Distributed SR‐LDPC codes over multiple‐access relay channel and its applications in cloud storage

Sun, Rong; Cai, Xinye; Liu, Jingwei; Kwak, Kyung Sup

doi:10.1002/cpe.3405

Cited by 3 publications

(3 citation statements)

References 19 publications

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“…These codes had low computational complexities and repair traffic by keeping the row weight of the PCM constant or low, thereby increasing reliability. In another study [15], the author used erasure codes for DSS and proved that they have a higher mean time to failure than replication-based systems with similar storage overheads and bandwidth requirements. In another study [16], the author analyzed the performance of three LDPC codes: systematic, nonsystematic, and irregular repeat accumulate LDPC codes for wide-area network storage applications.…”

Section: Literature Reviewmentioning

confidence: 99%

Novel construction of quasi‐cyclic low‐density parity‐check codes with variable code rates for cloud data storage systems

Bhuvaneshwari

Tharini

2022

ETRI Journal

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This paper proposed a novel method for constructing quasi-cyclic low-density parity-check (QC-LDPC) codes of medium to high code rates that can be applied in cloud data storage systems, requiring better error correction capabilities. The novelty of this method lies in the construction of sparse base matrices, using a girth greater than 4 that can then be expanded with a lift factor to produce high code rate QC-LDPC codes. Investigations revealed that the proposed large-sized QC-LDPC codes with high code rates displayed low encoding complexities and provided a low bit error rate (BER) of 10 À10 at 3.5 dB E b /N 0 than conventional LDPC codes, which showed a BER of 10 À7 at 3 dB E b /N 0 . Subsequently, implementation of the proposed QC-LDPC code in a softwaredefined radio, using the NI USRP 2920 hardware platform, was conducted. As a result, a BER of 10 À6 at 4.2 dB E b /N 0 was achieved. Then, the performance of the proposed codes based on their encoding-decoding speeds and storage overhead was investigated when applied to a cloud data storage (GCP). Our results revealed that the proposed codes required much less time for encoding and decoding (of data files having a 10 MB size) and produced less storage overhead than the conventional LDPC and Reed-Solomon codes. K E Y W O R D Sbit error rate, cloud data storage, erasure correction capability, low-density parity-check codes, parity-check matrix, quasi-cyclic low-density parity-check codes

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Section: Literature Reviewmentioning

confidence: 99%

Novel construction of quasi‐cyclic low‐density parity‐check codes with variable code rates for cloud data storage systems

Bhuvaneshwari

Tharini

2022

ETRI Journal

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“…In terms of encoding with cloud, a novel encoding procedure was proposed in the article [13] that resembles semi-random low-density parity-check (SR-LDPC) codes in both structure and performance. A proxy-based storage system for fault-tolerant multiple-cloud storage was presented in the article [14], which achieves costeffective repair for a permanent single-cloud failure.…”

Section: Introductionmentioning

confidence: 99%

Service-oriented mobile multimedia cooperative storing and delivery scheme based on opportunistic cloud coding and content-centric cloud compression

Lin

2016

J Wireless Com Network

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In order to improve the quality of multimedia communication and mobile users, the work efficiency of the cloud platform, the service-oriented mobile multimedia cooperative storing, and the delivery scheme were proposed based on opportunistic cloud coding and content-centric cloud compression. Firstly, according to the video frame and the multimedia content centric, the multimedia data compression algorithm was established based on time domain and frequency domain, which combined the image pixel scale and the component. Then, the opportunity cloud encoding program was proposed through the distortion scattering and the opportunity to cooperate with the cloud device control. Finally, the real-time transmission and cooperative feedback control of mobile multimedia streaming video content was proposed based on user requirements and service-driven demands. Experimental results show that the proposed scheme can provide high peak signal-to-noise ratio (PSNR) for large scale video frame transmission and keep high consistency and robustness from subjective experience to objective experience. In addition, the proposed scheme can significantly reduce the failure rate and improve the end-to-end communication performance.

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“…In the sixth paper , the authors present distributed Semi‐Random Low Density Parity Check (SR‐LDPC) codes over multiple‐access relay channel and its applications in cloud storage. They propose a novel encoding procedure to realize codes that resemble SR‐LDPC codes in both structure and performance.…”

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confidence: 99%

Advances on cloud services and cloud computing

Barolli

Chen

Xhafa

2014

Concurrency and Computation

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EDITORIALAdvances on cloud services and cloud computing As cloud computing becomes prevalent, many organizations outsource the expensive computing and storage into the cloud servers. This brings many benefits including relief of the burden for storage management, universal data access with independent geographical locations, and avoidance of capital expenditure on hardware, software, and personnel maintenances. Despite the tremendous benefits, the outsource storage inevitably suffers from the security, privacy, trustworthiness, and the access of outsourced data. To address these issues, there has been increased interest to propose and design new algorithms and methodologies for cloud computing and cloud services.This special issue brings together high quality contributions in these research areas. The papers of the special issue have also identified and discussed the challenges in the field that will lead to new solutions and applications for cloud computing and cloud services.The special issue consists of 12 papers organized as follows. In the first paper [1], the authors propose the guidelines of a holistic security model in online collaborative learning through an effective trustworthiness. They consider a parallel processing approach, which can considerably decrease the time of data processing, thus allowing for building relevant trustworthiness models to support learning activities even in real time. The authors used a distributed infrastructure, such as Hadoop and cluster computing, to implement and evaluate the proposed approach for massive processing of log data. The experimental results showed the feasibility of coping with the problem of structuring and processing ill-formatted, heterogeneous, large log files to extract information on trustworthiness indicators and levels from learning groups and ultimately fill a global framework devoted to improve information security in e-learning in real time.In the second paper [2], the authors present a ciphertext-policy attribute-based proxy reencryption scheme for data sharing in public clouds. They proposed a new single-hop unidirectional Ciphertext-Policy Attribute-Based Proxy Re-Encryptio (CP-ABPRE) scheme, which supports attribute-based re-encryption with any monotonic access structure, to tackle the open problem left by the existing CP-ABPRE schemes. The authors showed that the proposed scheme can be proved secure in the random oracle model under the decisional q-parallel bilinear Diffie-Hellman exponentiation assumption.In the third paper [3], the authors propose Ontology as a Service (OaaS), where the ontology tailoring process serves as a service in the cloud. To illustrate OaaS, in this paper, they propose sub-ontology extraction and extension, whereby multiple sub-ontologies are extracted from various source ontologies and then these extracted sub-ontologies are extended to form a complete ontology to be used by the user. The authors use a maximum extraction method to facilitate this. Unified Medical Language System (UMLS) metathesaurus ontology is us...

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Distributed SR‐LDPC codes over multiple‐access relay channel and its applications in cloud storage

Cited by 3 publications

References 19 publications

Novel construction of quasi‐cyclic low‐density parity‐check codes with variable code rates for cloud data storage systems

Novel construction of quasi‐cyclic low‐density parity‐check codes with variable code rates for cloud data storage systems

Service-oriented mobile multimedia cooperative storing and delivery scheme based on opportunistic cloud coding and content-centric cloud compression

Advances on cloud services and cloud computing

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