Network coding based mechanism to provide reliable multimedia content distribution in harsh environments

In this chapter, the digital fingerprinting technology that is used to trace illegal distributors in multimedia content distribution is investigated. Firstly, the background and basic knowledge of digital fingerprinting- based multimedia distribution are reviewed. Then, some existing fingerprinting algorithms are introduced and compared. Additionally, the methods to embed the fingerprint securely are overviewed and analyzed. As an example, the secure audio distribution scheme is presented, and its performances are evaluated. Finally, some open issues and the future trends in digital fingerprinting are proposed. It is expected to provide valuable information to the students, engineers or researchers interested in this research topic.

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An Efficient Framework for Network Code based Multimedia Content Distribution in Hybrid P2P Network

Journal of Circuits System and Computers ◽

10.1142/s0218126620501571 ◽

2019 ◽

Vol 29 (10) ◽

pp. 2050157

Author(s):

M. Anandaraj ◽

P. Ganeshkumar ◽

K. Selvaraj ◽

K. P. Vijayakumar

Keyword(s):

Network Coding ◽

Content Distribution ◽

Network Code ◽

Coding System ◽

Topology Change ◽

Good Reliability ◽

Coding Scheme ◽

Stated Problem ◽

Hybrid P2p ◽

Multimedia Content Distribution

Most of the existing peer-to-peer (P2P) content distribution schemes carry out a random or rarest piece first content dissemination procedure to avoid duplicate transmission of the same pieces of data and rare pieces of data occurring in the network. This problem is solved using P2P content distribution based on network coding scheme. Network coding scheme uses random linear combination of coded pieces. Hence, the above-stated problem is solved easily and simply. Our proposed mechanism uses network coding mechanism in which several contents having the same message are grouped into different groups and coding operation is performed only within the same group. The interested peers are also divided into several groups with each group having the responsibility to spread one set of contents of messages. The coding system is designed to assure the property that any subset of the messages can be utilized to decode the original content as long as the size of the subset is suitably large. To meet this condition, dynamic smart network coding (DSNC) scheme is defined which assures the preferred property, then peers are connected in the same group to send the corresponding message, and connect peers in different groups to disseminate messages for carrying out decoding operation. Moreover, the proposed system is readily expanded to support topology change to get better system performance further in terms of reliability, link stress and throughput. The simulation results prove that the proposed system can attain 20–25% higher throughput than existing systems, good reliability, link failure and robustness to peer churn.

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