12 papers · ranked by Valyu relevance
Yingge Li, Haihua Hu, Jun Chen
As high-speed big-data communications impose new requirements on storage latency, low-density parity-check (LDPC) codes have become a widely used technology in flash-memory channels. However, the iterative LDPC decoding algorithm faces a high decoding latency problem due to its mechanism based on iterative message…
Li Deng, Kai Tao, Zhiping Shi, You Zhang + 5 more
In this paper, some optimized encoding and decoding schemes are proposed for the generalized LDPC convolutional codes (GLDPC-CCs). In terms of the encoding scheme, a flexible doping method is proposed, which replaces multiple single parity check (SPC) nodes with one generalized check (GC) node. Different types of BCH…
Yunfeng Li, Yingchun Li, Nan Ye, Tianyang Chen + 6 more
'Junjie Zhang' 'Yi Fang' 'Yue Gao' 'Kai Niu' 'Feng Yin'] A high-throughput layered decoder for quasi-cyclic (QC) low-density parity-check (LDPC) codes is required for communication systems. The preferred way to improve the throughput is to insert pipeline stages and increase the operating frequency, which suffers from…
Predrag Ivaniš, Srdjan Brkić, Bane Vasić, Syed A. Jafar
We propose a novel variant of the gradient descent bit-flipping (GDBF) algorithm for decoding low-density parity-check (LDPC) codes over the binary symmetric channel. The new bit-flipping rule is based on the reliability information passed from neighboring nodes in the corresponding Tanner graph. The name…
Kun Zhu, Hongwen Yang, Davy P. Gaillot
To enhance the decoding efficiency of Globally Coupled (GC) LDPC codes, we incorporated Early Termination (ET) and Forced Convergence (FC) into the local/global two-phase decoding algorithm to expedite the decoding process. The two-phase decoding scheme integrates the ET technique to halt unnecessary iterations in the…
Wenbo Shi, Wenlong Xie, Jiashen Hu, Lishan Liu + 1 more
Future wireless networks require channel coding schemes that can provide high reliability, low latency, and strong adaptability under finite-blocklength and structurally heterogeneous transmission scenarios. Globally coupled low-density parity-check (GC-LDPC) codes are promising for such systems because their coupled…
Lingjun Kong, Haiyang Liu, Yuezhuang Shi, Jiacheng Miao + 1 more
In modern communication systems, the concatenation of a low-density parity-check (LDPC) code with a cyclic redundancy check (CRC) code is commonly used for error correction. In this paper, we propose a low-complexity two-stage scheme for decoding these codes using their concatenation structures. In the first stage, the…
Rachna Srivastava, Vincent C. Gaudet, Patrick Mitran
This paper describes a field-programmable gate array (FPGA) implementation of a fixed-point low-density lattice code (LDLC) decoder where the Gaussian mixture messages that are exchanged during the iterative decoding process are approximated to a single Gaussian. A detailed quantization study is first performed to find…
Yuxuan Sun, Liangbin Zhao, Jianguo Li, Ziyi Zhang + 3 more
'Xiangyuan Bu' 'Xiaomin Ma'] The traditional LDPC encoding and decoding system is characterized by low throughput and high resource consumption, making it unsuitable for use in cost-efficient, energy-saving sensor networks. Aiming to optimize coding complexity and throughput, this paper proposes a combined design of a…
Ying Chen, Jianrong Bao, Yanhai Shang, Chao Liu + 5 more
To obtain efficient channel codes with high power efficiency at moderate signal-to-noise ratios (SNRs), an efficient high-rate protograph quasi-cyclic (QC) low-density parity-check (LDPC) codes is optimally constructed. By an optimized protograph template, the code framework is firstly produced by the extensions of the…
Mengsheng Guan, Min Zhu, Baoming Bai, T. Aaron Gulliver
To improve the decoding performance of asynchronous sparse code multiple access (SCMA) systems over additive white Gaussian noise (AWGN) channels, this paper proposes a novel windowed joint detection and decoding algorithm for a rate-compatible (RC), LDPC code-based, incremental redundancy (IR) hybrid automatic repeat…
Canhua Yun, Juan Xiao, Jingjia Cao, Chunchun Shao + 3 more
4## DISCUSSION For DTC patients with intermediate or high risk of recurrence, surgical resection and subsequent RAI therapy are recommended as the first-line regimen to reduce local recurrence. It has been reported that LNMs and LNR had statistically significant effects on the prognosis of DTC patients. With the aid of…