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1. 发明申请

US20210119642A1 SUCCESSIVE CANCELLATION LIST-BASED DECODER AND DECODING METHOD THEREOF 有权
公开(公告)号：US20210119642A1
公开(公告)日：2021-04-22
申请号：US16823351
申请日：2020-03-19
申请人： National Tsing Hua University
发明人： Yu-Sheng Pao , Hsin-Yu Lee , Yeong-Luh Ueng , Chin-Liang Wang
IPC分类号： H03M13/11 , H03M13/03 , H03M13/09 , H03M13/13 , H03M13/29
摘要： A successive cancellation list-based decoder and a decoding method thereof are provided. In the method, an error check is performed on a set of data bits. A data unit includes the set of the data bits and at least one first check bit. Part of the set of data bits are considered as at least one second check bit. At each of the second check bits, its previous error-check result are verified, where the verified result is related to a comparison between each of the previous first check bits and a value obtained through a function calculation on corresponding data bits. The verified result at each of the second check bits determines whether to continue decoding of the set of data bits or to early terminate the decoding process. The method is able to increase the probability for early termination of the decoding process and to improve the decoding efficiency.

2. 发明授权

US09748968B1 Extreme index finder and finding method thereof 有权
公开(公告)号：US09748968B1
公开(公告)日：2017-08-29
申请号：US15415674
申请日：2017-01-25
申请人： National Tsing Hua University
发明人： Mao-Ruei Li , Chia-Hsiang Yang , Yeong-Luh Ueng
IPC分类号： H03M1/82
CPC分类号： H03M1/82 , H03M1/123
摘要： An extreme index finder and a digital value finding method are provided. The extreme index finder includes a plurality of digital-to-time converters (DTCs) and a first arbiter apparatus. The DTCs respectively receive a plurality of input signals and perform a digital-to-time converting operation on each of the input signals to respectively generate a plurality of time-domain signals. The first arbiter apparatus finds a position of a extreme value in the time-domain signals according to transition speeds of the time-domain signals and compares transition speed of the extreme value with each of the time-domain signals to find an extreme input signal corresponding to the extreme value in the input signals.

3. 发明申请

US20220224358A1 POLAR CODE DECODING APPARATUS AND OPERATION METHOD THEREOF 有权
公开(公告)号：US20220224358A1
公开(公告)日：2022-07-14
申请号：US17575598
申请日：2022-01-13
申请人： National Tsing Hua University
发明人： Hsin-Yu Lee , Yeong-Luh Ueng , Yi-Han Pan
IPC分类号： H03M13/13 , H03M13/45 , H03M13/00
摘要： A polar code decoding apparatus and an operation method thereof are provided. The polar code decoding apparatus includes a path expanding circuit and a node processing circuit. The path expanding circuit expands each of multiple previous paths corresponding to multiple previous decoding results into multiple candidate paths according to a current node. The path expanding circuit dynamically determines a path expanding number of the candidate paths of each of the previous paths according to an unreliable information bit number of the current node. The node processing circuit performs a path competition operation to select some paths from the candidate paths to serve as multiple current paths corresponding to multiple current decoding results.

4. 发明授权

US11063606B2 Successive cancellation list-based decoder and decoding method thereof 有权
公开(公告)号：US11063606B2
公开(公告)日：2021-07-13
申请号：US16823351
申请日：2020-03-19
申请人： National Tsing Hua University
发明人： Yu-Sheng Pao , Hsin-Yu Lee , Yeong-Luh Ueng , Chin-Liang Wang
IPC分类号： H03M13/11 , H03M13/03 , H03M13/09 , H03M13/13 , H03M13/29
摘要： A successive cancellation list-based decoder and a decoding method thereof are provided. In the method, an error check is performed on a set of data bits. A data unit includes the set of the data bits and at least one first check bit. Part of the set of data bits are considered as at least one second check bit. At each of the second check bits, its previous error-check result are verified, where the verified result is related to a comparison between each of the previous first check bits and a value obtained through a function calculation on corresponding data bits. The verified result at each of the second check bits determines whether to continue decoding of the set of data bits or to early terminate the decoding process. The method is able to increase the probability for early termination of the decoding process and to improve the decoding efficiency.

5. 发明申请

US20180309462A1 NON-ORTHOGONAL MULTIPLE ACCESS DATA TRANSMISSION METHOD AND TRANSMISSION DEVICE 审中-公开
公开(公告)号：US20180309462A1
公开(公告)日：2018-10-25
申请号：US15642346
申请日：2017-07-06
申请人： National Tsing Hua University
发明人： Yeong-Luh Ueng , Wei-Min Lai
IPC分类号： H03M13/29 , H04B1/40 , H03M13/15 , H04L1/00
CPC分类号： H03M13/293 , H03M13/1105 , H03M13/152 , H03M13/156 , H04B1/40 , H04L1/0042 , H04L1/0046 , H04L1/0057
摘要： The disclosure provides a non-orthogonal multiple access data transmission method and a transmission device using the same. The method includes: performing channel encoding for a plurality of data and a plurality of identifiers respectively corresponding to the plurality of data by using Raptor code so as to generate a Raptor codeword, wherein the plurality of identifiers respectively correspond to a plurality of receiving terminals; and modulating the Raptor codeword to generate a plurality of modulation symbols and broadcasting the plurality of modulation symbols.

6. 发明申请

US20170331496A1 DECODING METHOD AND DECODER FOR LOW DENSITY PARITY CHECK CODE 审中-公开
公开(公告)号：US20170331496A1
公开(公告)日：2017-11-16
申请号：US15203440
申请日：2016-07-06
申请人： National Tsing Hua University
发明人： Huang-Chang Lee , Yeong-Luh Ueng , Chin-Liang Wang
IPC分类号： H03M13/11 , H03M13/00
CPC分类号： H03M13/1111 , H03M13/1131 , H03M13/114 , H03M13/3707 , H03M13/3723
摘要： A decoding method for low density parity check (LDPC) code, used to decode an input signal into a correct codeword according to a predetermined LDPC matrix, is provided. The method includes performing a plurality of decoding attempts according to the LDPC matrix within a predetermined number of decoding attempts, the plurality of decoding attempts at least including a first decoding attempt with use of a first decoding schedule and a second decoding attempt with use of a second decoding schedule. The second decoding attempt is adjacently subsequent to the first decoding attempt. The first decoding schedule as a group is not included in the second decoding schedule.

7. 发明申请

US20220149868A1 METHOD AND POLAR CODE DECODER FOR DETERMINING TO-BE-FLIPPED BIT POSITION 有权
公开(公告)号：US20220149868A1
公开(公告)日：2022-05-12
申请号：US17156647
申请日：2021-01-25
申请人： National Tsing Hua University
发明人： Chung-Hsuan Wang , Yi-Han Pan , Yu-Heng Lin , Yeong-Luh Ueng , Chin-Liang Wang
IPC分类号： H03M13/15 , H03M13/39 , H03M13/45 , H03M13/00
摘要： The disclosure provides a method and a polar code decoder for determining a to-be-flipped bit position when performing a successive cancellation list flip operation. The method includes: obtaining a polar code decoding tree generated by performing a successive cancellation list (SCL) operation on a polar code segment, and the polar code segment includes multiple bit positions, and each bit position in the polar code decoding tree includes multiple surviving paths and multiple pruned paths; in a post-processing stage for the SCL operation, estimating a correct path probability of each of the surviving paths and the pruned paths of the i-th bit position and accordingly estimating a reliability for the i-th bit position; selecting a specific bit position among the bit positions based on the reliability of each bit position; and performing an SCL flip operation on the polar code decoding tree based on the specific bit position.

8. 发明授权

US09973217B2 SISO (soft input soft output) system for use in a wireless communication system and an operational method thereof 有权
公开(公告)号：US09973217B2
公开(公告)日：2018-05-15
申请号：US14946264
申请日：2015-11-19
申请人： NATIONAL TSING HUA UNIVERSITY
发明人： Yeong-Luh Ueng , Wei-Cheng Sun , Wei-Hsuan Wu , Chia-Hsiang Yang
IPC分类号： H03M13/00 , H03M13/29
CPC分类号： H03M13/2957
摘要： An iterative decoding device applied for a SISO (soft input soft output) system is disclosed, which comprises an operational control unit, a first decoder, and a second decoder. The operational control unit is operative to receive an encoded signal and divide the encoded signal into at least one frame. The first decoder is operative to receive each of the at least one frame and derive a renewed intrinsic information by a first iteration operation. The second decoder is operative to derive soft-information by a second iteration operation based on the renewed intrinsic information, and then transmit the soft-information back to the first decoder for the iteration operation of the next renewed intrinsic information. The operational control unit makes the at least one frame to be calculated respectively by the first decoder and the second decoder, thereby improving the efficiency and error ratio of a receiver.

9. 发明申请

US20160085723A1 METHOD OF FINDING A MINIMUM AND MINIMUM FINDER UTILIZING THE SAME 审中-公开
标题翻译：发现最小和最小发现者的方法
公开(公告)号：US20160085723A1
公开(公告)日：2016-03-24
申请号：US14614372
申请日：2015-02-04
申请人： NATIONAL TSING HUA UNIVERSITY
发明人： Yeong-Luh Ueng , Mao-Ruei Li
IPC分类号： G06F17/18
CPC分类号： G06F17/18 , G06F7/544
摘要： A method of finding a minimum and a minimum finder utilizing the same are provided. The method, adopted by the minimum finder, determining a minimum and a probabilistic second minimum from a plurality of inputs, includes: providing a plurality of Minimum-Value Generators (MVG) to form a binary tree, wherein each MVG receives two of the plurality of inputs, compares the values of the two inputs to output a comparison result; and receiving, by a minimum-and-second-minimum generator, the comparison results of two of the plurality of MVGs to generate the minimum and the probabilistic second minimum; wherein the minimum-and-second-minimum generator is not connected to a MVG in a top layer of the binary tree.
摘要翻译：提供了一种寻找利用其的最小和最小取景器的方法。由最小取景器采用的由多个输入确定最小值和概率第二最小值的方法包括：提供多个最小值生成器（MVG）以形成二叉树，其中每个MVG接收多个输入中的两个的输入，比较两个输入的值以输出比较结果; 并且通过最小二次最小生成器接收所述多个MVG中的两个MVG的比较结果以生成所述最小和所述概率第二最小值; 其中所述最小二次最小生成器未连接到所述二叉树的顶层中的MVG。

10. 发明授权

US08977934B2 Method of early termination of channel decoding by re-encoding 有权
标题翻译：通过重新编码提前终止信道解码的方法
公开(公告)号：US08977934B2
公开(公告)日：2015-03-10
申请号：US13758483
申请日：2013-02-04
申请人： National Tsing Hua University
发明人： Yeong-Luh Ueng , Mao Ruei Li
IPC分类号： H03M13/00 , H03M13/37 , G06F11/10 , H03M13/29 , H03M13/11
CPC分类号： H03M13/3776 , G06F11/10 , H03M13/1128 , H03M13/2951 , H03M13/2975 , H03M13/3738 , H03M13/3753
摘要： A system providing early termination for channel decoding by re-encoding including a decoding unit, an encoding unit connected to the decoding unit, and a checking unit connected to the decoding unit and to the encoding unit. Via the system, decoded message words produced from the decoding unit are sent back to the encoding unit for re-encoding. Re-encoded words are compared to the decoded codewords by the checking unit and, if they are completely the same, the decoding action of the decoding unit is terminated. The system reduces power consumption and offers a simplified structure, improved decoding throughput, and reduced hardware complexity.
摘要翻译：一种通过重新编码提供信号解码提前终止的系统，包括解码单元，连接到解码单元的编码单元以及连接到解码单元和编码单元的检查单元。通过系统，从解码单元产生的解码消息字被发送回编码单元进行重新编码。重新编码的字通过检查单元与解码的码字进行比较，并且如果它们完全相同，则解码单元的解码动作终止。该系统降低功耗并提供简化的结构，提高解码吞吐量，降低硬件复杂度。

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