公开(公告)号：US09009560B1

公开(公告)日：2015-04-14

申请号：US14309319

申请日：2014-06-19

Applicant: Marvell International Ltd.

Inventor： Adina Matache ,  Heng Tang ,  Gregory Burd ,  Aditya Ramamoorthy ,  Jun Xu ,  Zining Wu

IPC: H03M13/00 ,  H03M13/11

CPC classification number: H03M13/1177 ,  H03M13/116 ,  H03M13/1188

Abstract: An apparatus includes a circuit configured to at least one of (i) encode first data to produce encoded data or (ii) decode second data to produce decoded data. The circuit is configured to operate according to a predetermined matrix. The predetermined matrix is represented by a two-dimensional grid of elements. Each element of the predetermined matrix labeled with a hyphen corresponds to a zero matrix. Each element of the predetermined matrix labeled with a number corresponds to a respective cyclic-permutation matrix.

Abstract translation: 一种装置包括被配置为（i）编码第一数据以产生编码数据或（ii）解码第二数据以产生解码数据中的至少一个的电路。 电路被配置为根据预定矩阵进行操作。 预定矩阵由元素的二维网格表示。 用连字符标记的预定矩阵的每个元素对应于零矩阵。 用数字标注的预定矩阵的每个元素对应于相应的循环置换矩阵。

公开(公告)号：US09166740B1

公开(公告)日：2015-10-20

申请号：US14165893

申请日：2014-01-28

Applicant: Marvell International Ltd.

Inventor： Adina Matache ,  Leilei Song ,  Bhaskar V. Nallapureddy ,  Hui-Ling Lou

IPC: H03M13/45 ,  H04L1/00 ,  H04L25/03 ,  H04L5/12 ,  H04L27/06

CPC classification number: H04L1/0054 ,  H03M13/45 ,  H04L25/03171 ,  H04L25/03242 ,  H04L25/03318

Abstract: Systems and methods are provided for determining a data value for a bit of interest in a received data signal. A closest 0-bit symbol candidate is selected from a plurality of 0-bit symbol candidates using a symbol selection distance approximation. A closest 1-bit symbol candidate is selected from a plurality of 1-bit symbol candidates using the symbol selection distance approximation. A 0-bit distance between the received data signal and the selected 0-bit symbol candidate is determined, and a 1-bit distance between the received data signal and the selected 1-bit symbol candidate is determined. A log likelihood ratio is calculated for the bit of interest using the determined 0-bit distance and the determined 1-bit distance.

Abstract translation: 系统和方法被提供用于确定接收到的数据信号中感兴趣的位的数据值。 使用符号选择距离近似从多个0位符号候选中选择最接近的0位符号候选。 使用符号选择距离近似，从多个1位符号候选中选择最接近的1位符号候选。 确定接收到的数据信号和所选择的0位符号候选之间的0比特距离，并确定接收到的数据信号与所选择的1比特符号候选之间的1比特距离。 使用所确定的0比特距离和所确定的1比特距离来计算感兴趣比特的对数似然比。

公开(公告)号：US08861658B1

公开(公告)日：2014-10-14

申请号：US13762046

申请日：2013-02-07

Applicant: Marvell International Ltd.

Inventor： Jungwon Lee ,  Sayandev Mukherjee ,  Adina Matache

IPC: H03D1/00 ,  H04W24/00

CPC classification number: H04W24/00 ,  H04B7/10 ,  H04B17/327 ,  H04L27/2601

Abstract: Signal power of a received signal, which has a plurality of preamble sequences associated with sub-carrier signals received from a plurality of sub-carriers, in a cellular Orthogonal Frequency Division Multiplexing system may be estimated by estimating as power for at least one preamble sequence of a signal received at a selected receive antenna. The preamble sequence is associated with a base station and a set of sub-carriers. A differential received signal developed for one of the set of sub-carriers is correlated with a normalized differential transmit signal for the preamble sequence, and the estimate of the power for the at least one preamble sequence is extracted based on the correlation.

Abstract translation: 在蜂窝正交频分复用系统中，具有与从多个子载波接收的子载波信号相关联的多个前导码序列的接收信号的信号功率可以通过估计作为至少一个前同步码序列的功率来估计 在选定的接收天线处接收的信号。 前导序列与基站和一组子载波相关联。 对于一组子载波中的一个发展的差分接收信号与用于前导码序列的归一化差分发送信号相关，并且基于相关性提取至少一个前导序列的功率估计。

公开(公告)号：US08762809B1

公开(公告)日：2014-06-24

申请号：US13942183

申请日：2013-07-15

Applicant: Marvell International Ltd.

Inventor： Adina Matache ,  Heng Tang ,  Gregory Burd ,  Aditya Ramamoorthy ,  Jun Xu ,  Zining Wu

IPC: H03M13/00

CPC classification number: H03M13/1177 ,  H03M13/116 ,  H03M13/1188

Abstract: An apparatus includes a circuit configured to at least one of (i) encode first data to produce encoded data or (ii) decode second data to produce decoded data. The circuit is configured to operate according to a predetermined matrix. Each element of the predetermined matrix labeled with a hyphen corresponds to a zero matrix. Each element of the predetermined matrix labeled with a number corresponds to a respective cyclic-permutation matrix.

Abstract translation: 一种装置包括被配置为（i）编码第一数据以产生编码数据或（ii）解码第二数据以产生解码数据中的至少一个的电路。 电路被配置为根据预定矩阵进行操作。 用连字符标记的预定矩阵的每个元素对应于零矩阵。 用数字标注的预定矩阵的每个元素对应于相应的循环置换矩阵。

公开(公告)号：US08873686B1

公开(公告)日：2014-10-28

申请号：US14226037

申请日：2014-03-26

Applicant: Marvell International Ltd.

Inventor： Jungwon Lee ,  Yakun Sun ,  Jiwoong Choi ,  Leilei Song ,  Adina Matache

IPC: H04B7/10 ,  H04L1/00 ,  H04B7/04

CPC classification number: H04L1/0048 ,  H04B7/0413 ,  H04J11/004

Abstract: A system including a first receiver that generates a first set of decoded codewords; and a first canceller that cancels, in response to any decoded codeword of the first set of decoded codewords failing CRC and a first decoded codeword from the first set of decoded codewords passing CRC, interference of a first codeword on a second set of codewords which includes the plurality of codewords and excludes the first codeword. The system further includes a second receiver that generates a third set of decoded codewords by decoding the second set of codewords; and a second canceller that cancels, in response to any decoded codeword of the third set of decoded codewords failing CRC and a second decoded codeword from the third set of decoded codewords passing CRC, interference of a second codeword on a fourth set of codewords.

Abstract translation: 一种包括产生第一组解码码字的第一接收机的系统; 以及第一消除器，其响应于未通过CRC的第一组解码码字的任何解码码字和来自经过CRC的来自第一解码码字集合的第一解码码字，第一码字对第二组码字的干扰包括 所述多个码字并且排除所述第一码字。 该系统还包括第二接收机，其通过对第二组码字进行解码来产生第三组解码码字; 以及第二消除器，其响应于未通过CRC的第三组解码码字的解码码字和来自经过CRC的第三解码码字集合的第二解码码字，在第四组码字上产生第二码字的干扰。

公开(公告)号：US09148207B1

公开(公告)日：2015-09-29

申请号：US14157485

申请日：2014-01-16

Applicant: Marvell International Ltd.

Inventor： Yakun Sun ,  Adina Matache ,  Jungwon Lee

IPC: H04W4/00 ,  H04B7/04

CPC classification number: H04B7/0456 ,  H04B7/0413 ,  H04B7/0632 ,  H04B7/066 ,  H04B7/0671 ,  H04B7/0673 ,  H04B7/0678 ,  H04B7/068 ,  H04B7/0691 ,  H04B17/336 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/0036 ,  H04L1/06 ,  H04L5/0023

Abstract: Systems and methods are provided for determining a channel quality indicator (CQI) in a transmission system associated with a diversity transmission scheme. A plurality of independent diversity branches are identified in the diversity transmission scheme. Each one of the independent diversity branches may correspond to a different portion of the effective channel and may include any suitable combination of frequency, time, and/or spatial components of the effective channel or of any wired or wireless paths or combinations of the same. An effective Signal-to-Noise Ratio (SNR) value is computed for each one of the identified independent diversity branches. The computed effective SNR values are combined for the identified independent diversity branches to generate a CQI value.

Abstract translation: 提供了用于确定与分集传输方案相关联的传输系统中的信道质量指示符（CQI）的系统和方法。 在分集传输方案中识别出多个独立分集分支。 独立分集分支中的每一个可以对应于有效信道的不同部分，并且可以包括有效信道或任何有线或无线路径或其组合的频率，时间和/或空间分量的任何合适的组合。 为所识别的独立分集分支中的每一个计算有效的信噪比（SNR）值。 为所识别的独立分集分支组合计算出的有效SNR值以产生CQI值。

公开(公告)号：US08937989B1

公开(公告)日：2015-01-20

申请号：US14150706

申请日：2014-01-08

Applicant: Marvell International Ltd.

Inventor： Jungwon Lee ,  Raj M. Misra ,  Adina Matache ,  Konstantinos Sarrigeorgidis

IPC: H04B3/46 ,  H04L25/02 ,  H04L27/26

CPC classification number: H04L25/024 ,  H04L25/022 ,  H04L25/0228 ,  H04L27/2601 ,  H04L27/2657 ,  H04L2027/003 ,  H04L2027/0067 ,  H04L2027/0093

Abstract: Systems and methods are provided for channel estimation using linear phase estimation. These systems and methods enable improved channel estimation by estimating a linear channel phase between received pilot subcarrier signals. The estimated linear phase can then be removed from the received pilot subcarrier signals. After the estimated linear phase is removed from the received pilot subcarrier signals, a channel response can be estimated. A final estimated channel response can be generated by multiplying the results of the linear channel estimation by the estimated linear phase.

Abstract translation: 提供了使用线性相位估计的信道估计的系统和方法。 这些系统和方法通过估计接收的导频副载波信号之间的线性信道相位来实现改进的信道估计。 然后可以从接收到的导频子载波信号中去除估计的线性相位。 在从接收到的导频子载波信号中去除估计的线性相位之后，可以估计信道响应。 可以通过将线性信道估计的结果乘以估计的线性相位来生成最终估计的信道响应。