中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

75 records (took 0.019 seconds)

    APPARATUS AND METHOD FOR SUPPORTING POLAR CODE DESIGNS
    21.
    发明申请
    APPARATUS AND METHOD FOR SUPPORTING POLAR CODE DESIGNS 有权
    支持极性代码设计的装置和方法

    公开(公告)号：US20150092886A1

    公开(公告)日：2015-04-02

    申请号：US14503513

    申请日：2014-10-01

    Applicant: Texas Instruments Incorporated

    Inventor： Corina Ioana Ionita ,  June Chul Roh ,  Mohamed F. Mansour ,  Srinath Hosur

    IPC: H04L27/36

    CPC classification number: H03M5/18 ,  H03M13/13 ,  H03M13/152 ,  H03M13/251 ,  H03M13/255 ,  H03M13/2792 ,  H04L1/0041 ,  H04L1/0058 ,  H04L25/4917 ,  H04L27/36 ,  H04L27/364

    Abstract: A method includes simulating transmission of multiple symbols representing multiple bits over at least one communication channel, where the multiple symbols are associated with a polar code. The method also includes identifying error rates of equivalent bit channels associated with the simulated transmission of the symbols. The method further includes selecting a specified number of the bits as frozen bits in the polar code using the identified error rates. Simulating the transmission of the symbols could include computing log likelihood ratio (LLR) values associated with the equivalent bit channels and simulating polar decoding of received symbols using the LLR values. Identifying the error rates could include calculating means and variances of the LLR values associated with the equivalent bit channels and identifying probability density functions of the LLR values using the means and variances. The selected bits could represent the specified number of bits identified as having worst error rates.

    Abstract translation: 一种方法包括模拟通过至少一个通信信道表示多个比特的多个符号的传输，其中多个符号与极性码相关联。 该方法还包括识别与符号的模拟传输相关联的等效比特信道的错误率。 该方法还包括使用所识别的错误率在极性码中选择指定数目的比特作为冻结比特。 模拟符号的传输可以包括与等效比特信道相关联的计算对数似然比（LLR）值，并且使用LLR值来模拟接收符号的极性解码。 识别错误率可以包括与等效位信道相关联的LLR值的计算方法和方差，并使用均值和方差来识别LLR值的概率密度函数。 所选择的比特可以表示指定的具有最差错误率的比特数。

    APPARATUS AND METHOD FOR MULTILEVEL CODING (MLC) WITH BINARY ALPHABET POLAR CODES
    22.
    发明申请
    APPARATUS AND METHOD FOR MULTILEVEL CODING (MLC) WITH BINARY ALPHABET POLAR CODES 审中-公开
    具有二进制碱性极性代码的多级编码（MLC）的装置和方法

    公开(公告)号：US20150091742A1

    公开(公告)日：2015-04-02

    申请号：US14503547

    申请日：2014-10-01

    Applicant: Texas Instruments Incorporated

    Inventor： Corina Ioana Ionita ,  June Chul Roh ,  Mohamed F. Mansour ,  Srinath Hosur

    IPC: H03M5/18 ,  H03M13/00

    CPC classification number: H03M5/18 ,  H03M13/13 ,  H03M13/152 ,  H03M13/251 ,  H03M13/255 ,  H04L1/0041 ,  H04L1/0058 ,  H04L25/4917 ,  H04L27/36 ,  H04L27/364

    Abstract: A method includes receiving multiple bits to be transmitted. The method also includes applying a first binary alphabet polar code to a first subset of the multiple bits to generate first encoded bits. The first encoded bits are associated with a first bit level of a multilevel coding scheme. The method further includes generating one or more symbols using the first encoded bits and bits associated with a second bit level of the multilevel coding scheme. The first binary alphabet polar code is associated with a first coding rate. In addition, the method could include applying a second binary alphabet polar code to a second subset of the multiple bits to generate second encoded bits. The second encoded bits are associated with the second bit level. The second binary alphabet polar code is associated with a second coding rate such that the bit levels have substantially equal error rates.

    Abstract translation: 一种方法包括接收要发送的多个比特。 该方法还包括将第一二进制字母极性码应用于多个比特的第一子集以产生第一编码比特。 第一编码比特与多级编码方案的第一比特级相关联。 该方法还包括使用与多级编码方案的第二比特级相关联的第一编码比特和比特生成一个或多个符号。 第一个二进制字母极性码与第一编码率相关联。 此外，该方法可以包括将第二二进制字母极性码应用于多个比特的第二子集以产生第二编码比特。 第二编码比特与第二比特级相关联。 第二二进制字母极性码与第二编码率相关联，使得位电平具有基本相等的误码率。

    ADDRESS SPACE PARTITIONING AND FILTERING FOR DISCRETIONARY WIRELESS CONNECTION RESPONSE
    23.
    发明申请
    ADDRESS SPACE PARTITIONING AND FILTERING FOR DISCRETIONARY WIRELESS CONNECTION RESPONSE 审中-公开
    解决无线连接响应的地址空间分配和过滤

    公开(公告)号：US20150038187A1

    公开(公告)日：2015-02-05

    申请号：US14520793

    申请日：2014-10-22

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Jin-Meng Ho ,  June Chul Roh

    IPC: H04W76/02 ,  H04W72/04

    CPC classification number: H04W76/02 ,  A61N1/37252 ,  H04W72/04 ,  H04W76/10

    Abstract: A system and method for providing wireless communications between a medical controller hub and an implant node are disclosed. The hub transmits signals to facilitate communication connections with the node. The signals include connection invitation polls with identification parameters. A node monitors the hub's transmissions for the connection invitation polls. When a poll is detected, the node compares the identification parameters to a list of preferred identification values. If the received identification parameter is on the preferred list, and the node and hub are not already connected, then the node responds to the connection invitation poll. If the received identification parameter is not on the preferred list, then the node continues to monitor hub transmissions for other connection invitation polls that include identification parameters that are on the preferred list.

    Abstract translation: 公开了一种用于在医疗控制器集线器和植入物节点之间提供无线通信的系统和方法。 集线器发送信号以促进与节点的通信连接。 信号包括带有识别参数的连接邀请轮询。 节点监视中心的传输以进行连接邀请轮询。 当检测到轮询时，节点将识别参数与首选标识值的列表进行比较。 如果接收到的标识参数在首选列表上，并且节点和集线器尚未连接，则节点响应连接邀请轮询。 如果接收到的标识参数不在优选列表上，则节点继续监视其他连接邀请轮询的集线器传输，其中包括在优选列表上的标识参数。

    Calibrating a tightly-coupled GNSS/MU integration filter
    24.
    发明授权
    Calibrating a tightly-coupled GNSS/MU integration filter 有权
    校准紧凑耦合的GNSS / MU集成滤波器

    公开(公告)号：US08914234B2

    公开(公告)日：2014-12-16

    申请号：US13901965

    申请日：2013-05-24

    Applicant: Texas Instruments Incorporated

    Inventor： June Chul Roh

    IPC: G01S1/00 ,  G01S19/47

    CPC classification number: G01S19/47

    Abstract: Embodiments of the invention provide methods of calibrating a blending filter based on extended Kalman filter (EKF), which optimally integrates the IMU navigation data with all other satellite measurements (tightly-coupled integration filter). In one embodiment a coordinate transformation matrix using a latest position fix is created. The state variables (for user velocity) are transformed to a local navigation coordinate. The state variables of said integration filter is estimated. A blended calibrated position fix is the output of the method.

    Abstract translation: 本发明的实施例提供了基于扩展卡尔曼滤波器（EKF）来校准混合滤波器的方法，其将IMU导航数据与所有其他卫星测量（紧耦合积分滤波器）进行最佳的集成。 在一个实施例中，创建使用最新位置锁定的坐标变换矩阵。 状态变量（用于用户速度）被转换为本地导航坐标。 估计所述积分滤波器的状态变量。 混合校准位置修正是该方法的输出。

    NLOS wireless backhaul downlink communication
    28.
    发明授权
    NLOS wireless backhaul downlink communication 有权

    公开(公告)号：US11601924B2

    公开(公告)日：2023-03-07

    申请号：US17135393

    申请日：2020-12-28

    Applicant: Texas Instruments Incorporated

    Inventor： June Chul Roh ,  Pierre Bertrand ,  Srinath Hosur ,  Vijay Pothukuchi ,  Mohamed Farouk Mansour

    IPC: H04W72/04 ,  H03M13/29 ,  H04L1/00 ,  H03M13/15 ,  H03M13/00 ,  H04L1/1812 ,  H04H20/38 ,  H04W72/0446

    Abstract: A method for communicating over a wireless backhaul channel comprising generating a radio frame comprising a plurality of time slots, wherein each time slot comprises a plurality of symbols in time and a plurality of sub-carriers in a system bandwidth, broadcasting a broadcast channel signal comprising a transmission schedule to a plurality of remote units in a number of consecutive sub-carriers centered about a direct current (DC) sub-carrier in at least one of the time slots in the radio frame regardless of the system bandwidth, and transmitting a downlink (DL) control channel signal and a DL data channel signal to a first of the remote units, wherein the DL data channel signal is transmitted by employing a single carrier block transmission scheme comprising a Discrete Fourier Transform (DFT) spreading for frequency diversity.

    Radar processing chain for frequency-modulated continuous wave radar systems
    29.
    发明授权
    Radar processing chain for frequency-modulated continuous wave radar systems 有权

    公开(公告)号：US11119186B2

    公开(公告)日：2021-09-14

    申请号：US16212046

    申请日：2018-12-06

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： June Chul Roh

    IPC: G01S7/295 ,  G01S7/292 ,  G01S13/536 ,  G01S13/56 ,  G01S13/42 ,  G01S7/35

    Abstract: Systems and methods are provided for a radar processing chain for frequency-modulated continuous wave radar systems. A transmitter transmits a plurality of chirps, each comprising an electromagnetic radiation signal, at a region of interest. A receiver front-end receives reflected electromagnetic radiation for each chirp and generates a time series of beat-signal samples for each chirp at each antenna of a plurality of antennas. A signal processor detects objects within the region of interest by providing a frequency domain representation of each time series of beat-signal samples as sample values for a set of range bins representing respective distances from the receiver, correcting the sample values for each of the set of range bins to provide a set of clutter corrected samples for each range bin, and determining an angular spectrum for each of a subset of the set of range bins from the clutter corrected samples.

    FORWARD ERROR CONTROL CODING
    30.
    发明申请
    FORWARD ERROR CONTROL CODING 有权

    公开(公告)号：US20210126656A1

    公开(公告)日：2021-04-29

    申请号：US17141095

    申请日：2021-01-04

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Mohamed Farouk Mansour ,  June Chul Roh ,  Srinath Hosur

    IPC: H03M13/29 ,  H03M13/27

    Abstract: A system and method for providing error control coding for backhaul applications are disclosed. Data is first encoded using Reed-Solomon (RS) coding. The output RS blocks are then turbo coded. The size of the output RS blocks is selected to match the input of the turbo encoder. The bits from the RS blocks may be interleaved to create the input turbo blocks. Cyclic Redundancy Check (CRC) parity bits may be added to the data prior to RS coding.

Patent Agency Ranking