公开(公告)号：US07010061B2

公开(公告)日：2006-03-07

申请号：US09751783

申请日：2000-12-29

Applicant: Ravi Subramanian

Inventor： Ravi Subramanian

IPC: H04L27/14 ,  H04L27/16 ,  H04L27/22

CPC classification number: H04B1/0003 ,  H04B1/0007 ,  H04B1/28 ,  H04B1/406 ,  H04B1/70735 ,  H04B1/7085 ,  H04B2201/70701 ,  H04B2201/70711 ,  H04L25/0204

Abstract: A configurable all-digital coherent demodulator system for spread spectrum digital communications is disclosed herein. The demodulator system includes an extended and long code demodulator (ELCD) coupled to a traffic channel demodulator (TCD) and a parameter estimator (PE). The demodulator also includes a pilot assisted correction device (PACD) that is coupled to the PE and the TCD. The ELCD provides a code-demodulated signal to the TCD and the PE. In turn, the TCD provides a demodulated output data signal to the PE. The PACD corrects the phase error of the demodulated output data based on an error estimate that is fed forward from the PE. Accumulation operations in the ELCD, TCD, and PE are all programmable. Similarly, a phase delay in the PACD is also programmable to provide synchronization with the error estimate from the PE.

公开(公告)号：US20050152322A1

公开(公告)日：2005-07-14

申请号：US10965261

申请日：2004-10-15

Applicant: Anthony Dolwin ,  Rollo Burgess ,  Michael Fitton

Inventor： Anthony Dolwin ,  Rollo Burgess ,  Michael Fitton

IPC: G06F9/445 ,  G06F15/78 ,  H04B1/707 ,  H04W8/24 ,  H04Q7/24

CPC classification number: H04W8/245 ,  H04B2201/70711

Abstract: The present invention relates to re-configurable signal processing modules in particular, although not exclusively, for wireless communications terminals. In general terms in one aspect the present invention provides a system for reconfiguring a signal processing module having a number of re-configurable resources such as re-configurable hardware blocks including ASIC's and field programmable logic gate arrays (FPGA's), as well as software modules for implementing different functions and which can be run on a DSP or other processing platform within the signal processing module. The module may be a mobile terminal or a base station in a wireless communications system for example. The system comprises means for generating a commands data structure comprising configuration commands for the resources, and may further comprise means for communicating this data structure to the signal processing module. The module has means for reconfiguring itself using this data structure. Typically the data structure will be a process timetable having time stamped configuration and run-time commands suitable for being dispatched to the appropriate resource.

Abstract translation: 本发明特别涉及可重配置的信号处理模块，尽管不是排他地涉及无线通信终端。 一般而言，在一个方面，本发明提供了一种用于重新配置具有多个可重新配置的资源的信号处理模块的系统，例如包括ASIC和现场可编程逻辑门阵列（FPGA）的可重新配置的硬件块，以及软件模块 用于实现不同的功能，并且可以在信号处理模块中的DSP或其他处理平台上运行。 该模块可以是例如无线通信系统中的移动终端或基站。 该系统包括用于生成包括用于资源的配置命令的命令数据结构的装置，并且还可以包括用于将该数据结构传送到信号处理模块的装置。 该模块具有使用此数据结构重新配置自身的方法。 通常，数据结构将是一个具有时间戳配置和运行时命令的流程时间表，适合于调度到适当的资源。

公开(公告)号：US20040202228A1

公开(公告)日：2004-10-14

申请号：US10838634

申请日：2004-05-04

Applicant: InterDigital Technology Corporation

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: H04B001/707

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：US20040077353A1

公开(公告)日：2004-04-22

申请号：US10684747

申请日：2003-10-14

Inventor： Ronald L. Mahany

IPC: H04Q007/20

CPC classification number: H04W52/46 ,  H04B1/406 ,  H04B1/692 ,  H04B2201/70711 ,  H04W52/38

Abstract: A data transceiver module for digital data communications in a portable handheld data terminal has multiple data spread spectrum modes which include direct sequence and frequency function modulation algorithms. The transceiver module has multiple user or program configurable data rates, modulation, channelization and process gain in order to maximize the performance of radio data transmissions and to maximize interference immunity. Various module housings, which may be PCMCIA type, are able to be mated with a suitably designed data terminal. Media access control protocols and interfaces of multiple nominal operational frequencies are utilized. Wireless access devices in a cell based network each consider a variety of factors when choosing one of a plurality of modes of wireless operation and associated operating parameters. Such selection defines a communication channel to support wireless data, message and communication exchanges. In further embodiments, the wireless access devices also support a second channel, a busy/control channel, for managing communication on the main communication channel and to overcome roaming and hidden terminal problems. Roaming terminal devices are also configured to support the dual channel design. Such configuration in both circumstances may involve the use of a multimode radio that is timeshared between the two channels or two radios, one dedicated to each channel.

Abstract translation: 用于便携式手持数据终端中的数字数据通信的数据收发模块具有包括直接序列和频率函数调制算法在内的多种数据扩频模式。 收发器模块具有多个用户或程序可配置的数据速率，调制，信道化和过程增益，以便最大限度地提高无线电数据传输的性能并最​​大化抗干扰能力。 可以是PCMCIA型的各种模块外壳能够与适当设计的数据终端进行配合。 利用媒体访问控制协议和多个标称工作频率的接口。 基于小区的网络中的无线接入设备在选择无线操作的多种模式和相关操作参数中的一种时考虑各种因素。 这种选择定义了支持无线数据，消息和通信交换的通信信道。 在另外的实施例中，无线接入设备还支持用于管理主通信信道上的通信并克服漫游和隐藏终端问题的第二信道，繁忙/控制信道。 漫游终端设备也被配置为支持双通道设计。 在这两种情况下的这种配置可能涉及使用在两个信道或两个无线电之间进行倍数共享的多模无线电，一个专用于每个信道。

公开(公告)号：US20030231702A1

公开(公告)日：2003-12-18

申请号：US10291176

申请日：2002-11-08

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

IPC: H04B001/707

CPC classification number: H04B1/71052 ,  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 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：US20030202566A1

公开(公告)日：2003-10-30

申请号：US10099883

申请日：2002-03-14

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

IPC: H04B001/707

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。

公开(公告)号：US20030099225A1

公开(公告)日：2003-05-29

申请号：US10099543

申请日：2002-03-14

Inventor： John H. Oates

IPC: H04B007/216

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.

Abstract translation: 本发明提供了改进的CDMA，WCDMA（UTMS）或处理一个或多个扩展频谱波形类型的其他扩频通信系统，每个扩频波形代表从相应用户（或其他发送设备）接收的波形。 该改进的特征在于第一逻辑元件，其产生作为所有用户（或其他发射机）的复合扩频波形与每个用户的估计扩频波形之间的算术差的函数的残差复合扩频波形 。 进一步的特征在于一个或多个第二逻辑元件，对于至少一个选定的用户（或其他发射机），生成作为残差复合扩频波形和估计扩频之和的函数的精细扩频波形 该用户的光谱波形。

公开(公告)号：US20030099224A1

公开(公告)日：2003-05-29

申请号：US10099536

申请日：2002-03-14

Inventor： John H. Oates

IPC: H04B007/216

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。

公开(公告)号：US06480529B1

公开(公告)日：2002-11-12

申请号：US09468556

申请日：1999-12-21

Applicant: Gilbert C. Sih ,  Ian Fevrier ,  Inyup Kang ,  Christopher Patrick

Inventor： Gilbert C. Sih ,  Ian Fevrier ,  Inyup Kang ,  Christopher Patrick

IPC: H04B1500

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

Abstract: A novel and improved method and apparatus for searching is described. This searcher combines the ability to search multiple offsets of single pilots, such as those found in the IS-95 system, with the ability to search multiple pilots, such as those found in a GPS location determination system. Both types of searching can be done in a single architecture combining the parallel computation features of a matched filter with the flexibility of allowing a variable number of coherent accumulations and a variable number of non-coherent accumulations to be performed at high speed for a wide range of search hypotheses in a resource efficient manner. This invention allows for parallel use of the matched filter structure in a time-sliced manner to search multiple windows. In addition, the searcher allows for optional independent Walsh decovering for each search window. The time-sharing approach allows for optional frequency searching of any offset.

Abstract translation: 描述了一种新颖的，改进的搜索方法和装置。 该搜索者组合搜索诸如在IS-95系统中发现的单个导频的多个偏移的能力，具有搜索多个导频的能力，例如在GPS位置确定系统中发现的那些。 两种类型的搜索可以在单个架构中完成，该结构将匹配滤波器的并行计算特征与允许可变数量的相干累加的灵活性并且可变数量的非相干累加在高范围内进行宽范围 的资源有效的搜索假设。 本发明允许以时间分割的方式并行使用匹配的滤波器结构来搜索多个窗口。 此外，搜索器允许为每个搜索窗口选择独立的沃尔什解密。 时间分配方法允许任意偏移量的可选频率搜索。

公开(公告)号：US06366570B1

公开(公告)日：2002-04-02

申请号：US09063232

申请日：1998-04-20

Applicant: Shashikant Bhagalia

Inventor： Shashikant Bhagalia

IPC: H04B7216

CPC classification number: H04Q11/04 ,  G06F9/546 ,  H04B1/707 ,  H04B1/70735 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/70775 ,  H04B1/7085 ,  H04B2001/70706 ,  H04B2201/70702 ,  H04B2201/70706 ,  H04B2201/7071 ,  H04B2201/70711 ,  H04B2201/709709 ,  H04J3/0682 ,  H04J13/00 ,  H04L12/66 ,  H04L29/06 ,  H04L41/0226 ,  H04L41/0233 ,  H04L41/08 ,  H04L41/22 ,  H04L43/00 ,  H04L69/08 ,  H04L69/14 ,  H04Q2213/1305 ,  H04Q2213/13093 ,  H04Q2213/13098 ,  H04Q2213/13109 ,  H04Q2213/1319 ,  H04Q2213/13196 ,  H04Q2213/13199 ,  H04Q2213/13202 ,  H04Q2213/13204 ,  H04Q2213/13216 ,  H04Q2213/13292 ,  H04Q2213/13296 ,  H04Q2213/13298 ,  H04Q2213/13299 ,  H04Q2213/13335 ,  H04Q2213/13376 ,  H04W8/205 ,  H04W52/04 ,  H04W52/08 ,  H04W52/52 ,  H04W84/14 ,  H04W88/021 ,  H04W92/08

Abstract: A CDMA signal processing circuit (300) includes a summer circuit (302) that receives a plurality of CDMA signals from a plurality of channels (304). The summer circuit (302) combines the plurality of CDMA signals according to a power magnitude value and power direction value associated with each CDMA signal. The summer circuit (302) generates a summed signal (306) that is applied to a clipping circuit (308). The clipping circuit (308) removes a portion of the summed signal (306) outside a desired threshold range and generates a clipped signal (310) therefrom. Digital to analog processing circuits (312 and 314) convert the clipped signal (310) into a half width encoded format. Digital to analog processing circuits (312 and 314) transform the half width encoded clipped signal into analog I and Q signals, respectively. The analog I and Q signals are applied to corresponding filters (316 and 318) prior to transmission.

Abstract translation: CDMA信号处理电路（300）包括从多个信道（304）接收多个CDMA信号的加法电路（302）。 夏季电路（302）根据与每个CDMA信号相关联的功率幅度值和功率方向值组合多个CDMA信号。 夏季电路（302）产生施加到限幅电路（308）的求和信号（306）。 削波电路（308）将期望阈值范围之外的相加信号（306）的一部分去除并从其产生一个限幅信号（310）。 数字到模拟处理电路（312和314）将限幅信号（310）转换成半宽度编码格式。 数字到模拟处理电路（312和314）分别将半宽编码的剪辑信号变换为模拟I和Q信号。 在传输之前，模拟I和Q信号被应用于相应的滤波器（316和318）。