公开(公告)号：US07143336B1

公开(公告)日：2006-11-28

申请号：US10219206

申请日：2002-08-15

申请人： Jaekyun Moon ,  Travis R. Oenning

发明人： Jaekyun Moon ,  Travis R. Oenning

IPC分类号： G06F11/00 ,  H03M13/00

CPC分类号： H03M13/1111 ,  G06F11/1032 ,  H03M13/098 ,  H03M13/1191 ,  H03M13/2963

摘要： A decoding system and method for decoding parallel concatenated parity-check code defines a parity check matrix (e.g., a sparse parity check matrix) for the parallel concatenated parity check code. One or more bipartite graph representations are determined based on the parity check matrix with each of the one or more bipartite graph representations including bit nodes and check nodes. At least one of the one or more bipartite graph representations is decoded using an iterative decoding process (e.g., using an algorithm based on belief propagation).

摘要翻译： 用于解码并行级联奇偶校验码的解码系统和方法为并行级联奇偶校验码定义奇偶校验矩阵（例如，稀疏奇偶校验矩阵）。 基于奇偶校验矩阵确定一个或多个二分图表示，其中一个或多个二分图表示中的每一个包括位节点和校验节点。 使用迭代解码处理（例如，使用基于置信传播的算法）对一个或多个二分图表示中的至少一个进行解码。

公开(公告)号：US08706792B1

公开(公告)日：2014-04-22

申请号：US12589633

申请日：2009-10-26

申请人： Jaekyun Moon

发明人： Jaekyun Moon

IPC分类号： G06F11/00 ,  H03M13/00

CPC分类号： H03M13/6583 ,  H03M13/112 ,  H03M13/1171 ,  H03M13/658

摘要： f(x(sk−1, sk))=A(sk−1)+B(sk) is calculated for nm2 pairs of consecutive state variables {sk−1, sk} using A(sk)=minsk−1,x{A(sk−1)+Γ(xk=x)} and B(sk)=minsk+1,x{B(sk+1)+Γ(xk+1=x, sk+1)}, where Γ(xk=x) is a metric associated with a branch xk=x connecting consecutive state variables sk−1 and sk. The nm lowest values are selected from the nm2 calculated values of f(x(sk−1, sk))=A(sk−1)+B(sk) and log likelihood ratios (LLRs) are set to those lowest f(x(sk−1, sk)) values. The nm values of x that correspond to the nm lowest values are determined.

摘要翻译： 对于nm2对的连续状态变量{sk-1，sk}，使用A（sk）= minsk-1，x（s）来计算f（x（sk-1，sk））= A（sk-1） {A（sk-1）+＆Ggr;（xk = x）}和B（sk）= minsk + 1，x {B（sk + 1）+＆Ggr;（xk + 1 = x，sk + 1）}， 其中＆Ggr;（xk = x）是与连接连续状态变量sk-1和sk的分支xk = x相关联的度量。 nm最小值选自f（x（sk-1，sk））= A（sk-1）+ B（sk）的nm2计算值，对数似然比（LLR）设置为最低f （sk-1，sk））值。 确定对应于nm最低值的x的nm值。

公开(公告)号：US08111770B1

公开(公告)日：2012-02-07

申请号：US11174423

申请日：2005-07-01

申请人： Jaekyun Moon ,  Hui Jin

发明人： Jaekyun Moon ,  Hui Jin

IPC分类号： H04L1/02

CPC分类号： H04L25/03318 ,  H04L25/03203

摘要： An electronic MIMO-OFDM carrier frequency recovery method is disclosed. The method includes receiving a wirelessly propagated time-domain signal observation, estimating a data-channel vector from a latest observation vector by correcting for a phase rotation effect based on an initial estimate or an up-to-date estimate of a phase rotation term, removing an effect associated with the data-channel vector from the latest observation vector using the estimated data-channel vector to obtain an up-to-date estimate of the phase rotation term; and repeating those prior acts iteratively to allow for production of FFT input samples that are free or nearly free of carrier frequency and phase error.

摘要翻译： 公开了一种电子MIMO-OFDM载波频率恢复方法。 该方法包括：接收无线传播的时域信号观测;基于最初估计或相位旋转项的最新估计，通过校正相位旋转效应，从最新观测向量估计数据信道向量; 使用估计数据信道向量从最新观测向量中去除与数据信道向量相关联的效应，以获得相位旋转项的最新估计; 并重复地重复这些先前的动作，以允许产生空闲或几乎没有载波频率和相位误差的FFT输入样本。

公开(公告)号：US07610019B2

公开(公告)日：2009-10-27

申请号：US11449068

申请日：2006-06-08

申请人： Jaekyun Moon ,  Younggyun Kim ,  Barrett J. Brickner ,  Paul C. Edwards ,  Michael E. Butenhoff

发明人： Jaekyun Moon ,  Younggyun Kim ,  Barrett J. Brickner ,  Paul C. Edwards ,  Michael E. Butenhoff

IPC分类号： H04B17/00

CPC分类号： H04L1/0001 ,  H04B7/0811 ,  H04B7/0814 ,  H04L1/0015 ,  H04L1/206

摘要： An apparatus for dynamic diversity signal reception based upon receiver-side link quality assessments includes two or more antennae. At least one switch is connected to the two or more antennae. A dynamic diversity controller is connected to the at least one switch. The dynamic diversity controller includes a link quality assessor to assess link quality and generate a link characterization value. A diversity configuration selector, responsive to the link characterization value, selectively activates the at least one switch to implement a dynamic diversity configuration. The link quality assessor includes a signal strength analyzer, a modem detector, and/or a MAC layer analyzer to assess the received signal and generate the link characterization value.

摘要翻译： 基于接收机侧链路质量评估的用于动态分集信号接收的装置包括两个或更多个天线。 至少一个开关连接到两个或更多个天线。 动态分集控制器连接到至少一个开关。 动态分集控制器包括链路质量评估者，以评估链路质量并生成链路特征值。 响应于链路特征值的分集配置选择器选择性地激活至少一个交换机以实现动态分集配置。 链路质量评估器包括信号强度分析器，调制解调器检测器和/或MAC层分析器，以评估所接收的信号并产生链路表征值。

公开(公告)号：US20070286268A1

公开(公告)日：2007-12-13

申请号：US11894102

申请日：2007-08-20

申请人： Younggyun Kim ,  Jaekyun Moon

发明人： Younggyun Kim ,  Jaekyun Moon

IPC分类号： H04B3/46

CPC分类号： H04L27/2662 ,  H04L25/03159 ,  H04L27/2657 ,  H04L27/2676 ,  H04L2025/03414

摘要： Digital communication signals that encode information in the phase may be susceptible to phase error from many sources. A device corrects for carrier and sampling phase errors, as well as additive phase noise. A digital phase locked loop simultaneously tracks the carrier phase error and the sampling phase error, and corrects the signal in the frequency domain. The device may use the sampling phase error to advance or delay the sampling window used to convert the signal from the time domain to the frequency domain.

摘要翻译： 在该阶段编码信息的数字通信信号可能容易受到许多来源的相位误差的影响。 设备校正载波和采样相位误差以及相位相位噪声。 数字锁相环同时跟踪载波相位误差和采样相位误差，并校正频域中的信号。 该装置可以使用采样相位误差推进或延迟用于将来自时域的信号转换到频域的采样窗口。

公开(公告)号：US20070079209A1

公开(公告)日：2007-04-05

申请号：US11224351

申请日：2005-09-13

申请人： Jihoon Park ,  Jaekyun Moon ,  Jun Lee

发明人： Jihoon Park ,  Jaekyun Moon ,  Jun Lee

IPC分类号： H03M13/00

CPC分类号： H03M13/09 ,  H03M13/033

摘要： A method of detecting an occurrence of an error event in data and an apparatus for the same are provided. The method includes: preparing an error detection code wherein syndrome sequences for dominant error events are all different; generating a codeword from source data using the error detection code; detecting the occurrence of the dominant error event in the codeword by checking a syndrome computed from the codeword; and determining a type and likely error starting positions of the occurred dominant error event using the syndrome sequences correspond to the syndrome.

摘要翻译： 提供一种检测数据中的错误事件的发生的方法及其装置。 该方法包括：准备错误检测码，其中主要误差事件的校正子序列全部不同; 使用所述错误检测码从源数据生成码字; 通过检查从码字计算的校正子来检测码字中的主要错误事件的发生; 并且使用所述综合征序列确定所发生的主要错误事件的类型和可能的错误开始位置对应于所述综合征。

公开(公告)号：US07173990B2

公开(公告)日：2007-02-06

申请号：US10141628

申请日：2002-05-06

申请人： Younggyun Kim ,  Farshid R Rad ,  Barrett J Brickner ,  Jaekyun Moon

发明人： Younggyun Kim ,  Farshid R Rad ,  Barrett J Brickner ,  Jaekyun Moon

IPC分类号： H04L1/02 ,  H04L5/12

CPC分类号： H04B7/0848 ,  H04B7/0837 ,  H04L1/06 ,  H04L25/0204 ,  H04L25/03159 ,  H04L25/067 ,  H04L27/38 ,  H04L2025/03414 ,  H04L2025/0342 ,  H04L2025/03426 ,  H04L2027/003 ,  H04L2027/004 ,  H04L2027/0057

摘要： A wireless communication technique enables equalization, soft demapping and phase error estimation functions to be performed jointly based on multiple observations of a transmitted symbol in wireless communication systems employing receive diversity. Multiple observations of a symbol are obtained from multiple antenna paths in a wireless receiver. Equalization, soft demapping and phase error estimation functions can be integrated within shared hardware, rather than distributed among separate hardware blocks, promoting reduced size, complexity and cost in a wireless receiver.

摘要翻译： 无线通信技术使得能够基于采用接收分集的无线通信系统中的传输符号的多个观察来共同执行均衡，软解映射和相位误差估计功能。 从无线接收机中的多个天线路径获得符号的多个观察结果。 均衡，软解映射和相位误差估计功能可以集成在共享硬件中，而不是分布在不同的硬件块之间，从而在无线接收机中促进尺寸减小，复杂度和成本的降低。

公开(公告)号：US07075547B2

公开(公告)日：2006-07-11

申请号：US10219397

申请日：2002-08-15

申请人： Jaekyun Moon

发明人： Jaekyun Moon

IPC分类号： G06T9/00

CPC分类号： G06K9/6286 ,  G06K9/6281 ,  G11B20/10009 ,  G11B20/10296 ,  H04L25/067

摘要： Low complexity signal-space detection can be applied to a variety of systems, e.g., data storage systems, data communication systems, DVD systems, systems that use media subject to a d=2 minimum run-length constraint, etc. The signal-space detector/method estimates a channel input symbol based on a finite number of observation samples. For example, in the binary input case, the signal-space detector divides a multidimensional space into two disjoint regions corresponding to opposite symbol decisions. The detection system/method determines in which region the observation vector falls and releases a corresponding hard decision, e.g., a binary symbol decision. Further, a soft decision can be provided that measures the reliability of the symbol decision.

公开(公告)号：US20060085721A1

公开(公告)日：2006-04-20

申请号：US11242874

申请日：2005-10-05

申请人： Jaekyun Moon ,  Jihoon Park ,  Jun Lee

发明人： Jaekyun Moon ,  Jihoon Park ,  Jun Lee

IPC分类号： H03M13/00

CPC分类号： G11B20/1813 ,  H03M13/09

摘要： Apparatuses and methods for detecting error events in a codeword reproduced by perpendicular magnetic recording medium (PMR. The method includes: generating cyclic redundancy check (CRC) parity bits based on a generator polynomial for a source information sequence to be recorded on PMR medium and recording a codeword in which the generated CRC parity bits are added to the source information sequence; and reading the recorded codeword and an error event in the read codeword. It is possible to detect error events when a codeword recorded by PMR is read, using a small number of bits.

摘要翻译： 用于检测由垂直磁记录介质再现的码字中的错误事件的装置和方法（PMR。该方法包括：基于用于待记录在PMR介质上的源信息序列的生成多项式和记录的循环冗余校验（CRC）奇偶校验位 其中生成的CRC奇偶校验位被添加到源信息序列的码字;以及读取所读取的码字中记录的码字和错误事件，当读取由PMR记录的码字时，可以使用小的 位数。

公开(公告)号：US08239728B1

公开(公告)日：2012-08-07

申请号：US12459016

申请日：2009-06-25

申请人： Jaekyun Moon ,  Hernant Thapar

发明人： Jaekyun Moon ,  Hernant Thapar

IPC分类号： H03M13/00

CPC分类号： H03M13/251 ,  G06F11/1012 ,  H03M13/152

摘要： A signal is encoded by receiving input data. A first portion of the input data is encoded to obtain a first set of encoded data. At least some part of the input data is processed to determine which one of a plurality of subsets the input data corresponds to. In the event the input data corresponds to a first subset having a greater signal margin (SM) than a second subset, the first set of encoded data and a second portion of the input data are output. In the event the input data corresponds to the second subset, the second portion of the input data is encoded to obtain a second set of encoded data and the first set of encoded data and the second set of encoded data are output.

摘要翻译： 通过接收输入数据对信号进行编码。 编码输入数据的第一部分以获得第一组编码数据。 处理输入数据的至少一部分以确定输入数据对应于多个子集中的哪一个。 在输入数据对应于具有比第二子集更大的信号余量（SM）的第一子集的情况下，输出第一组编码数据和输入数据的第二部分。 在输入数据对应于第二子集的情况下，输入数据的第二部分被编码以获得第二组编码数据，并输出第一组编码数据和第二组编码数据。