Construction of LDPC codes for higher burst-error detecting by YAO Chun-guang1, GE Xin2, LIU Ying-nan3, ZHANG Jian2

Subjects: “…LDPC codes…”
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Research on unequal error protection of irregular LDPC codes by MA Pi-ming, YUAN Dong-feng, YANG Xiu-mei

Subjects: “…irregular LDPC code…”
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On the designand performance of nonbinary LDPC codes on burst errorchannels by Bo ZHANG, Wei LIN, Chun-yuan LIU, Bao-ming BAI

Subjects: “…Q-ary LDPC codes…”
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Jointed LDPC codes design for half-duplex relay channels by Zi-qiang CHEN, Shan OUYANG, Hai-lin XIAO, Yue-lei XIE

Subjects: “…LDPC codes…”
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Quasi-cyclic extension based on PEG algorithm for construction of LDPC codes by LEI Jing1, WANG Jian-hui1, TANG Chao-jing1

“…Several important relations between the cycle structure on the Tanner graph and the parity-check matrix H of LDPC codes were proved.A new algorithm for constructing LDPC codes was proposed that introduced quasi-cyclic ex-tension method to PEG algorithm.After a basic matrix was constructed with PEG algorithm,circulant permutation ma-trices would replace the "1"s in the basic matrix.The new method could eliminate effectively the short cycles in the basic matrix without changing the degree distribution fraction of the basic matrix.Simulations show that the quasi-cyclic extended codes based on PEG algorithm have as good error correcting performance as the LDPC codes generated by PEG algorithm in the same conditions of code length,rate,degree distribution and decoding algorithm.The conclusion of contrastive analysis is that well-chosen cycle structures can improve the decoding performance obviously under the given degree distribution.The proposed algorithm can offer a good performance and low encoding complexity synchronously by taking advantage of the quasi-cyclic code’s characteristic that its parity-check matrix H has less superposition within the cycles.…”
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Semi-random and semi-algebraic structural design for IRA-LDPC codes by Li PENG, Qi ZHANG, Bo WANG, Tao CHEN

“…A method of semi-random and semi-algebraic structure was presented for constructing the low-density parity-check matrix that corresponds to the information bits of the IRA codes.Compared with the existing structural LDPC codes,the distinct advantage of the presented compact structural array for information-bit-corresponding matrix is that the position coordinate of each 1 element in this matrix can be calculated by a determinate algebraic expression,which not only reduces the consumption of memory resource for the random parity-check matrix,but also provides the potential probability for designing low complexity hardware circuit of the LDPC encoder/decoder.In addition,compared with the existing practical LDPC codes in industrial standard,the presented IRA-LDPC code is also slight preponderance in the performance of simulation in bit error rate and signal noise ratio (BER-SNB).…”
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Design of Network Service Transmission with LDPC Coding in Space Laser Communication by ZHANG Xiaole, TAN Xiaochuan, LI Zhe

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On the Performance of Rate-Compatible LDPC Codes under All-Integer Quantization Decoding by Patinya Muangkammuen, Wongpram Vongjampa, Puripong Suthisopapan

“…Moreover, this simple quantization scheme can also be applied to the hardware and cost-efficient rate-compatible LDPC codes.…”
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LDPC code reconstruction based on algorithm of finding low weight code-words by Pei-dong YU, Hua PENG, Ke-xian GONG, Ze-liang CHEN

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Short Blocklength Nonbinary Raptor-Like LDPC Coding Systems Design and Simulation by Jakub Hyla, Wojciech Sulek

“…We provide a procedure for constructing short NB QC-RL-LDPC codes with low encoding complexity and optimized graph structures. …”
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The Manifestation of Stopping Sets and Absorbing Sets as Deviations on the Computation Trees of LDPC Codes by Eric Psota, Lance C. Pérez

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Reconstruction of LDPC code sparse check matrix based on modified LBP decoding by ZHANG Tianqi, LI Chunyun, WU Xianyue, WU Yunge

“…In order to reconstruct the sparse check matrix of LDPC code, a sparse check matrix reconstruction algorithm for LDPC code at high BER was proposed based on modified LBP decoding. …”
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Novel construction of QC-LDPC codes with modified 2-D GRS codes by Ming ZHAO, Xiao-lin ZHANG

Subjects: “…QC-LDPC code…”
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Performance Analysis for Cooperative Communication System with QC-LDPC Codes Constructed with Integer Sequences by Yan Zhang, Feng-fan Yang, Weijun Song

“…Four different integer sequences constructing QC-LDPC code are compared with LDPC codes by using PEG algorithm, array codes, and the Mackey codes, respectively. …”
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Explicit construction of girth-eight QC-LDPC codes and its application in CRT method by Guo-hua ZHANG, Rong SUN, Xin-mei WANG

Subjects: “…QC-LDPC code…”
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Telecommand Rejection Probability in CCSDS-Compliant LDPC-Coded Space Transmissions With Tail Sequence by Rebecca Giuliani, Massimo Battaglioni, Marco Baldi, Franco Chiaraluce, Nicola Maturo

Subjects: “…LDPC codes…”
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Soft value flipping decoding algorithm for LDPC codes based on adjoint vectors sum by LIU Jian-quan1, XU You-yun1, CAI Yue-ming1

Subjects: “…LDPC code…”
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Analysis of stability condition for LDPC codes and optimizing degree sequences over mixed channel by Kang-ning SUN, Lin-hua MA, Le RU, Wen-tong FAN, Xing HU, Shao-cheng HUANG

“…Under the circumstance that white Gaussian noise and random erasures exist all at once,the stability condition for LDPC codes over mixed channel was proposed.And it was proved that a good degree sequence of LDPC codes was not optimized over mixed channel.It can also be proved by simulation.The random particle swarm optimization (RPSO) and simulated annealing (SA) algorithm were combined to find some capacity-approaching degree sequences over mixed channel with different erasure probabilities.The threshold of signal-to-noise ratio improves 1.615 9 dB than that of the classical degree sequences calculated by Gaussian approximation over mixed channel.These degree sequences are optimal for optical recording and frequency-hopping communication with narrow-band interference.…”
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High-rate quantum LDPC codes for long-range-connected neutral atom registers by Laura Pecorari, Sven Jandura, Gavin K. Brennen, Guido Pupillo

“…In this work, we analyze a family of high-rate Low-Density Parity-Check (LDPC) codes with limited long-range interactions and outline a near-term implementation in neutral atom registers. …”
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Quaternary Neural Belief Propagation Decoding of Quantum LDPC Codes With Overcomplete Check Matrices by Sisi Miao, Alexander Schnerring, Haizheng Li, Laurent Schmalen

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