公开(公告)号：EP2926460A4

公开(公告)日：2016-11-16

申请号：EP13860179

申请日：2013-12-03

申请人： DIGITAL POWERRADIO LLC

发明人： VOJCIC BRANIMIR R ,  PAPAHARALABOS STYLIANOS

IPC分类号： H03M13/11 ,  H03M13/09 ,  H03M13/15 ,  H03M13/25 ,  H03M13/29 ,  H03M13/35 ,  H03M13/37

CPC分类号： H03M13/1197 ,  H03M13/09 ,  H03M13/098 ,  H03M13/1111 ,  H03M13/152 ,  H03M13/255 ,  H03M13/2906 ,  H03M13/296 ,  H03M13/356 ,  H03M13/3746 ,  H03M13/3761 ,  H03M13/611 ,  H03M13/6362 ,  H04L1/0041

公开(公告)号：EP2926468A1

公开(公告)日：2015-10-07

申请号：EP13861233.8

申请日：2013-12-03

申请人： Digital Powerradio LLC

发明人： VOJCIC, Branimir, R. ,  DOGAN, Hakan

IPC分类号： H04B7/02

CPC分类号： H04L1/0045 ,  G06F11/1625 ,  H03M13/09 ,  H03M13/1108 ,  H03M13/1111 ,  H03M13/112 ,  H03M13/1131 ,  H03M13/1154 ,  H03M13/1191 ,  H03M13/1515 ,  H03M13/23 ,  H03M13/255 ,  H03M13/27 ,  H03M13/2792 ,  H03M13/2906 ,  H03M13/2933 ,  H03M13/2948 ,  H03M13/3707 ,  H03M13/373 ,  H03M13/3746 ,  H03M13/3784 ,  H03M13/3938 ,  H03M13/45 ,  H03M13/451 ,  H03M13/453 ,  H03M13/612 ,  H03M13/616 ,  H03M13/6325 ,  H03M13/6337 ,  H03M13/6362 ,  H03M13/6541 ,  H03M13/6552 ,  H03M13/658 ,  H04B17/309 ,  H04L1/004 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0071 ,  H04L25/022 ,  H04L25/0222 ,  H04L25/0224 ,  H04L25/0236 ,  H04L27/261 ,  H04L27/2649

摘要： Systems and methods for decoding block and concatenated codes are provided. These include advanced iterative decoding techniques based on belief propagation algorithms, with particular advantages when applied to codes having higher density parity check matrices. Improvements are also provided for performing channel state information estimation including the use of optimum filter lengths based on channel selectivity and adaptive decision-directed channel estimation. These improvements enhance the performance of various communication systems and consumer electronics. Particular improvements are also provided for decoding HD Radio signals, including enhanced decoding of reference subcarriers based on soft-diversity combining, joint enhanced channel state information estimation, as well as iterative soft-input soft-output and list decoding of convolutional codes and Reed-Solomon codes. These and other improvements enhance the decoding of different logical channels in HD Radio systems.

摘要翻译： 提供了用于解码块和级联码的系统和方法。 基于这些包括先进的迭代解码技术达传播算法，具有特别的优点。当应用于具有较高密度奇偶校验矩阵码。 这样提供了用于执行信道状态信息估计包括使用基于信道选择性和自适应判决引导的信道估计最优滤波器长度的改进。 这些改进增强了各种通信系统和消费电子产品的性能。 因此，提供用于解码的HD Radio信号特定的改进，包括基于软分集组合，联合增强的信道状态信息估计，以及卷积码和里德迭代软输入软输出和列表解码基准子载波增强解码 Solomon码。 这些和其他的改进提高HD无线电系统中的不同逻辑信道的解码。

公开(公告)号：EP2926462A1

公开(公告)日：2015-10-07

申请号：EP13861260.1

申请日：2013-12-03

申请人： Digital Powerradio LLC

发明人： VOJCIC, Branimir, R. ,  SHAYEGH, Farnaz

IPC分类号： H03M13/00

CPC分类号： H04L1/0045 ,  G06F11/1625 ,  H03M13/09 ,  H03M13/1108 ,  H03M13/1111 ,  H03M13/112 ,  H03M13/1131 ,  H03M13/1154 ,  H03M13/1191 ,  H03M13/1515 ,  H03M13/23 ,  H03M13/255 ,  H03M13/27 ,  H03M13/2792 ,  H03M13/2906 ,  H03M13/2933 ,  H03M13/2948 ,  H03M13/3707 ,  H03M13/373 ,  H03M13/3746 ,  H03M13/3784 ,  H03M13/3938 ,  H03M13/45 ,  H03M13/451 ,  H03M13/453 ,  H03M13/612 ,  H03M13/616 ,  H03M13/6325 ,  H03M13/6337 ,  H03M13/6362 ,  H03M13/6541 ,  H03M13/6552 ,  H03M13/658 ,  H04B17/309 ,  H04L1/004 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0071 ,  H04L25/022 ,  H04L25/0222 ,  H04L25/0224 ,  H04L25/0236 ,  H04L27/261 ,  H04L27/2649

摘要： Systems and methods for decoding block and concatenated codes are provided. These include advanced iterative decoding techniques based on belief propagation algorithms, with particular advantages when applied to codes having higher density parity check matrices. Improvements are also provided for performing channel state information estimation including the use of optimum filter lengths based on channel selectivity and adaptive decision-directed channel estimation. These improvements enhance the performance of various communication systems and consumer electronics. Particular improvements are also provided for decoding HD Radio signals, including enhanced decoding of reference subcarriers based on soft-diversity combining, joint enhanced channel state information estimation, as well as iterative soft-input soft-output and list decoding of convolutional codes and Reed-Solomon codes. These and other improvements enhance the decoding of different logical channels in HD Radio systems.

摘要翻译： 提供了用于解码块和级联码的系统和方法。 这些包括基于置信传播算法的高级迭代解码技术，当应用于具有较高密度奇偶校验矩阵的码时具有特别的优点。 在置信传播的迭代期间，可以计算可变检查消息。 根据一些实施例，缩放因子可以基于一组可变检查消息中的最小绝对值来计算，并且可以用于缩放在置信传播期间传递的消息。 根据其它实施例，变量与检查消息的正或负号可以被比较并用于生成修改的变量与检查消息。 根据其他实施例，可以生成稀疏奇偶校验矩阵并将其用于通过软输入软输出消息传递产生更新的对数似然比。 这些和其他改进增强了H / M / LDPC码的解码，包括可用于HD无线电系统的Reed-Solomon码。

公开(公告)号：EP2926461A4

公开(公告)日：2016-12-28

申请号：EP13860186

申请日：2013-12-03

申请人： DIGITAL POWERRADIO LLC

发明人： VOJCIC BRANIMIR R ,  BAJIC IVAN V ,  HAGHIGHAT JAVAD

IPC分类号： H03M13/00 ,  H04N19/65 ,  H04N21/2383 ,  H04N21/438 ,  H04N21/63

CPC分类号： H04N19/00854 ,  H04N19/65 ,  H04N21/2383 ,  H04N21/4382 ,  H04N21/631

公开(公告)号：EP2926461A2

公开(公告)日：2015-10-07

申请号：EP13860186.9

申请日：2013-12-03

申请人： Digital Powerradio, LLC

发明人： VOJCIC, Branimir R. ,  BAJIC, Ivan V. ,  HAGHIGHAT, Javad

IPC分类号： H03M13/00

CPC分类号： H04N19/00854 ,  H04N19/65 ,  H04N21/2383 ,  H04N21/4382 ,  H04N21/631

摘要： Methods and systems for augmenting a source message by suitably-chosen bits and/or sequences of bits for the purpose of enhancing decoding or synchronization performance. Properties of the source message can be used to select and optimize synchronization sequences, including their length and placement within the source message. Various message attributes, such as message or segment weight, symbol counts, and others, including their combinations, may be encoded into the synchronization sequence to further improve decoding performance in the presence of errors. These methods and systems can be employed for standalone source decoding of noisy bit streams, as well as iterative joint source-channel decoding. They may further be combined with other methods whether or not known in the art, such as CRC and forward error correction, to achieve the desired performance complexity trade-off.

公开(公告)号：EP2926468A4

公开(公告)日：2017-01-11

申请号：EP13861233

申请日：2013-12-03

申请人： DIGITAL POWERRADIO LLC

发明人： VOJCIC BRANIMIR R ,  DOGAN HAKAN

IPC分类号： H03M13/11 ,  G06F11/16 ,  H03M13/00 ,  H03M13/09 ,  H03M13/15 ,  H03M13/23 ,  H03M13/25 ,  H03M13/27 ,  H03M13/29 ,  H03M13/37 ,  H03M13/39 ,  H03M13/45 ,  H04B17/309 ,  H04L1/00 ,  H04L25/02 ,  H04L27/26

CPC分类号： H04L1/0045 ,  G06F11/1625 ,  H03M13/09 ,  H03M13/1108 ,  H03M13/1111 ,  H03M13/112 ,  H03M13/1131 ,  H03M13/1154 ,  H03M13/1191 ,  H03M13/1515 ,  H03M13/23 ,  H03M13/255 ,  H03M13/27 ,  H03M13/2792 ,  H03M13/2906 ,  H03M13/2933 ,  H03M13/2948 ,  H03M13/3707 ,  H03M13/373 ,  H03M13/3746 ,  H03M13/3784 ,  H03M13/3938 ,  H03M13/45 ,  H03M13/451 ,  H03M13/453 ,  H03M13/612 ,  H03M13/616 ,  H03M13/6325 ,  H03M13/6337 ,  H03M13/6362 ,  H03M13/6541 ,  H03M13/6552 ,  H03M13/658 ,  H04B17/309 ,  H04L1/004 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0071 ,  H04L25/022 ,  H04L25/0222 ,  H04L25/0224 ,  H04L25/0236 ,  H04L27/261 ,  H04L27/2649

摘要： Systems and methods for decoding block and concatenated codes are provided. These include advanced iterative decoding techniques based on belief propagation algorithms, with particular advantages when applied to codes having higher density parity check matrices. Improvements are also provided for performing channel state information estimation including the use of optimum filter lengths based on channel selectivity and adaptive decision-directed channel estimation. These improvements enhance the performance of various communication systems and consumer electronics. Particular improvements are also provided for decoding HD Radio signals, including enhanced decoding of reference subcarriers based on soft-diversity combining, joint enhanced channel state information estimation, as well as iterative soft-input soft-output and list decoding of convolutional codes and Reed-Solomon codes. These and other improvements enhance the decoding of different logical channels in HD Radio systems.

公开(公告)号：EP2926460A2

公开(公告)日：2015-10-07

申请号：EP13860179.4

申请日：2013-12-03

申请人： Digital Powerradio LLC

发明人： VOJCIC, Branimir, R. ,  PAPAHARALABOS, Stylianos

IPC分类号： H03M13/00

CPC分类号： H03M13/1197 ,  H03M13/09 ,  H03M13/098 ,  H03M13/1111 ,  H03M13/152 ,  H03M13/255 ,  H03M13/2906 ,  H03M13/296 ,  H03M13/356 ,  H03M13/3746 ,  H03M13/3761 ,  H03M13/611 ,  H03M13/6362 ,  H04L1/0041

摘要： Systems and methods for encoding and decoding check-irregular non-systematic IRA codes of messages in any communication or electronic system where capacity achieving coding is desired. According to these systems and methods, improved IRA coding strategies, including ones that employ capacity-approaching non-systematic IRA codes that are irregular and that exhibit a low error floor, are employed. These non-systematic IRA codes are particularly advantageous in scenarios in which up to half of coded bits could be lost due to channel impairments and/or where complementary coded bits are desired to transmit over two or more communications sub-channels. An encoder includes information bit repeaters and encoders, one or more interleavers, check node combiners, a check node by-pass and an accumulator. A decoder includes a demapper, one or more check node processors, an accumulator decoder, a bit decoder, and one or more interleavers/deinterleavers.