中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

112 records (took 0.032 seconds)

    System and method for improving narrowband interference performance
    72.
    发明授权
    System and method for improving narrowband interference performance 有权

    公开(公告)号：US09780819B2

    公开(公告)日：2017-10-03

    申请号：US15061301

    申请日：2016-03-04

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Tarkesh Pande ,  Anuj Batra ,  Il Han Kim

    IPC: H04B1/10 ,  H04L5/00

    CPC classification number: H04J11/0066 ,  H04L25/03821 ,  H04L27/2647

    Abstract: An orthogonal frequency division multiplexing (OFDM) receiver includes detection logic, offset generation logic, tone erasure logic, and correction generation logic. The detection logic is configured to detect a signal containing a block of samples that includes a narrowband interferer from a communication channel. The offset generation logic is configured to align a frequency of the narrowband interferer to a center of a subcarrier frequency of the communication channel to produce an offset signal thereby introducing inter-carrier interference (ICI). The tone erasure logic is configured to remove the subcarrier frequency from the offset signal to produce an interferer erased offset signal. The correction generation logic is configured to remove the ICI to produce an interferer erased signal.

    Time-domain windowing function
    77.
    发明授权
    Time-domain windowing function 有权
    时域窗口功能

    公开(公告)号：US09461861B2

    公开(公告)日：2016-10-04

    申请号：US14048411

    申请日：2013-10-08

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Anuj Batra ,  Timothy Mark Schmidl ,  Il Han Kim

    IPC: H04L25/49 ,  H04L27/26 ,  H04B3/54 ,  H04L25/03

    CPC classification number: H04L27/2634 ,  H04B3/542 ,  H04B2203/5433 ,  H04L25/03834

    Abstract: A smart utility network (SUN) device that includes an orthogonal frequency-division multiplexing (OFDM)-based transmitter. The OFDM-based transmitter including a signal processor to convert data from a frequency-domain to a time-domain using an inverse fast Fourier transform (IFFT) and configured to perform a time-domain windowing function based on a Hanning window on OFDM symbols.

    Abstract translation: 一种智能公用事业网络（SUN）装置，其包括基于正交频分复用（OFDM）的发射机。 基于OFDM的发射机包括信号处理器，用于使用逆快速傅里叶变换（IFFT）将数据从频域转换到时域，并被配置为基于OFDM符号上的汉宁窗执行时域加窗函数。

    SNR calculation in impulsive noise and erasure channels
    78.
    发明授权
    SNR calculation in impulsive noise and erasure channels 有权
    脉冲噪声和擦除通道中的SNR计算

    公开(公告)号：US09413423B1

    公开(公告)日：2016-08-09

    申请号：US14829615

    申请日：2015-08-18

    Applicant: Texas Instruments Incorporated

    Inventor： Tarkesh Pande ,  Anuj Batra ,  IL Han Kim

    IPC: H04B17/00 ,  H04B3/46 ,  H04B3/54 ,  H04L1/00

    CPC classification number: H04B3/46 ,  H04B3/54 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/20

    Abstract: A device coupled to a noisy channel having periodic impulse noise in a network may estimate an effective signal to noise ratio (SNR) by receiving a packet of symbols. The device may determined a number of bad symbols N(bad) ratio in the packet due to interference and a remaining plurality of good symbols in the packet. An SNR value may be computed based on only the plurality of good symbols in the packet of symbols to form an SNR(good) value. An SNR correction value (SNR(offset)) may be determined as a function of the N(bad) ratio and the SNR(good) value. An effective SNR value may then be calculated by adjusting the SNR(good) value according to SNR(offset).

    Abstract translation: 耦合到在网络中具有周期性脉冲噪声的噪声信道的设备可以通过接收符号分组来估计有效的信噪比（SNR）。 设备可以确定由于干扰而导致的分组中的不良符号N（不良）比率的数量以及分组中剩余的多个好的符号。 可以仅基于符号分组中的多个良好符号来计算SNR值，以形成SNR（良好）值。 可以将SNR校正值（SNR（偏移））确定为N（差）比和SNR（良好）值的函数。 然后可以通过根据SNR（偏移）调整SNR（良好）值来计算有效SNR值。

    POWER LINE COMMUNICATION OPERATING FREQUENCY BAND SELECTION APPARATUS, SYSTEMS AND METHODS
    79.
    发明申请
    POWER LINE COMMUNICATION OPERATING FREQUENCY BAND SELECTION APPARATUS, SYSTEMS AND METHODS 有权
    电力线通信工作频段选择装置，系统和方法

    公开(公告)号：US20160127056A1

    公开(公告)日：2016-05-05

    申请号：US14885715

    申请日：2015-10-16

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Mehul Soman ,  Tarkesh Pande ,  Il Han Kim ,  Anuj Batra ,  Minghua Fu

    IPC: H04B17/336 ,  H04L1/00 ,  H04L27/00 ,  H04L27/26 ,  H04B3/54

    CPC classification number: H04L1/0045 ,  H04B3/54 ,  H04L1/004 ,  H04L27/0002 ,  H04L27/2602

    Abstract: A band of interest is divided into band segments. A scan frame is sent by a transmitter at a transmitting PLC node across each band segment. A receiver at a receiving node scans the band segments, listening for the scan frame. Upon detecting a scan frame, the receiving node measures the signal quality of each OFDM subcarrier modulated with symbols from the scan frame. The subcarrier signal quality values are stored in a table. Upon completion of the scan process, the table contains a signal quality value for each subcarrier within the band of interest. The table is then analyzed to find an operating band consisting of subcarriers with a highest average signal quality or a band that results in greater than a pre-determined minimum signal quality. The invented methods and embodiments may operate periodically to readjust the operating band configuration in the presence of electromagnetic interference including time-variant interference.

    Abstract translation: 感兴趣的乐队分为乐队段。 扫描帧由发射机在每个频段的发送PLC节点发送。 在接收节点处的接收机扫描带段，监听扫描帧。 在检测到扫描帧时，接收节点测量利用来自扫描帧的符号调制的每个OFDM副载波的信号质量。 子载波信号质量值存储在表中。 扫描过程完成后，该表包含感兴趣的频带内每个子载波的信号质量值。 然后分析表以找到由具有最高平均信号质量的子载波组成的操作频带或导致大于预定的最小信号质量的频带。 本发明的方法和实施例可以周期性地操作以在存在包括时变干扰的电磁干扰的情况下重新调整工作频带配置。

Patent Agency Ranking