中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

26 records (took 0.024 seconds)

    Apparatus, systems and methods utilizing adjacent-channel power dependent automatic gain control for digital television demodulation
    1.
    发明专利
    Apparatus, systems and methods utilizing adjacent-channel power dependent automatic gain control for digital television demodulation 有权
    用于数字电视解调的附加通道功率依赖自动增益控制的装置，系统和方法

    公开(公告)号：JP2012175701A

    公开(公告)日：2012-09-10

    申请号：JP2012002111

    申请日：2012-01-10

    Applicant: Intel Corp ,  インテル・コーポレーション

    Inventor： PARVEEN K SHUKLA ,  ARAMBEPOLA BERNARD ,  HEWAVITANA THYSHARA ,  SAHAN S GAMAGE

    IPC: H03G3/20 ,  H04N5/52

    CPC classification number: H04N5/455 ,  H04N5/52 ,  H04N21/4382 ,  H04N21/6112

    Abstract: PROBLEM TO BE SOLVED: To provide a method for digital television demodulation, comprising using adjacent-channel power dependent automatic gain control (AGC) for the digital television demodulation, taking into account a total power as well as power of adjacent channels to control gain of a gain control amplifier.SOLUTION: An automatic gain control circuit 200 has two inputs. A first input is a power level 235 at an output of an ADC 215. A second input 240 is a power level of adjacent channels only. At 240, adjacent channel interference power rations are calculated.

    Abstract translation: 要解决的问题：提供一种用于数字电视解调的方法，包括对数字电视解调使用相邻信道功率自相关的自动增益控制（AGC），同时考虑到相邻信道的总功率和功率 增益控制放大器的控制增益。 解决方案：自动增益控制电路200具有两个输入。 第一输入是ADC 215的输出处的功率电平235.第二输入240仅是相邻通道的功率电平。 在240处，计算相邻信道干扰功率比。 版权所有（C）2012，JPO＆INPIT

    Method and system for ofdm symbol timing recovery
    2.
    发明专利
    Method and system for ofdm symbol timing recovery 有权
    OFDM符号时序恢复的方法和系统

    公开(公告)号：JP2010158027A

    公开(公告)日：2010-07-15

    申请号：JP2010000270

    申请日：2010-01-04

    Applicant: Intel Corp ,  インテル・コーポレーション

    Inventor： HEWAVITHANA THUSHARA ,  ARAMBEPOLA BERNARD ,  SHUKLA PARVEEN

    IPC: H04J11/00

    CPC classification number: H04L27/2691 ,  H04L25/0212 ,  H04L25/03057 ,  H04L27/2665 ,  H04L27/2695

    Abstract: PROBLEM TO BE SOLVED: To provide an OFDM symbol timing recovery method and system for determining a trigger point optimal for a symbol timing recovery module of an OFDM receiver to perform a discrete Fourier transform in a manner that minimizes intersymbol interference. SOLUTION: The method includes the steps of: receiving from a communication channel, an OFDM symbol in which a guard interval of a length Tg is inserted between OFDM symbols; starting a discrete Fourier transform from a specific trigger point for N pieces of continuous samples and demodulating the OFDM symbol; calculating a channel frequency response; and adjusting the trigger point of the discrete Fourier transform. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种OFDM符号定时恢复方法和系统，用于确定OFDM接收机的符号定时恢复模块最佳的触发点，以使符号间干扰最小化的方式执行离散傅里叶变换。 解决方案：该方法包括以下步骤：从通信信道接收在OFDM符号之间插入长度为Tg的保护间隔的OFDM符号; 从N个连续样本的特定触发点开始离散傅立叶变换并解调OFDM符号; 计算频道频率响应; 并调整离散傅里叶变换的触发点。 版权所有（C）2010，JPO＆INPIT

    Method and system to estimate channel frequency response in multi-carrier signal
    3.
    发明专利
    Method and system to estimate channel frequency response in multi-carrier signal 有权
    在多载波信号中估计频道响应的方法和系统

    公开(公告)号：JP2010158003A

    公开(公告)日：2010-07-15

    申请号：JP2009283671

    申请日：2009-12-15

    Applicant: Intel Corp ,  インテル・コーポレーション

    Inventor： ARAMBEPOLA BERNARD ,  SHUKLA PARVEEN ,  HEWAVITHANA THUSHARA

    IPC: H04J11/00 ,  H04B1/10

    CPC classification number: H04L25/022 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0232

    Abstract: PROBLEM TO BE SOLVED: To provide a method and a system to determine a channel frequency response corresponding to a multi-carrier signal such as an OFDM signal.
    SOLUTION: A pilot signal or an OFDM signal having a pilot is received. A channel frequency response of a pilot carrier frequency is determined from the pilot. Band-pass-filtering/masking is performed on noise in the channel frequency in the time domain to convert the filtered/masked channel frequency response to the frequency domain, The filtered/masked channel frequency response is frequency-interpolated to generate a channel response for a remaining carrier frequency.
    COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种方法和系统来确定对应于诸如OFDM信号的多载波信号的信道频率响应。 解决方案：接收具有导频的导频信号或OFDM信号。 从导频确定导频载波频率的信道频率响应。 对时域中的信道频率的噪声进行带通滤波/掩蔽，以将滤波/屏蔽的信道频率响应转换为频域。经滤波/屏蔽的信道频率响应被频率插值以产生信道响应 剩余载波频率。 版权所有（C）2010，JPO＆INPIT

    METHODS AND SYSTEMS TO RESOLVE CYCLIC AMBIGUITY OF A CHANNEL IMPULSE RESPONSE
    5.
    发明申请
    METHODS AND SYSTEMS TO RESOLVE CYCLIC AMBIGUITY OF A CHANNEL IMPULSE RESPONSE 审中-公开
    解决通道冲动响应循环利用的方法和系统

    公开(公告)号：WO2012027061A3

    公开(公告)日：2012-04-19

    申请号：PCT/US2011045775

    申请日：2011-07-28

    Applicant: INTEL CORP ,  HEWAVITHANA THUSHARA ,  ARAMBEPOLA BERNARD ,  SHUKLA PARVEEN K ,  GAMAGE SAHAN S ,  BHUNJUN VINESH

    Inventor： HEWAVITHANA THUSHARA ,  ARAMBEPOLA BERNARD ,  SHUKLA PARVEEN K ,  GAMAGE SAHAN S ,  BHUNJUN VINESH

    IPC: H04L27/26

    CPC classification number: H04L25/022 ,  H04L25/0212 ,  H04L25/0228 ,  H04L27/2647

    Abstract: Methods and systems to resolve cyclic ambiguity of a scattered-pilot based channel impulse response as a function of transmission parameter signalling (TPS), such as in a single frequency network, including to zero-pad a first orientation of the channel impulse response to an interval of an effective symbol duration of the multi-carrier signal, compute a channel frequency response from the zero-padded first orientation of the channel impulse response, and correlate components of the channel frequency response corresponding to frequencies of TPS carriers with raw channel frequency response data of obtained from the TPS carriers. Frequency response components of multiple zero-padded orientations of the channel impulse response may be correlated with the raw TPS carrier data to identify an optimum orientation of the channel impulse response. Frequency response components of subsequent zero-padded orientations may be iteratively computed from components of preceding orientations.

    Abstract translation: 解决作为传输参数信令（TPS）的函数的基于分散导频的信道脉冲响应的循环模糊度的方法和系统，诸如在单个频率网络中，包括将信道脉冲响应的第一取向零填补到 多载波信号的有效符号持续时间的间隔，从信道脉冲响应的零填充的第一取向计算信道频率响应，并且将与TPS载波的频率相对应的信道频率响应的分量与原始信道频率响应相关联 从TPS载体获得的数据。 信道脉冲响应的多个零填充取向的频率响应分量可以与原始TPS载波数据相关，以识别信道脉冲响应的最佳取向。 随后的零填充取向的频率响应分量可以从先前方向的分量迭代计算。

    CHANNEL-ADAPTIVE LIKELIHOOD DETERMINATION
    8.
    发明申请
    CHANNEL-ADAPTIVE LIKELIHOOD DETERMINATION 审中-公开
    通道适应性似然分析

    公开(公告)号：WO2012027303A3

    公开(公告)日：2012-04-19

    申请号：PCT/US2011048699

    申请日：2011-08-22

    Applicant: INTEL CORP ,  GAMAGE SAHAN S ,  ARAMBEPOLA BERNARD ,  HEWAVITHANA THUSHARA ,  SHUKLA PARVEEN K ,  BHUNJUN VINESH

    Inventor： GAMAGE SAHAN S ,  ARAMBEPOLA BERNARD ,  HEWAVITHANA THUSHARA ,  SHUKLA PARVEEN K ,  BHUNJUN VINESH

    IPC: H04L27/26

    CPC classification number: H04L25/067

    Abstract: Methods and systems to compute likelihood measures of demodulated, complex-coordinate data points, to and dynamically scale the likelihood measures as a function of a channel statistic, and to decode the data points from the scaled likelihood measures. Likelihood measures may be computed relative to all points, or a subset of points of a reference constellation, such as a subset of one or more nearest constellation points. Likelihood measures may be scaled as a function of a channel frequency response variance amongst a plurality of carriers, such as carriers of an OFDM signal, and/or as a function of a channel impulse response variance.

    Abstract translation: 用于计算解调的复数坐标数据点的似然度量的方法和系统，以及根据信道统计量动态缩放似然度量，并且从缩放似然度量中解码数据点。 可以相对于所有点或者参考星座的点的子集（诸如一个或多个最接近的星座点的子集）来计算可能性度量。 可能性度量可以根据多个载波（诸如OFDM信号的载波）之中的信道频率响应方差和/或作为信道脉冲响应方差的函数来缩放。

    PHASE ERROR DETECTION WITH CONDITIONAL PROBABILITIES
    9.
    发明申请
    PHASE ERROR DETECTION WITH CONDITIONAL PROBABILITIES 审中-公开
    带有条件概率的相位误差检测

    公开(公告)号：WO2010078213A3

    公开(公告)日：2010-09-23

    申请号：PCT/US2009069508

    申请日：2009-12-23

    Applicant: INTEL CORP ,  HEWAVITHANA THUSHARA ,  ARAMBEPOLA BERNARD ,  SHUKLA PARVEEN ,  GAMAGE SAHAN ,  BHUNJUN VINESH

    Inventor： HEWAVITHANA THUSHARA ,  ARAMBEPOLA BERNARD ,  SHUKLA PARVEEN ,  GAMAGE SAHAN ,  BHUNJUN VINESH

    IPC: H04B7/005 ,  H04L27/18

    CPC classification number: H04L27/3827 ,  H04L27/2273 ,  H04L2027/003 ,  H04L2027/0036 ,  H04L2027/0038 ,  H04L2027/0057 ,  H04L2027/0067 ,  H04L2027/0069

    Abstract: Apparatuses, systems, and methods that employ conditional probabilities to calculate phase errors are disclosed. For a received signal, the embodiments may develop several phase error estimates relative to each point of a constellation, the number and location of points of the constellation depending on the modulation technique of the received signal. In addition to calculating the phase error estimates, the embodiments may also calculate weights, or probabilities, associated with each of the estimates. The embodiments may use the estimates and the weights to calculate a composite phase error estimate. The composite phase error estimate may be used to correct the received signal and eliminate or reduce the impact of the phase error.

    Abstract translation: 公开了采用条件概率来计算相位误差的设备，系统和方法。 对于接收到的信号，实施例可以相对于星座的每个点产生多个相位误差估计，星座的点的数量和位置取决于接收到的信号的调制技术。 除了计算相位误差估计之外，实施例还可以计算与每个估计相关联的权重或概率。 实施例可以使用估计和权重来计算合成相位误差估计。 复合相位误差估计可用于校正接收到的信号并消除或减小相位误差的影响。

Patent Agency Ranking