Minimum Cost Mirror Sites Using Network Coding: Replication versus Coding at the Source Nodes

Minimum cost mirror sites using network coding: Replication vs. coding at the source nodes

Content distribution over networks is often achieved by using mirror sites that hold copies of files or portions thereof to avoid congestion and delay issues arising from excessive demands to a single location. Accordingly, there are distributed storage solutions that divide the file into pieces and place copies of the pieces (replication) or coded versions of the pieces (coding) at multiple so...

Minimum cost content distribution using network coding : Replication vs

Large scale content distribution over the internet has been the focus of numerous studies in recent years. In the traditional server-client model, the server may suffer from overload when a popular file stored at the server is frequently requested. In order to reduce the cost at servers and decrease the retrieval time for clients, distributed storage solutions that operate by dividing the file ...

Minimum-Cost Subgraphs for Joint Distributed Source and Network Coding

We consider multicast of correlated sources over a network. Assuming the use of random network coding, we provide a linear optimization formulation for allocation of link rates in the network, also known as subgraph construction. Such an approach requires joint distributed source and network coding, which often has a lower cost than of that required by separated source and network coding. We su...

Minimum cost multiple multicast network coding with quantized rates

In this paper, we consider multiple multicast sessions with intra-session network coding where rates over all links are integer multiples of a basic rate. Although having quantized rates over communication links is quite common, conventional minimum cost network coding problem cannot generally result in quantized solutions. In this research, the problem of finding minimum cost transmission for ...

Network Source Coding Using Entropy Constrained Dithered Quantization