Data encoding and decoding using Slepian-Wolf coded nested quantization to achieve Wyner-Ziv coding
    11.
    发明授权
    Data encoding and decoding using Slepian-Wolf coded nested quantization to achieve Wyner-Ziv coding 有权
    数据编码和解码使用Slepian-Wolf编码嵌套量化来实现Wyner-Ziv编码

    公开(公告)号:US07295137B2

    公开(公告)日:2007-11-13

    申请号:US11086778

    申请日:2005-03-22

    IPC分类号: H03M7/34

    CPC分类号: H03M7/30

    摘要: A system and method for realizing a Wyner-Ziv encoder may involve the following steps: (a) apply nested quantization to input data from an information source in order to generate intermediate data; and (b) encode the intermediate data using an asymmetric Slepian-Wolf encoder in order to generate compressed output data representing the input data. Similarly, a Wyner-Ziv decoder may be realized by: (1) applying an asymmetric Slepian-Wolf decoder to compressed input data using side information to generate intermediate values, and (b) jointly decoding the intermediate values using the side information to generate decompressed output data.

    摘要翻译: 用于实现Wyner-Ziv编码器的系统和方法可以包括以下步骤:(a)将嵌套量化应用于从信息源输入数据以产生中间数据; 和(b)使用非对称Slepian-Wolf编码器对中间数据进行编码,以产生表示输入数据的压缩输出数据。 类似地,可以通过以下方式来实现Wyner-Ziv解码器:(1)使用侧信息对压缩输入数据应用非对称Slepian-Wolf解码器以产生中间值,以及(b)使用辅助信息共同解码中间值以产生解压缩 输出数据。

    Data encoding and decoding using Slepian-Wolf coded nested quantization to achieve Wyner-Ziv coding
    12.
    发明授权
    Data encoding and decoding using Slepian-Wolf coded nested quantization to achieve Wyner-Ziv coding 有权
    数据编码和解码使用Slepian-Wolf编码嵌套量化来实现Wyner-Ziv编码

    公开(公告)号:US07649479B2

    公开(公告)日:2010-01-19

    申请号:US11868889

    申请日:2007-10-08

    IPC分类号: H03M7/34

    CPC分类号: H03M7/30

    摘要: A system and method for realizing a Wyner-Ziv encoder may involve the following steps: (a) apply nested quantization to input data from an information source in order to generate intermediate data; and (b) encode the intermediate data using an asymmetric Slepian-Wolf encoder in order to generate compressed output data representing the input data. Similarly, a Wyner-Ziv decoder may be realized by: (1) applying an asymmetric Slepian-Wolf decoder to compressed input data using side information to generate intermediate values, and (b) jointly decoding the intermediate values using the side information to generate decompressed output data.

    摘要翻译: 用于实现Wyner-Ziv编码器的系统和方法可以包括以下步骤:(a)将嵌套量化应用于从信息源输入数据以产生中间数据; 和(b)使用非对称Slepian-Wolf编码器对中间数据进行编码,以产生表示输入数据的压缩输出数据。 类似地,可以通过以下方式来实现Wyner-Ziv解码器:(1)使用侧信息对压缩输入数据应用非对称Slepian-Wolf解码器以产生中间值,以及(b)使用辅助信息共同解码中间值以产生解压缩 输出数据。

    Data encoding and decoding using Slepian-Wolf coded nested quantization to achieve Wyner-Ziv coding
    13.
    发明授权
    Data encoding and decoding using Slepian-Wolf coded nested quantization to achieve Wyner-Ziv coding 有权
    数据编码和解码使用Slepian-Wolf编码嵌套量化来实现Wyner-Ziv编码

    公开(公告)号:US07256716B2

    公开(公告)日:2007-08-14

    申请号:US11068737

    申请日:2005-03-01

    IPC分类号: H03M7/34

    CPC分类号: H03M7/30

    摘要: A system and method for realizing a Wyner-Ziv encoder may involve the following steps: (a) applying nested quantization to input data from an information source in order to generate intermediate data; and (b) encoding the intermediate data using an asymmetric Slepian-Wolf encoder in order to generate compressed output data representing the input data. Similarly, a Wyner-Ziv decoder may be realized by applying an asymmetric Slepian-Wolf decoder to compressed input data (representing samples of a first source) to obtain intermediate values, and then, jointly decoding the intermediate values using side information (samples of a second source having known correlation with respect to the first source).

    摘要翻译: 用于实现Wyner-Ziv编码器的系统和方法可以包括以下步骤:(a)将嵌套量化应用于从信息源输入数据以产生中间数据; 和(b)使用非对称Slepian-Wolf编码器对中间数据进行编码,以产生表示输入数据的压缩输出数据。 类似地,Wyner-Ziv解码器可以通过将压缩输入数据(表示第一源的样本)应用于非对称Slepian-Wolf解码器来获得中间值,然后使用副信息(a 具有相对于第一源具有已知相关性的第二源)。

    Distributed joint source-channel coding of video using raptor codes
    14.
    发明申请
    Distributed joint source-channel coding of video using raptor codes 有权
    使用猛禽码分布式联合源视频编码

    公开(公告)号:US20080069242A1

    公开(公告)日:2008-03-20

    申请号:US11517942

    申请日:2006-09-08

    IPC分类号: H04N7/26

    摘要: A video encoder system includes a base layer and an enhancement layer for encoding video data. The base layer encodes a reduced quality version of the video data to obtain base layer data. The enhancement layer encodes the video data using energy-concentrating transform operations, nested scalar quantization, and Raptor encoders. The base layer data and enhancement layer data are transmitted through a channel to a video decoder system. The decoder system decodes the base layer data to recover an estimate of the reduced quality video and decodes the enhancement layer data (using the reduced quality video as side information) to obtain blocks of coset indices. The decoder system then operates on the blocks of coset indices to generate estimates of the original video data.

    摘要翻译: 视频编码器系统包括用于编码视频数据的基本层和增强层。 基层对视频数据的降低质量版本进行编码以获得基本层数据。 增强层使用能量集中变换操作,嵌套标量量化和猛禽编码器编码视频数据。 基层数据和增强层数据通过一个信道发送到视频解码器系统。 解码器系统对基本层数据进行解码以恢复降低质量视频的估计,并且将增强层数据(使用缩减质量视频作为辅助信息)解码以获得陪集索引块。 然后,解码器系统对陪集索引的块进行操作以产生原始视频数据的估计。

    Layered Wyner-Ziv video coding for transmission over unreliable channels
    15.
    发明授权
    Layered Wyner-Ziv video coding for transmission over unreliable channels 有权
    分层Wyner-Ziv视频编码,用于传输不可靠的频道

    公开(公告)号:US08073052B1

    公开(公告)日:2011-12-06

    申请号:US11494678

    申请日:2006-07-27

    IPC分类号: H04N7/12

    摘要: A system and method for video coding. Energy-concentrating transform operations are performed on video data to obtain transformed data. Nested scalar quantization is performed on the transformed data to generate blocks of coset indices. Bit planes of the blocks of coset indices are encoded using irregular repeat accumulate (IRA) encoders to generate corresponding bit streams. The bit streams are transmitted to a destination device over a channel. A decoder of the destination device receives input data, corresponding to transmitted bit streams, from the channel. The input data is decoded, using side information, to obtain estimates for the blocks of coset indices. Output video data (i.e., an estimate of the original video data) is generated using the estimated blocks of coset indices and the side information.

    摘要翻译: 一种用于视频编码的系统和方法。 对视频数据执行能量集中变换操作以获得变换数据。 对变换后的数据执行嵌套标量量化,生成集合索引块。 使用不规则重复累积(IRA)编码器对陪集索引块的位平面进行编码,以生成相应的比特流。 比特流通过信道被发送到目的地设备。 目的地设备的解码器从信道接收对应于发送的比特流的输入数据。 使用边信息对输入数据进行解码,以获得对陪集索引块的估计。 使用估计的陪集索引块和侧面信息来生成输出视频数据(即,原始视频数据的估计)。

    Compress-forward Coding with N-PSK Modulation for the Half-duplex Gaussian Relay Channel
    16.
    发明申请
    Compress-forward Coding with N-PSK Modulation for the Half-duplex Gaussian Relay Channel 失效
    用于半双工高斯中继信道的N-PSK调制的压缩转发编码

    公开(公告)号:US20070217541A1

    公开(公告)日:2007-09-20

    申请号:US11686019

    申请日:2007-03-14

    IPC分类号: H04L5/12

    摘要: Systems and methods that implement compress-forward (CF) coding with N-PSK modulation for the relay channel are disclosed, where N is greater than or equal to two. In the CF scheme, Wyner-Ziv coding is applied at the relay to exploit the joint statistics between signals at the relay and the destination. Quantizer design and selection of channel code parameters are discussed. Low-density parity check (LDPC) codes are used for error protection at the source, and nested scalar quantization (NSQ) and irregular repeat accumulate (IRA) codes for Wyner Ziv coding (or more precisely, distributed joint source-channel coding) at the relay. The destination system decodes original message information using (a) a first signal received from the source in a first interval and (b) a second signal that represents a mixture of transmissions from the source and relay in the second interval.

    摘要翻译: 公开了通过用于中继信道的N-PSK调制实现压缩前向(CF)编码的系统和方法,其中N大于或等于2。 在CF方案中,Wyner-Ziv编码适用于继电器,以利用继电器和目的地之间的信号之间的联合统计。 讨论量化器设计和选择通道代码参数。 低密度奇偶校验(LDPC)码用于源处的错误保护,嵌套标量量化(NSQ)和不规则重复累加(IRA)码用于Wyner-Ziv编码(或更准确地说,分布式联合源信道编码) 在继电器。 目的地系统使用(a)在第一间隔中从源接收的第一信号和(b)表示在第二间隔中来自源和继电器的传输的混合的第二信号来解码原始消息信息。

    Compress-forward coding with N-PSK modulation for the half-duplex gaussian relay channel
    17.
    发明授权
    Compress-forward coding with N-PSK modulation for the half-duplex gaussian relay channel 有权
    用于半双工高斯中继通道的N-PSK调制的压缩转发编码

    公开(公告)号:US08363747B2

    公开(公告)日:2013-01-29

    申请号:US13043232

    申请日:2011-03-08

    IPC分类号: H04L27/18

    摘要: Systems and methods that implement compress-forward (CF) coding with N-PSK modulation for the relay channel are disclosed, where N is greater than or equal to two. In the CF scheme, Wyner-Ziv coding is applied at the relay to exploit the joint statistics between signals at the relay and the destination. Quantizer design and selection of channel code parameters are discussed. Low-density parity check (LDPC) codes are used for error protection at the source, and nested scalar quantization (NSQ) and irregular repeat accumulate (IRA) codes for Wyner Ziv coding (or more precisely, distributed joint source-channel coding) at the relay. The destination system decodes original message information using (a) a first signal received from the source in a first interval and (b) a second signal that represents a mixture of transmissions from the source and relay in the second interval.

    摘要翻译: 公开了通过用于中继信道的N-PSK调制实现压缩前向(CF)编码的系统和方法,其中N大于或等于2。 在CF方案中,Wyner-Ziv编码适用于继电器,以利用继电器和目的地之间的信号之间的联合统计。 讨论量化器设计和选择通道代码参数。 低密度奇偶校验(LDPC)码用于源处的错误保护,嵌套标量量化(NSQ)和不规则重复累加(IRA)码用于Wyner-Ziv编码(或更准确地说,分布式联合源信道编码) 在继电器。 目的地系统使用(a)在第一间隔中从源接收的第一信号和(b)表示在第二间隔中来自源和继电器的传输的混合的第二信号来解码原始消息信息。

    COMPRESS-FORWARD CODING WITH N-PSK MODULATION FOR THE HALF-DUPLEX GAUSSIAN RELAY CHANNEL
    18.
    发明申请
    COMPRESS-FORWARD CODING WITH N-PSK MODULATION FOR THE HALF-DUPLEX GAUSSIAN RELAY CHANNEL 有权
    用于半双工高斯继电器通道的N-PSK调制的压缩前向编码

    公开(公告)号:US20110161776A1

    公开(公告)日:2011-06-30

    申请号:US13043232

    申请日:2011-03-08

    IPC分类号: H03M13/29 G06F11/10

    摘要: Systems and methods that implement compress-forward (CF) coding with N-PSK modulation for the relay channel are disclosed, where N is greater than or equal to two. In the CF scheme, Wyner-Ziv coding is applied at the relay to exploit the joint statistics between signals at the relay and the destination. Quantizer design and selection of channel code parameters are discussed. Low-density parity check (LDPC) codes are used for error protection at the source, and nested scalar quantization (NSQ) and irregular repeat accumulate (IRA) codes for Wyner Ziv coding (or more precisely, distributed joint source-channel coding) at the relay. The destination system decodes original message information using (a) a first signal received from the source in a first interval and (b) a second signal that represents a mixture of transmissions from the source and relay in the second interval.

    摘要翻译: 公开了通过用于中继信道的N-PSK调制实现压缩前向(CF)编码的系统和方法,其中N大于或等于2。 在CF方案中,Wyner-Ziv编码适用于继电器,以利用继电器和目的地之间的信号之间的联合统计。 讨论量化器设计和选择通道代码参数。 低密度奇偶校验(LDPC)码用于源处的错误保护,嵌套标量量化(NSQ)和不规则重复累加(IRA)码用于Wyner-Ziv编码(或更准确地说,分布式联合源信道编码) 在继电器。 目的地系统使用(a)在第一间隔中从源接收的第一信号和(b)表示在第二间隔中来自源和继电器的传输的混合的第二信号来解码原始消息信息。

    Wyner-Ziv coding based on TCQ and LDPC codes
    20.
    发明授权
    Wyner-Ziv coding based on TCQ and LDPC codes 有权
    基于TCQ和LDPC码的Wyner-Ziv编码

    公开(公告)号:US08207874B2

    公开(公告)日:2012-06-26

    申请号:US12185545

    申请日:2008-08-04

    IPC分类号: H03M7/00

    摘要: An encoder employs a trellis coded quantization (TCQ) unit and a compression unit. The TCQ uses a set of polynomials that have been selected to maximize granular gain. The TCQ unit operates on a block of samples from a source. The compression unit compresses bit planes of the TCQ output, using parity check matrices of corresponding LDPC codes, to obtain corresponding syndromes. The parity check matrices are selected so their compression performance approaches close to the limit for Slepian-Wolf coding. A decoder employs a decoding unit and an estimation unit. The decoding unit decodes the syndromes using side information to produce an estimate for the TCQ output. The side information is correlated with the source. The estimation unit estimates the block of source samples using the estimated TCQ output and the side information. Trellis coded vector quantization may be used as an alternative to TCQ.

    摘要翻译: 编码器采用网格编码量化(TCQ)单元和压缩单元。 TCQ使用一组已经选择的多项式来最大化粒度增益。 TCQ单元对来自源的样本块进行操作。 压缩单元使用相应LDPC码的奇偶校验矩阵来压缩TCQ输出的比特平面,以获得相应的校验子。 选择奇偶校验矩阵,使其压缩性能接近Slepian-Wolf编码的极限。 解码器采用解码单元和估计单元。 解码单元使用边信息解码校正子,以产生TCQ输出的估计。 侧面信息与源相关。 估计单元使用估计的TCQ输出和侧面信息来估计源样本块。 网格编码矢量量化可以用作TCQ的替代。