公开(公告)号：US08301097B2

公开(公告)日：2012-10-30

申请号：US12115263

申请日：2008-05-05

Applicant: Hooman Darabi ,  Henrik T. Jensen ,  Brima Ibrahim

Inventor： Hooman Darabi ,  Henrik T. Jensen ,  Brima Ibrahim

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03G1/007 ,  H03G3/3063 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/307

Abstract: A method for processing a plurality of signals may include amplifying an input signal and generating a wideband signal from the amplified input signal. The method may further include bandpass filtering the generated wideband signal to generate a narrowband signal, and adjusting amplification of the input signal based on a narrowband received signal strength indication of the generated narrowband signal, and/or a wideband received signal strength indication of the generated wideband signal. The amplified input signal may be downconverted to generate the wideband signal. The amplified input signal may be downconverted to an intermediate frequency (IF) and/or to a baseband signal to generate the wideband signal. At least one blocker signal may be bandpass filtered from the amplified input signal.

Abstract translation: 用于处理多个信号的方法可以包括放大输入信号并从放大的输入信号产生宽带信号。 该方法还可以包括对生成的宽带信号进行带通滤波以产生窄带信号，以及基于所生成的窄带信号的窄带接收信号强度指示和/或所生成的宽带信号强度指示来调整输入信号的放大 宽带信号。 放大的输入信号可以被下变频以产生宽带信号。 放大的输入信号可以下变频到中频（IF）和/或基带信号以产生宽带信号。 至少一个阻塞信号可以从放大的输入信号进行带通滤波。

公开(公告)号：US07593705B2

公开(公告)日：2009-09-22

申请号：US11287787

申请日：2005-11-28

Applicant: Tadahiro Sato ,  Akifumi Adachi

Inventor： Tadahiro Sato ,  Akifumi Adachi

IPC: H04B1/06 ,  H04Q7/20

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 radio receiver includes a branching unit, a first gain-control system, a second-gain control system, and a signal processing unit. The branching unit branches a radio signal received by the radio receiver into two signals. The first-gain control system performs a gain control of a pilot signal in one of branched signals, and the second gain control system performs a gain control of a data signal in another of the branched signals. The signal processing unit synchronizes frames in the received radio signal. The signal processing unit outputs a gain signal to each of the first gain-control system and the second gain-control system. The first gain-control system and the second gain-control system perform the gain controls based on the gain signal.

Abstract translation: 无线电接收机包括分支单元，第一增益控制系统，第二增益控制系统和信号处理单元。 分支单元将由无线电接收机接收的无线电信号分成两个信号。 第一增益控制系统以分支信号之一对导频信号进行增益控制，第二增益控制系统对分支信号中的另一个进行数据信号的增益控制。 信号处理单元同步所接收的无线电信号中的帧。 信号处理单元向第一增益控制系统和第二增益控制系统中的每一个输出增益信号。 第一增益控制系统和第二增益控制系统基于增益信号执行增益控制。

公开(公告)号：US07460623B1

公开(公告)日：2008-12-02

申请号：US10360834

申请日：2003-02-06

Applicant: Vladimir Radionov ,  Ryan Yu

Inventor： Vladimir Radionov ,  Ryan Yu

IPC: H04L27/08

CPC classification number: H03G3/3089 ,  H03G2201/202 ,  H03G2201/302

Abstract: A digital automatic gain control circuit is disclosed. The circuit includes a selector, a scaler, a detector, a gain adjustor and a controller. In one exemplary aspect, the selector receives an input signal having two components, namely, the in-phase (I) and quadrature (Q) components, in digital form. The selector then selects a subset of bits from each component based on a control signal provided by the controller. The two subsets are then forwarded to the scaler. The scaler then multiplies the two subsets respectively against a gain value to generate two multiplication results. A portion of each multiplication result is then provided as output by the scaler. The gain value and the subset selection are periodically adjusted in response to the scaler output. The adjustments with respect to the gain value and the subset selection are effectuated collectively by the detector, the gain adjustor and the controller.

Abstract translation: 公开了一种数字自动增益控制电路。 该电路包括选择器，定标器，检测器，增益调节器和控制器。 在一个示例性方面，选择器以数字形式接收具有两个分量的输入信号，即同相（I）和正交（Q）分量。 然后，选择器基于由控制器提供的控制信号从每个分量中选择一个比特的子集。 然后将两个子集转发到缩放器。 缩放器然后将两个子集分别乘以增益值以生成两个相乘结果。 然后将每个乘法结果的一部分作为缩放器的输出提供。 响应于缩放器输出周期性地调整增益值和子集选择。 相对于增益值和子集选择的调整由检测器，增益调节器和控制器共同实现。

公开(公告)号：US20070230635A1

公开(公告)日：2007-10-04

申请号：US11278527

申请日：2006-04-03

Applicant: Leif Wilhelmsson ,  Jim Svensson ,  Lars Sundstrom

Inventor： Leif Wilhelmsson ,  Jim Svensson ,  Lars Sundstrom

IPC: H04L27/08 ,  H04K1/10

CPC classification number: H04L27/2647 ,  H03G3/3052 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H04L25/0202 ,  H04L27/2607

Abstract: In communication systems where the channel is expected to vary during a communication burst, gain adjustments during the communication burst can be implemented by automatic gain control (AGC) in the receiver, with minimal performance degradation. These gain adjustments are successfully accommodated by virtue of suitable information-sharing between an AGC unit and a digital baseband part. The digital baseband part can direct the AGC unit appropriately to ensure that gain adjustments are implemented during time intervals that do not carry substantive communication information (e.g., guard intervals). In receivers that perform channel estimation in the digital baseband part, the AGC unit supports channel estimation by informing the digital baseband part about the timing of the gain adjustment. The AGC unit can also support channel estimation by informing the digital baseband part about the size of the gain adjustment.

Abstract translation: 在通信期望信道在通信突发期间变化的通信系统中，通信突发期间的增益调整可以通过接收机中的自动增益控制（AGC）来实现，性能下降最小。 通过AGC单元和数字基带部分之间的合适的信息共享，可以成功地适应这些增益调整。 数字基带部分可以适当地引导AGC单元，以确保在不携带实质性通信信息（例如，保护间隔）的时间间隔期间实现增益调整。 在数字基带部分进行信道估计的接收机中，AGC单元通过向数字基带部分通知增益调整的定时来支持信道估计。 AGC单元还可以通过向数字基带部分通知增益调整的大小来支持信道估计。

公开(公告)号：US07257379B2

公开(公告)日：2007-08-14

申请号：US10713613

申请日：2003-11-14

Applicant: Fatih Ozluturk ,  Leonid Kazakevich ,  Kenneth P. Kearney ,  Geetha Lakshmi Narayan ,  Alpaslan Demir ,  Tanbir Haque

Inventor： Fatih Ozluturk ,  Leonid Kazakevich ,  Kenneth P. Kearney ,  Geetha Lakshmi Narayan ,  Alpaslan Demir ,  Tanbir Haque

IPC: H04B1/38

CPC classification number: H03G3/001 ,  H03D3/008 ,  H03D3/009 ,  H03G3/3068 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307 ,  H03G2201/508 ,  H04B1/30 ,  H04L2027/0016 ,  H04L2027/0024

Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component tolerances of an analog radio, a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing (DSP) techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (AGC) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency (RF) parameters.

Abstract translation: 为了补偿由模拟无线电的低成本模拟无线电组件公差引起的性能下降，未来的系统架构（FSA）无线通信收发器采用多种数字信号处理（DSP）技术来补偿这种模拟组件的缺陷， 现代规格可能放宽。 在数字域中提供自动增益控制（AGC）功能，以提供增强的相位和幅度补偿以及许多其他射频（RF）参数。

公开(公告)号：WO2005011165A1

公开(公告)日：2005-02-03

申请号：PCT/JP2003/009484

申请日：2003-07-25

Applicant: 富士通株式会社 ,  佐藤 忠弘 ,  安達 明文

Inventor： 佐藤 忠弘 ,  安達 明文

IPC: H04J3/00

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

Abstract: 　受信したフレームは、共通パイロット信号の利得制御系統（２０Ａ）と、個別のデータ信号の利得制御系統（２０Ｂ）に２分岐される。利得制御系統（２０Ａ）は、共通パイロット信号の利得を利得制御し、利得制御系統（２０Ｂ）は、データ信号の利得を利得制御する。信号処理部（３０）は、フレームの同期をとり、共通パイロット信号の利得が一定となる利得制御信号（ｇ１）を共通パイロット信号の利得制御回路（２１ａ）に出力し、また、データ信号の利得が一定となる利得制御信号（ｇ２）をデータ信号の利得制御回路（２１ｂ）に出力する。利得が一定に制御されることにより、ＡＤＣ（２６ａ，２６ｂ，２７ａ，２７ｂ）の飽和やＳ／Ｎ劣化を防ぐ。

Abstract translation: 接收的帧被分支到公共导频信号增益控制系统（20A）和单个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）与帧执行同步，输出用于使公共导频信号的增益恒定的公共导频信号增益控制电路（21a）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，因此可以防止ADC（26a，26b，27a，27b）的饱和和S / N劣化。

公开(公告)号：WO2004047411A1

公开(公告)日：2004-06-03

申请号：PCT/US2003/036129

申请日：2003-11-14

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： OZLUTURK, Fatih ,  KAZAKEVICH, Leonid ,  HAQUE, Tanbir ,  DEMIR, Alpaslan ,  NARAYAN, Geetha, Lakshmi ,  KEARNEY, Kenneth

IPC: H04M1/00

CPC classification number: H03G3/001 ,  H03D3/008 ,  H03D3/009 ,  H03G3/3068 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307 ,  H03G2201/508 ,  H04B1/30 ,  H04L2027/0016 ,  H04L2027/0024

Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component (105) tolerances of an analog radio (100), a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (110) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency parameters.

Abstract translation: 为了补偿由模拟无线电（100）的低成本模拟无线电组件（105）容差导致的性能下降，未来的系统架构（FSA）无线通信收发机采用多种数字信号处理技术来补偿这样的缺陷 模拟组件，使现代规格可以放松。 在数字域中提供自动增益控制（110）功能，以提供增强的相位和幅度补偿以及许多其他射频参数。

公开(公告)号：NO20052740A

公开(公告)日：2005-07-12

申请号：NO20052740

申请日：2005-06-08

Applicant: INTERDIGITAL TECH CORP

Inventor： KAZAKEVICH LEONID ,  OZLUTURK FATIH M ,  KEARNEY KENNETH P ,  HAQUE TANBIR ,  DEMIR ALPASLAN ,  NARAYAN GEETHA LAKSHMI

IPC: H03D3/00 ,  H03G3/00 ,  H03G3/30 ,  H04B1/30 ,  H04L27/00 ,  H04B17/00 ,  H04B7/005

CPC classification number: H03G3/001 ,  H03D3/008 ,  H03D3/009 ,  H03G3/3068 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307 ,  H03G2201/508 ,  H04B1/30 ,  H04L2027/0016 ,  H04L2027/0024

公开(公告)号：US20120129478A1

公开(公告)日：2012-05-24

申请号：US13299581

申请日：2011-11-18

Applicant: Henk Ten Pierick ,  Gertjan Groot Hulze ,  Erik Keukens

Inventor： Henk Ten Pierick ,  Gertjan Groot Hulze ,  Erik Keukens

IPC: H04B1/16 ,  H03G3/20

CPC classification number: H03G3/3052 ,  H03G3/301 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/606

Abstract: An automatic gain control circuit is provided for an input signal in the form of a dc reference level and a superposed amplitude modulated ac data signal. A feedforward AGC loop has a low pass filter for deriving the level of attenuation from the attenuated dc reference level. A multiplier value (G) is based on the reciprocal of the level of attenuation (α) and this multiplier enables an output signal to be generated comprising a constant multiple (DG) of the input signal.

Abstract translation: 为直流基准电平和重叠幅度调制交流数据信号形式的输入信号提供自动增益控制电路。 前馈AGC环路具有用于从衰减的直流参考电平导出衰减电平的低通滤波器。 乘法器值（G）基于衰减电平（α）的倒数，并且该乘法器使得能够产生包括输入信号的恒定倍数（DG）的输出信号。

公开(公告)号：US07991087B2

公开(公告)日：2011-08-02

申请号：US12651178

申请日：2009-12-31

Applicant: Jeffrey Paul Solum

Inventor： Jeffrey Paul Solum

IPC: H04L27/08

CPC classification number: H04B1/1027 ,  H03G3/3052 ,  H03G2201/202 ,  H03G2201/206 ,  H04B1/109 ,  H04L27/3809

Abstract: One embodiment of the present subject matter includes a method of receiving an input signal. The method, in various embodiments, includes detecting a peak of the input signal and detecting an envelope of the input signal. In various embodiments, the peak and envelope are used to identify out-of-band blocking signals and to adjust gain control. The method also includes comparing the peak to a first threshold Tp and comparing the envelope to a second threshold Te. In the method, if the peak is above the first threshold and the envelope is below the second threshold, then ignoring the input signal. If the envelope is above the second threshold, the method includes applying automatic gain control to decode information encoded in the input signal.

Abstract translation: 本主题的一个实施例包括接收输入信号的方法。 在各种实施例中，该方法包括检测输入信号的峰值并检测输入信号的包络。 在各种实施例中，峰值和包络用于识别带外阻塞信号并调整增益控制。 该方法还包括将峰值与第一阈值Tp进行比较并将包络与第二阈值Te进行比较。 在该方法中，如果峰值高于第一阈值并且包络低于第二阈值，则忽略输入信号。 如果信封高于第二阈值，则该方法包括应用自动增益控制来对输入信号中编码的信息进行解码。