公开(公告)号：US20040184514A1

公开(公告)日：2004-09-23

申请号：US10677299

申请日：2003-10-03

Inventor： Seo-Weon Heo ,  Seong-Woo Ahn ,  Sang-Min Bae

IPC: H04B001/707

CPC classification number: H04B1/7107 ,  H04B1/7115 ,  H04B2201/7071

Abstract: Disclosed is an apparatus and method for canceling an interference signal in a packet data receiver for a packet data communication system in which data is transmitted and received over a packet data channel and a packet data control channel. The packet data channel is time-synchronized with the packet data control channel. A buffer temporarily stores a signal on the packet data channel, combined after being received through multiple paths, until the packet data control channel is decoded. An interference cancellation controller analyzes packet data control channel information obtained by decoding the packet data control channel, and outputs an interference cancellation command signal only when it is determined that effective packet data to be received exists in a current time slot. An interference cancellation section receives the packet data channel signal output from the buffer, and cancels an interference signal from the packet data channel signal only when the interference cancellation command signal is received.

Abstract translation: 公开了一种用于在分组数据通信系统的分组数据接收机中消除干扰信号的装置和方法，其中通过分组数据信道和分组数据控制信道发送和接收数据。 分组数据信道与分组数据控制信道时间同步。 缓冲器将信号临时存储在分组数据信道上，在通过多个路径被接收之后组合，直到分组数据控制信道被解码。 干扰消除控制器分析通过对分组数据控制信道进行解码而获得的分组数据控制信道信息，并且仅当确定在当前时隙中存在要接收的有效分组数据时才输出干扰消除指令信号。 干扰消除部分接收从缓冲器输出的分组数据信道信号，并且仅在接收到干扰消除指令信号时从分组数据信道信号中消除干扰信号。

公开(公告)号：US20040132488A1

公开(公告)日：2004-07-08

申请号：US10730148

申请日：2003-12-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Takahashi Hidehiro ,  Sang-Woo Kim ,  Se-Hee Han ,  Jai-Shin Chung

IPC: H04Q007/20

CPC classification number: H04B1/0067 ,  H04B1/005 ,  H04B1/406 ,  H04B1/707 ,  H04B2201/7071

Abstract: There is provided a multi-mode communication system which is operable according to different operating modes, such as GSM and WCDMA. The multi-mode communication system includes first and second switching units, a delta-sigma modulator, an analog-to-digital converter, sequential convolution units and a selection unit. The delta-sigma modulator samples an analog signal, which is inputted through the first switching unit in one mode, into 1-bit digital signal. In another mode, the analog-to-digital converter samples an analog signal, which is inputted through the first switching unit into an n-bit digital signal. The sequential convolution units multiply filter factors with the output of the delta-sigma modulator, which is inputted through the second switching unit at the first mode, and multiply PN codes by the output of the analog-to-digital converter, which is inputted through the second switching unit at the second mode, to generate WCDMA output waveforms. The selection unit delays the outputs of the sequential convolution units by a predetermined time at the GSM mode to restore GSM output waveforms. Accordingly, the multi-mode communication system is operable according to multimodes, such as GSM mode and WCDMA mode.

Abstract translation: 提供了可以根据不同的操作模式操作的多模式通信系统，例如GSM和WCDMA。 多模式通信系统包括第一和第二开关单元，Δ-Σ调制器，模数转换器，顺序卷积单元和选择单元。 Δ-Σ调制器将在一种模式中通过第一开关单元输入的模拟信号采样成1位数字信号。 在另一种模式中，模数转换器将通过第一开关单元输入的模拟信号取样成n位数字信号。 顺序卷积单元将滤波器因子与在第一模式下通过第二开关单元输入的Δ-Σ调制器的输出相乘，并将PN码乘以模数转换器的输出，该输出通过 第二切换单元处于第二模式，以产生WCDMA输出波形。 选择单元在GSM模式下将顺序卷积单元的输出延迟预定时间以恢复GSM输出波形。 因此，多模式通信系统可以根据诸如GSM模式和WCDMA模式的多模式来操作。

公开(公告)号：US20040127164A1

公开(公告)日：2004-07-01

申请号：US10699707

申请日：2003-11-03

Applicant: Texas Instruments Incorporated

Inventor： Antonio F. Mondragon-Torres ,  Steven P. Pekarich ,  Timothy M. Schmidl ,  Gibong Jeong ,  Aris Papasakellariou ,  Anand G. Dabak ,  Eko N. Onggosanusi

IPC: H04B017/00

CPC classification number: H04L25/03006 ,  H04B1/7103 ,  H04B1/7117 ,  H04B2201/7071 ,  H04L25/03987 ,  H04L2025/03401 ,  H04L2025/0342 ,  H04L2025/03509 ,  H04L2025/03535

Abstract: A reconfigurable chip level equalizer having circuitry that restores signal orthogonality and eliminates channel interference for a wireless transmitted signal. In at least some embodiments, the reconfigurable chip level equalizer comprises two or more adaptive equalizers, a plurality of operational blocks that interconnect the two or more adaptive equalizers, and a control mechanism that configures the two or more adaptive equalizers and operational blocks according to different signal delay profiles.

Abstract translation: 具有恢复信号正交性并消除无线发射信号的信道干扰的电路的可重构芯片级均衡器。 在至少一些实施例中，可重新配置的芯片级均衡器包括两个或多个自适应均衡器，互连两个或多个自适应均衡器的多个操作块，以及根据不同的配置两个或多个自适应均衡器和操作块的控制机制 信号延迟分布。

公开(公告)号：US06744809B2

公开(公告)日：2004-06-01

申请号：US10071899

申请日：2002-02-08

Applicant: Gary Lomp ,  Fatih Ozluturk

Inventor： Gary Lomp ,  Fatih Ozluturk

IPC: H04B1500

CPC classification number: H04B7/2637 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/0077 ,  H04J13/10 ,  H04J13/107 ,  H04J13/12 ,  H04J13/16 ,  H04J2013/0037 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247 ,  H04W52/26 ,  H04W52/262 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60 ,  Y02D10/14

Abstract: A device tracks multipath components of a spread-spectrum signal. The spread-spectrum signal has an associated chip code sequence. The device receives multipath components of the spread-spectrum signal. A first and second plurality of multipath components are despread about a center code phase. The first plurality is a sequence of multipath components prior to the center code phase and the second plurality is a sequence of multipath components after the center code phase. A first and second combined energy is determined from the first and second plurality of multipath components. A tracking delay is calculated based on a difference between the first and the second combined energies. The center code phase is adjusted by said tracking delay.

Abstract translation: 一个设备跟踪扩频信号的多径分量。 扩频信号具有相关的码片序列。 该设备接收扩频信号的多径分量。 关于中心码相位解扩展第一和第二多个多径分量。 第一组是在中心码相位之前的多径分量序列，第二组是中心码相位之后的多径分量序列。 从第一和第二多个多径分量确定第一和第二组合能量。 基于第一和第二组合能量之间的差来计算跟踪延迟。 通过所述跟踪延迟来调整中心码相位。

公开(公告)号：US06707805B2

公开(公告)日：2004-03-16

申请号：US09742019

申请日：2000-12-21

Applicant: Fatih M. Ozluturk ,  Gary R. Lomp ,  John Kowalski

Inventor： Fatih M. Ozluturk ,  Gary R. Lomp ,  John Kowalski

IPC: H04B7216

CPC classification number: H04B7/2637 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/0077 ,  H04J13/10 ,  H04J13/107 ,  H04J13/12 ,  H04J13/16 ,  H04J2013/0037 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247 ,  H04W52/26 ,  H04W52/262 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60 ,  Y02D10/14

Abstract: A code-division-multiple-access (CDMA) system employing spread-spectrum modulation. The CDMA system has a base station (BS), and a plurality of subscriber units (SUs). The signals transmitted between the BS and SU use spread-spectrum modulation. The improvement method for maintaining control of power from an SU to a BS comprises sending from the subscriber unit, using spread-spectrum modulation, a SU-spreading code, and detecting, at the BS, the SU-spreading code from the SU. In response to detecting the SU-spreading code at the BS, a BS-spreading code is sent to the SU, using spread-spectrum modulation. At the SU, if the BS-spreading code is detected, then transmit power of the SU is reduced. If the BS-spreading code is not detected at the SU, then transmit power of the SU is increased.

Abstract translation: 采用扩频调制的码分多址（CDMA）系统。 CDMA系统具有基站（BS）和多个用户单元（SU）。 在BS和SU之间传输的信号使用扩频调制。 用于维持从SU到BS的电力控制的改进方法包括使用扩频调制SU扩频码从用户单元发送，并且在BS处从SU检测SU扩展码。 响应于在BS处检测到SU扩展码，使用扩频调制将SU扩展码发送到SU。 在SU中，如果检测到BS扩展码，则SU的发射功率减小。 如果在SU处未检测到BS扩展码，则SU的发射功率增加。

公开(公告)号：US20040004997A1

公开(公告)日：2004-01-08

申请号：US10613477

申请日：2003-07-02

Applicant: CommASIC, Inc.

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

IPC: H03D001/00 ,  H04L027/06 ,  H04B001/707

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

Abstract: A method of searching digital communication signals in a system includes combining a plurality of channel measurements, providing output of the combining of channel measurements as an added input to the plurality of channel measurements, and acquiring a signal symbol based on results from the combining of channel measurements without addressing all timing hypothesis individually via a correlation operation.

Abstract translation: 一种在系统中搜索数字通信信号的方法包括组合多个信道测量，提供信道测量的组合输出作为多个信道测量的附加输入，以及基于信道的组合的结果获取信号符号 没有通过相关操作单独解决所有时序假设的测量。

公开(公告)号：US06658045B1

公开(公告)日：2003-12-02

申请号：US09253094

申请日：1999-02-22

Applicant: Xin Jin

Inventor： Xin Jin

IPC: H04B169

CPC classification number: H04B7/01 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/712 ,  H04B2201/70707 ,  H04B2201/7071

Abstract: The invention is a CDMA system which achieves improved performance by virtue of being adaptive to the speed of each mobile unit in the system. A speed estimator for each mobile unit can be located in the mobile unit itself and/or in the base station. The speed estimate is used to modify a variety of parameters within processing fingers in the mobile unit and in the base station, including the accumulation period of certain accumulators and the time constant for loop filters. The speed estimate also influences assignment, by a control unit, of path delays to respective processing fingers for despreading. Furthermore, the speed estimate is used by the control unit to decide whether or not finger outputs are to be combined by a diversity combiner in the receiver. In addition, the speed estimate is used to optimize the closed-loop power control target and the energy of a transmitted pilot. The speed estimate is also used for allocation of pooled finger and searcher resources, as well as data transmission rate negotiation and interleaver/deinterleaver length configuration.

Abstract translation: 本发明是通过适应于系统中的每个移动单元的速度来实现改进的性能的CDMA系统。 每个移动单元的速度估计器可以位于移动单元本身和/或基站中。 速度估计用于修改移动单元和基站中的处理指状物内的各种参数，包括某些累加器的累积周期和环路滤波器的时间常数。 速度估计也影响由控制单元对各个处理手指进行解扩的路径延迟的分配。 此外，控制单元使用速度估计来确定手指输出是否由接收机中的分集组合器组合。 此外，速度估计用于优化闭环功率控制目标和发射导频的能量。 速度估计也用于合并手指和搜索资源的分配，以及数据传输速率协商和交织器/解交织器长度配置。

公开(公告)号：US20030215002A1

公开(公告)日：2003-11-20

申请号：US10150844

申请日：2002-05-17

Applicant: MOTOROLA, INC.

Inventor： Robert Gorday ,  Clinton C. Powell ,  David Taubenheim

IPC: H04K001/00

CPC classification number: H04B1/7115 ,  H04B1/709 ,  H04B1/7117 ,  H04B2201/70701 ,  H04B2201/7071

Abstract: A processor (216) time-shares correlators (206) to process (402) pilot channels for a plurality of branches to derive pilot symbols for each of the plurality of branches before processing control and data channels. The processor and the correlators cooperate to determine (404) from the pilot symbols a timing estimate for each of the plurality of branches. A signal quality estimator (210) determines (406) from the pilot symbols a signal quality for each of the plurality of branches. Subsequently, the processor cooperates with the correlators to process (408) the control and data channels of the plurality of branches, in an order determined by a plurality of branch attributes including at least one of the signal quality and the timing estimate determined for each of the plurality of branches.

Abstract translation: 处理器（216）用于处理（402）多个分支的导频信道的时间共享相关器（206），以在处理控制和数据信道之前导出多个分支中的每一个的导频符号。 协处理器和相关器协调从导频符号确定（404）多个分支中的每一个的定时估计。 信号质量估计器（210）从导频符号确定（406）每个分支的信号质量。 随后，处理器与相关器协作以由多个分支属性确定的顺序处理（408）多个分支的控制和数据信道，该顺序属性包括以下各项中确定的信号质量和定时估计中的至少一个： 多个分支。

公开(公告)号：US20030193914A1

公开(公告)日：2003-10-16

申请号：US09757768

申请日：2001-01-10

Inventor： Gary Lomp ,  John Kowalski ,  Fatih Ozluturk ,  Avi Silverberg ,  Robert Regis ,  Michael Luddy ,  Alexander Marra ,  Alexander Jacques

IPC: H04B007/216

CPC classification number: H04B7/2637 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/0077 ,  H04J13/10 ,  H04J13/107 ,  H04J13/12 ,  H04J13/16 ,  H04J2013/0037 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247 ,  H04W52/26 ,  H04W52/262 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60 ,  Y02D10/14

Abstract: A multiple access, spread-spectrum communication system processes a plurality of information signals received by a Radio Carrier Station (RCS) over telecommunication lines for simultaneous transmission over a radio frequency (RF) channel as a code-division-multiplexed (CDM) signal to a group of Subscriber Units (SUs). The RCS receives a call request signal that corresponds to a telecommunication line information signal, and a user identification signal that identifies a user to receive the call. The RCS includes a plurality of Code Division Multiple Access (CDMA) modems, one of which provides a global pilot code signal. The modems provide message code signals synchronized to the global pilot signal. Each modem combines an information signal with a message code signal to provide a CDM processed signal. The RCS includes a system channel controller is coupled to receive a remote call. An RF transmitter is connected to all of the modems to combine the CDM processed signals with the global pilot code signal to generate a CDM signal. The RF transmitter also modulates a carrier signal with the CDM signal and transmits the modulated carrier signal through an RF communication channel to the SUs. Each SU includes a CDMA modem which is also synchronized to the global pilot signal. The CDMA modem despreads the CDM signal and provides a despread information signal to the user. The system includes a closed loop power control system for maintaining a minimum system transmit power level for the RCS and the SUs, and system capacity management for maintaining a maximum number of active SUs for improved system performance.

Abstract translation: 多址，扩频通信系统通过电信线处理由无线电载波台（RCS）接收的多个信息信号，以便通过射频（RF）信道作为码分复用（CDM）信号同时传输， 一组用户单位（SU）。 RCS接收对应于电信线信息信号的呼叫请求信号，以及识别用户接收呼叫的用户识别信号。 RCS包括多个码分多址（CDMA）调制解调器，其中之一提供全局导频码信号。 调制解调器提供与全局导频信号同步的消息代码信号。 每个调制解调器将信息信号与消息代码信号组合以提供CDM处理的信号。 RCS包括耦合以接收远程呼叫的系统信道控制器。 RF发射器连接到所有调制解调器，以将CDM处理的信号与全局导频码信号组合以产生CDM信号。 RF发射机还利用CDM信号调制载波信号，并通过RF通信信道将调制载波信号发送到SU。 每个SU包括也与全局导频信号同步的CDMA调制解调器。 CDMA调制解调器解扩CDM信号并向用户提供解扩信息信号。 该系统包括用于维持RCS和SU的最小系统发射功率水平的闭环功率控制系统，以及用于维持最大数量的主动SU以提高系统性能的系统容量管理。

公开(公告)号：US06577876B2

公开(公告)日：2003-06-10

申请号：US10087362

申请日：2002-03-01

Applicant: Fatih M. Ozluturk ,  Gary R. Lomp

Inventor： Fatih M. Ozluturk ,  Gary R. Lomp

IPC: H04Q720

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 base station for controlling transmission power during the establishment of a communication channel utilizes the reception of a short code 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 access code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The power of the short code is quickly increased until the signal is detected by the base station. Once the base station detects the short code, it transmits an indication that the short code has been detected.