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    Low delay channel codes for correcting bursts of lost packets
    1.
    发明授权
    Low delay channel codes for correcting bursts of lost packets 失效
    用于校正丢包的突发的低延迟信道码

    公开(公告)号：US06694478B1

    公开(公告)日：2004-02-17

    申请号：US09707686

    申请日：2000-11-07

    申请人： Emin Martinian ,  Carl-Erik W. Sundberg

    发明人： Emin Martinian ,  Carl-Erik W. Sundberg

    IPC分类号： H03M1303

    CPC分类号： H04L1/0057 ,  H03M13/2721 ,  H03M13/373 ,  H03M13/3761 ,  H03M13/6502 ,  H04L1/0059 ,  H04L1/0061 ,  H04L1/008 ,  H04L65/607 ,  H04L65/80

    摘要： A method and apparatus for coding and decoding a sequence of data packets with use of a novel class of forward error correcting codes having coding rates greater than 1/2 which nonetheless provide relatively high levels of channel protection against burst erasures with a relatively low decoding delay. In accordance with certain illustrative encoder embodiments of the present invention, the source information contained in each of a plurality of packets to be coded is similarly divided into a plurality of (similar) corresponding portions, and “checksums” are computed over multiple data packets, each such checksum being based on different (i.e., non-corresponding) portions of at least two of the multiple packets. These “checksums” are then advantageously appended to various subsequent data packets to be coded. By using different portions of multiple packets from which the checksums are computed, forward error correcting codes having rates greater than 1/2 which provide high levels of channel protection against burst erasures with relatively low decoding delays are advantageously provided. In accordance with illustrative decoder embodiments of the present invention, erased data packets may be regenerated based on the decoding of one or more subsequent (correctly received) data packets which include such appended “checksum” data.

    摘要翻译： 一种用于使用具有大于1/2的编码率的新颖的前向纠错码对数据分组序列进行编码和解码的方法和装置，尽管如此，它们以相对低的解码延迟提供相对较高级别的信道保护以防突发擦除 。 根据本发明的某些说明性编码器实施例，包含在要被编码的多个分组中的每一个的源信息被类似地分成多个（相似的）对应部分，并且通过多个数据分组来计算“校验和” 每个这样的校验和基于多个分组中的至少两个的不同（即非对应）部分。 这些“校验和”随后被有利地附加到要被编码的各种随后的数据分组。 通过使用计算校验和的多个分组的不同部分，有利地提供了具有大于1/2的速率的前向纠错码，其提供具有相对低的解码延迟的高级信道保护以防突发擦除。 根据本发明的说明性解码器实施例，可以基于包括这种附加的“校验和”数据的一个或多个后续（正确接收的）数据分组的解码来再生擦除的数据分组。

    Channel classification and rate adaptation for SU-MIMO systems
    3.
    发明授权
    Channel classification and rate adaptation for SU-MIMO systems 有权
    SU-MIMO系统的信道分类和速率适配

    公开(公告)号：US08451951B2

    公开(公告)日：2013-05-28

    申请号：US12538736

    申请日：2009-08-10

    申请人： Giuseppe Caire ,  Carl-Erik W. Sundberg ,  Haralabos Papadopoulos ,  Sean A. Ramprashad

    发明人： Giuseppe Caire ,  Carl-Erik W. Sundberg ,  Haralabos Papadopoulos ,  Sean A. Ramprashad

    IPC分类号： H04L27/06 ,  H04B1/00

    CPC分类号： H04L1/0025 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0036

    摘要： A method, apparatus and system are disclosed herein for channel classification and adaptation. In one embodiment, the system comprises a base station having a transmitter that is operable to transmit wireless signals using a plurality of transmission options; and a user terminal having a receiver that is operable to receive and decode wireless signals using a plurality of receiver algorithms, where the user terminal is operable to receive communications from the transmitter over a multiple-input, multiple output (MIMO) channel, to select at least one coding mode to be used by the transmitter on the channel based on rates achievable using MIMO transmission, in view of the channel information, using different combinations of one of the plurality of receiver algorithms and one of the plurality of transmission options, and to send information to identify the at least one coding mode to the base station using a feedback channel, each coding mode specifying at least an encoder to be used by the transmitter for the channel.

    摘要翻译： 本文公开了用于信道分类和适配的方法，装置和系统。 在一个实施例中，该系统包括具有可操作以使用多个传输选项传输无线信号的发射机的基站; 以及具有接收机的用户终端，所述接收机可操作以使用多个接收机算法来接收和解码无线信号，其中所述用户终端可操作以通过多输入多输出（MIMO）信道从所述发射机接收通信，以选择 考虑到信道信息，使用多个接收机算法中的一个接收机算法和多个传输选项之一的不同组合，基于信道上的发射机使用的至少一个编码模式，使用MIMO传输可实现的速率，以及 使用反馈信道向基站发送用于识别至少一个编码模式的信息，每个编码模式至少指定要由发射机用于信道的编码器。

    Adaptive forward-backward soft output M-algorithm receiver structures
    4.
    发明授权
    Adaptive forward-backward soft output M-algorithm receiver structures 有权
    自适应前向后退软输出M算法接收机结构

    公开(公告)号：US08279954B2

    公开(公告)日：2012-10-02

    申请号：US12335409

    申请日：2008-12-15

    申请人： Haralabos Papadopoulos ,  Carl-Erik W. Sundberg

    发明人： Haralabos Papadopoulos ,  Carl-Erik W. Sundberg

    IPC分类号： H04K1/10

    CPC分类号： H03M13/2957 ,  H03M13/1102 ,  H03M13/23 ,  H03M13/3707 ,  H03M13/3955 ,  H03M13/6331 ,  H03M13/6375 ,  H04L1/0048 ,  H04L1/0631 ,  H04L27/2601

    摘要： A method and apparatus is disclosed herein for forward-backward SOMA techniques. In one embodiment, the apparatus is a receiver comprising: an inner decoder structure having a soft output M-algorithm (SOMA) based multiple-in multiple-out (MIMO) joint demapper that uses a SOMA-based MIMO detection process to perform joint inner demapping over each tone, where the SOMA-based MIMO joint demapper is operable to identify a best candidate among a number of candidates by searching a detection tree for each tone using a forward pass through the detection tree, where only a number of best alternatives from every level of the tree are expanded and where soft-output related information is collected and stored, and to perform a second pass, following the forward pass, during which soft-output is computed for each bit; and an outer decoder operable with the SOMA-based inner decoder to perform iterative decoding.

    摘要翻译： 本文中公开了用于前向后向SOMA技术的方法和装置。 在一个实施例中，该装置是一种接收机，包括：内部解码器结构，其具有基于SOMA的MIMO检测过程的软输出M算法（SOMA）的多输入多输出（MIMO）联合解映射器，以执行联合内部 对每个音调进行解映射，其中基于SOMA的MIMO联合解映射器可操作以通过使用通过检测树的前向通过搜索每个音调的检测树来识别多个候选中的最佳候选，其中只有多个最佳替代方案 树的每个级别被扩展并且在其中收集和存储软输出相关信息，并且在正向传递之后执行第二遍，在该过程期间为每个位计算软输出; 以及可以与基于SOMA的内部解码器一起执行迭代解码的外部解码器。

    Adaptive MaxLogMAP-type receiver structures
    5.
    发明授权
    Adaptive MaxLogMAP-type receiver structures 有权
    自适应MaxLogMAP型接收机结构

    公开(公告)号：US08064548B2

    公开(公告)日：2011-11-22

    申请号：US12121634

    申请日：2008-05-15

    申请人： Carl-Erik W. Sundberg ,  Haralabos Papadopoulos

    发明人： Carl-Erik W. Sundberg ,  Haralabos Papadopoulos

    IPC分类号： H04L27/06

    CPC分类号： H03M13/3905 ,  H04L1/005 ,  H04L1/0631 ,  H04L25/03171 ,  H04L25/03305 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/2653 ,  H04L2025/03414 ,  H04L2025/0342 ,  H04L2025/03426 ,  H04L2025/03726

    摘要： A method and apparatus is disclosed herein for adaptive MaclogMAP-type receiver structures. In one embodiment, a device comprises a receiver to receive information-bearing signals from the transmitter wirelessly transmitted using OFDM and bit interleaved coded modulation, and the receiver comprises an inner decoder structure having a multiple-in multiple-out (MIMO) joint demapper to perform most likely transmitted symbol estimation using a modified MaxLogMAP process that is operable to adapt a degree of metric correction based on quality of OFDM tones.

    摘要翻译： 本文公开了一种用于自适应MaclogMAP型接收机结构的方法和装置。 在一个实施例中，设备包括接收机，用于从使用OFDM和比特交织编码调制器无线发射的发射机接收信息承载信号，并且接收机包括具有多输入多输出（MIMO）联合解映射器的内部解码器结构， 使用修改的MaxLogMAP处理执行最可能的发送符号估计，该处理可操作以基于OFDM音调的质量来适应一定程度的度量校正。

    RECEIVER TERMINAL DRIVEN JOINT ENCODER AND DECODER MODE ADAPTATION FOR SU-MIMO SYSTEMS
    6.
    发明申请
    RECEIVER TERMINAL DRIVEN JOINT ENCODER AND DECODER MODE ADAPTATION FOR SU-MIMO SYSTEMS 有权
    SU-MIMO系统的接收机终端编码器和解码器模式适配

    公开(公告)号：US20110110449A1

    公开(公告)日：2011-05-12

    申请号：US12772717

    申请日：2010-05-03

    申请人： Sean A. Ramprashad ,  Haralabos C. Papadopoulos ,  Giuseppe Caire ,  Carl-Erik W. Sundberg

    发明人： Sean A. Ramprashad ,  Haralabos C. Papadopoulos ,  Giuseppe Caire ,  Carl-Erik W. Sundberg

    IPC分类号： H04W28/16 ,  H04W88/02

    CPC分类号： H04L1/0009 ,  H04L1/0003 ,  H04L1/0017 ,  H04L1/0025

    摘要： A system, a method and an apparatus are disclosed herein for receiver terminal driven joint encoder and decoder mode adaptation for SU-MIMO transmission. In one embodiment, the system comprises a transmitter that is able to be directed to transmit wireless signals over a multiple-input, multiple output (MIMO) system using any of a plurality of encoding modes; and a user terminal having a receiver comprising a decoding module which has a plurality of decoding modes, each of which can be used to decode communications from the transmitter received over a multiple-input, multiple output (MIMO) channel, wherein at least one encoding mode is operable with multiple of the decoding modes. The system also comprises a joint selection module that is operable to select for the MIMO transmission the decoding mode from the plurality of decoding modes and an encoding mode from the plurality of encoding modes to be used by the transmitter on the channel, the selection being based on receiver-dependent criteria corresponding to the decoding mode associated with the encoding mode and channel information, receiver hardware and state, and application-specific constraints. The joint selection module is operable to send information to identify the encoding mode to the transmitter using a feedback channel.

    摘要翻译： 本文公开了一种用于SU-MIMO传输的接收机终端驱动联合编码器和解码器模式适配的系统，方法和装置。 在一个实施例中，系统包括能够被引导以使用多输入多输出（MIMO）系统中的任何一种编码模式来发送无线信号的发射机; 以及具有接收机的用户终端，所述接收机包括具有多个解码模式的解码模块，每个解码模式可用于解码通过多输入多输出（MIMO）信道接收的发射机的通信，其中至少一个编码 模式可用多种解码模式操作。 所述系统还包括联合选择模块，其可操作以从所述多个解码模式中选择所述MIMO传输解码模式，以及从所述多个编码模式中选择所述发射机在所述信道上使用所述编码模式，所述选择基于 对应于与编码模式和信道信息，接收机硬件和状态以及应用特定约束相关联的解码模式的接收机相关标准。 联合选择模块可操作以使用反馈信道向发射机发送信息以识别编码模式。

    Receiver terminal driven joint encoder and decoder mode adaptation for SU-MIMO systems
    8.
    发明授权
    Receiver terminal driven joint encoder and decoder mode adaptation for SU-MIMO systems 有权
    用于SU-MIMO系统的接收机终端驱动联合编码器和解码器模式适配

    公开(公告)号：US09048977B2

    公开(公告)日：2015-06-02

    申请号：US12772717

    申请日：2010-05-03

    申请人： Sean A. Ramprashad ,  Haralabos C. Papadopoulos ,  Giuseppe Caire ,  Carl-Erik W. Sundberg

    发明人： Sean A. Ramprashad ,  Haralabos C. Papadopoulos ,  Giuseppe Caire ,  Carl-Erik W. Sundberg

    IPC分类号： H04W28/16 ,  H04L1/00

    CPC分类号： H04L1/0009 ,  H04L1/0003 ,  H04L1/0017 ,  H04L1/0025

    摘要： A system, a method and an apparatus are disclosed herein for receiver terminal driven joint encoder and decoder mode adaptation for SU-MIMO transmission. In one embodiment, the system comprises a transmitter that is able to be directed to transmit wireless signals over a multiple-input, multiple output (MIMO) system using any of a plurality of encoding modes; and a user terminal having a receiver comprising a decoding module which has a plurality of decoding modes, each of which can be used to decode communications from the transmitter received over a multiple-input, multiple output (MIMO) channel, wherein at least one encoding mode is operable with multiple of the decoding modes. The system also comprises a joint selection module that is operable to select for the MIMO transmission the decoding mode from the plurality of decoding modes and an encoding mode from the plurality of encoding modes to be used by the transmitter on the channel, the selection being based on receiver-dependent criteria corresponding to the decoding mode associated with the encoding mode and channel information, receiver hardware and state, and application-specific constraints. The joint selection module is operable to send information to identify the encoding mode to the transmitter using a feedback channel.

    摘要翻译： 本文公开了一种用于SU-MIMO传输的接收机终端驱动联合编码器和解码器模式适配的系统，方法和装置。 在一个实施例中，系统包括能够被引导以使用多输入多输出（MIMO）系统中的任何一种编码模式来发送无线信号的发射机; 以及具有接收机的用户终端，所述接收机包括具有多个解码模式的解码模块，每个解码模式可用于解码来自通过多输入多输出（MIMO）信道接收的发射机的通信，其中至少一个编码 模式可用多种解码模式操作。 所述系统还包括联合选择模块，其可操作以从所述多个解码模式中选择所述MIMO传输解码模式，以及从所述多个编码模式中选择所述发射机在所述信道上使用所述编码模式，所述选择基于 对应于与编码模式和信道信息，接收机硬件和状态以及应用特定约束相关联的解码模式的接收机相关标准。 联合选择模块可操作以使用反馈信道向发射机发送信息以识别编码模式。

    Soft output M-algorithm receiver structures with generalized survivor selection criteria for MIMO systems
    9.
    发明授权
    Soft output M-algorithm receiver structures with generalized survivor selection criteria for MIMO systems 有权
    用于MIMO系统的广义幸存选择标准的软输出M算法接收器结构

    公开(公告)号：US08565329B2

    公开(公告)日：2013-10-22

    申请号：US12476066

    申请日：2009-06-01

    申请人： Haralabos Papadopoulos ,  Carl-Erik W. Sundberg

    发明人： Haralabos Papadopoulos ,  Carl-Erik W. Sundberg

    IPC分类号： H04L1/06

    CPC分类号： H04L25/03216 ,  H04L1/0055 ,  H04L1/0618 ,  H04L25/0204 ,  H04L25/0246 ,  H04L25/03318 ,  H04L2025/03414 ,  H04L2025/0342

    摘要： A method and apparatus is disclosed herein for a modified soft output M-algorithm. In one embodiment, the soft output M-algorithm is employed by a receiver in a wireless communication system to receive information-bearing signals wirelessly transmitted from the transmitter wirelessly transmitted, the receiver comprising: an inner decoder structure having a multiple-in multiple-out (MIMO) joint demapper to perform joint inner demapping over each tone, the joint demapper being operable to apply a soft-output M-type algorithm to identify survivor candidates at each depth in a detection tree being searched for each tone, including surviving full-length candidates, based on at least one metric and at least one other criterion, where a number of best alternatives from every level of the tree are expanded along with one or more alternatives selected meeting the at least one other criterion and where soft-output related information is collected and stored for each bit, and an outer decoder operable with the inner decoder to perform iterative decoding.

    摘要翻译： 本文公开了一种用于修改的软输出M算法的方法和装置。 在一个实施例中，软输出M算法被无线通信系统中的接收机采用以接收从无线发送的发射机无线发射的信息承载信号，所述接收机包括：内部解码器结构，其具有多进多出 （MIMO）联合解映射器，以在每个音调上执行联合内部解映射，所述联合解映射器可操作以应用软输出M型算法来识别正在搜索每个音调的检测树中的每个深度处的幸存候选者， 基于至少一个度量和至少一个其他标准，其中来自所述树的每个级别的多个最佳替代物与满足所述至少一个其他标准的一种或多种选择一起扩展，并且其中软输出相关 针对每个位收集和存储信息，以及可以与内部解码器一起执行迭代解码的外部解码器。