Elements of information theory
Elements of information theory
Foundations and Trends® in Networking
XORs in the air: practical wireless network coding
IEEE/ACM Transactions on Networking (TON)
Opportunistic scheduling for wireless network coding
IEEE Transactions on Wireless Communications
Codecast: a network-coding-based ad hoc multicast protocol
IEEE Wireless Communications
IEEE Transactions on Information Theory
Slepian-Wolf coding over broadcast channels
IEEE Transactions on Information Theory
A Random Linear Network Coding Approach to Multicast
IEEE Transactions on Information Theory
Full length article: On coding for reliable communication over packet networks
Physical Communication
Hi-index | 0.00 |
Network coding allows to exploit spatial diversity naturally present in mobile wireless networks and can be seen as an example of cooperative communication at the link layer and above. Such promising technique needs to rely on a suitable physical layer in order to achieve its best performance. In this paper, we present an opportunistic packet scheduling method based on physical layer considerations. We extend channel adaptation proposed for the broadcast phase of asymmetric two-way bidirectional relaying to a generic number M of sinks and apply it to a network context. The method consists of adapting the information rate for each receiving node according to its channel status and independently of the other nodes. In this way, a higher network throughput can be achieved at the expense of a slightly higher complexity at the transmitter. This configuration allows to perform rate adaptation while fully preserving the benefits of channel and network coding. We carry out an information theoretical analysis of such approach and of that typically used in network coding. Numerical results based on nonbinary LDPC codes confirm the effectiveness of our approach with respect to previously proposed opportunistic scheduling techniques.