods of the PN sequence.