中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

19 records (took 0.013 seconds)

    System and method for multi-carrier modulation
    2.
    发明申请
    System and method for multi-carrier modulation 有权

    公开(公告)号：US20060120472A1

    公开(公告)日：2006-06-08

    申请号：US11331520

    申请日：2006-01-12

    Applicant: Robindra Joshi ,  Jeffrey Putman ,  Thuji Lin ,  Paul Yang

    Inventor： Robindra Joshi ,  Jeffrey Putman ,  Thuji Lin ,  Paul Yang

    IPC: H04K1/10

    CPC classification number: H04L27/152 ,  H04L27/2602 ,  H04L27/261 ,  H04L27/2657 ,  H04L27/2675 ,  H04L2027/0028 ,  H04L2027/0055 ,  H04L2027/0067 ,  H04L2027/0069 ,  H04L2027/0083

    Abstract: A method of compensating for carrier frequency and phase errors of a received multi-carrier modulated signal. The received multi-carrier signal including modulated carriers for transmitting known data and unmodulated carriers for error correction, comprising, time domain down converting the received multi-carrier signal to base-band to provide a down-converted signal, the down-converted signal including a plurality of modulated carriers for transmitting known data and unmodulated carriers for error correction. Sampling an unmodulated carrier of the down-converted signal to provide received data samples. Providing a reference signal derived from the unmodulated carrier of the down-converted signal. And, estimating phase errors from a phase difference between the ummodulated carrier and the reference signal derived from the unmodulated carrier of the down-converted signal to provide a plurality of received sample phase error estimates for each modulated carrier.

    Constellation-multiplexed transmitter and receiver
    5.
    发明授权
    Constellation-multiplexed transmitter and receiver 有权

    公开(公告)号：US08462837B2

    公开(公告)日：2013-06-11

    申请号：US13273911

    申请日：2011-10-14

    Applicant: Thuji Simon Lin ,  Steven Jaffe ,  Robindra Joshi

    Inventor： Thuji Simon Lin ,  Steven Jaffe ,  Robindra Joshi

    IPC: H04B3/46

    CPC classification number: H04L27/34 ,  H04L1/0003 ,  H04L25/03178 ,  H04L25/03184

    Abstract: A device of dynamic communication of information allows, on the average, non-integer bits per symbol transmission, using a compact code set or a partial response decoding receiver. A stream of selectable predetermined integer bits, e.g., k or k+1 data bits, is grouped into a selectable integer number of bit vectors which then are mapped onto corresponding signal constellations forming transmission symbols. Two or more symbols can be grouped and further encoded, so that a symbol is spread across the two or more symbols being communicated. Sequence estimation using, for example, maximum likelihood techniques, as informed by noise estimates relative to the received signal. Each branch metric in computing the path metric of a considered sequence at the receiver is weighted by the inverse of the noise power. It is desirable that the constellation selection, sequence estimation and noise estimation be performed continuously and dynamically.

    Constellation-multiplexed transmitter and receiver
    8.
    发明授权
    Constellation-multiplexed transmitter and receiver 有权
    星座多路复用发射机和接收机

    公开(公告)号：US06553063B1

    公开(公告)日：2003-04-22

    申请号：US09430466

    申请日：1999-10-29

    Applicant: Thuji Simon Lin ,  Steven Jaffe ,  Robindra Joshi

    Inventor： Thuji Simon Lin ,  Steven Jaffe ,  Robindra Joshi

    IPC: H04L516

    CPC classification number: H04L25/03178 ,  H04L1/0003 ,  H04L25/03184 ,  H04L27/34

    Abstract: A device of dynamic communication of information allows, on the average, non-integer bits per symbol transmission, using a compact code set or a partial response decoding receiver. A stream of k or k+1 data bits is grouped into bit vectors which then are mapped onto corresponding signal constellations forming transmission symbols. Two or more symbols can be grouped and further encoded, so that a symbol is spread across the two or more symbols being communicated. Sequence estimation using, for example, maximum likelihood techniques, as informed by noise estimates relative to the received signal. Each branch metric in computing the path metric of a considered sequence at the receiver is weighted by the inverse of the noise power. It is desirable that the constellation selection, sequence estimation and noise estimation be performed continuously and dynamically.

    Abstract translation: 使用紧凑代码集或部分响应解码接收器的信息的动态通信装置平均允许每个符号传输的非整数比特。 将k或k + 1个数据比特流分组成比特向量，然后映射到形成传输符号的相应的信号星座上。 可以对两个或更多个符号进行分组和进一步编码，使得符号分布在所传送的两个或更多个符号之间。 使用例如最大似然技术的序列估计，通过相对于接收信号的噪声估计来通知。 在接收机处计算所考虑的序列的路径度量的每个分支度量被噪声功率的倒数加权。 期望连续动态地执行星座选择，序列估计和噪声估计。

    Constellation-Multiplexed Transmitter and Receiver
    9.
    发明申请
    Constellation-Multiplexed Transmitter and Receiver 有权
    星座多路复用发射机和接收机

    公开(公告)号：US20120275508A1

    公开(公告)日：2012-11-01

    申请号：US13273911

    申请日：2011-10-14

    Applicant: Thuji Simon Lin ,  Steven Jaffe ,  Robindra Joshi

    Inventor： Thuji Simon Lin ,  Steven Jaffe ,  Robindra Joshi

    IPC: H04L27/00

    CPC classification number: H04L27/34 ,  H04L1/0003 ,  H04L25/03178 ,  H04L25/03184

    Abstract: A device of dynamic communication of information allows, on the average, non-integer bits per symbol transmission, using a compact code set or a partial response decoding receiver. A stream of selectable predetermined integer bits, e.g., k or k+1 data bits, is grouped into a selectable integer number of bit vectors which then are mapped onto corresponding signal constellations forming transmission symbols. Two or more symbols can be grouped and further encoded, so that a symbol is spread across the two or more symbols being communicated. Sequence estimation using, for example, maximum likelihood techniques, as informed by noise estimates relative to the received signal. Each branch metric in computing the path metric of a considered sequence at the receiver is weighted by the inverse of the noise power. It is desirable that the constellation selection, sequence estimation and noise estimation be performed continuously and dynamically.

    Abstract translation: 使用紧凑代码集或部分响应解码接收器的信息的动态通信装置平均允许每个符号传输的非整数比特。 可选择的预定整数比特流（例如k或k + 1个数据比特）被分组成可选择的整数个比特向量，然后将其映射到形成发送符号的相应的信号星座上。 可以对两个或更多个符号进行分组和进一步编码，使得符号分布在所传送的两个或更多个符号之间。 使用例如最大似然技术的序列估计，通过相对于接收信号的噪声估计来通知。 在接收机处计算所考虑的序列的路径度量的每个分支度量被噪声功率的倒数加权。 期望连续动态地执行星座选择，序列估计和噪声估计。

Patent Agency Ranking