专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明申请

US20170279467A1 PERFORMANCE OPTIMIZATION IN SOFT DECODING OF ERROR CORRECTING CODES 审中-公开
公开(公告)号：US20170279467A1
公开(公告)日：2017-09-28
申请号：US15432255
申请日：2017-02-14
申请人： SK Hynix Inc.
发明人： Aman Bhatia , Naveen Kumar , Yi-Min Lin , Lingqi Zeng
IPC分类号： H03M13/45 , H03M13/11 , H03M13/29 , H03M13/15
CPC分类号： H03M13/2909 , H03M13/152 , H03M13/2918 , H03M13/2963 , H03M13/453
摘要： Techniques are described for decoding a codeword. In one example, the techniques include obtaining a first message comprising reliability information corresponding to each bit in the first codeword, determining a plurality of least reliable bits in the first codeword, and generating a plurality of flipped messages by flipping one or more of the plurality of least reliable bits in the first codeword. A number of the plurality of least reliable bits is equal to a first parameter and a number of flipped bits in each of the plurality of flipped messages is less than or equal to a second parameter. The method further includes decoding one or more of the plurality of flipped messages using a hard decoder to generate one or more candidate codewords.

42. 发明授权

US09698941B2 Systems and methods for advanced iterative decoding and channel estimation of concatenated coding systems 有权
公开(公告)号：US09698941B2
公开(公告)日：2017-07-04
申请号：US14942570
申请日：2015-11-16
申请人： LN2 DB, LLC
发明人： Branimir R Vojcic , Farnaz Shayegh , Hakan Dogan , Wookwon Lee
IPC分类号： H04L27/28 , H04L1/00 , G06F11/16 , H04L25/02 , H03M13/11 , H03M13/15 , H03M13/25 , H03M13/27 , H03M13/29 , H03M13/37 , H03M13/00 , H04L27/26 , H04B17/309 , H03M13/23 , H03M13/45 , H03M13/09 , H03M13/39
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 such as iterative soft-input soft-output and list decoding of convolutional codes, Reed-Solomon codes and BCH codes. 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, satellite radio signals, digital audio broadcasting (DAB) signals, digital audio broadcasting plus (DAB+) signals, digital video broadcasting-handheld (DVB-H) signals, digital video broadcasting-terrestrial (DVB-T) signals, world space system signals, terrestrial-digital multimedia broadcasting (T-DMB) signals, and China mobile multimedia broadcasting (CMMB) signals. These and other improvements enhance the decoding of different digital signals.

43. 发明申请

US20170104496A1 Iterative Decoding Scheme of Concatenated LDPC and BCH Codes for Optical Transport Network 有权
公开(公告)号：US20170104496A1
公开(公告)日：2017-04-13
申请号：US15287658
申请日：2016-10-06
申请人： NEC Laboratories America, Inc.
发明人： Shaoliang Zhang , Fatih Yaman , Wei Zhou
IPC分类号： H03M13/27 , H03M13/37 , H04L1/00 , H03M13/29 , H04B10/58 , H04B10/60
CPC分类号： H04L1/0064 , H03M13/1102 , H03M13/152 , H03M13/2906 , H03M13/2948 , H03M13/453 , H04B10/58 , H04B10/60 , H04L1/0041 , H04L1/0045 , H04L1/005 , H04L1/0058 , H04L1/0065
摘要： Systems and methods are disclosed for optically communicating data by, at a transmitter side, encoding a block of input bits by one or more outer encoders, and after interleaving the encoded bits, permuting the encoded bits according to a predetermined sequence or order, and further encoding the encoded bits by an inner encoder, and at a receiver side, decoding received bits with an inner decoder, and after the encoded bits are permuted, subsequently decoding by and outer decoder, and returning information bits at an outer decoder as an output. The soft-decision and hard-decision outputs from the outer BCH code help the inner LDPC decoder to have better estimation of the received bits and gain performance. The performance in higher-order modulation formats could be as large as 0.5 dB in one embodiment.

44. 发明申请

US20160329988A1 ERROR CORRECTION WITH TEST OF A PLURALITY OF LENGTHS FOR A DATA FRAME 审中-公开
标题翻译：对数据帧的长度测试的错误校正
公开(公告)号：US20160329988A1
公开(公告)日：2016-11-10
申请号：US15108219
申请日：2014-12-23
申请人： GrDF , SUEZ GROUPE
发明人： Jean Louis DORNSTETTER
IPC分类号： H04L1/00 , G06F11/10
CPC分类号： H04L1/0045 , G06F11/1004 , H03M13/09 , H03M13/333 , H03M13/453 , H04L1/0038 , H04L1/0041 , H04L1/0061 , H04W88/16
摘要： The invention relates to a method for receiving data frames which consists of determining a reference frame by firm decisions on the value of each bit received and then verifying the reference frame according to an integrity check code used for the transmission. The invention includes the following steps: calculating, for each bit of said reference frame, a plausibility value that represents the probability of a transmission error; and, in the event of incompatibility with said integrity check code, identifying in said reference frame a non-empty finite set of the most plausibly erroneous bits in accordance with said plausibility values; listing candidate frames each corresponding respectively to one of the possible combinations of numbers of reversals of the identified most plausibly erroneous bits; and verifying the compatibility of the listed candidate frames with said integrity check code.
摘要翻译：本发明涉及一种用于接收数据帧的方法，其包括通过对接收到的每个比特的值进行坚定的确定来确定参考帧，然后根据用于传输的完整性校验码验证参考帧。本发明包括以下步骤：针对所述参考帧的每个比特，计算表示传输误差概率的合理性值; 并且在与所述完整性校验码不兼容的情况下，根据所述似然值在所述参考帧中识别最可能错误位的非空有限集合; 列出候选帧，每个候选帧分别对应于所识别的最合理错误比特的反转数的可能组合之一; 以及验证列出的候选帧与所述完整性校验码的兼容性。

45. 发明授权

US09455861B2 Systems and methods for advanced iterative decoding and channel estimation of concatenated coding systems 有权
公开(公告)号：US09455861B2
公开(公告)日：2016-09-27
申请号：US14825504
申请日：2015-08-13
申请人： Digital PowerRadio, LLC
发明人： Branimir R Vojcic , Farnaz Shayegh
IPC分类号： H04L27/06 , H04L27/26 , G06F11/16 , H04L1/00 , H04L25/02 , H03M13/11 , H03M13/15 , H03M13/25 , H03M13/27 , H03M13/29 , H03M13/37 , H03M13/00 , H04B17/309 , H03M13/23 , H03M13/09
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.

46. 发明申请

US20160072657A1 SYSTEMS AND METHODS FOR ADVANCED ITERATIVE DECODING AND CHANNEL ESTIMATION OF CONCATENATED CODING SYSTEMS 审中-公开
标题翻译：用于高级迭代解码和信道编码系统的信道估计的系统和方法
公开(公告)号：US20160072657A1
公开(公告)日：2016-03-10
申请号：US14942570
申请日：2015-11-16
申请人： Digital PowerRadio, LLC
发明人： Branimir R. Vojcic , Farnaz Shayegh , Hakan Dogan , Wookwon Lee
IPC分类号： H04L27/26 , H03M13/00 , H03M13/23 , H04B17/309 , H04L1/00
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 such as iterative soft-input soft-output and list decoding of convolutional codes, Reed-Solomon codes and BCH codes. 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, satellite radio signals, digital audio broadcasting (DAB) signals, digital audio broadcasting plus (DAB+) signals, digital video broadcasting-handheld (DVB-H) signals, digital video broadcasting-terrestrial (DVB-T) signals, world space system signals, terrestrial-digital multimedia broadcasting (T-DMB) signals, and China mobile multimedia broadcasting (CMMB) signals. These and other improvements enhance the decoding of different digital signals.
摘要翻译：提供了用于解码块和级联代码的系统和方法。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代码时，具有特别的优点，例如迭代软输入软输出和卷积码列表解码，里德 - 所罗门码和BCH码。还提供了用于执行信道状态信息估计的改进，包括基于信道选择性和自适应决策信道估计的最佳滤波器长度的使用。这些改进提高了各种通信系统和消费电子产品的性能。还提供了特别的改进，用于解码高清无线电信号，卫星无线电信号，数字音频广播（DAB）信号，数字音频广播加（DAB +）信号，数字视频广播手持（DVB-H）信号，地面数字视频广播 DVB-T）信号，世界空间系统信号，地面数字多媒体广播（T-DMB）信号和中国移动多媒体广播（CMMB）信号。这些等改进增强了不同数字信号的解码。

47. 发明授权

US09231623B1 Chase decoding for turbo-product codes (TPC) using error intersections 有权
标题翻译：使用错误交叉点对涡轮产品代码（TPC）进行追踪解码
公开(公告)号：US09231623B1
公开(公告)日：2016-01-05
申请号：US14226369
申请日：2014-03-26
申请人： SK hynix memory solutions inc.
发明人： Naveen Kumar , Zheng Wu , Jason Bellorado
IPC分类号： H03M13/00 , H03M13/29 , H03M13/45
CPC分类号： H03M13/2963 , H03M13/453
摘要： A set of error intersections is determined using at least a first set of error-containing codewords and a second set of error-containing codewords. A first set of bit locations is selected from the set of error intersections using soft information associated with the first set of error-containing codewords. Chase decoding is performed on the first set of error-containing codewords. The set of error intersections is updated, based at least in part on the Chase decoding, to obtain an updated set of error intersections. From the updated set of error intersections, a second set of bit locations is selected using soft information associated with the second set of error-containing codewords. Chase decoding is performed on the second set of error-containing codewords.
摘要翻译：使用至少第一组含错误的码字和第二组含错误码字来确定一组错误交叉点。使用与第一组含错误码字相关联的软信息，从该组错误交集中选择第一组位位置。在第一组含错误码字上执行追踪解码。至少部分地基于追逐解码来更新错误交集的集合，以获得更新的错误交集集合。从更新的错误交集集合中，使用与第二组含错误码字相关联的软信息来选择第二组位位置。对第二组含错误码字执行追踪解码。

48. 发明申请

US20140153628A1 SYSTEMS AND METHODS FOR ADVANCED ITERATIVE DECODING AND CHANNEL ESTIMATION OF CONCATENATED CODING SYSTEMS 有权
公开(公告)号：US20140153628A1
公开(公告)日：2014-06-05
申请号：US14019289
申请日：2013-09-05
申请人： Digital PowerRadio, LLC
发明人： Branimir R. Vojcic , Hakan Dogan
IPC分类号： H04L1/00
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, including channel state information estimation such as by using 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, including HD Radio receivers and systems.

49. 发明授权

US08674860B2 Combined wu and chase decoding of cyclic codes 失效
标题翻译：循环码的组合和追逐解码
公开(公告)号：US08674860B2
公开(公告)日：2014-03-18
申请号：US13547463
申请日：2012-07-12
申请人： Yingquan Wu
发明人： Yingquan Wu
IPC分类号： H03M7/00
CPC分类号： H03M13/1545 , H03M13/1515 , H03M13/152 , H03M13/453 , H03M13/618
摘要： An apparatus having a first circuit and a second circuit is disclosed. The first circuit may be configured to generate (i) a plurality of symbols and (ii) a plurality of decision values both in response to detecting an encoded codeword. The second circuit may be configured to (i) generate a plurality of probabilities to flip one or more of the symbols based on the decision values, (ii) generate a modified probability by merging two or more of the probabilities of an unreliable position in the symbols and (iii) generate a decoded codeword by decoding the symbols using a list decode technique in response to the modified probability.
摘要翻译：公开了一种具有第一电路和第二电路的装置。第一电路可以被配置为响应于检测到编码的码字而产生（i）多个符号和（ii）多个判定值。第二电路可以被配置为（i）基于判定值产生多个概率来翻转符号中的一个或多个，（ii）通过将两个或更多个可靠位置的概率合并在符号，以及（iii）通过响应于修改的概率使用列表解码技术对符号进行解码来生成解码的码字。

50. 发明授权

US08473826B1 Hybrid soft decision hard decision reed solomon decoding 有权
标题翻译：混合软判决硬判决独奏解码
公开(公告)号：US08473826B1
公开(公告)日：2013-06-25
申请号：US12852136
申请日：2010-08-06
申请人： James Caldwell
发明人： James Caldwell
IPC分类号： H03M13/00
CPC分类号： H03M13/1515 , H03M13/453 , H03M13/458
摘要： Embodiments in accordance with the invention utilize Reed Solomon (RS) forward error correction (FEC) coding in conjunction with M-ary Bandwidth Efficient Modulation (BEM) schemes and soft decision decoding to improve the robustness of high spectral efficiency communications links. In one embodiment, information symbols in communication data blocks are encoded utilizing Reed Solomon (RS) forward error correction (FEC) coding and transmitted with either M-ary phase shift keying (MPSK) or M-ary quadrature amplitude modulation (MQAM). Using standard Reed Solomon (RS) hard decision decoding, a receiver either correctly decodes the received block or returns a decoding failure. In the event of a decoding failure, soft decision reliability information is used to identify received code symbols with a low probability of being correctly received and to generate new code symbol estimates that are used in the traditional Reed Solomon decoding algorithm.
摘要翻译：根据本发明的实施例利用Reed Solomon（RS）前向纠错（FEC）编码结合M元带宽有效调制（BEM）方案和软判决解码来提高高频谱效率通信链路的鲁棒性。在一个实施例中，利用Reed Solomon（RS）前向纠错（FEC）编码并用M相移相键控（MPSK）或M进制正交幅度调制（MQAM）进行发送来对通信数据块中的信息符号进行编码。使用标准Reed Solomon（RS）硬判决解码，接收器可以正确解码接收的块或返回解码失败。在解码失败的情况下，使用软判决可靠性信息来识别被正确接收的低概率的接收码元，并生成在传统的里德所罗门解码算法中使用的新的码符号估计。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式