公开(公告)号：US20040004995A1

公开(公告)日：2004-01-08

申请号：US10613897

申请日：2003-07-02

Applicant: CommASIC, Inc.

Inventor： Robert W. Boesel ,  Theodore J. Myers ,  Tien Q. Nguyen

IPC: H04B001/707 ,  H04B001/69

CPC classification number: H04B1/712 ,  H04B1/7117 ,  H04B2201/70701 ,  H04B2201/70707 ,  H04B2201/7071

Abstract: A buffering apparatus to process digital communication signals includes a plurality of buffers, a processing unit, and programmed memory. The programmed memory has instructions directing the processing unit to process the digital samples corresponding to a group of symbols to be processed in a plurality of buffers. The digital samples start in a first buffer of the plurality of buffers and end in a second buffer of the plurality of buffers. The digital samples are received at a third buffer of the plurality of buffers during the processing of the digital samples.

Abstract translation: 处理数字通信信号的缓冲装置包括多个缓冲器，处理单元和编程存储器。 编程存储器具有指示处理单元处理与要在多个缓冲器中处理的一组符号相对应的数字样本的指令。 数字样本在多个缓冲器的第一缓冲器中开始并在多个缓冲器的第二缓冲器中结束。 数字样本在数字样本的处理期间在多个缓冲器的第三缓冲器处被接收。

公开(公告)号：US06625205B1

公开(公告)日：2003-09-23

申请号：US09332198

申请日：1999-06-14

Applicant: Changming Zhou ,  Kunihiko Suzuki

Inventor： Changming Zhou ,  Kunihiko Suzuki

IPC: H04L2706

CPC classification number: H04B1/7093 ,  H04B1/708 ,  H04B2201/7071

Abstract: A matched filter having a set of registers to successively store a digital voltage. The matched filter includes a cumulative shift register, a number of exclusive-or circuits, and an analog adder. The cumulative shift register has a number of stages in which each stage has one bit corresponding to the shift register. The exclusive-or circuits each perform an exclusive-or function on each bit of the digital data and the one bit coefficient while the analog adder sums outputs from the exclusive-or circuits.

Abstract translation: 具有一组寄存器以连续存储数字电压的匹配滤波器。 匹配滤波器包括累积移位寄存器，多个异或电路和模拟加法器。 累积移位寄存器具有多个阶段，其中每个级具有对应于移位寄存器的一位。 在模拟加法器对来自异或电路的输出进行求和时，异或电路各自对数字数据的每一位和一位系数进行排他或功能。

公开(公告)号：US06597727B2

公开(公告)日：2003-07-22

申请号：US09972060

申请日：2001-10-05

Applicant: Lieven Philips ,  Jan Vanhoof ,  Maryse Wouters ,  Rik De Wulf ,  Veerle Derudder ,  Carl Van Himbeeck ,  Ivo Bolsens ,  Hugo De Man ,  Bert Gyselinckx

Inventor： Lieven Philips ,  Jan Vanhoof ,  Maryse Wouters ,  Rik De Wulf ,  Veerle Derudder ,  Carl Van Himbeeck ,  Ivo Bolsens ,  Hugo De Man ,  Bert Gyselinckx

IPC: H04B169

CPC classification number: G06F8/10 ,  G06F17/5022 ,  G06F17/5045 ,  H04B1/707 ,  H04B2201/7071

Abstract: The programmable modem for digital data of the present invention provides a highly programmable, digital modem implemented in an integrated circuit which can be customized to specific applications. The programmable modem uses spread spectrum techniques and is specifically programmable to alter the parameters of the modem to improve performance. The present invention also provides a systematic method and development kit to provide rapid customization of a modem for a particular application or for rapid specification of a high-performance application specific integrated circuit mode.

公开(公告)号：US20030103556A1

公开(公告)日：2003-06-05

申请号：US09991514

申请日：2001-11-16

Applicant: SAMSUNG ELECTRONICS CO. LTD.

Inventor： Sung-Chul Han

IPC: H04K001/00

CPC classification number: H04B1/7115 ,  H04B1/7117 ,  H04B2201/7071

Abstract: A rake receiver for high data rate communications systems is provided that is able to share resources between demodulating branches without using independent hardware resources for each finger. The rake receiver of the present invention uses less circuitry while keeping functional equivalence, and it requires relatively smaller additional area when increasing the number of demodulating branches, thereby having a significantly smaller size, being able to track more demodulating paths for increasing performance, and being less complex as compared to conventional rake receivers for high data rate communications systems.

Abstract translation: 提供了一种用于高数据速率通信系统的耙式接收机，其能够在解调分支之间共享资源，而不需要为每个手指使用独立的硬件资源。 本发明的耙式接收机在保持功能等同性的同时使用更少的电路，并且当增加解调分支的数量时需要相对较小的附加面积，从而具有明显更小的尺寸，能够跟踪更多的解调路径以提高性能，并且 与用于高数据速率通信系统的常规耙式接收机相比，复杂度较低。

公开(公告)号：US06567017B2

公开(公告)日：2003-05-20

申请号：US09751782

申请日：2000-12-29

Applicant: Joel D. Medlock ,  Paul L. Chou

Inventor： Joel D. Medlock ,  Paul L. Chou

IPC: H03M700

CPC classification number: G06F7/584 ,  G06F2207/583 ,  H04B1/707 ,  H04B1/70756 ,  H04B2201/7071 ,  H04J13/10

Abstract: A configurable code generator system (CGS) for spread spectrum applications is disclosed herein. The CGS includes a composite code generator unit (CGU), a global code generator, and an interface that is coupled to the composite code generator and the global code generator. The CGU has multiple independent code generators, each capable of generating an independent code sequence. The global code generator provides a global code sequence for synchronization. The interface has memory that stores at least one bit of the global sequence and at least one bit from at least one of the independent code sequences of the CGU from which an output conditioning circuit can selectively choose based on a desired communication protocol.

Abstract translation: 本文公开了用于扩展频谱应用的可配置代码生成器系统（CGS）。 CGS包括复合代码发生器单元（CGU），全局代码生成器以及耦合到复合代码生成器和全局代码生成器的接口。 CGU具有多个独立的代码生成器，每个代码生成器能够生成独立的代码序列。 全局代码生成器提供用于同步的全局代码序列。 接口具有存储器，其存储全局序列的至少一个比特和来自CGU的至少一个独立码序列的至少一个比特，其中输出调节电路可以根据期望的通信协议从其中选择性地选择。

公开(公告)号：US20030050022A1

公开(公告)日：2003-03-13

申请号：US10102738

申请日：2002-03-22

Applicant: Fujitsu Limited

Inventor： Koichi Kuroiwa ,  Shoji Taniguchi ,  Masami Kanasugi ,  Junichi Sugimoto

IPC: H04B017/02

CPC classification number: H04B1/70754 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/7071

Abstract: A receiving unit that reduces the amount of power consumed for detecting the timing of each of a plurality of paths via which received signals were received. A receiving section receives signals sent from a base station and transmitted via a plurality of paths. A path detecting section detects the timing of each of the plurality of paths via which the received signals received by the receiving section were transmitted. A path detection range setting section sets a range where a path is detected by the path detecting section on the basis of information indicative of path timing detected by the path detecting section.

Abstract translation: 接收单元，其减少用于检测接收到的信号的多个路径中的每一个的定时的消耗的功率量。 接收部分接收从基站发送并经由多个路径发送的信号。 路径检测部分检测由接收部分接收的接收信号经由哪个多个路径中的每一个的定时被发送。 路径检测范围设定部根据由路径检测部检测到的路径定时的信息，设定由路径检测部检测出路径的范围。

公开(公告)号：US20030031236A1

公开(公告)日：2003-02-13

申请号：US09923374

申请日：2001-08-07

Inventor： Erik Dahlman ,  Yi-Pin Eric Wang ,  Paul W. Dent ,  Gregory E. Bottomley ,  Ali Khayrallah ,  Christer Ostberg

IPC: H04K001/00 ,  H04B015/00 ,  H04L027/30

CPC classification number: H04B1/7115 ,  H04B1/7075 ,  H04B1/709 ,  H04B1/712 ,  H04B2201/7071 ,  H04B2201/709727

Abstract: A spread spectrum signal is processed by correlating the spread spectrum signal with a spreading sequence at a first plurality of correlation times to produce a first plurality of time-offset correlations. The first plurality of time-offset correlations is processed to produce a first symbol representation for a symbol. A first quality is determined for the first symbol representation. Responsive to the determined first quality, it is determined whether to further process the first symbol representation or to process a second symbol representation for the symbol generated from the spread spectrum signal. The first quality may be determined, for example, by decoding the first symbol representations to generate a decoding metric or error check indicator, such as a CRC result. The symbol representations may be generated and/or evaluated for quality in a serial fashion or a parallel fashion.

Abstract translation: 通过在第一多个相关时间将扩展频谱信号与扩频序列相关来处理扩展频谱信号，以产生第一多个时间偏移相关。 处理第一多个时间偏移相关以产生符号的第一符号表示。 确定第一个符号表示的第一个质量。 响应于确定的第一质量，确定是否进一步处理第一符号表示或处理从扩频信号产生的符号的第二符号表示。 可以例如通过对第一符号表示进行解码以产生诸如CRC结果的解码度量或错误检查指示符来确定第一质量。 符号表示可以以串行方式或并行方式生成和/或评估质量。

公开(公告)号：US20030026328A1

公开(公告)日：2003-02-06

申请号：US10102814

申请日：2002-03-22

Applicant: Fujitsu Limited

Inventor： Yoshikazu Yamada ,  Shoji Taniguchi ,  Koichi Kuroiwa ,  Masami Kanasugi

IPC: H04K001/00

CPC classification number: H04B1/7113 ,  H04B2201/7071

Abstract: A receiving unit, receiving method, and semiconductor device that reduce the size of circuits in a receiving unit. A receiving section receives signals sent from a base station and transmitted through a plurality of paths. A path tracking section detects timing of each of the plurality of paths through which the signals received by the receiving section were transmitted. A demodulating section demodulates the received signals by performing a despreading process according to the timing of the plurality of paths detected by the path tracking section. A correlation value calculating section calculates a correlation value between the received signals and a spreading code. A destination selecting section provides output from the correlation value calculating section to the path tracking section in the case of performing a path tracking process by the path tracking section and provides output from the correlation value calculating section to the demodulating section in the case of demodulating the received signals by the demodulating section.

Abstract translation: 一种减小接收单元中的电路尺寸的接收单元，接收方法和半导体器件。 接收部分接收从基站发送并通过多个路径发送的信号。 路径跟踪部分检测发送由接收部分接收的信号的多个路径中的每一个的定时。 解调部通过根据由路径追踪部检测出的多个路径的定时进行解扩处理来解调接收信号。 相关值计算部分计算接收信号和扩展码之间的相关值。 目的地选择部分在路径跟踪部分执行路径跟踪处理的情况下，将相关值计算部分的输出提供给路径跟踪部分，并且在解调该解调部分的情况下将相关值计算部分的输出提供给解调部分 由解调部分接收信号。

公开(公告)号：US20020187748A1

公开(公告)日：2002-12-12

申请号：US10210961

申请日：2002-08-02

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk ,  Gary R. Lomp

IPC: H04B007/185 ,  H04Q007/20

CPC classification number: H04W52/36 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/7071 ,  H04W52/367 ,  H04W52/50 ,  H04W52/60

Abstract: A method of controlling transmission power during the establishment of a channel in a CDMA communication system utilizes the transmission of a short code from a subscriber unit to a base station during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional spreading code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The subscriber unit quickly increases transmission power while repeatedly transmitting the short code until the signal is detected by the base station. Once the base station detects the short code, it sends an indication to the subscriber unit to cease increasing transmission power. The use of short codes limits power overshoot and interference to other subscriber units and permits the base station to quickly synchronize to the spreading code used by the subscriber unit.

公开(公告)号：US20020119784A1

公开(公告)日：2002-08-29

申请号：US10073950

申请日：2002-02-14

Applicant: EVOLIUM S.A.S.

Inventor： Pascal Agin

IPC: H04Q007/20

CPC classification number: H04W28/26 ,  H04B2201/70703 ,  H04B2201/7071 ,  H04J13/0003

Abstract: A method of managing processing resources in a mobile radio system, in which a first entity manages radio resources and corresponding processing resources, the latter being provided in a second entity separate from the first entity, in which method: the second entity signals to the first entity its global processing capacity, or capacity credit, and the consumption law, or quantity of said global processing capacity, or cost, for different spreading factor values, the first entity updates the capacity credit on the basis of the consumption law, and in the case of multicode transmission using N spreading codes, said updating is effected on the basis of the cost for at least one of the N spreading codes.

Abstract translation: 一种在移动无线电系统中管理处理资源的方法，其中第一实体管理无线电资源和对应的处理资源，后者被提供在与第一实体分离的第二实体中，其中第二实体向第一实体发信号 实体其全球处理能力或容量信用，以及针对不同扩展因子值的所述全球处理能力或成本的消费法或数量，第一实体根据消费法更新容量信用，并且在 使用N个扩展码的多码传输的情况，所述更新基于N个扩展码中的至少一个的代价来实现。