公开(公告)号：US20170117986A1

公开(公告)日：2017-04-27

申请号：US15397055

申请日：2017-01-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alberto Giuseppe PEROTTI ,  Branislav M. Popovic

IPC: H04L1/00 ,  H04W28/02

CPC classification number: H04L1/006 ,  H04L1/0042 ,  H04L1/005 ,  H04L1/0071 ,  H04W28/0236

Abstract: The present disclosure relates to a transmitter device and a receiver device. The transmitter device comprises a processor which is communicably coupled with a transmitter unit. The processor is configured to receive a set of Z data streams and select K data streams with the same channel quality from the set of Z data streams for transmission, where K≦Z. Thereafter for each information word and for each data stream k=0, . . . , K−1 the processor encodes, scrambles and superposes so as to obtain a first signal sU. Further, for each information word and for each data stream k=0, . . . , K−1 the processor interleaves, encodes, scrambles and superposes so as to obtain a second signal sV. The first signal sU and the second signal sV are combined by the processor into a single signal s for transmission. The transmitter unit of the transmitter device is configured to transmit the transmission signal s over a radio channel.

公开(公告)号：US09621189B2

公开(公告)日：2017-04-11

申请号：US14865119

申请日：2015-09-25

Applicant: Topcon Positioning Systems, Inc.

Inventor： Nikolay Afanasievich Vazhenin ,  Andrey Vladimirovich Veitsel ,  Alexey S. Lebedinsky ,  Ivan Andreevich Kirjanov

IPC: H03M13/00 ,  H03M13/11 ,  H04L1/00 ,  H03M13/37 ,  H03M13/45

CPC classification number: H03M13/1111 ,  H03M13/1128 ,  H03M13/3723 ,  H03M13/3746 ,  H03M13/458 ,  H04L1/005 ,  H04L1/0052 ,  H04L1/0057

Abstract: Method of identification and compensation for inversion of the input bit stream when decoding LDPC codes includes obtaining a code word of the LDPC code from a demodulator output and writing the code word into a buffer memory, decoding the code word, calculating a syndrome for each iteration when decoding, making an analysis of converging the weight of the syndrome, generating an inversion feature for the input bit stream based on this analysis, continuing the decoding, if the inversion feature for the input bit stream does not give evidence of detecting inversion, resetting, if the inversion feature for the input bit stream shows inversion, the LDPC decoder and analysis parameters for the convergence of the weight of the syndrome, reading next code word from the buffer memory, and producing an inversion of this code word, and feeding the word to the decoder input to implement the next decoding operation.

公开(公告)号：US20170070377A1

公开(公告)日：2017-03-09

申请号：US15123373

申请日：2015-02-27

Applicant: NTT DOCOMO, INC.

Inventor： Mamoru Sawahashi ,  Teruo Kawamura ,  Yoshihisa Kishiyama

IPC: H04L27/26

CPC classification number: H04L27/265 ,  H04J11/004 ,  H04L1/0048 ,  H04L1/005 ,  H04L25/03305 ,  H04L27/2602 ,  H04L27/2636 ,  H04L27/3488

Abstract: A user terminal with a transmission processing section that generates an SC-FDMA (Single Carrier Frequency Division Multiple Access) signal by blocking symbols that are arranged in a given time region at a symbol rate equal to or lower than a Nyquist rate. The transmission processing section converts the blocks into symbols that are multiplexed in a high density, in block units, in the time domain, by allowing an overlap between the symbols in the blocks. The user terminal also includes a transmission section that transmits the SC-FDMA signal to a radio base station to improve uplink throughput.

Abstract translation: 一种具有发送处理部分的用户终端，其通过以等于或低于奈奎斯特速率的符号速率通过以给定时间区域排列的符号来产生SC-FDMA（单载波频分多址）信号。 发送处理部通过允许块中的符号之间的重叠，将块转换为以时间域为单位以高密度多路复用的符号。 用户终端还包括将SC-FDMA信号发送到无线电基站以提高上行链路吞吐量的传输部分。

公开(公告)号：US09590768B2

公开(公告)日：2017-03-07

申请号：US14397889

申请日：2012-05-04

Applicant: George White ,  Ning He ,  Niklas Johansson ,  Cagatay Konuskan

Inventor： George White ,  Ning He ,  Niklas Johansson ,  Cagatay Konuskan

IPC: H04L27/06 ,  H04L1/00 ,  H04L1/18 ,  H04J11/00 ,  H04B1/10

CPC classification number: H04L1/005 ,  H04B1/10 ,  H04J11/004 ,  H04L1/1812

Abstract: A method, performed in a receiver device, for decoding transmissions of a set of coded information bits from a transmitter. The method includes deriving received symbols from first received data and second received data. The received symbols are converted to sets of soft coded bit estimates. The sets of soft coded bit estimates are combined to form a combined set of soft coded bit estimates. The combined set of soft coded bit estimates are decoded to form a set of soft information bit estimates. The set of soft information bit estimates are converted to form a set of binary bits. A determination is made whether the set of binary bits has been correctly or incorrectly decoded. Interference cancellation is performed on the received data, and the method is repeated until either the set of binary bits has been correctly decoded or a predefined maximum number of iterations is reached.

Abstract translation: 一种在接收机设备中执行的用于解码来自发射机的一组编码信息比特的传输的方法。 该方法包括从第一接收数据和第二接收数据导出接收符号。 所接收的符号被转换成软编码比特估计的集合。 软编码比特估计的组合形成软编码比特估计的组合。 软编码比特估计的组合组被解码以形成一组软信息比特估计。 软信息位估计集合被转换成一组二进制位。 确定二进制位的集合是否被正确地或不正确地解码。 对接收到的数据执行干扰消除，并且重复该方法，直到二进制位组被正确地解码或达到预定的最大迭代次数为止。

公开(公告)号：US20170033894A1

公开(公告)日：2017-02-02

申请号：US15223596

申请日：2016-07-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seok-Ki AHN ,  Jae-Yoel KIM ,  Chi-Woo LIM ,  Min JANG ,  Kwang-Taik KIM ,  Woo-Myoung PARK

IPC: H04L1/00

CPC classification number: H04L1/0016 ,  H03M13/1102 ,  H03M13/136 ,  H03M13/152 ,  H03M13/296 ,  H03M13/2978 ,  H03M13/635 ,  H03M13/6356 ,  H03M13/6516 ,  H03M13/6525 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0066

Abstract: A method and apparatus for channel encoding and channel decoding in a wireless communication system are provided. The channel encoding method includes generating a first parity set and a second parity set based on information bits, determining a number of additional parity bits based on a number of the information bits and a required coding rate, generating the determined number of additional parity bits using the information bits, and generating a codeword including the information bits, the first parity set, the second parity set, and the generated additional parity bits.

Abstract translation: 提供了一种用于无线通信系统中的信道编码和信道解码的方法和装置。 信道编码方法包括基于信息比特生成第一奇偶校验集和第二奇偶校验集，基于信息比特数和所需编码率确定附加奇偶校验位的数量，使用 信息比特，并且生成包括信息比特，第一奇偶校验集，第二奇偶校验集和生成的附加奇偶校验位的码字。

公开(公告)号：US09559873B2

公开(公告)日：2017-01-31

申请号：US14617087

申请日：2015-02-09

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： In Ki Lee ,  Min Hyuk Kim ,  Deock Gil Oh ,  Ji Won Jung

IPC: H04N21/2315 ,  H04L25/03 ,  H04L25/08 ,  H04L1/00

CPC classification number: H04L25/03 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0071 ,  H04L25/03318

Abstract: Disclosed are a signal receiving apparatus based on FTN and a signal decoding method thereof, and the apparatus includes: an equalizer calculating, when a signal sampled by Fast to Nyquist (FTN) is received on a communication channel, a posterior probability of information bits and calculating a log likelihood ratio by using the calculated posterior probability; a deinterleaver deinterleaving bit data output from the equalizer; a decoder correcting of signal interference of the data bits deinterleaved by the deinterleaver by using the LLR and decoding the corrected signal interference; and an interleaver interleaving data output from the decoder to provide the interleaved data to the equalizer.

Abstract translation: 公开了一种基于FTN的信号接收装置及其信号解码方法，该装置包括：均衡器，当在通信信道上接收到通过快速到奈奎斯特（FTN）采样的信号时，计算信息比特的后验概率， 通过使用计算的后验概率计算对数似然比; 解交织器对来自均衡器的比特数据进行解交织; 通过使用LLR对由解交织器解交错的数据位的信号干扰进行校正的解码器，对解调后的信号干扰进行解码; 交织器交织从解码器输出的数据，以将间隔的数据提供给均衡器。

公开(公告)号：US09559809B2

公开(公告)日：2017-01-31

申请号：US14766102

申请日：2014-02-11

Applicant: ORANGE

Inventor： Raphaël Visoz ,  Antoine Berthet ,  Baozhu Ning

IPC: H04L1/00 ,  H04L1/06 ,  H04L25/03 ,  H04L25/06 ,  H03M13/29

CPC classification number: H04L1/005 ,  H03M13/2957 ,  H04L1/0048 ,  H04L1/0071 ,  H04L1/06 ,  H04L25/03891 ,  H04L25/067 ,  H04L2025/03426

Abstract: One embodiment described herein relates to a method of predicting the performance of a communication system on a transmission channel. The system may comprise a transmitter suitable for applying bit interleaved coded modulation to information bits issued by a source to generate coded symbols, these coded symbols being transmitted by the transmitter over the transmission channel. The coded modulation may be based on a turbo-code comprising at least two constituent codes. The system may also comprise an iterative receiver, suitable for performing an iterative interference cancellation technique to process the coded symbols received from the transmission channel, the iterative receiver comprising an equalizer, a demodulator, and a turbo-decoder that are activated during each iteration performed by the iterative receiver. The turbo-decoder may comprise at least two decoders suitable for decoding the respective constituent codes of the turbo-code, the decoders being suitable for interchanging probabilistic quantities in an iterative manner.

Abstract translation: 本文描述的一个实施例涉及一种在传输信道上预测通信系统的性能的方法。 该系统可以包括适于将位交织编码调制应用于由源发出的信息位产生编码符号的发射机，这些编码符号由发射机在传输信道上发射。 编码调制可以基于包括至少两个组成码的turbo码。 该系统还可以包括迭代接收机，适用于执行迭代干扰消除技术来处理从传输信道接收到的编码符号，迭代接收机包括均衡器，解调器和turbo解码器，每个迭代执行在每次迭代期间被激活 通过迭代接收器。 turbo解码器可以包括适合于解码turbo码的各个组成码的至少两个解码器，所述解码器适于以迭代方式交换概率数量。

公开(公告)号：US09525513B2

公开(公告)日：2016-12-20

申请号：US14877558

申请日：2015-10-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Zhouyue Pi ,  Farooq Khan

IPC: G07F11/10 ,  H04L1/00 ,  H04L1/18 ,  H04L27/26 ,  H03M13/09 ,  H04B1/7107 ,  H04B7/06 ,  H04J11/00 ,  H04L1/04 ,  H04L5/00 ,  H04L25/02 ,  G06F11/10 ,  H04L1/06 ,  H04B7/04

CPC classification number: H04L1/0041 ,  G06F11/1004 ,  H03M13/09 ,  H04B1/7107 ,  H04B7/0439 ,  H04B7/0452 ,  H04B7/068 ,  H04J11/004 ,  H04L1/0003 ,  H04L1/0026 ,  H04L1/005 ,  H04L1/0061 ,  H04L1/0065 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/04 ,  H04L1/0618 ,  H04L1/1819 ,  H04L1/1867 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/2647

Abstract: Resource elements from multiple code blocks are separated into different groups, and decoding the code bits of the resource elements within each group without waiting for a completed reception of a transport block to start decoding. Coded bits from multiple code blocks are separated into different groups, and the code blocks containing coded bits within each group are decoded. A first CRC is attached to the transport block and a second CRC is attached to at least one code block from the transport block. An improved channel interleaver design includes mapping from coded bits of different code blocks to modulation symbols, and mapping from modulation symbols to time, frequency, and spatial resources, to make sure each code block to get roughly the same level of protection.

Abstract translation: 来自多个码块的资源元素被分成不同的组，并且对每个组中的资源元素的码位进行解码，而不用等待传输块的完整接收开始解码。 来自多个码块的编码比特被分成不同的组，并且包含每个组内的编码比特的码块被解码。 第一CRC附加到传输块，并且第二CRC附加到来自传输块的至少一个代码块。 改进的信道交织器设计包括从不同码块的编码比特到调制符号的映射，以及从调制符号到时间，频率和空间资源的映​​射，以确保每个码块获得大致相同的保护水平。

公开(公告)号：US20160344419A1

公开(公告)日：2016-11-24

申请号：US14716093

申请日：2015-05-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Se-ho MYUNG ,  Hong-sil JEONG ,  Kyung-joong KIM

IPC: H03M13/27 ,  H03M13/11 ,  H03M13/00 ,  H04L1/00

CPC classification number: H03M13/1165 ,  H03M13/1148 ,  H03M13/152 ,  H03M13/255 ,  H03M13/271 ,  H03M13/2732 ,  H03M13/2778 ,  H03M13/2792 ,  H03M13/2906 ,  H03M13/616 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/005 ,  H04L1/0051 ,  H04L1/0057 ,  H04L1/0058 ,  H04L1/0071

Abstract: A transmitting apparatus is provided. The transmitting apparatus includes: an encoder configured to generate a low-density parity check (LDPC) codeword by LDPC encoding based on a parity check matrix; an interleaver configured to interleave the LDPC codeword; and a modulator configured to map the interleaved LDPC codeword onto a modulation symbol, wherein the modulator is further configured to map a bit included in a predetermined bit group from among a plurality of bit groups constituting the LDPC codeword onto a predetermined bit of the modulation symbol.

公开(公告)号：US09503219B2

公开(公告)日：2016-11-22

申请号：US14331175

申请日：2014-07-14

Applicant: Topcon Positioning Systems, Inc.

Inventor： Nikolay Vazhenin ,  Andrey Veitsel ,  Ivan Kirianov

IPC: H03M13/00 ,  H04L1/00 ,  H04L1/20 ,  H03M13/11 ,  H04B17/336

CPC classification number: H03M13/612 ,  H03M13/1111 ,  H03M13/33 ,  H04B17/336 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/0063 ,  H04L1/20

Abstract: A method for measuring a signal-to-noise ratio when decoding Low Density Parity Check (LDPC) codes is provided. The method includes receiving from an input of a demodulator an input code word with “strong” or “weak” solutions, decoding the input code word in a LDPC decoder using a predetermined dependence of a mean number of iterations on the signal-to-noise ratio, recording a number of iterations performed during the decoding of the input code word, averaging derived values of the number of iterations for a specified time interval, estimating a signal-to-noise ratio based on averaged derived values of the number of iterations and based on the predetermined dependence of the mean number of iterations on the signal-to-noise ratio, and generating an output decoded code word.

Abstract translation: 提供了一种在解码低密度奇偶校验（LDPC）码时测量信噪比的方法。 该方法包括从解调器的输入端接收具有“强”或“弱”解的输入码字，使用平均迭代次数对信号噪声的预定依赖性对LDPC解码器中的输入码字进行解码 记录在输入代码字的解码期间执行的迭代次数，平均在特定时间间隔内的迭代次数的导出值，基于迭代次数的平均导出值估计信噪比，以及 基于平均迭代次数对信噪比的预定依赖性，并且生成输出解码码字。