Year: 2011
Type: editorial
Abstract: The main idea in network coding was introduced in 2000 by Ahlswede et al.With network coding, an intermediate node can not only forward its incoming packets but also encode them.It has been shown that the use of network coding can enhance the performance of wired networks significantly.Recent works have indicated that network coding can also offer significant benefits for wireless networks.Communications over wireless channels are error-prone and unpredictable due to fading, mobility, and intermittent connectivity.Moreover, in wireless networks, transmissions are broadcasted and can be overheard by neighbors, which is treated in current systems as interference.Furthermore, security poses new challenges in wireless networks, where both passive and active attacks have quite different premises than in wired networks.Ideas in network coding promise to help toward all these issues, allowing to gracefully add redundancy to combat errors, take advantage of the broadcast nature of the wireless medium and achieve opportunistic diversity, exploit interference rather than be limited by it, and provide secure network communication against adversarial attacks.In this special issue, we have been able to put together six original research articles which we believe can carry the momentum further and take the wireless network coding research to the next level.One article investigates the energy efficiency benefit of using network code.The other article exploits the superposition principle of radio waves in improving network coding performance.Two articles suggest various network coding strategies for relay networks.The last two aim to design minimal decoding delay network coding schemes for broadcast networks.While pointing detailed explanation to these individual articles, we will briefly introduce them here one by one.
DOI: 10.1155/2010/359475
Language: English
Subfield: Computer Networks and Communications
Field: Computer Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,790
OpenAlex ID: W1993177656