公开(公告)号：US20140359393A1

公开(公告)日：2014-12-04

申请号：US13912059

申请日：2013-06-06

Applicant: LSI Corporation

Inventor： Fan Zhang ,  Shu Li ,  Jun Xiao ,  Kaitlyn T. Nguyen

IPC: G06F11/10 ,  H03M13/09

CPC classification number: G06F11/1076 ,  H03M13/1111 ,  H03M13/27 ,  H03M13/2948 ,  H03M13/2957 ,  H03M13/6331 ,  H03M13/658 ,  H03M13/6583 ,  H04L2201/06

Abstract: The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for use of a detector output by a data decoder.

Abstract translation: 本发明涉及用于数据处理的系统和方法，更具体地涉及用于由数据解码器输出的检测器的系统和方法。

公开(公告)号：US20180227079A1

公开(公告)日：2018-08-09

申请号：US15891265

申请日：2018-02-07

Applicant: Samsung Electronics Co., Ltd ,  Postech Academy-Industry Foundation

Inventor： Seok-Ki AHN ,  Kyeongcheol YANG ,  Daeyeol YANG ,  Sunghye CHO

IPC: H04L1/00 ,  H04L27/38 ,  H04L25/03

CPC classification number: H04L1/0054 ,  H04L1/0045 ,  H04L25/03057 ,  H04L25/03891 ,  H04L25/067 ,  H04L27/01 ,  H04L27/36 ,  H04L27/38 ,  H04L2025/0342 ,  H04L2201/06

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication systems such as Long Term Evolution (LTE). A method for operating a receiver in a wireless communication system may include: receiving a signal from a transmitter; performing Integer Forcing (IF) equalization on the received signal; determining a log LikeLihood Ratio (LLR) value of each bit by using a posteriori probability of each bit for the signal determined based on an equalization matrix and a likelihood value for the signal; and decoding the signal by using the LLR value.

公开(公告)号：US09274889B2

公开(公告)日：2016-03-01

申请号：US13912059

申请日：2013-06-06

Applicant: LSI Corporation

Inventor： Fan Zhang ,  Shu Li ,  Jun Xiao ,  Kaitlyn T. Nguyen

IPC: G06F11/10 ,  H03M13/11 ,  H03M13/27 ,  H03M13/00 ,  H03M13/29

CPC classification number: G06F11/1076 ,  H03M13/1111 ,  H03M13/27 ,  H03M13/2948 ,  H03M13/2957 ,  H03M13/6331 ,  H03M13/658 ,  H03M13/6583 ,  H04L2201/06

Abstract: The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for use of a detector output by a data decoder. As an example, a data processing system is discussed that includes a data detector circuit operable to provide a first detector output and a second detector output, and a combining circuit operable to combine a first input derived from the first detector output with a second input derived from the second detector output to yield a combined detector output. The combined detector output includes a unified data set element generated by combining an element of the first input with a corresponding element of the second input.

Abstract translation: 本发明涉及用于数据处理的系统和方法，更具体地涉及用于由数据解码器输出的检测器的系统和方法。 作为示例，讨论了包括可操作以提供第一检测器输出和第二检测器输出的数据检测器电路的数据处理系统，以及组合电路，其可操作以将从第一检测器输出导出的第一输入与导出的第二输入 从第二检测器输出产生组合的检测器输出。 组合的检测器输出包括通过将第一输入的元素与第二输入的相应元素组合而产生的统一数据集元素。

公开(公告)号：KR100880664B1

公开(公告)日：2009-01-30

申请号：KR1020070103697

申请日：2007-10-15

Applicant: 세종대학교산학협력단

Inventor： 이지혜 ,  송형규

IPC: H04L27/26

CPC classification number: H04L27/2649 ,  H04L25/03318 ,  H04L27/2695 ,  H04L2201/06

Abstract: The efficient soft-decision demodulation method and the apparatus are provided from the MB-OFDM UWB system using the DCM is provided to reduce the loss of diversity by using the channel state information. The receiver comprises the pre-processor(40), the decision metric part(41), the channel estimator(42), the reliability decision unit(43) and soft-decision demodeulator(44). The pre-processor extracts the baseband signal from the received DCM MB-OFDM signal. The pre-processor converts the extracted signal into the digital signal. The pre -processor performs the FFT(Fast Fourier Transform) about the digital signal. The channel estimator estimates the channel from the signal passing through FFT. The channel estimation is performed by using the channel estimation sequence.

Abstract translation: 提供了使用DCM的MB-OFDM UWB系统提供的高效软判决解调方法和装置，以通过使用信道状态信息来减少分集丢失。 接收机包括预处理器（40），判定度量部分（41），信道估计器（42），可靠性判定单元（43）和软判决解码器（44）。 预处理器从接收到的DCM MB-OFDM信号中提取基带信号。 预处理器将提取的信号转换成数字信号。 预处理器执行关于数字信号的FFT（快速傅里叶变换）。 信道估计器从通过FFT的信号估计信道。 通过使用信道估计序列来进行信道估计。

公开(公告)号：KR100848057B1

公开(公告)日：2008-07-23

申请号：KR1020070010041

申请日：2007-01-31

Applicant: 연세대학교 산학협력단

Inventor： 최원석 ,  권순찬 ,  서종수

IPC: H04L27/34

CPC classification number: H04L27/233 ,  H04L25/03318 ,  H04L2201/06

Abstract: A method and a system of an adaptive soft decision feedback differential phase detection combined with an MRC diversity are provided to improve a performance of a viterbi decoder by suppressing an error floor phenomenon due to a Doppler shift in a multi-path fading channel. An adaptive decision feedback differential phase demodulator(100) receives plural reception signals and a feedback signal and outputs a differential phase demodulation signal and an adaptive decision feedback differential phase demodulation signal. An MRC(Maximum Ratio Combining) mixer(200) receives signals from the adaptive decision feedback differential phase demodulator and processes the received signals to output a value for extracting a hard decision value. The MRC mixer outputs the feedback signal to the adaptive decision feedback differential phase demodulator. A soft decision portion(300) extracts hard decision values of the output signals from the MRC mixer, and compares the extracted values with each other to obtain a soft decision value. When U[k]=X[k] and V[k]=Y[k], it is determined that U[k] and V[k] are correct values, and signs of real and imaginary parts of z[k] are maintained. When U[k]X[k] or V[k]Y[k], it is determined that U[k] or V[k] is an incorrect value, and a sign of a real or imaginary part of z[k] is changed. The final z[k] value is determined as the soft decision value.

Abstract translation: 提供了与MRC分集相结合的自适应软判决反馈差分相位检测的方法和系统，以通过抑制由于多径衰落信道中的多普勒频移引起的误差底层现象来提高维特比解码器的性能。 自适应判决反馈差分相位解调器（100）接收多个接收信号和反馈信号，并输出差分相位解调信号和自适应判决反馈差分相位解调信号。 MRC（最大比组合）混合器（200）从自适应判决反馈差分相位解调器接收信号，并处理接收到的信号以输出提取硬判决值的值。 MRC混频器将反馈信号输出到自适应判决反馈差分相位解调器。 软决策部分（300）从MRC混合器提取输出信号的硬判决值，并将提取的值彼此进行比较以获得软判决值。 当U [k] = X [k]和V [k] = Y [k]时，确定U [k]和V [k]是正确的值，z [k]的实部和虚部的符号， 被维护。 当U [k] X [k]或V [k] Y [k]确定U [k]或V [k]是不正确的值，z [k ]改变了。 最终的z [k]值被确定为软判决值。

公开(公告)号：KR101530000B1

公开(公告)日：2015-06-22

申请号：KR1020140122097

申请日：2014-09-15

Applicant: 연세대학교 산학협력단

Inventor： 김재석 ,  김현섭

IPC: H04L25/02 ,  H04L27/00 ,  H04B7/08

CPC classification number: H04L25/02 ,  H04L2201/06

Abstract: 본발명은신호검출장치및 방법, 그를이용한수신기및 통신시스템에관한것이다. 본발명의일 실시예에따른신호검출장치는다수의채널들을통해전송된신호를검출하는장치로서, 상기채널들중 기설정된개수의채널에대하여, 격자감소공간(lattice-reduced domain)에서, 해당채널을통해송신된심볼로추정되는송신추정심볼에대응하는지점에인접한격자지점을선택한뒤, 상기선택된격자지점을기초로패런츠노드를획득하고; 상기채널들중 나머지채널에대하여, 상기격자감소공간에서, 상기패런츠노드를시작으로하여순차간섭제거(successive interference cancellation)에의해차일드노드를획득하는노드획득부; 및획득된노드에대응하는후보심볼중에서최대우도(maximum likelihood)에해당하는심볼을검출하여송신심볼로결정하는최대우도검출부;를포함할수 있다.

Abstract translation: 本发明涉及一种用于检测信号的装置和方法，以及一种使用该信号的接收机和通信系统。 根据本发明的实施例，用于检测通过多个信道传送的信号的装置选择与发送估计符号相对应的点相邻的格点，该发送估计符号被估计为通过格子中相应信道发送的符号 相关于信道中的预设数量的信道的还原域，并且基于所选择的网格点获取父节点。 用于检测信号的装置包括：节点获取部分，用于通过连续的干扰消除，从网格减少域中的父节点开始，用于通道中的其余信道; 以及最大似然检测部分，用于检测与所获取的节点相对应的候选符号中对应于最大似然的符号，并将其确定为发送符号。

公开(公告)号：KR100801240B1

公开(公告)日：2008-02-04

申请号：KR1020060116837

申请日：2006-11-24

Applicant: 주식회사 에스씨티

Inventor： 진천덕

IPC: H04L27/26

CPC classification number: H04L27/2626 ,  H03M1/12 ,  H04L27/2647 ,  H04L2201/06

Abstract: A method and an apparatus for transmitting and receiving data in a multiband OFDM(Orthogonal Frequency Division Multiplexing) network are provided to reduce a data error by dividing a signal band into plural groups and transmitting the same signals in the same group. When a data is inputted, a scrambler(110) changes a frequency. A convolutional encoder(120) accumulates the data from the scrambler and outputs the accumulated result. A puncturer(130) removes a position bit of the data from the convolutional encoder to decrease a data size. A bit interleaver(140) decreases an error in the data from the puncturer. A constellation mapping module(150) allocates the data from the bit interleaver to a signal waveform. An IFFT module(160) performs an FFT(Fast Fourier Transform) on the data from the constellation mapping module. A DAC(170) converts the digital data from the IFFT(Inverse Fast Fourier Transform) module to an analog signal. A mixer(180) adds a time-frequency code to the signal from the DAC and transmits the added result through an antenna.

Abstract translation: 提供了一种用于在多频带OFDM（正交频分复用）网络中发送和接收数据的方法和装置，用于通过将信号频带划分成多个组并在同一组中发送相同的信号来减少数据误差。 当输入数据时，加扰器（110）改变频率。 卷积编码器（120）累积来自加扰器的数据并输出累积结果。 穿刺器（130）从卷积编码器移除数据的位置位以减小数据大小。 比特交织器（140）减少来自穿孔者的数据中的错误。 星座映射模块（150）将来自比特交织器的数据分配给信号波形。 IFFT模块（160）对来自星座映射模块的数据执行FFT（快速傅里叶变换）。 DAC（170）将来自IFFT（快速傅里叶逆变换）模块的数字数据转换为模拟信号。 混频器（180）将来自DAC的信号添加时间频率码，并通过天线发送添加的结果。

公开(公告)号：KR1020050062868A

公开(公告)日：2005-06-28

申请号：KR1020030093861

申请日：2003-12-19

Applicant: 엘지전자 주식회사

Inventor： 신종웅 ,  황용석 ,  김강호

IPC: H04N7/015 ,  H04N21/434 ,  H04L27/26

CPC classification number: H04N21/4382 ,  H04L1/0071 ,  H04L27/2649 ,  H04L2201/06 ,  H04N21/4383

Abstract: 본 발명은 DMB 수신기의 채널 복호기에 관한 것으로, 본 발명에 따르면, 전송된 신호가 OFDM 복조되고 주파수 역인터리빙된 신호를 입력받아 FIC 데이터와 MSC 데이터로 분리하고, 상기 분리된 FIC 데이터 및 MSC 데이터를 효율적으로 채널 복호하여 오디오/데이터/비디오 복호기로 전달함으로써, 다양한 데이터 레이트를 갖는 전송 신호를 끊김없이 효율적으로 복호하며, 이동 수신 성능이 높아지는 효과가 있다.

公开(公告)号：KR1020040025009A

公开(公告)日：2004-03-24

申请号：KR1020020056793

申请日：2002-09-18

Applicant: 대한민국(전남대학교총장)

Inventor： 김대진 ,  오영호 ,  박성우

IPC: H04N7/015

CPC classification number: H04L25/03267 ,  H04L1/0047 ,  H04L2025/03458 ,  H04L2025/03636 ,  H04L2201/06 ,  H04N5/4401

Abstract: PURPOSE: A grid type channel equalizer in connection with a viterbi decoder is provided to connect with a viterbi decoder, and to couple with an LMS decision feedback channel equalizer, then to automatically select an equalizer having a small output error, thereby improving channel equalization performance in a blind mode and removing signal distortions. CONSTITUTION: An LMS decision feedback channel equalizer(321) uses LMS algorithm by updating equalizer tap coefficients. A grid type decision feedback channel equalizer(322) uses a grid type for channel equalization. An error measurer(323) using segment synchronization measures errors of each equalizer output by using ATSC segment synchronization for output errors of the LMS decision feedback channel equalizer(321) and the grid type decision feedback channel equalizer(322). An equalizer output selector(324) automatically selects an equalizer having a small error based on measured results of the error measurer(323). A viterbi decoder(325) corrects a transmission error in a blind mode.

Abstract translation: 目的：提供与维特比解码器相关的网格型信道均衡器与维特比解码器连接，并与LMS判决反馈信道均衡器耦合，然后自动选择具有小输出误差的均衡器，从而提高信道均衡性能 处于盲模式并消除信号失真。 构成：LMS决策反馈信道均衡器（321）通过更新均衡器抽头系数来使用LMS算法。 网格型判决反馈信道均衡器（322）使用网格类型进行信道均衡。 使用段同步的误差测量器（323）通过对LMS判决反馈信道均衡器（321）和网格类型判定反馈信道均衡器（322）的输出错误使用ATSC段同步来测量每个均衡器输出的误差。 均衡器输出选择器（324）基于误差测量器的测量结果（323）自动选择具有小误差的均衡器。 维特比解码器（325）在盲模式下校正传输错误。

公开(公告)号：KR1020010059821A

公开(公告)日：2001-07-06

申请号：KR1019990067352

申请日：1999-12-30

Applicant: 주식회사 엘지이아이

Inventor： 이원철

IPC: H04N7/015

CPC classification number: H04L25/03019 ,  H03M13/1111 ,  H04L25/03286 ,  H04L2201/06

Abstract: PURPOSE: An adaptive decoder using signal-to-noise ratio(SNR) is provided to control received data having a high SNR (signal-to-noise ratio) by performing an adaptive modification of a MBEC (Max Bit Error Count) value according to SNR value of data received from an equalizer. CONSTITUTION: A soft decision demapper unit(100) performs a soft decision on data with a plurality of bits outputted from an equalizer. A decision logic unit(300) inputs a BER (Bit Error Count) calculated in a decoding unit(200) to feedback, and employs it to a repeater for adopting a synchronization at the decoding unit(200). A depuncture module unit(200) inserts dummy data to data outputted from the soft decision demapper unit(100), and changes a code ratio thereof. A viterbi decoding unit(220) decodes the data transformed from the depuncture module unit(210).

Abstract translation: 目的：提供一种使用信噪比（SNR）的自适应解码器，通过执行MBEC（最大位错误计数）值的自适应修改来控制具有高SNR（信噪比）的接收数据 从均衡器接收的数据的SNR值。 构成：软判决解映射器单元（100）对从均衡器输出的多个位执行对数据的软判定。 决定逻辑单元（300）输入在解码单元（200）中计算出的BER（比特误差计数）进行反馈，并将其应用于在解码单元（200）采用同步的中继器。 解穿孔模块单元（200）将伪数据插入到从软判决解映射器单元（100）输出的数据中，并改变其码率。 维特比解码单元（220）解码从解穿孔模块单元（210）变换的数据。