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21. 发明授权

US4922507A Multiple trellis coded modulation 失效
标题翻译：多重网格编码调制
公开(公告)号：US4922507A
公开(公告)日：1990-05-01
申请号：US127117
申请日：1987-12-01
申请人： Marvin K. Simon , Dariush Divsalar
发明人： Marvin K. Simon , Dariush Divsalar
IPC分类号： H04L27/18
CPC分类号： H04L27/186
摘要： A technique for designing trellis codes to minimize bit error performance for a fading channel. The invention provides a criteria which may be used in the design of such codes which is significantly different from that used for average white Gaussian noise channels. The method of multiple trellis coded modulation of the present invention comprises the steps of: (a) coding b bits of input data into s intermediate outputs; (b) grouping said s intermediate outputs into k groups of s.sub.i intermediate outputs each where the summation of all s.sub.i,s is equal to s and k is equal to at least 2; (c) mapping each of said k groups of intermediate outputs into one of a plurality of symbols in accordance with a plurality of modulation schemes, one for each group such that the first group is mapped in accordance with a first modulation scheme and the second group is mapped in accordance with a second modulation scheme; and (d) outputting each of said symbols to provide k output symbols for each b bits of input data.
摘要翻译：一种用于设计网格码以最小化衰落信道的误码性能的技术。本发明提供了可用于设计与用于平均白高斯噪声信道所使用的代码显着不同的这种代码的标准。本发明的多网格编码调制方法包括以下步骤：（a）将b比特的输入数据编码成s个中间输出; （b）将所述s个中间输出分组为k组si个中间输出，其中所有si，s的求和等于s且k等于至少2; （c）根据多个调制方案将所述k组中间输出中的每一个映射到多个符号中的一个，每个组一个，使得根据第一调制方案映射第一组，并且第二组根据第二调制方案映射; 和（d）输出每个所述符号以为输入数据的每个b位提供k个输出符号。

22. 发明授权

US08689083B2 Rate-compatible protograph LDPC codes 有权
标题翻译：速率兼容原型LDPC码
公开(公告)号：US08689083B2
公开(公告)日：2014-04-01
申请号：US13158263
申请日：2011-06-10
申请人： Thuy V. Nguyen , Aria Nosratinia , Dariush Divsalar
发明人： Thuy V. Nguyen , Aria Nosratinia , Dariush Divsalar
IPC分类号： H03M13/00
CPC分类号： H03M13/1197 , H03M13/036 , H03M13/116 , H03M13/6393 , H04L1/0057 , H04L1/1812
摘要： Digital communication coding methods resulting in rate-compatible low density parity-check (LDPC) codes built from protographs. Described digital coding methods start with a desired code rate and a selection of the numbers of variable nodes and check nodes to be used in the protograph. Constraints are set to satisfy a linear minimum distance growth property for the protograph. All possible edges in the graph are searched for the minimum iterative decoding threshold and the protograph with the lowest iterative decoding threshold is selected. Protographs designed in this manner are used in decode and forward relay channels.
摘要翻译：数字通信编码方法产生由原始图像构建的速率兼容低密度奇偶校验（LDPC）码。描述的数字编码方法以期望的码率开始，并且在原型图中选择要使用的可变节点和校验节点的数量。约束被设置为满足原始图的线性最小距离增长特性。搜索曲线图中的所有可能的边缘以获得最小迭代解码阈值，并选择具有最低迭代解码阈值的原始图。以这种方式设计的原型图用于解码和转发中继通道。

23. 发明申请

US20120275546A1 MULTIPLE SYMBOL NONCOHERENT SOFT OUTPUT DETECTOR 有权
标题翻译：多符号非易失性软输出检测器
公开(公告)号：US20120275546A1
公开(公告)日：2012-11-01
申请号：US13414616
申请日：2012-03-07
申请人： Dariush Divsalar
发明人： Dariush Divsalar
IPC分类号： H04L27/22
CPC分类号： H04L25/03171
摘要： Multiple symbol noncoherent soft output detectors in accordance with embodiments of the invention are disclosed. In a number of embodiments, the multiple symbol noncoherent soft output detector uses soft metrics based on the Log Likelihood Ratio (LLR) of each symbol to provide information concerning the reliability of each detected symbol. One embodiment of the invention includes a receiver configured to receive and sample a phase modulated input signal, and a multiple symbol noncoherent soft output detector configured to receive the sampled input signal and to generate a soft metric indicative of the reliability of a detected symbol based upon observations over multiple symbols.
摘要翻译：公开了根据本发明实施例的多符号非相干软输出检测器。在多个实施例中，多符号非相干软输出检测器使用基于每个符号的对数似然比（LLR）的软度量来提供关于每个检测符号的可靠性的信息。本发明的一个实施例包括被配置为接收和采样相位调制的输入信号的接收机，以及被配置为接收采样的输入信号并生成表示基于检测符号的可靠性的软度量的多符号非相干软输出检测器观察多个符号。

24. 发明授权

US08239746B2 Rate-compatible protograph LDPC code families with linear minimum distance 有权
标题翻译：具有线性最小距离的速率兼容原型LDPC码系列
公开(公告)号：US08239746B2
公开(公告)日：2012-08-07
申请号：US13341648
申请日：2011-12-30
申请人： Dariush Divsalar , Samuel J. Dolinar, Jr. , Christopher R. Jones
发明人： Dariush Divsalar , Samuel J. Dolinar, Jr. , Christopher R. Jones
IPC分类号： H03M13/13 , H03M13/00
CPC分类号： H04L1/0057 , H03M13/03 , H03M13/033 , H03M13/116 , H03M13/6362 , H03M13/6393
摘要： 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.
摘要翻译：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。

25. 发明授权

US08117523B2 Rate-compatible protograph LDPC code families with linear minimum distance 有权
标题翻译：具有线性最小距离的速率兼容原型LDPC码系列
公开(公告)号：US08117523B2
公开(公告)日：2012-02-14
申请号：US12125862
申请日：2008-05-22
申请人： Dariush Divsalar , Samuel J Dolinar, Jr. , Christopher R. Jones
发明人： Dariush Divsalar , Samuel J Dolinar, Jr. , Christopher R. Jones
IPC分类号： H03M13/13 , H03M13/00
CPC分类号： H04L1/0057 , H03M13/03 , H03M13/033 , H03M13/116 , H03M13/6362 , H03M13/6393
摘要： 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.
摘要翻译：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。

26. 发明申请

US20100299581A1 SERIAL TURBO TRELLIS CODED MODULATION USING A SERIALLY CONCATENATED CODER 有权
标题翻译：串行涡轮TRELLIS编码调制使用一个连续的编译器
公开(公告)号：US20100299581A1
公开(公告)日：2010-11-25
申请号：US12848889
申请日：2010-08-02
申请人： Dariush Divsalar , Sam Dolinar , Fabrizio Pollara
发明人： Dariush Divsalar , Sam Dolinar , Fabrizio Pollara
IPC分类号： H03M13/25 , G06F11/10
CPC分类号： H03M13/258 , H03M13/2972
摘要： 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.
摘要翻译：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。

27. 发明授权

US07693235B2 Reduced complexity coding system using iterative decoding 有权
标题翻译：降低了使用迭代解码的复杂度编码系统
公开(公告)号：US07693235B2
公开(公告)日：2010-04-06
申请号：US11514288
申请日：2006-08-31
申请人： Marvin K. Simon , Dariush Divsalar
发明人： Marvin K. Simon , Dariush Divsalar
IPC分类号： H04L27/20
CPC分类号： H04L1/006 , H04L1/005 , H04L1/0065 , H04L27/186
摘要： A concatenated coding scheme, using an outer coder, interleaver, and the inner coder inherent in an FQPSK signal to form a coded FQPSK signal. The inner coder is modified to enable interative decoding of the outer code.
摘要翻译：使用FQPSK信号固有的外部编码器，交织器和内部编码器的级联编码方案来形成编码的FQPSK信号。内部编码器被修改以允许外部码的交互解码。

28. 发明申请

US20070130494A1 Serial turbo trellis coded modulation using a serially concatenated coder 有权
标题翻译：使用串行级联编码器进行串行turbo网格编码调制
公开(公告)号：US20070130494A1
公开(公告)日：2007-06-07
申请号：US11514295
申请日：2006-08-31
申请人： Dariush Divsalar , Sam Dolinar , Fabrizio Pollara
发明人： Dariush Divsalar , Sam Dolinar , Fabrizio Pollara
IPC分类号： H03M13/00
CPC分类号： H03M13/258 , H03M13/2972
摘要： 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.
摘要翻译：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。

29. 发明申请

US20060294445A1 ARA type protograph codes 有权
标题翻译： ARA型原型码
公开(公告)号：US20060294445A1
公开(公告)日：2006-12-28
申请号：US11166040
申请日：2005-06-24
申请人： Dariush Divsalar , Aliazam Abbasfar , Christopher Jones , Samuel Dolinar , Jeremy Thorpe , Kenneth Andrews , Kung Yao
发明人： Dariush Divsalar , Aliazam Abbasfar , Christopher Jones , Samuel Dolinar , Jeremy Thorpe , Kenneth Andrews , Kung Yao
IPC分类号： H03M13/05
CPC分类号： H03M13/1197 , H03M13/1194
摘要： An apparatus and method for encoding low-density parity check codes. Together with a repeater, an interleaver and an accumulator, the apparatus comprises a precoder, thus forming accumulate-repeat-accumulate (ARA codes). Protographs representing various types of ARA codes, including AR3A, AR4A and ARJA codes, are described. High performance is obtained when compared to the performance of current repeat-accumulate (RA) or irregular-repeat-accumulate (IRA) codes.
摘要翻译：一种用于编码低密度奇偶校验码的装置和方法。与中继器，交织器和累加器一起，该装置包括预编码器，从而形成累加重复累加（ARA码）。描述代表各种类型的ARA代码的原型，包括AR3A，AR4A和ARJA代码。与当前重复累积（RA）或不规则重复累积（IRA）码的性能相比，获得了高性能。

30. 发明申请

US20060218460A1 Interleaved serial concatenation forming turbo-like codes 有权
公开(公告)号：US20060218460A1
公开(公告)日：2006-09-28
申请号：US11429083
申请日：2006-05-05
申请人： Dariush Divsalar , Robert McEliece , Hui Jin , Fabrizio Pollara
发明人： Dariush Divsalar , Robert McEliece , Hui Jin , Fabrizio Pollara
IPC分类号： H03M13/00
CPC分类号： H03M13/296 , H03M13/1111 , H03M13/2972
摘要： A turbo-like code is formed by repeating the signal, coding it, and interleaving it. A serial concatenated coder is formed of an inner coder and an outer coder separated by an interleaver. The outer coder is a coder which has rate greater than one e.g. a repetition coder. The interleaver rearranges the bits. An outer coder is a rate one coder.

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