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公开(公告)号:US10057008B2
公开(公告)日:2018-08-21
申请号:US15217756
申请日:2016-07-22
申请人: LG ELECTRONICS INC.
发明人: Jongseob Baek , Woosuk Ko , Seoyoung Back , Sungryong Hong
IPC分类号: H04L1/00 , H03M13/25 , H03M13/27 , H04B1/16 , H04L5/00 , H04L12/18 , G06F11/10 , H03M13/00 , H03M13/11 , H03M13/15
CPC分类号: H03M13/2732 , G06F11/10 , H03M13/1148 , H03M13/1165 , H03M13/152 , H03M13/253 , H03M13/255 , H03M13/271 , H03M13/2721 , H03M13/2742 , H03M13/2767 , H03M13/2792 , H03M13/618 , H03M13/6541 , H04B1/16 , H04L1/0041 , H04L1/0045 , H04L1/0058 , H04L1/0059 , H04L1/0065 , H04L1/0071 , H04L5/0044 , H04L12/18
摘要: The present invention provides a method of transmitting broadcast signals. The method includes, formatting, by an input formatting block, input streams into plural PLPs (Physical Layer Pipes); encoding, by an encoder, data in the plural PLPs; time interleaving, by a time interleaver, the encoded data in the plural PLPs, wherein the time interleaving includes: cell interleaving, by a cell interleaver, the encoded data by permuting cells in a FEC (Forward Error Correction) block in the plural PLPs; frame mapping, by a framer, the time interleaved data onto at least one signal frame; and waveform modulating, by a waveform block, the mapped data in the at least one signal frame and transmitting, by the waveform block, broadcast signals having the modulated data.
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2.
公开(公告)号:US20130318421A1
公开(公告)日:2013-11-28
申请号:US13955862
申请日:2013-07-31
发明人: Rohit Iyer SESHADRI , Mustafa EROZ , Lin-Nan LEE
IPC分类号: H03M13/27
CPC分类号: H03M13/2767 , H03M13/275 , H03M13/276 , H03M13/2789
摘要: A parameterized interleaver design process is provided, which optimizes the design for interleavers of any size, and can be completely specified using only a few design parameters. According to the parameterized interleaver design process an interleaver π(i) of a length N is generated. A number of subpermutation masks are defined, and a first intermediate interleaver permutation is partitioned into a number of subgroups, wherein the number of subgroups corresponds with the number of subpermutation masks. Each of the subgroups of the first intermediate interleaver permutation is partitioned into a number of further subgroups, and each of the subpermutation masks is applied to each of the further subgroups of a corresponding subgroup of the first intermediate interleaver permutation, resulting in a corresponding portion of a second intermediate interleaver permutation. The resulting interleaver π(i) is generated based at least in part on the first and second intermediate interleaver permutations.
摘要翻译: 提供了一种参数化的交织器设计过程,其优化了任何尺寸的交织器的设计,并且可以仅使用少量设计参数来完全指定。 根据参数化交织器设计处理,生成长度为N的交织器pi(i)。 定义了多个子鉴别掩码,并且将第一中间交织器置换分割成多个子组,其中子组的数量对应于子鉴别掩码的数量。 第一中间交织器置换的每个子组被划分成多个其他子组,并且每个子精确掩码被应用于第一中间交织器置换的对应子组的其他子组中的每一个,导致相应部分 第二中间交织器排列。 至少部分地基于第一和第二中间交织器排列来生成所产生的交织器pi(i)。
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3.
公开(公告)号:US08250432B2
公开(公告)日:2012-08-21
申请号:US13116403
申请日:2011-05-26
IPC分类号: H03M13/00
CPC分类号: H03M13/6561 , G11B20/18 , G11B20/1833 , H03M13/11 , H03M13/1102 , H03M13/1105 , H03M13/25 , H03M13/255 , H03M13/256 , H03M13/258 , H03M13/27 , H03M13/2767 , H03M13/2771 , H03M13/2785 , H03M13/2957 , H03M13/4123 , H03M13/4161 , H03M13/45 , H03M13/6362 , H04L1/0041 , H04L1/0045 , H04L1/005 , H04L1/0058 , H04L1/006 , H04L1/0066 , H04L1/0068 , H04L1/0071 , H04L1/1671 , H04L27/18 , H04L27/2602
摘要: Variable modulation within combined LDPC (Low Density Parity Check) coding and modulation coding systems. Variable modulation encoding of LDPC coded symbols is presented. In addition, LDPC encoding, that generates an LDPC variable code rate signal, may also be performed as well. The encoding can generate an LDPC variable code rate and/or modulation signal whose code rate and/or modulation may vary as frequently as on a symbol by symbol basis. Some embodiments employ a common constellation shape for all of the symbols of the signal sequence, yet individual symbols may be mapped according different mappings of the commonly shaped constellation; such an embodiment may be viewed as generating a LDPC variable mapped signal. In general, any one or more of the code rate, constellation shape, or mapping of the individual symbols of a signal sequence may vary as frequently as on a symbol by symbol basis.
摘要翻译: 组合LDPC(低密度奇偶校验)编码和调制编码系统中的可变调制。 提出了LDPC编码符号的可变调制编码。 此外,也可以执行生成LDPC可变码率信号的LDPC编码。 该编码可以生成其码率和/或调制可以像逐个符号一样频繁地变化的LDPC可变码率和/或调制信号。 一些实施例对信号序列的所有符号采用公共星座形状,但是可以根据共同形状的星座图的不同映射来映射各个符号; 这样的实施例可以被视为生成LDPC可变映射信号。 通常,信号序列的各个符号的码率,星座形状或映射中的任何一个或多个可以像逐个符号一样频繁地变化。
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4.
公开(公告)号:US07975202B2
公开(公告)日:2011-07-05
申请号:US11542484
申请日:2006-10-03
IPC分类号: H03M13/00
CPC分类号: H03M13/6561 , G11B20/18 , G11B20/1833 , H03M13/11 , H03M13/1102 , H03M13/1105 , H03M13/25 , H03M13/255 , H03M13/256 , H03M13/258 , H03M13/27 , H03M13/2767 , H03M13/2771 , H03M13/2785 , H03M13/2957 , H03M13/4123 , H03M13/4161 , H03M13/45 , H03M13/6362 , H04L1/0041 , H04L1/0045 , H04L1/005 , H04L1/0058 , H04L1/006 , H04L1/0066 , H04L1/0068 , H04L1/0071 , H04L1/1671 , H04L27/18 , H04L27/2602
摘要: Variable modulation with LDPC (Low Density Parity Check) coding provides for generation of LDPC coded symbols having different respective code rates and/or modulations. In addition, appropriate LDPC encoding, that generates an LDPC variable code rate signal, may also be performed as well. The encoding can generate an LDPC variable code rate and/or modulation signal whose code rate and/or modulation may vary as frequently as on a symbol by symbol basis. Some embodiments employ a common constellation shape for all of the symbols of the signal sequence, yet individual symbols may be mapped according different mappings of the commonly shaped constellation; such an embodiment may be viewed as generating a LDPC variable mapped signal. In general, any one or more of the code rate, constellation shape, and/or mapping of the individual symbols of a signal sequence may vary as frequently as on a symbol by symbol basis.
摘要翻译: 使用LDPC(低密度奇偶校验)编码的可变调制提供具有不同的相应代码率和/或调制的LDPC编码符号的生成。 此外,也可以执行生成LDPC可变码率信号的适当的LDPC编码。 该编码可以生成其码率和/或调制可以像逐个符号一样频繁地变化的LDPC可变码率和/或调制信号。 一些实施例对信号序列的所有符号采用公共星座形状,但是可以根据共同形状的星座图的不同映射来映射各个符号; 这样的实施例可以被视为生成LDPC可变映射信号。 通常,信号序列的各个符号的码率,星座形状和/或映射中的任何一个或多个可以像按符号依据一样频繁地变化。
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公开(公告)号:US07360040B2
公开(公告)日:2008-04-15
申请号:US11231635
申请日:2005-09-21
CPC分类号: H04L1/005 , H03M13/258 , H03M13/27 , H03M13/2767 , H03M13/2771 , H03M13/2785 , H03M13/2957 , H03M13/4161 , H04L1/0066 , H04L1/0068 , H04L1/0071
摘要: Interleaver for iterative decoder. A memory management scheme allows for single plane/single port memory devices to be used by the interleaver. The design is adaptable to soft-in soft-out (SISO) decoders that perform iterative decoding. The interleaver may be implemented within communication devices that implement two distinct SISOs that operate cooperatively or within communication devices that employ a single SISO (in a recycled embodiment) that functionally performs the analogous decoding operations that would be performed by the two distinct SISO implementation. The use of single plane/single port memory devices by the interleaver allows for a great deal of savings from many perspectives: the sizes of the required interleaver memory and the interleaver pattern memory are both cut in half using this approach, and a cost savings may also be realized, in that, cheaper, slower memories may be used since each respective interleaver memory is read only every other cycle.
摘要翻译: 交织器用于迭代解码器。 存储器管理方案允许单平面/单端口存储器件由交织器使用。 该设计适用于执行迭代解码的软进软(SISO)解码器。 交织器可以在实现两个不同的SISO的通信设备中实现,这两个SISO协作地或在使用在功能上执行由两个不同的SISO实现执行的类似解码操作的单个SISO(在回收的实施例中)的通信设备内。 通过交织器使用单平面/单端口存储器件允许从许多角度大量节省:使用这种方法所需的交织器存储器和交织器模式存储器的尺寸都被削减了一半,并且可以节省成本 也可以实现,由于每个相应的交织器存储器仅在每隔一个周期读取,所以可以使用更便宜的较慢的存储器。
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公开(公告)号:US20080059727A1
公开(公告)日:2008-03-06
申请号:US11980916
申请日:2007-10-31
申请人: Mustafa Eroz , A. Hammons , Feng-Wen Sun
发明人: Mustafa Eroz , A. Hammons , Feng-Wen Sun
IPC分类号: G06F12/00
CPC分类号: H03M13/271 , H03M13/2735 , H03M13/2746 , H03M13/276 , H03M13/2767 , H03M13/2771 , H03M13/2789 , H03M13/2957
摘要: A method of interleaving blocks of indexed data of varying length is disclosed. The method includes the steps of: providing a set of basic Interleavers comprising a family of one or more permutations of the indexed data and having a variable length; selecting one of the basic Interleavers based upon a desired Interleaver length L; and adapting the selected basic Interleaver to produce an Interleaver having the desired Interleaver length L.
摘要翻译: 公开了一种交织具有不同长度的索引数据块的方法。 该方法包括以下步骤:提供一组基本交错器,其包括索引数据的一个或多个排列的族,并具有可变长度; 基于所需的交织器长度L选择基本交织器之一; 并且使所选择的基本交织器适配以产生具有期望的交织器长度L的交织器。
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7.
公开(公告)号:US07139964B2
公开(公告)日:2006-11-21
申请号:US10669066
申请日:2003-09-23
IPC分类号: H03M13/00
CPC分类号: H03M13/6561 , G11B20/18 , G11B20/1833 , H03M13/11 , H03M13/1102 , H03M13/1105 , H03M13/25 , H03M13/255 , H03M13/256 , H03M13/258 , H03M13/27 , H03M13/2767 , H03M13/2771 , H03M13/2785 , H03M13/2957 , H03M13/4123 , H03M13/4161 , H03M13/45 , H03M13/6362 , H04L1/0041 , H04L1/0045 , H04L1/005 , H04L1/0058 , H04L1/006 , H04L1/0066 , H04L1/0068 , H04L1/0071 , H04L1/1671 , H04L27/18 , H04L27/2602
摘要: Variable modulation within combined LDPC (Low Density Parity Check) coding and modulation coding systems. A novel approach is presented for variable modulation encoding of LDPC coded symbols. In addition, LDPC encoding, that generates an LDPC variable code rate signal, may also be performed as well. The encoding can generate an LDPC variable code rate and/or modulation signal whose code rate and/or modulation may vary as frequently as on a symbol by symbol basis. Some embodiments employ a common constellation shape for all of the symbols of the signal sequence, yet individual symbols may be mapped according different mappings of the commonly shaped constellation; such an embodiment may be viewed as generating a LDPC variable mapped signal. In general, any one or more of the code rate, constellation shape, or mapping of the individual symbols of a signal sequence may vary as frequently as on a symbol by symbol basis.
摘要翻译: 组合LDPC(低密度奇偶校验)编码和调制编码系统中的可变调制。 提出了一种用于LDPC编码符号的可变调制编码的新颖方法。 此外,也可以执行生成LDPC可变码率信号的LDPC编码。 该编码可以生成其码率和/或调制可以像逐个符号一样频繁地变化的LDPC可变码率和/或调制信号。 一些实施例对信号序列的所有符号采用公共星座形状,但是可以根据共同形状的星座图的不同映射来映射各个符号; 这样的实施例可以被视为生成LDPC可变映射信号。 通常,信号序列的各个符号的码率,星座形状或映射中的任何一个或多个可以像逐个符号一样频繁地变化。
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公开(公告)号:US20060156094A1
公开(公告)日:2006-07-13
申请号:US11016643
申请日:2004-12-17
申请人: Dayong Chen
发明人: Dayong Chen
IPC分类号: G11C29/00
CPC分类号: H03M13/6502 , H03M13/2703 , H03M13/2767
摘要: A method of mapping input bit positions in an input sequence to output bit positions in an output sequence uses compressed mapping sequences stored in memory derived from a predetermined mapping function. The mapping function is decompressed into periodic component functions that are used to generate the compressed mapping sequences. Each compressed mapping sequence comprises a plurality of partial mapping values that represent one period of a corresponding component function or group of component functions. Partial mapping values are selected from each compressed mapping sequence based on a bit index of the current input bit and summed or otherwise combined to get an output index.
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公开(公告)号:US07032164B2
公开(公告)日:2006-04-18
申请号:US10264766
申请日:2002-10-04
IPC分类号: H03M13/03
CPC分类号: H04L1/005 , H03M13/256 , H03M13/258 , H03M13/27 , H03M13/2767 , H03M13/2771 , H03M13/2785 , H03M13/2957 , H03M13/4123 , H03M13/4161 , H04L1/006 , H04L1/0066 , H04L1/0068 , H04L1/0071
摘要: Efficient design to calculate extrinsic information for Soft-In-Soft-Out (SISO) decoder. A design provides for very efficient performing extrinsic value calculation when performing iterative decoding. The design also accommodates a variety of rate controls each having varying bandwidth efficiencies. By grouping and capitalizing on the commonality of many of the intermediate terms that are employed when calculating the extrinsic values needed to perform iterative decoding, a great saving in terms of hardware may be achieved. In addition, this also provides a great deal of improvement in terms of operational speed and overall decoder system efficiency. The design is also adaptable to assist in performing decoding input symbols having multiple bits; a single design may be employed to accommodate different input symbols that have different numbers of bits. The extrinsic calculation employs min* processing in one embodiment; however, the design may also be performed using max*, min, or max processing.
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公开(公告)号:US06993699B2
公开(公告)日:2006-01-31
申请号:US10352515
申请日:2003-01-28
CPC分类号: H03M13/2984 , H03M13/2707 , H03M13/275 , H03M13/2764 , H03M13/2767 , H03M13/2771 , H03M13/2782 , H03M13/2785 , H03M13/6505 , H04L1/005 , H04L1/0066 , H04L1/0071
摘要: In an apparatus such as a turbo decoding apparatus in which it is necessary to carry out interleave operation and deinterleave operation, there are provided a memory unit (5) and a memory control unit (12) capable of changing data writing order and data reading order with respect to the memory unit (5) depending on whether data is to be interleaved or deinterleaved. With this arrangement, the single unit of memory (5) can function as an interleaver and a deinterleaver, thereby reducing the size and cost the device.
摘要翻译: 在需要执行交错操作和解交织操作的Turbo解码装置等装置中,设置有能够改变数据写入顺序和数据读取顺序的存储器单元(5)和存储器控制单元(12) 相对于存储器单元(5),取决于数据是交织还是解交织。 通过这种布置,单个存储器单元(5)可以用作交织器和解交织器,从而减小设备的尺寸和成本。
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