公开(公告)号：US07400668B2

公开(公告)日：2008-07-15

申请号：US10067496

申请日：2002-02-04

Applicant: Ghobad Heidari ,  Kuor-Hsin Chang ,  Paul L. Master ,  Eugene B. Hogenauer ,  Walter James Scheuermann

Inventor： Ghobad Heidari ,  Kuor-Hsin Chang ,  Paul L. Master ,  Eugene B. Hogenauer ,  Walter James Scheuermann

IPC: H04B1/707

CPC classification number: G06F15/7867 ,  H04B1/708 ,  H04B2201/70711

Abstract: A system acquisition module and corresponding method for facilitating PN code searching which has a PN sequence generator configurable to generate a plurality of PN sequences. The module and method also includes computational units configurable to correlate each received signal sample of a plurality of received signal samples with a corresponding PN sequence of the plurality of PN sequences, and further configurable to provide other hardware resources. A number of computational units from the plurality of computational units are selectively configured to correlate the received signal samples with the PN sequences-the number depending upon availability of the plurality of computational units from providing the other hardware resources. In another embodiment, a communication device having a system acquisition function is provided which includes the system acquisition module and a receiver configured to receive signals, where a plurality of configurable computational units are selectively configurable to implement the PN sequence generator.

公开(公告)号：US07248623B2

公开(公告)日：2007-07-24

申请号：US10099536

申请日：2002-03-14

Applicant: John H. Oates

Inventor： John H. Oates

IPC: H04B1/00

CPC classification number: H04B1/71052 ,  H04B1/707 ,  H04B1/7093 ,  H04B1/7105 ,  H04B1/71075 ,  H04B1/7115 ,  H04B2201/70707 ,  H04B2201/70711

Abstract: The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, “gamma matrix”) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e.g., from the gamma matrix, a matrix (hereinafter, “R-matrix”) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third processing element produces estimates of the user transmitted symbols as a function of the R-matrix.

Abstract translation: 本发明提供了用于多用户检测（MUD）处理的方法和装置，其具有例如在改进容量CDMA和其它无线基站中的应用。 本发明的一个方面提供一种用于在CDMA短码频谱波形中检测用户发送符号的多处理器，多用户检测系统。 第一处理元件生成表示与一个用户相关联的短码与与一个或多个其他用户相关联的短码之间的相关性的矩阵（以下称为“伽马矩阵”）。 一组第二处理元件例如从伽马矩阵生成基于它们的幅度和时间滞后的用户波形之间的互相关的矩阵（以下称为“R矩阵”）。 第三处理单元产生作为R矩阵的函数的用户发送符号的估计。

公开(公告)号：US07139306B2

公开(公告)日：2006-11-21

申请号：US10099543

申请日：2002-03-14

Applicant: John H. Oates

Inventor： John H. Oates

IPC: H04B1/69

CPC classification number: H04B1/71052 ,  H04B1/707 ,  H04B1/7093 ,  H04B1/7105 ,  H04B1/71075 ,  H04B1/7115 ,  H04B2201/70707 ,  H04B2201/70711

Abstract: The invention provides improved CDMA, WCDMA (UTMS) or other spread spectrum communication systems of the type that processes one or more spread-spectrum waveforms, each representative of a waveform received from a respective user (or other transmitting device). The improvement is characterized by a first logic element that generates a residual composite spread-spectrum waveform as a function of an arithmetic difference between a composite spread-spectrum waveform for all users (or other transmitters) and an estimated spread-spectrum waveform for each user. It is further characterized by one or more second logic elements that generate, for at least a selected user (or other transmitter), a refined spread-spectrum waveform as a function of a sum of the residual composite spread-spectrum waveform and the estimated spread-spectrum waveform for that user.

公开(公告)号：US20060246942A1

公开(公告)日：2006-11-02

申请号：US11116086

申请日：2005-04-27

Applicant: Balasubramanian Ramachandran ,  John Vasa ,  Tudor Lipan ,  Norman Beamish

Inventor： Balasubramanian Ramachandran ,  John Vasa ,  Tudor Lipan ,  Norman Beamish

IPC: H04M1/00

CPC classification number: H04B1/707 ,  H04B1/0067 ,  H04B2201/70711

Abstract: A receiver for a multi-mode wireless device is provided. The receiver has multiple analog RF front end modules, with each module supporting a different mode of operation. The receiver has a single digital backend module for generating a digital baseband signal. A controller selects one of the available RF modules to use, and the selected RF module provides an analog communication signal to the digital backend. Each available mode has an associated set of factors. When a particular mode is selected, the set of factors associated with the selected mode is provided to the digital backend. The digital backend uses these factors to adjust the processing characteristics of its components, such as its analog to digital converter, filters, and gain controller. In this way, the single digital backend is adaptable to the requirements of each of the available radio modes.

公开(公告)号：US07003022B2

公开(公告)日：2006-02-21

申请号：US09845216

申请日：2001-05-01

Applicant: Kenzo Urabe ,  Kazushige Yamamoto

Inventor： Kenzo Urabe ,  Kazushige Yamamoto

IPC: H04B1/69

CPC classification number: H04B1/7093 ,  G06F17/15 ,  H04B1/7117 ,  H04B1/712 ,  H04B2201/70711

Abstract: A matched filter requiring no high-speed processor and which consumes less power is disclosed. Partial filters 301–30N obtained by dividing number of matched filter taps by N are provided with a controller 341 for controlling which partial filters are enabled. The controller 341 is supplied with maximum amount of delay of an input signal and with symbol timing. On the basis of the maximum amount of delay, the controller 341 enables only the minimum number of partial filters 301–30n that are capable of executing an amount of computation that is required in one symbol period. The enabled partial filters are used multiple number of times per symbol period and the output, each time, integrated sample by sample. Since the disabled partial filters will not operate, it is possible to reduce power consumption and computation time.

Abstract translation: 公开了一种不需要高速处理器并且消耗较少功率的匹配滤波器。 通过将匹配的滤波器抽头数除以N而获得的部分滤波器301-30 N具有用于控制哪些部分滤波器被使能的控制器341。 控制器341被提供输入信号和符号定时的最大量的延迟。 基于最大延迟量，控制器341仅能够执行能够执行一个符号周期中所需的计算量的最小数量的部分滤波器301-30n。 启用的部分滤波器每个符号周期使用多次，每次输出，按样本进行综合样本。 由于禁用的部分滤波器不工作，因此可以降低功耗和计算时间。

公开(公告)号：US20060003757A1

公开(公告)日：2006-01-05

申请号：US11193851

申请日：2005-07-29

Applicant: Ravi Subramanian ,  Uma Jha ,  Joel Medlock

Inventor： Ravi Subramanian ,  Uma Jha ,  Joel Medlock

IPC: H04Q7/20

CPC classification number: H04B1/0003 ,  H04B1/707 ,  H04B2201/7071 ,  H04B2201/70711

Abstract: A wireless spread spectrum communication platform for processing a communication signal is disclosed herein. The wireless communication platform includes a first computing element, a second computing element, and a reconfigurable interconnect. The first computing element is coupled to the second computing element via the reconfigurable interconnect. A design configuration of the first computing element is heterogeneous with respect to a design configuration of the second computing element. The reconfigurable interconnect has an uncommitted architecture, thereby allowing it to be configured by an outside source to couple portions of the first reconfigurable interconnect with portions of the second reconfigurable interconnect in a variety of combinations. The first computing element, the second computing element, and the reconfigurable interconnect operable to perform discrete functions suitable for processing of the communication signal.

公开(公告)号：US06785322B1

公开(公告)日：2004-08-31

申请号：US10331085

申请日：2002-12-27

Applicant: John David Kaewell, Jr. ,  Timothy Berghuis ,  Jan Meyer ,  Peter Bohnhoff ,  Alexander Reznik ,  Edward Hepler ,  Michael Koch ,  William C. Hackett ,  David S. Bass ,  Clyde N. Robbins

Inventor： John David Kaewell, Jr. ,  Timothy Berghuis ,  Jan Meyer ,  Peter Bohnhoff ,  Alexander Reznik ,  Edward Hepler ,  Michael Koch ,  William C. Hackett ,  David S. Bass ,  Clyde N. Robbins

IPC: H04B1707

CPC classification number: H04B1/712 ,  H04B1/7117 ,  H04B7/0491 ,  H04B2201/7071 ,  H04B2201/70711

Abstract: A Node-B/base station receiver comprises at least one antenna for receiving signals. Each finger of a pool of reconfigurable Rake fingers recovers a multipath component of a user and is assigned a code of the user, a code phase of the multipath component and an antenna of the at least one antenna. An antenna/Rake finger pool interface provides each finger of the Rake pool an output of the antenna assigned to that Rake finger. A combiner combines the recovered multipath components for a user to produce data of the user.

Abstract translation: 节点B /基站接收机包括用于接收信号的至少一个天线。 可重构Rake指针池的每个手指恢复用户的多径分量，并且被分配用户的代码，多径分量的码相位和至少一个天线的天线。 天线/耙指池接口为耙池的每个手指提供分配给该耙指的天线的输出。 组合器将用于用户的恢复的多路径组件组合以产生用户的数据。

公开(公告)号：US20040062299A1

公开(公告)日：2004-04-01

申请号：US10651282

申请日：2003-08-28

Inventor： John G. McDonough ,  Gibong Jeong ,  Karim Abdulla ,  Rajiv R. Nambiar

IPC: H04B001/707

CPC classification number: H04B1/708 ,  H04B2201/70711 ,  H04J13/0044 ,  H04J13/12

Abstract: System and method for detecting multiple direct sequence spread spectrum signals using a multi-mode searcher. A preferred embodiment comprises the specification of a hypothesis for a particular communications network. The hypothesis can then be used to generate a pseudo-random number (PN) sequence that is provided to a searcher. The searcher can then make adjustments to the PN sequence to bring the PN sequence to conformity with requirements of the particular communications network. The adjustment to the PN sequence permits the use of a multi-mode searcher to perform searches for signals of various communications networks with minimal hardware dedicated to each communications network.

Abstract translation: 使用多模式搜索器检测多个直接序列扩频信号的系统和方法。 优选实施例包括对特定通信网络的假设的规定。 然后可以使用该假设来产生提供给搜索者的伪随机数（PN）序列。 然后，搜索者可以对PN序列进行调整，使PN序列符合特定通信网络的要求。 对PN序列的调整允许使用多模式搜索器以专用于每个通信网络的最小硬件来执行各种通信网络的信号的搜索。

公开(公告)号：US20040047439A1

公开(公告)日：2004-03-11

申请号：US10412475

申请日：2003-04-11

Applicant: InterDigital Technology Corporation

Inventor： John David Kaewell JR. ,  Timothy Berghuis ,  Jan Meyer ,  Peter Bohnhoff ,  Alexander Reznik ,  Edward L. Hepler ,  Michael Koch ,  William C. Hackett ,  David S. Bass ,  Steven Ferrante

IPC: H04B001/10

CPC classification number: H04B1/7093 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/709 ,  H04B1/7113 ,  H04B1/7117 ,  H04B1/712 ,  H04B7/0491 ,  H04B2201/7071 ,  H04B2201/70711

Abstract: A Node-B/base station has a path searcher and at least one antenna for receiving signals from users. The path searcher comprises a set of correlators. Each correlator correlates an inputted user code with an inputted antenna output of the at least one antenna. An antenna controller selectively couples any output of the at least one antenna to an input of each correlator of the set of correlators. A code phase controller selects a user code for input into the set of correlators. Each delay of a series of delays delays the selected user code by a predetermined amount and each correlator of the set of correlators receives a different code phase delay of the selected user code. A sorter and path selector sorts the output energy levels of each correlator of the sets of correlators and produces a path profile for a user based on the sorted output energy levels.

Abstract translation: 节点B /基站具有路径搜索器和用于从用户接收信号的至少一个天线。 路径搜索器包括一组相关器。 每个相关器将输入的用户代码与至少一个天线的输入的天线输出相关联。 天线控制器选择性地将至少一个天线的任何输出耦合到该组相关器的每个相关器的输入端。 代码相位控制器选择用于输入到该组相关器的用户代码。 一系列延迟的每个延迟将所选择的用户码延迟预定量，并且该组相关器的每个相关器接收所选用户码的不同码相位延迟。 分拣机和路径选择器对相关器组的每个相关器的输出能量进行排序，并且基于排序的输出能级产生用户的路径简档。

公开(公告)号：US20030202559A1

公开(公告)日：2003-10-30

申请号：US10099545

申请日：2002-03-14

Inventor： John H. Oates ,  Steven R. Imperiali ,  Alden J. Fuchs ,  Kathleen J. Jacques ,  Jonathan E. Greene ,  Paul E. Cantrell ,  Frank P. Lauginiger ,  David E. Majchrzak ,  Mirza Cifric ,  William J. Jenkins ,  Ian N. Dunn ,  Michael J. Vinskus

IPC: H04B001/69

CPC classification number: H04B1/71052 ,  H04B1/707 ,  H04B1/7093 ,  H04B1/7105 ,  H04B1/71075 ,  H04B1/7115 ,  H04B2201/70707 ,  H04B2201/70711

Abstract: The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, nullgamma matrixnull) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e.g., from the gamma matrix, a matrix (hereinafter, nullR-matrixnull) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third procesing element produces estimates of the user transmitted symbols as a function of the R-matrix.

Abstract translation: 本发明提供了用于多用户检测（MUD）处理的方法和装置，其具有例如在改进容量CDMA和其它无线基站中的应用。 本发明的一个方面提供一种用于在CDMA短码频谱波形中检测用户发送符号的多处理器，多用户检测系统。 第一处理元件生成表示与一个用户相关联的短码与与一个或多个其他用户相关联的短码之间的相关性的矩阵（以下称为“伽马矩阵”）。 一组第二处理元件例如从伽马矩阵生成基于它们的幅度和时间滞后的用户波形之间的互相关的矩阵（以下称为“R矩阵”）。 第三处理元素产生用户传输符号作为R矩阵的函数的估计。