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    • 5. 发明授权
    • Rate-compatible protograph LDPC code families with linear minimum distance
    • 具有线性最小距离的速率兼容原型LDPC码系列
    • US08239746B2
    • 2012-08-07
    • US13341648
    • 2011-12-30
    • Dariush DivsalarSamuel J. Dolinar, Jr.Christopher R. Jones
    • Dariush DivsalarSamuel J. Dolinar, Jr.Christopher R. Jones
    • H03M13/13H03M13/00
    • H04L1/0057H03M13/03H03M13/033H03M13/116H03M13/6362H03M13/6393
    • Digital communication coding methods are shown, which generate certain types of low-density parity-check (LDPC) codes built from protographs. A first method creates protographs having the linear minimum distance property and comprising at least one variable node with degree less than 3. A second method creates families of protographs of different rates, all structurally identical for all rates except for a rate-dependent designation of certain variable nodes as transmitted or non-transmitted. A third method creates families of protographs of different rates, all structurally identical for all rates except for a rate-dependent designation of the status of certain variable nodes as non-transmitted or set to zero. LDPC codes built from the protographs created by these methods can simultaneously have low error floors and low iterative decoding thresholds.
    • 示出了数字通信编码方法,其生成由原始图形构建的某些类型的低密度奇偶校验(LDPC)码。 第一种方法创建具有线性最小距离属性并具有至少一个度数小于3的至少一个可变节点的原始图。第二种方法创建不同速率的原型系列,在所有速率的结构上都是相同的,除了特定的速率依赖指定 可变节点作为发送或未发送。 第三种方法创建不同速率的原型系列,所有速率的结构相同,除了某些变量节点的状态的速率依赖性指定为未发送或设置为零。 由这些方法创建的原型图构建的LDPC码可以同时具有低错误层和低迭代解码阈值。
    • 6. 发明授权
    • Rate-compatible protograph LDPC code families with linear minimum distance
    • 具有线性最小距离的速率兼容原型LDPC码系列
    • US08117523B2
    • 2012-02-14
    • US12125862
    • 2008-05-22
    • Dariush DivsalarSamuel J Dolinar, Jr.Christopher R. Jones
    • Dariush DivsalarSamuel J Dolinar, Jr.Christopher R. Jones
    • H03M13/13H03M13/00
    • H04L1/0057H03M13/03H03M13/033H03M13/116H03M13/6362H03M13/6393
    • Digital communication coding methods are shown, which generate certain types of low-density parity-check (LDPC) codes built from protographs. A first method creates protographs having the linear minimum distance property and comprising at least one variable node with degree less than 3. A second method creates families of protographs of different rates, all having the linear minimum distance property, and structurally identical for all rates except for a rate-dependent designation of certain variable nodes as transmitted or non-transmitted. A third method creates families of protographs of different rates, all having the linear minimum distance property, and structurally identical for all rates except for a rate-dependent designation of the status of certain variable nodes as non-transmitted or set to zero. LDPC codes built from the protographs created by these methods can simultaneously have low error floors and low iterative decoding thresholds, and families of such codes of different rates can be decoded efficiently using a common decoding architecture.
    • 示出了数字通信编码方法,其生成由原始图形构建的某些类型的低密度奇偶校验(LDPC)码。 第一种方法创建具有线性最小距离属性的原始图,并且包含至少一个度数小于3的可变节点。第二种方法创建不同速率的原型系列,全部具有线性最小距离属性,并且对于所有速率在结构上相同, 用于某些可变节点的速率依赖性指定,如发送或未发送。 第三种方法创建不同速率的原型系列,所有族都具有线性最小距离属性,并且对于所有速率的结构相同,除了某些可变节点的状态的速率依赖性指定为未发送或设置为零。 由这些方法创建的原型图构建的LDPC码可以同时具有低误差底层和低迭代解码阈值,并且可以使用公共解码架构有效地解码不同速率的这种码的族。
    • 7. 发明授权
    • Serial turbo trellis coded modulation using a serially concatenated coder
    • 使用串行级联编码器进行串行turbo网格编码调制
    • US07770093B2
    • 2010-08-03
    • US11514295
    • 2006-08-31
    • Dariush DivsalarSamuel J. DolinarFabrizio Pollara
    • Dariush DivsalarSamuel J. DolinarFabrizio Pollara
    • H03M13/03
    • H03M13/258H03M13/2972
    • Serial concatenated trellis coded modulation (SCTCM) includes an outer coder, an interleaver, a recursive inner coder and a mapping element. The outer coder receives data to be coded and produces outer coded data. The interleaver permutes the outer coded data to produce interleaved data. The recursive inner coder codes the interleaved data to produce inner coded data. The mapping element maps the inner coded data to a symbol. The recursive inner coder has a structure which facilitates iterative decoding of the symbols at a decoder system. The recursive inner coder and the mapping element are selected to maximize the effective free Euclidean distance of a trellis coded modulator formed from the recursive inner coder and the mapping element. The decoder system includes a demodulation unit, an inner SISO (soft-input soft-output) decoder, a deinterleaver, an outer SISO decoder, and an interleaver.
    • 串行级联网格编码调制(SCTCM)包括外部编码器,交织器,递归内部编码器和映射元件。 外部编码器接收要编码的数据,并产生外部编码数据。 交织器将外部编码数据置换以产生交错数据。 递归内部编码器对交织数据进行编码以产生内部编码数据。 映射元素将内部编码数据映射到符号。 递归内部编码器具有便于在解码器系统处对符号进行迭代解码的结构。 选择递归内部编码器和映射元件以最大化由递归内部编码器和映射元件形成的网格编码调制器的有效自由欧几里得距离。 解码器系统包括解调单元,内部SISO(软输入软输出)解码器,解交织器,外部SISO解码器和交织器。
    • 8. 发明授权
    • Serial turbo trellis coded modulation using a serially concatenated coder
    • 使用串行级联编码器进行串行turbo网格编码调制
    • US08086943B2
    • 2011-12-27
    • US12848889
    • 2010-08-02
    • Dariush DivsalarSamuel J. DolinarFabrizio Pollara
    • Dariush DivsalarSamuel J. DolinarFabrizio Pollara
    • H03M13/03
    • H03M13/258H03M13/2972
    • Serial concatenated trellis coded modulation (SCTCM) includes an outer coder, an interleaver, a recursive inner coder and a mapping element. The outer coder receives data to be coded and produces outer coded data. The interleaver permutes the outer coded data to produce interleaved data. The recursive inner coder codes the interleaved data to produce inner coded data. The mapping element maps the inner coded data to a symbol. The recursive inner coder has a structure which facilitates iterative decoding of the symbols at a decoder system. The recursive inner coder and the mapping element are selected to maximize the effective free Euclidean distance of a trellis coded modulator formed from the recursive inner coder and the mapping element. The decoder system includes a demodulation unit, an inner SISO (soft-input soft-output) decoder, a deinterleaver, an outer SISO decoder, and an interleaver.
    • 串行级联网格编码调制(SCTCM)包括外部编码器,交织器,递归内部编码器和映射元件。 外部编码器接收要编码的数据,并产生外部编码数据。 交织器将外部编码数据置换以产生交错数据。 递归内部编码器对交错数据进行编码以产生内部编码数据。 映射元素将内部编码数据映射到符号。 递归内部编码器具有便于在解码器系统处对符号进行迭代解码的结构。 选择递归内部编码器和映射元件以最大化由递归内部编码器和映射元件形成的网格编码调制器的有效自由欧几里得距离。 解码器系统包括解调单元,内部SISO(软输入软输出)解码器,解交织器,外部SISO解码器和交织器。