Results 121 to 130 of about 1,996 (184)

Design and Analysis of Non-Binary LDPC-CPM System for Hybrid Check Matrix Construction Algorithm of WSN. [PDF]

Sensors (Basel), 2018
Meng J, Zhao D, Zhang L.
europepmc   +1 more source

High speed error correction for continuous-variable quantum key distribution with multi-edge type LDPC code. [PDF]

Sci Rep, 2018
Wang X, Zhang Y, Yu S, Guo H.
europepmc   +1 more source

From quantum communication fundamentals to decoherence mitigation strategies: Addressing global quantum network challenges and projected applications. [PDF]

Heliyon
Khan MA, Ghafoor S, Zaidi SMH, Khan H, Ahmad A.   +4 more
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Compressing construction of QC-LDPC codes

2008 11th IEEE Singapore International Conference on Communication Systems, 2008
Two compressing construction methods of quasi-cyclic LDPC (QC-LDPC) codes are proposed, which can be called recursive-compressing and single-compressing respectively. Selecting a good QC-LDPC code as the Mother, the son codes constructed through the compressing methods are still good codes, i.e., have high girth and few short cycles, moreover, they ...
null Shuqi Sun, null Wuyang Zhou
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Shortening for irregular QC-LDPC codes

IEEE Communications Letters, 2009
Shortening is a technique to obtain codes of shorter length and lower rate from a given LDPC code by putting infinite reliability on some variable nodes, whose positions are assumed to be available to both encoder and decoder. In this paper, we propose a shortening algorithm suitable for irregular QC-LDPC codes. The efficiency of the proposed algorithm
Xiaojian Liu, Xiaofu Wu, Chunming Zhao
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Efficient Decoder Implementation for QC-LDPC Codes

2006 International Conference on Communications, Circuits and Systems, 2006
Channel coding is an important building block in communication systems. Low-density parity-check codes is one kind of prominent error correcting codes being considered in next generation industry standards. This paper presents a memory efficient, very high speed decoder architecture suited for quasi-cyclic low-density parity-check codes using modified ...
Jin Sha, Minglun Gao, Zhongjin Zhang, Li li, Zhongfeng Wang   +4 more
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Construction of high-girth QC-LDPC codes

2008 5th International Symposium on Turbo Codes and Related Topics, 2008
We describe a hill-climbing algorithm that constructs high-girth quasi-cyclic low-density parity check (QC-LDPC) codes. Given a desired girth, the algorithm can find QC-LDPC codes of shorter block-length in much less time compared with the previously proposed ldquoguess-and-testrdquo algorithm.
null Yige Wang, J.S. Yedidia, S.C. Draper   +2 more
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Construction of high-rate QC-LDPC codes

The 2011 International Conference on Advanced Technologies for Communications (ATC 2011), 2011
In this paper, we construct high-rate quasi-cyclic low-density parity-check (QC-LDPC) codes with girth-10 based on shortened array codes. First, we derive analytic results on the maximum number of columns for shortened array codes of different girths. A code construction method inspired by the analysis is proposed for column-weight-three codes and is ...
null Xu Chen, Francis C.M. Lau
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Layered TPMP Decoding for QC-LDPC Codes

Applied Mechanics and Materials, 2012
This paper presents a layered two-phase message passing (L-TPMP) decoding algorithm for general quasi-cyclic low-density parity-check (QC-LDPC) codes, which not only achieves high hardware utilization efficiency (HUE), but also brings in great memory block reduction.
Ling Zhao, Yi Hou, Rong Ke Liu
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Joint source channel network coding using QC LDPC codes

2014 International Conference on Communication and Signal Processing, 2014
Motivated to develop a scheme that compresses, gives high throughput and adds robustness against channel noise, a new joint source channel network coding (JSCNC) using Quasi Cyclic Low Density Parity Check (QCLDPC) code is proposed for a sensor network with two source nodes communicating correlated information to multiple destination nodes.
P. Jesy, P. P. Deepthi
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