Results 71 to 80 of about 21,530 (259)

Quasi-Cyclic LDPC Codes based on Pre-Lifted Protographs

open access: yes, 2014
Quasi-cyclic low-density parity-check (QC-LDPC) codes based on protographs are of great interest to code designers because analysis and implementation are facilitated by the protograph structure and the use of circulant permutation matrices for ...
Costello Jr, Daniel J.   +2 more
core   +1 more source

Reduced-complexity decoding implementation of QC-LDPC codes with modified shuffling

open access: yesEURASIP Journal on Wireless Communications and Networking, 2021
Layered decoding (LD) facilitates a partially parallel architecture for performing belief propagation (BP) algorithm for decoding low-density parity-check (LDPC) codes.
A. Hasani, L. Lopacinski, R. Kraemer
semanticscholar   +1 more source

Classical channel bandwidth requirements in continuous variable quantum key distribution systems

open access: yesIET Quantum Communication, Volume 5, Issue 4, Page 601-611, December 2024.
The reconciliation method for continuous variable quantum key distribution (CV‐QKD) systems is usually chosen based on its reconciliation efficiency. Nonetheless, one must also consider the requirements of each reconciliation method in terms of the amount of information transmitted on the classical channel. Such may limit the achievable key rates.
Margarida Almeida   +3 more
wiley   +1 more source

A construction of the high-rate regular quasi-cyclic LDPC codes

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
In this paper, a scheme to construct the high-rate regular quasi-cyclic low-density parity-check (QC-LDPC) codes is developed based on the finite geometry low-density parity-check (LDPC) codes.
Qi Meng   +3 more
doaj   +1 more source

Entanglement-Assisted Quantum Quasi-Cyclic Low-Density Parity-Check Codes

open access: yes, 2009
We investigate the construction of quantum low-density parity-check (LDPC) codes from classical quasi-cyclic (QC) LDPC codes with girth greater than or equal to 6.
Brun, Todd A.   +2 more
core   +1 more source

Advanced channel coding schemes for B5G/6G networks: State‐of‐the‐art analysis, research challenges and future directions

open access: yesInternational Journal of Communication Systems, Volume 37, Issue 13, 10 September 2024.
This paper undertakes a review and analysis of advanced channel coding techniques with the aim of their scalability towards B5G/6G networks scenario. A comparative study is presented for channel coding candidates of futuristic networks. Concatenated and derived codes of convolutional, polar, LDPC, Rateless, and Space‐time coding schemes are reviewed ...
Abhilasha Gautam   +2 more
wiley   +1 more source

LDPC Decoder of High Speed Multi-Rate DVB-S2 Based on FPGA

open access: yesXibei Gongye Daxue Xuebao, 2019
A multi-rate LDPC decoder architecture for DVB-S2 codes based on FPGA is proposed. Through elementary transformation on the parity check matrices of DVB-S2 LDPC codes, a new matrix whose left is a QC sub-matrix and right is Transformation of Staircase ...

doaj   +1 more source

Analysis of reaction and timing attacks against cryptosystems based on sparse parity-check codes

open access: yes, 2019
In this paper we study reaction and timing attacks against cryptosystems based on sparse parity-check codes, which encompass low-density parity-check (LDPC) codes and moderate-density parity-check (MDPC) codes.
A Becker   +16 more
core   +1 more source

Reordered static layered schedule for 5G low‐density parity‐check codes

open access: yesElectronics Letters, Volume 60, Issue 7, April 2024.
A static layered schedule for the 5G low‐density parity‐check codes is proposed here. The proposed static layered schedule provides better error performance and faster convergence speed than state‐of‐the‐art. Abstract The error performance of the 5G low‐density parity‐check codes is significantly impacted by the update order of layers.
Yangcan Zhou, Zhongfeng Wang
wiley   +1 more source

Construction of Rate-Compatible Raptor-Like Quasi-Cyclic LDPC Code With Edge Classification for IDMA Based Random Access

open access: yesIEEE Access, 2019
Recently, rate-compatible raptor-like quasi-cyclic low-density parity-check (RL-QC-LDPC) codes, which are a typical class of multi-edge type LDPC codes with excellent performance and high flexibility, have been adopted in the technical specification of ...
Yushu Zhang   +3 more
doaj   +1 more source

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