中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

7 records (took 0.016 seconds)

    Multi-stream demodulation schemes with progressive optimization
    2.
    发明授权
    Multi-stream demodulation schemes with progressive optimization 有权

    公开(公告)号：US09722730B1

    公开(公告)日：2017-08-01

    申请号：US15041774

    申请日：2016-02-11

    Applicant: Marvell International Ltd.

    Inventor： Jie Huang

    IPC: H04L1/02 ,  H04L1/00 ,  H04B7/0456

    CPC classification number: H04L25/03891 ,  H04B7/0413

    Abstract: A data symbol vector comprising a plurality of data symbols is received. The data symbol vector corresponds to a transmitted data symbol vector comprising a corresponding plurality of transmitted data symbols. Data values are estimated for transmitted data symbols in a first group of transmitted data symbols using a hard-decision technique. One or more iterations of refining estimated data values for at least one of the transmitted data symbols in the first group are performed based on estimated data values for the other one or more transmitted data symbols in the first group. Likelihood values for bits corresponding to transmitted data symbols in a second group of transmitted data symbols are calculated using a soft maximum-likelihood (ML) technique based on the estimated and refined data values of transmitted data symbols in the first group.

    Network devices and methods of generating low-density parity-check codes and performing corresponding encoding of data
    3.
    发明授权
    Network devices and methods of generating low-density parity-check codes and performing corresponding encoding of data 有权
    网络设备和生成低密度奇偶校验码并执行相应的数据编码的方法

    公开(公告)号：US09559722B1

    公开(公告)日：2017-01-31

    申请号：US14706335

    申请日：2015-05-07

    Applicant: Marvell International LTD.

    Inventor： Jie Huang ,  Hui-Ling Lou ,  Leilei Song

    IPC: H03M13/03 ,  H03M13/11 ,  H03M13/00

    CPC classification number: H03M13/118 ,  H03M13/036 ,  H03M13/116 ,  H03M13/616 ,  H03M13/6362 ,  H03M13/6527

    Abstract: A network device including a matrix generating module, an encoding module and a transceiver. The matrix generating module is configured to generate or access a code base matrix, wherein the code base matrix has a corresponding code rate of 7/8. The matrix generating module is also configured to, based on the code base matrix, generate a resultant matrix of a low-density parity-check code. The resultant matrix includes sub-matrices. Each of the sub-matrices is generated based on a respective element in the code base matrix. The resultant matrix has a code length of 648 or 1296. The encoding module is configured to encode data based on the resultant matrix. The transceiver is configured to transmit the encoded data.

    Abstract translation: 一种包括矩阵生成模块，编码模块和收发器的网络设备。 矩阵生成模块被配置为生成或访问码基矩阵，其中码基矩阵具有7/8的对应码率。 矩阵生成模块还被配置为基于码基矩阵来生成低密度奇偶校验码的合成矩阵。 所得到的矩阵包括子矩阵。 基于代码库矩阵中的相应元素生成每个子矩阵。 所得到的矩阵具有648或1296的代码长度。编码模块被配置为基于所得到的矩阵对数据进行编码。 收发器被配置为发送编码数据。

    Systems and methods to reduce peak to average power ratio for dual sub-carrier modulated transmissions in a wireless network
    4.
    发明授权
    Systems and methods to reduce peak to average power ratio for dual sub-carrier modulated transmissions in a wireless network 有权

    公开(公告)号：US10735236B1

    公开(公告)日：2020-08-04

    申请号：US16571406

    申请日：2019-09-16

    Applicant: Marvell International LTD.

    Inventor： Jie Huang ,  Hongyuan Zhang ,  Yakun Sun ,  Rui Cao

    IPC: G08C17/00 ,  H04L27/26 ,  H04L27/18 ,  H04W84/12

    Abstract: A system includes a modulator to modulate data using Quadrature Phase Shift Keying modulation and dual sub-carrier modulation to generate modulated symbols for transmission on a plurality of subcarriers. A repetition module repeats the modulated symbols from a first half of the plurality of subcarriers to a second half of the plurality of subcarriers. A phase rotation module rotates phase of the modulated symbols on selected subcarriers of the second half of the plurality of subcarriers. The selected subcarriers include all of the second half of the plurality of subcarriers. The phase rotation module rotates the phase of the modulated symbols on all of the second half of the plurality of subcarriers to conjugate the modulated symbols on all of the second half of the plurality of subcarriers relative to corresponding modulated symbols on all of the first half of the plurality of subcarriers.

    Systems and methods to reduce peak to average power ratio for dual sub-carrier modulated transmissions in a wireless network
    5.
    发明授权
    Systems and methods to reduce peak to average power ratio for dual sub-carrier modulated transmissions in a wireless network 有权

    公开(公告)号：US10439854B1

    公开(公告)日：2019-10-08

    申请号：US16151870

    申请日：2018-10-04

    Applicant: Marvell International LTD.

    Inventor： Jie Huang ,  Hongyuan Zhang ,  Yakun Sun ,  Rui Cao

    IPC: G08C17/00 ,  H04L27/26 ,  H04L27/18 ,  H04W84/12

    Abstract: A system includes a modulator to modulate data using Quadrature Phase Shift Keying modulation and dual sub-carrier modulation to generate modulated symbols for transmission on a plurality of subcarriers. A repetition module repeats the modulated symbols from a first half of the plurality of subcarriers to a second half of the plurality of subcarriers. A phase rotation module rotates phase of the modulated symbols on selected subcarriers of the second half of the plurality of subcarriers. The selected subcarriers include all of the second half of the plurality of subcarriers. The phase rotation module rotates the phase of the modulated symbols on all of the second half of the plurality of subcarriers to conjugate the modulated symbols on all of the second half of the plurality of subcarriers relative to corresponding modulated symbols on all of the first half of the plurality of subcarriers.

    Determining channel information using decision feedback equalization
    7.
    发明授权
    Determining channel information using decision feedback equalization 有权
    使用决策反馈均衡确定信道信息

    公开(公告)号：US09048893B1

    公开(公告)日：2015-06-02

    申请号：US14028088

    申请日：2013-09-16

    Applicant: Marvell International Ltd.

    Inventor： Yakun Sun ,  Mingguang Xu ,  Jie Huang

    IPC: H04B7/04 ,  H04L25/03 ,  H04L1/00

    CPC classification number: H04B7/0417 ,  H04B7/0413 ,  H04B7/0626 ,  H04L1/0054 ,  H04L25/03267 ,  H04L25/03292 ,  H04L25/03968

    Abstract: In various embodiments, the present disclosure provides transmitters, receivers, and methods of determining channel state information for a maximum likelihood (ML) multiple input multiple output (MIMO) receiver, as well as transmitting and demodulating signals based on the determined channel state information. A ML MIMO receiver receives a first MIMO signal from a MIMO transmitter. Channel characteristics of the first MIMO signal are determined based on decision feedback equalization (DFE) processing. The DFE-determined channel characteristics, or information derived from the DFE-determined channel characteristics, are reported to the MIMO transmitter and the MIMO ML receiver decodes a second MIMO signal based on ML processing. The second MIMO signal is modulated and encoded by the MIMO transmitter according to a modulation and coding scheme in accordance with (1) the DFE-determined channel characteristics or (2) the information derived from the DFE-determined channel characteristics.

    Abstract translation: 在各种实施例中，本公开提供了确定用于最大似然（ML）多输入多输出（MIMO）接收机的信道状态信息的发射机，接收机和方法，以及基于所确定的信道状态信息来发射和解调信号。 ML MIMO接收机从MIMO发射机接收第一MIMO信号。 基于判决反馈均衡（DFE）处理确定第一MIMO信号的信道特性。 将DFE确定的信道特性或从DFE确定的信道特性导出的信息报告给MIMO发射机，并且MIMO ML接收机基于ML处理来解码第二MIMO信号。 根据（1）DFE确定的信道特性的调制和编码方案，由MIMO发射机调制和编码第二MIMO信号，或（2）从DFE确定的信道特性导出的信息。

Patent Agency Ranking