公开(公告)号：US07453959B2

公开(公告)日：2008-11-18

申请号：US11000290

申请日：2004-11-29

申请人： Yun-Hee Kim ,  Kwang-Soon Kim ,  Sang-Hyun Lee ,  Jae-Young Ahn

发明人： Yun-Hee Kim ,  Kwang-Soon Kim ,  Sang-Hyun Lee ,  Jae-Young Ahn

IPC分类号： H03K9/00 ,  H04L27/00 ,  H03M13/00

CPC分类号： H04L1/0045 ,  H03M13/11 ,  H03M13/2957 ,  H03M13/31 ,  H03M13/3723 ,  H03M13/455 ,  H03M13/612 ,  H04L25/067 ,  H04L27/2647

摘要： Disclosed is an apparatus and method for erasure detection and soft-decision decoding in a cellular system receiver. In the present invention, a complex channel gain and a noise variance of a received symbol from a cellular system transmitter are estimated, and an erasure symbol (a symbol with high power interference) is detected by comparing a threshold value according to the estimated complex channel gain or noise variance with power of the received symbol. Log-likelihood ratios corresponding to constituent bits of the detected erasure symbols are allowed to be 0, and the log-likelihood ratios of the constituent bits of the other received symbols are calculated. A soft-decision decoding operation of received bits is performed with the calculated log-likelihood ratios.

摘要翻译： 公开了一种用于蜂窝系统接收机中的擦除检测和软判决解码的装置和方法。 在本发明中，估计来自蜂窝系统发射机的接收符号的复信道增益和噪声方差，并且通过比较根据估计的复信道的阈值来检测擦除符号（具有高功率干扰的符号） 增益或噪声方差与接收到的符号的功率。 对应于检测到的擦除符号的构成比特的对数似然比被允许为0，并且计算其他接收符号的构成比特的对数似然比。 利用所计算的对数似然比来执行接收比特的软判决解码操作。

公开(公告)号：US07434117B1

公开(公告)日：2008-10-07

申请号：US11163723

申请日：2005-10-28

申请人： Pei-Shiun Chung ,  Wei-Nan Sun

发明人： Pei-Shiun Chung ,  Wei-Nan Sun

IPC分类号： G06F11/00 ,  G06F1/00 ,  H03M13/00 ,  G10L19/00

CPC分类号： H03M13/47 ,  G10L19/005 ,  G10L25/69 ,  H03M13/09 ,  H03M13/612

摘要： A method of operating a receiver to determine a bad frame indication (BFI) of a received speech block includes decoding speech information bits of the received speech block; re-encoding the decoded speech information bits; comparing the received speech information bits with the corresponding decoded and re-encoded speech information bits to calculate a number of erroneous bits; determining a mode information of the received speech block; calculating a signal quality measurement of the received speech block; calculating a block quality metric according to the mode information, wherein the block quality metric is related to both the number of erroneous bits and the signal quality measurement; and setting the BFI of the received speech block according to the block quality metric.

摘要翻译： 操作接收机以确定接收到的语音块的不良帧指示（BFI）的方法包括解码所接收的语音块的语音信息比特; 对所解码的语音信息比特重新编码; 将接收到的语音信息比特与对应的解码和重新编码的语音信息比特进行比较，以计算错误比特数; 确定所接收的语音块的模式信息; 计算所接收的语音块的信号质量测量; 根据模式信息计算块质量度量，其中块质量度量与错误位数和信号质量测量两者相关; 以及根据块质量度量设置所接收的语音块的BFI。

公开(公告)号：US20070286292A1

公开(公告)日：2007-12-13

申请号：US10596776

申请日：2003-12-23

申请人： Dignus-Jan Moelker ,  Jan Stemerdink

发明人： Dignus-Jan Moelker ,  Jan Stemerdink

IPC分类号： H04B1/66

CPC分类号： H03M13/2957 ,  H03M13/612 ,  H03M13/6337 ,  H03M13/658 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0066

摘要： Method and decoding device for decoding a convolutionally coded input data signal y. The input data signal is multiplied with a scaling factor Lc(8) and then demultiplexed (6). The demultiplexed input data signal LcS is then turbo decoded (5) in order to obtain decoder output likelihood ratio data Λ. The scaling factor Lc is updated (7) for a next iteration in dependence on a combination of a posteriori likelihood data based on turbo decoded output data Λ and a priori likelihood data based on the demultiplexed signal LcS.

摘要翻译： 用于解码卷积编码的输入数据信号y的方法和解码装置。 输入数据信号与缩放因子L C（8）相乘，然后解复用（6）。 然后对解复用的输入数据信号L C C S进行turbo解码（5），以便获得解码器输出似然比数据Lambda。 根据基于turbo解码输出数据Lambda的后验似然数据的组合和基于解复用信号L'的先验似然数据，缩放因子L C c被更新（7），用于下一次迭代， SUB> c

公开(公告)号：US20070076669A1

公开(公告)日：2007-04-05

申请号：US11593899

申请日：2006-11-06

申请人： Behrouz Boroujeny ,  Peiman Amini

发明人： Behrouz Boroujeny ,  Peiman Amini

IPC分类号： H04B7/216

CPC分类号： H04L1/20 ,  H03M13/2957 ,  H03M13/47 ,  H03M13/612 ,  H04B1/7103 ,  H04L1/005 ,  H04L1/0066 ,  H04L25/03171 ,  H04L25/067 ,  H04L2025/03426

摘要： A technique for estimating channel data probability in a multi-user or multiple-input multiple-output communication system is disclosed. The technique uses parallel Markov Chain Monte Carlo simulation to select a plurality of hypothetical channel data patterns. Channel data bit probabilities are obtained by summing conditional bit probabilities, where the conditional bit probabilities are conditioned on an observation of the multi-channel signal and the hypothetical channel data patterns.

摘要翻译： 公开了一种用于估计多用户或多输入多输出通信系统中的信道数据概率的技术。 该技术使用并行马尔科夫链蒙特卡罗模拟来选择多个假设的通道数据模式。 信道数据比特概率是通过对条件比特概率求和来获得的，其中条件比特概率对多信道信号和假想信道数据模式的观察有条件。

公开(公告)号：US20050278609A1

公开(公告)日：2005-12-15

申请号：US11000290

申请日：2004-11-29

申请人： Yun-Hee Kim ,  Kwang-Soon Kim ,  Sang-Hyun Lee ,  Jae-Young Ahn

发明人： Yun-Hee Kim ,  Kwang-Soon Kim ,  Sang-Hyun Lee ,  Jae-Young Ahn

IPC分类号： H03D1/00 ,  H03M13/00 ,  H03M13/11 ,  H03M13/29 ,  H03M13/31 ,  H03M13/45 ,  H04L1/00 ,  H04L25/06 ,  H04L27/06 ,  H04L27/26

CPC分类号： H04L1/0045 ,  H03M13/11 ,  H03M13/2957 ,  H03M13/31 ,  H03M13/3723 ,  H03M13/455 ,  H03M13/612 ,  H04L25/067 ,  H04L27/2647

摘要： Dislosed is an apparatus and method for erasure detection and soft-decision decoding in a cellular system receiver. In the present invention, a complex channel gain and a noise variance of a received symbol from a cellular system transmitter are estimated, and an erasure symbol (a symbol with high power interference) is detected by comparing a threshold value according to the estimated complex channel gain or noise variance with power of the received symbol. Log-likelihood ratios corresponding to constituent bits of the detected erasure symbols are allowed to be 0, and the log-likelihood ratios of the constituent bits of the other received symbols are calculated. A soft-decision decoding operation of received bits is performed with the calculated log-likelihood ratios.

摘要翻译： Dislosed是用于蜂窝系统接收机中的擦除检测和软判决解码的装置和方法。 在本发明中，估计来自蜂窝系统发射机的接收符号的复信道增益和噪声方差，并且通过比较根据估计的复信道的阈值来检测擦除符号（具有高功率干扰的符号） 增益或噪声方差与接收到的符号的功率。 对应于检测到的擦除符号的构成比特的对数似然比被允许为0，并且计算其他接收符号的构成比特的对数似然比。 利用所计算的对数似然比来执行接收比特的软判决解码操作。

公开(公告)号：US20040081259A1

公开(公告)日：2004-04-29

申请号：US10279770

申请日：2002-10-24

发明人： Gerhard Ammer ,  Jan-Enno F. Meyer ,  Shuzhan Xu

IPC分类号： H03D001/00 ,  H04L027/06

CPC分类号： H04L1/005 ,  H03M13/2957 ,  H03M13/3905 ,  H03M13/612 ,  H03M13/6337 ,  H03M13/658 ,  H04L1/0055 ,  H04L25/067

摘要： A receiver for iterative decoding of a received, encoded signal employs slot-based scaling of soft samples. Iterative decoding employs a constituent maximum a priori (MAP) decoder for each constituent encoding of information of the encoded signal. Root mean square (RMS) values for soft samples over a slot are selected for dynamic range scaling. Squared RMS values are combined and equal the squared RMS value for a frame multiplied by a control constant, and this relationship may be employed to derive scaling constants for each slot. Alternatively, the square root of the RMS value multiplied by a constant serves as an SNR estimator that may be employed to scale samples to reduce dynamic range and modify logarithmic correction values for max* term calculation during log-MAP decoding.

摘要翻译： 用于接收的编码信号的迭代解码的接收机采用基于缝隙的软样本缩放。 迭代解码对编码信号的信息的每个构成编码采用先验（MAP）解码器的组成最大值。 选择一个时隙上的软样本的均方根（RMS）值进行动态范围缩放。 平方RMS值被组合，并且等于一个乘以控制常数的帧的平方RMS值，并且可以采用该关系来导出每个时隙的缩放常数。 或者，RMS值乘以常数的平方根用作SNR估计器，其可用于缩放样本以减小动态范围，并且在对数MAP解码期间修改max *项计算的对数校正值。

公开(公告)号：US06581179B1

公开(公告)日：2003-06-17

申请号：US08669937

申请日：1996-06-25

申请人： Amer A. Hassan

发明人： Amer A. Hassan

IPC分类号： H03M1345

CPC分类号： H04B7/2643 ,  H03M13/1515 ,  H03M13/19 ,  H03M13/2906 ,  H03M13/3707 ,  H03M13/612 ,  H04L1/0045 ,  H04L1/0065

摘要： A method and apparatus for decoding digitally encoded communication signals transmitted over a fading channel. According to the disclosed embodiments, a sequence of test bits are transmitted in each TDMA slots, and a mathematical distance (e.g., a Hamming or Euclidean distance) is calculated and used to determine reliability information indicative of the reliability of the bits or symbols in a received time slot. Alternatively, a concatenated coding scheme can be used to transmit digital communication signals. Reliability information can be generated using the inner code and the output of the inner decoder.

摘要翻译： 一种用于解码通过衰落信道发送的经数字编码的通信信号的方法和装置。 根据所公开的实施例，在每个TDMA时隙中发送测试比特序列，并且计算数学距离（例如，汉明或欧几里德距离），并用于确定指示在一个或多个位置中的比特或符号的可靠性的可靠性信息 收到时间段 或者，可以使用级联编码方案来发送数字通信信号。 可以使用内部代码和内部解码器的输出来生成可靠性信息。

公开(公告)号：US20020041640A1

公开(公告)日：2002-04-11

申请号：US09805176

申请日：2001-03-14

发明人： Philippe Le Bars ,  Frederique Ehrmann ,  Francois Thoumy ,  Lionel Le Scolan ,  Samuel Rousselin

IPC分类号： H04L027/06 ,  H03D001/00

CPC分类号： H03M13/612 ,  H03M13/015 ,  H03M13/2957 ,  H03M13/658

摘要： In order to evaluate the noise related to data issuing from a turbo encoder: estimates of the noise related to its systematic output, to the data issuing from its first elementary encoder and to the data issuing from its second elementary encoder are determined (70); at least two of the estimates of the noise related to the systematic output, to the data issuing from the first encoder, and to the data issuing from the second encoder, are added (72); the results of these additions are divided (74) by the number of augends added, and then inverted (76), so as to obtain a noise factor; and the noise factor is multiplied with the data issuing from at least one of the first encoder, second encoder and systematic output.

摘要翻译： 为了评估与turbo编码器的数据发布相关的噪声：确定与其系统输出相关的噪声的估计，从其第一个基本编码器发出的数据和从其第二个基本编码器发出的数据。 （72）中增加了与系统输出相关的噪声的估计，至从第一编码器发出的数据和从第二编码器发出的数据的估计中的至少两个。 将这些加法的结果除以加法的数量（74），然后反转（76），以获得噪声因子; 并且将噪声系数与从第一编码器，第二编码器和系统输出中的至少一个发出的数据相乘。

公开(公告)号：US20240243759A1

公开(公告)日：2024-07-18

申请号：US18613097

申请日：2024-03-21

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： Valerio BIOGLIO ,  Charles Pillet ,  Ingmar LAND

IPC分类号： H03M13/00

CPC分类号： H03M13/616 ,  H03M13/611 ,  H03M13/612

摘要： An apparatus for generating a frozen set associated with a polar code of length ‘N’ and dimension ‘K’ comprises a processing unit configured to take in input the polar code length ‘N’, the dimension ‘K’, and a profile of a structure of a block lower triangular affine (BLTA) group. The BLTA group structure is associated with an affine transformation matrix of size ‘n×n’ and the profile is an ordered set of a plurality of values corresponding to block sizes of blocks. The blocks are sub-matrices of the affine transformation matrix with all the diagonals of blocks in the same order as the ordered block sizes, forming the diagonal of the affine transformation matrix, each of the block sizes is such that ‘n’ is equal to the sum of block sizes and ‘n’ is equal to log2(N). The processing unit generates the frozen set.

公开(公告)号：US12009034B2

公开(公告)日：2024-06-11

申请号：US16807065

申请日：2020-03-02

申请人： Micron Technology, Inc.

发明人： Sivagnanam Parthasarathy ,  James Fitzpatrick ,  Patrick Robert Khayat ,  Abdelhakim S. Alhussien

IPC分类号： G11C16/26 ,  G06F9/30 ,  G06F9/38 ,  G06F18/243 ,  H03M13/00 ,  H03M13/01

CPC分类号： G11C16/26 ,  G06F9/30021 ,  G06F9/30101 ,  G06F9/3804 ,  G06F18/24323 ,  H03M13/015 ,  H03M13/612

摘要： A memory sub-system configured to: measure a plurality of sets of signal and noise characteristics of a group of memory cells in a memory device; determine a plurality of optimized read voltages of the group of memory cells from the plurality of sets of signal and noise characteristics respectively; generate features from the plurality of sets of signal and noise characteristics, including at least one compound feature generated from the plurality of sets of signal and noise characteristics; generate, using the features, a classification of a bit error rate of data retrievable from the group of memory cells; and control an operation to read the group of memory cells based on the classification.