公开(公告)号：US20190081642A1

公开(公告)日：2019-03-14

申请号：US16105689

申请日：2018-08-20

Applicant: Western Digital Technologies, Inc.

Inventor： Yiming Chen ,  Anantha Raman Krishnan

IPC: H03M13/29 ,  H03M13/11 ,  H03M13/27 ,  H03M13/41 ,  H03M13/25 ,  G11B5/596 ,  H03M13/35 ,  H03M13/00 ,  G11B20/18

CPC classification number: H03M13/2906 ,  G11B5/59616 ,  G11B2020/1863 ,  H03M13/1102 ,  H03M13/13 ,  H03M13/256 ,  H03M13/27 ,  H03M13/2742 ,  H03M13/2757 ,  H03M13/2792 ,  H03M13/2957 ,  H03M13/31 ,  H03M13/356 ,  H03M13/4138 ,  H03M13/6325 ,  H03M13/6513 ,  H03M13/6516

Abstract: A data storage device is disclosed comprising a storage medium. Input data is encoded according to at least one channel code constraint to generate first data and second data. The first data is encoded into a first codeword, and the second data is encoded into a second codeword, wherein a first code rate of the first codeword is less than a second code rate of the second codeword. The first codeword and the second codeword are interleaved to generate an interleaved codeword, and the interleaved codeword is written to the storage medium.

公开(公告)号：US20180302261A1

公开(公告)日：2018-10-18

申请号：US16014413

申请日：2018-06-21

Applicant: SHENZHEN SUPER DATA LINK TECHNOLOGY LTD.

Inventor： Ruopeng LIU ,  Chunlin JI ,  Shasha ZHANG

IPC: H04L27/26 ,  H04L25/02

CPC classification number: H04L27/2675 ,  H03M13/256 ,  H04L1/00 ,  H04L5/06 ,  H04L25/0202 ,  H04L25/03203 ,  H04L25/497 ,  H04L27/2602 ,  H04L27/2657 ,  H04L27/2671

Abstract: A method includes: receiving a to-be-decoded symbol sequence, where the to-be-decoded symbol sequence includes N symbols; dividing the received to-be-decoded symbol sequence into a first symbol sequence and a second symbol sequence; calculating first distances between the first symbol sequence and each of corresponding 2K ideal superimposed symbol sequences, and obtaining paths corresponding to relatively small distances based on the first distances; sequentially performing sequence detection on each symbol in the second symbol sequence based on the paths corresponding to the 2k-1 relatively small distances, calculating second distances between each symbol in the second symbol sequence and each ideal symbol sequence, and after the sequence detection is performed on a last symbol, obtaining an ideal symbol sequence corresponding to a minimum distance based on the second distances; and using the ideal symbol sequence corresponding to the minimum distance as an output symbol sequence.

公开(公告)号：US10056920B1

公开(公告)日：2018-08-21

申请号：US15157289

申请日：2016-05-17

Applicant: Western Digital Technologies, Inc.

Inventor： Yiming Chen ,  Anantha Raman Krishnan

IPC: G11C29/00 ,  H03M13/29 ,  H03M13/27 ,  H03M13/41 ,  H03M13/25 ,  H03M13/11

CPC classification number: H03M13/2906 ,  G11B5/59616 ,  G11B2020/1863 ,  H03M13/1102 ,  H03M13/13 ,  H03M13/256 ,  H03M13/27 ,  H03M13/2742 ,  H03M13/2757 ,  H03M13/2792 ,  H03M13/2957 ,  H03M13/31 ,  H03M13/356 ,  H03M13/4138 ,  H03M13/6325 ,  H03M13/6513 ,  H03M13/6516

Abstract: A data storage device is disclosed comprising a storage medium. Input data is encoded according to at least one channel code constraint to generate first data and second data. The first data is encoded into a first codeword, and the second data is encoded into a second codeword, wherein a first code rate of the first codeword is less than a second code rate of the second codeword. The first codeword and the second codeword are interleaved to generate an interleaved codeword, and the interleaved codeword is written to the storage medium.

公开(公告)号：US20180145704A1

公开(公告)日：2018-05-24

申请号：US15577486

申请日：2016-05-27

Applicant: Sony Corporation

Inventor： Makiko Yamamoto

IPC: H03M13/27 ,  H04L27/36 ,  H04L1/00

CPC classification number: H03M13/27 ,  H03M13/23 ,  H03M13/256 ,  H03M13/271 ,  H03M13/356 ,  H03M13/41 ,  H04L1/00 ,  H04L1/0071 ,  H04L27/3494 ,  H04L27/36

Abstract: A data processing apparatus, a data processing method, and a program are disclosed. They improve communication performance by performing bit interleaving suitable for a modulation method that is a non-uniform constellation. One example of a data processing apparatus includes a mapping unit configured to generate a second bit sequence by mapping a first bit sequence to any symbol on a complex plane corresponding to a NUC modulation method, an inter-symbol interleaving unit configured to generate a third bit sequence by performing inter-symbol interleaving to the second bit sequence, an intra-symbol interleaving unit configured to generate a fourth bit sequence by performing intra-symbol interleaving for shifting M bits as a whole of the third bit sequence per a same number of M bits as the bit number M representing the symbol, and a modulation unit configured to wirelessly transmit the fourth bit sequence according to the NUC modulation method.

公开(公告)号：USRE46674E1

公开(公告)日：2018-01-16

申请号：US14549455

申请日：2014-11-20

Applicant: LG ELECTRONICS INC.

Inventor： Il Soo Cho ,  Hyeon Cheol Cho ,  Jong Sun Park ,  In Hwan Choi ,  Hyoung Gon Lee ,  Won Gyu Song ,  Seung Man Kim ,  Jong Moon Kim ,  Jin Woo Kim ,  Kook Yeon Kwak ,  Byoung Gill Kim

IPC: H04L27/00 ,  H04H20/57 ,  H04H20/22

CPC classification number: H04H20/57 ,  H03M13/253 ,  H03M13/256 ,  H03M13/2936 ,  H03M13/6538 ,  H04B7/0802 ,  H04H20/22 ,  H04H60/07 ,  H04H2201/60 ,  H04L1/00 ,  H04L1/0054 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/0065 ,  H04L1/0075 ,  H04L1/06

Abstract: A broadcast receiving system capable of receiving mobile broadcast data and a method for processing broadcast signals are disclosed. The broadcast receiving system includes N number of antenna elements, a demodulator, a transmission parameter detector, and a block decoder. The N number of antenna elements receives each of the broadcast signals. The demodulator demodulates the broadcast signal having greater signal strength among each of the received broadcast signals. The transmission parameter detector detects the transmission parameter. The block decoder symbol-decodes the mobile broadcast service data included in the received broadcast signal in block units, based upon the detected transmission parameter.

公开(公告)号：US20170286250A1

公开(公告)日：2017-10-05

申请号：US15631869

申请日：2017-06-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Chen ,  Jiangwei Man ,  Li Zeng

IPC: H04B10/69 ,  H04B3/23 ,  H03M13/25 ,  G01R31/30 ,  H04L25/03

CPC classification number: H04B10/6971 ,  G01R31/3004 ,  G01R31/3016 ,  H03M13/256 ,  H04B3/23 ,  H04L25/03038 ,  H04L25/03057 ,  H04L25/03267 ,  H04L2025/03617

Abstract: A signal compensation method and device, where the method includes receiving a signal sequence suffering from intersymbol interference (ISI), setting a first filtering coefficient to perform filter compensation on the received signal sequence to obtain a first compensation signal sequence, setting a balance filtering coefficient to perform filter compensation on the first compensation signal sequence to obtain a balance compensation result, where the balance filtering coefficient is obtained by adjusting, according to a first compensation error, a balance filtering coefficient set last time, performing sequence estimation on the balance compensation result and outputting the balance compensation result, where the first compensation error adjusts the balance filtering coefficient set to perform filter compensation on the first compensation signal sequence in an iterative manner, thereby effectively compensating for the signal sequence suffering from the ISI, and improving performance of an optical fiber communications system.

公开(公告)号：US09602134B2

公开(公告)日：2017-03-21

申请号：US14314774

申请日：2014-06-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyun-Sik Kim ,  Young-Jin Cho

IPC: H03M13/11 ,  G06F11/10 ,  H03M13/17 ,  H03M13/37 ,  H03M13/00 ,  G11C29/04 ,  H03M13/15 ,  H03M13/19 ,  H03M13/23 ,  H03M13/25

CPC classification number: H03M13/1128 ,  G06F11/1048 ,  G06F11/1068 ,  G11C2029/0411 ,  H03M13/1105 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/17 ,  H03M13/19 ,  H03M13/23 ,  H03M13/251 ,  H03M13/256 ,  H03M13/3715 ,  H03M13/3738 ,  H03M13/6502

Abstract: An operating method of an ECC decoder includes receiving first chunk data and second chunk data from a nonvolatile memory device, the second chunk data subsequent to the first chunk data, performing error correction on the first chunk data, determining if the first chunk data includes an uncorrectable error bit and determining not to perform error correction on the second chunk data in response to the first chunk data including the uncorrectable error bit.

公开(公告)号：US20160182266A1

公开(公告)日：2016-06-23

申请号：US14979332

申请日：2015-12-22

Applicant: QUALCOMM Incorporated

Inventor： Peter Gaal ,  Tingfang Ji ,  Hao Xu

IPC: H04L27/20 ,  H04B1/04 ,  H04B1/40 ,  H04J1/06

CPC classification number: H04L27/2042 ,  H03M13/256 ,  H04L27/20 ,  H04L27/2614 ,  H04L27/2627 ,  H04L27/3411

Abstract: Various aspects described herein relate to generating a waveform for transmitting in wireless communications. A plurality of segments of a waveform are generated. An overlap-and-add is performed in at least a phase domain at one or more boundaries between the plurality of segments. The waveform can be transmitted.

Abstract translation: 本文描述的各个方面涉及产生用于在无线通信中发送的波形。 产生多个波形段。 在多个片段之间的一个或多个边界处的至少相位域中执行重叠和加法。 可以传输波形。

公开(公告)号：US09337868B2

公开(公告)日：2016-05-10

申请号：US14336074

申请日：2014-07-21

Applicant: NEC Laboratories America, Inc. ,  NEC Corporation

Inventor： Shaoliang Zhang ,  Fatih Yaman ,  Yoshihisa Inada ,  Takaaki Ogata ,  Takanori Inoue

IPC: H03M13/00 ,  H03M13/11 ,  H04L1/00 ,  H03M13/25 ,  H03M13/29 ,  H03M13/41

CPC classification number: H03M13/1111 ,  H03M13/256 ,  H03M13/2957 ,  H03M13/4138 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/0064 ,  H04L1/0076

Abstract: At a receiver side, to enhance the performance of concatenated LDPC and TCM coding, an iterative decoding between TCM decoder and LDPC decoder enables improvement in the reliability of received LLRs of each symbol after each iteration. A SOVA output of the TCM is used for LDPC decoding, and then the updated LLRs from LDPC decoder are further looped back to the TCM decoder for the next iteration. In such a manner, the decoding performance could be significantly improved after just several iterations.

Abstract translation: 在接收机侧，为了提高级联LDPC和TCM编码的性能，TCM解码器和LDPC解码器之间的迭代解码器能够在每次迭代后提高每个符号的接收LLR的可靠性。 TCM的SOVA输出用于LDPC解码，然后来自LDPC解码器的更新的LLR进一步循环回TCM解码器进行下一次迭代。 以这种方式，在几次迭代之后，解码性能可以显着提高。

公开(公告)号：US20160080112A1

公开(公告)日：2016-03-17

申请号：US14954248

申请日：2015-11-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lijia Zhang ,  Yuanda Huang

IPC: H04L1/00

CPC classification number: H04L1/0054 ,  H03M13/256 ,  H04L1/0052 ,  H04L1/006

Abstract: Embodiments of the present invention relate to the field of communications, and provide a decoding method and a decoder, which are used to reduce decoding complexity. The method includes: receiving a to-be-decoded signal; performing region decision on the to-be-decoded signal according to a region decision rule formed by S region decision formulas, to acquire a region decision result; acquiring N constellation points according to the decision result, where the N constellation points are separately constellation points that are in the N subsets and that are closest to the to-be-decoded signal; acquiring N non-encoded bits corresponding to the N constellation points, and branch metrics between the to-be-decoded signal and the N constellation points; and performing Viterbi decoding based on the branch metrics and the N non-encoded bits, and outputting a decoding result corresponding to the to-be-decoded signal. The present invention is applicable to a signal decoding scenario.

Abstract translation: 本发明的实施例涉及通信领域，并且提供用于降低解码复杂度的解码方法和解码器。 该方法包括：接收待解码信号; 根据由S区域决策公式形成的区域判定规则对待解码信号进行区域决定，以获取区域判定结果; 根据决策结果获取N个星座点，其中N个星座点分别是在N个子集中并且最接近待解码信号的星座点; 获取对应于N个星座点的N个非编码比特，以及待解码信号和N个星座点之间的分支度量; 以及基于所述分支度量和所述N个未编码比特执行维特比解码，并且输出与待解码信号相对应的解码结果。 本发明适用于信号解码场景。