公开(公告)号：EP1583232B1

公开(公告)日：2010-06-02

申请号：EP05090077.8

申请日：2005-03-29

Applicant: NEC CORPORATION

Inventor： Ishihara, Takeshi, c/o NEC Corporation

IPC: H03G3/30 ,  H04B7/005

CPC classification number: H04W52/22 ,  H03G3/3068 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/702 ,  H03M1/122 ,  H03M1/18 ,  H03M1/183

公开(公告)号：EP1650890A4

公开(公告)日：2006-08-23

申请号：EP03817647

申请日：2003-07-25

Applicant: FUJITSU LTD

Inventor： SATO TADAHIRO ,  ADACHI AKIFUMI

IPC: H04B17/40 ,  H04J3/00 ,  H03G3/00 ,  H03G3/20 ,  H03G3/30 ,  H04B1/16 ,  H04B1/707 ,  H04B7/005 ,  H04J11/00 ,  H04J13/00

CPC classification number: H03G3/3052 ,  H03G3/005 ,  H03G3/3078 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/305 ,  H04B1/707 ,  H04B2201/70701 ,  H04B2201/70706

Abstract: A received frame is branched into a gain control system (20A) for common pilot signals and a gain control system (20B) for individual data signals. The gain control system (20A) controls the gain of the common pilot signals, and the gain control system (20B) controls the gain of the data signals. A signal processor (30) establishes synchronization of frames, outputs a gain control signal (g1) so that the gain of the common pilot signal is constant, to a gain control circuit (21a) for the common pilot signals, and outputs a gain control signal (g2) so that the gain of the data signal is constant, to a gain control circuit (21b) for the data signals. The gain is controlled to be constant, thereby preventing saturation of ADC (26a, 26b, 27a, 27b) and S/N deterioration.

Abstract translation: 接收到的帧被分支到公共导频信号增益控制系统（20A）和单独的数据信号增益控制系统（20B）。 当增益控制系统（20B）增益控制数据信号的增益时，增益控制系统（20A）增益控制公共导频信号的增益。 信号处理器（30）执行与帧的同步，向公共导频信号增益控制电路（21a）输出用于使公共导频信号的增益恒定的增益控制信号（g1），并输出增益控制信号（g2） ），用于使数据信号的增益恒定到数据信号增益控制电路（21b）。 由于增益被控制为恒定，所以可以防止ADC（26a，26b，27a，27b）的饱和和S / N劣化。

公开(公告)号：EP1679792A2

公开(公告)日：2006-07-12

申请号：EP05251659.8

申请日：2005-03-18

Applicant: Microtune (Texas) L.P.

Inventor： Hennig, Andreas G.

IPC: H03G3/30

CPC classification number: H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/706

Abstract: A receiver for processing a signal comprises a first amplifier circuit and a second amplifier circuit. The first amplifier circuit is operated in association with a first gain profile. The second amplifier circuit is operated in association with a second gain profile. The receiver further comprises a gain control circuit that determines a quality indicator associated with a modulated signal. The gain control circuit adjusts the first gain profile and the second gain profile based at least in part upon the determined quality indicator.

Abstract translation: 一种用于处理信号接收器包括一个第一放大电路和第二放大电路。 第一放大器电路与第一增益曲线的关联操作。 第二放大器电路在与第二增益分布的关联操作。 该接收机还包括一个增益控制电路做bestimmt与调制信号相关联的质量指示器。 增益控制电路bestimmt第一增益曲线以及根据确定性开采质量指示符至少部分地基于所述第二增益轮廓。

公开(公告)号：EP1650890B1

公开(公告)日：2012-04-18

申请号：EP03817647.5

申请日：2003-07-25

Applicant: FUJITSU LIMITED

Inventor： SATO, Tadahiro c/o FUJITSU LIMITED ,  ADACHI, Akifumi c/o FUJITSU LIMITED

IPC: H04B1/707 ,  H03G3/30 ,  H03G3/00

CPC classification number: H03G3/3052 ,  H03G3/005 ,  H03G3/3078 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/305 ,  H04B1/707 ,  H04B2201/70701 ,  H04B2201/70706

Abstract: A received frame is branched into a gain control system (20A) for common pilot signals and a gain control system (20B) for individual data signals. The gain control system (20A) controls the gain of the common pilot signals, and the gain control system (20B) controls the gain of the data signals. A signal processor (30) establishes synchronization of frames, outputs a gain control signal (g1) so that the gain of the common pilot signal is constant, to a gain control circuit (21a) for the common pilot signals, and outputs a gain control signal (g2) so that the gain of the data signal is constant, to a gain control circuit (21b) for the data signals. The gain is controlled to be constant, thereby preventing saturation of ADC (26a, 26b, 27a, 27b) and S/N deterioration.

公开(公告)号：EP1787398B1

公开(公告)日：2011-11-02

申请号：EP05798668.9

申请日：2005-09-08

Applicant: Cisco Technology, Inc.

Inventor： JIN, Hang ,  GRABNER, John ,  HUANG, Jun ,  HO, Daniel, Wee, Teck.

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03G3/3052 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/706

Abstract: The present invention discloses a proactive gain control system (200) for a communications receiver. The proactive gain control system (200) includes a variable gain module (220) for outputting an output signal in response to an input signal. A detector (204) detects the output signal and outputs a detection signal representing a signal strength of the output signal. A traffic monitor (206) monitors the output signal and outputs a traffic profile signal indicating that a traffic profile for the input signal will change. A gain computing module (208) outputs a gain adjustment value in response to the detection signal and the traffic profile signal. A gain control module (210) outputs a gain control signal to the variable gain module (220), which determines a gain between the input and output signals, in response to the gain adjustment value.

公开(公告)号：EP1787398A4

公开(公告)日：2009-06-03

申请号：EP05798668

申请日：2005-09-08

Applicant: CISCO TECH INC

Inventor： JIN HANG ,  GRABNER JOHN ,  HUANG JUN ,  HO DANIEL WEE TECK

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03G3/3052 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/706

Abstract: The present invention discloses a proactive gain control system for a communications receiver. The proactive gain control system includes a variable gain module for outputting an output signal in response to an input signal. A detector detects the output signal and outputs a detection signal representing a signal strength of the output signal. A traffic monitor monitors the output signal and outputs a traffic profile signal indicating that a traffic profile for the input signal will change. A gain computing module outputs a gain adjustment value in response to the detection signal and the traffic profile signal. A gain control module outputs a gain control signal to the variable gain module, which determines a gain between the input and output signals, in response to the gain adjustment value.

公开(公告)号：EP1679792B1

公开(公告)日：2014-11-12

申请号：EP05251659.8

申请日：2005-03-18

Applicant: Zoran Corporation

Inventor： Hennig, Andreas G.

IPC: H03G3/30

CPC classification number: H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/706

公开(公告)号：EP1583232A3

公开(公告)日：2007-07-18

申请号：EP05090077.8

申请日：2005-03-29

Applicant: NEC CORPORATION

Inventor： Ishihara, Takeshi, c/o NEC Corporation

IPC: H03G3/30 ,  H04B7/005

CPC classification number: H04W52/22 ,  H03G3/3068 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/702 ,  H03M1/122 ,  H03M1/18 ,  H03M1/183

Abstract: An automatic gain control device includes an amplifier for a reception signal, a signal processing unit, a memory, and a control unit. The amplifier can set a gain. The signal processing unit extracts control data from an output from the amplifier and performs information processing for the data. The memory stores the gain setting value of the amplifier. The control unit controls the gain of the amplifier in accordance with a preset control algorithm. On the basis of the result obtained when the control unit computes a gain setting value stored in the memory in accordance with a preset algorithm, the control unit controls the gain of the amplifier in correspondence with operation of switching the frequency of a reception signal, which is accompanied by different frequency monitoring in the compressed mode by the signal processing unit. A radio communication terminal, a control method for an automatic gain control device, a control program for an automatic gain control device, an automatic gain control method, a radio communication system, and a radio communication method are also disclosed.

Abstract translation: 一种自动增益控制装置，包括用于接收信号的放大器，信号处理单元，存储器和控制单元。 放大器可以设置增益。 信号处理单元从放大器的输出提取控制数据，并执行数据的信息处理。 存储器存储放大器的增益设定值。 控制单元根据预设的控制算法控制放大器的增益。 基于当控制单元根据预设算法计算存储在存储器中的增益设定值时获得的结果，控制单元根据接收信号的频率切换的操作来控制放大器的增益，其中 伴随着信号处理单元在压缩模式下的不同频率监视。 还公开了无线电通信终端，自动增益控制装置的控制方法，自动增益控制装置的控制程序，自动增益控制方法，无线电通信系统和无线电通信方法。

公开(公告)号：EP1679792A3

公开(公告)日：2006-11-22

申请号：EP05251659.8

申请日：2005-03-18

Applicant: Microtune (Texas) L.P.

Inventor： Hennig, Andreas G.

IPC: H03G3/30

CPC classification number: H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/706

Abstract: A receiver for processing a signal comprises a first amplifier circuit and a second amplifier circuit. The first amplifier circuit is operated in association with a first gain profile. The second amplifier circuit is operated in association with a second gain profile. The receiver further comprises a gain control circuit that determines a quality indicator associated with a modulated signal. The gain control circuit adjusts the first gain profile and the second gain profile based at least in part upon the determined quality indicator.

Abstract translation: 用于处理信号的接收器包括第一放大器电路和第二放大器电路。 第一放大器电路与第一增益分布相关联地操作。 第二放大器电路与第二增益分布相关联地操作。 接收器还包括确定与调制信号相关联的质量指示符的增益控制电路。 增益控制电路至少部分地基于所确定的质量指标来调整第一增益曲线和第二增益曲线。

公开(公告)号：EP1584169A4

公开(公告)日：2006-08-02

申请号：EP04703677

申请日：2004-01-20

Applicant: THOMSON LICENSING

Inventor： BOUILLET AARON ,  MAYER MATTHEW

IPC: H03G3/30 ,  H04L27/08

CPC classification number: H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307

Abstract: A method and apparatus for generating the adaptive gain control signals in a communications receiver is disclosed. The present invention can be used with existing two-stage gain architectures, and overcomes many undesirable characteristics of the previous mechanism. An apparatus is presented wherein each of a plurality of RF AGC gain controllable amplifiers (140 and 150) are individually controlled by individual AGC control signals generated by an AGC controller (105) so that the level of the output signal from each of the RF AGC gain controllable amplifiers is individually optimized for tuner performance (170 and 190).