In this paper, we study the performance of network-coded cooperative wireless networks with channel coding over each wireless links. As a case study, the two-source two-relay network is considered and the performance vs. energy-efficiency trade-off of various network code designs (offering both equal and unequal error protection capabilities) over fast- and slowly-varying fading channels is studied. Furthermore, the performance of Maximum-Likelihood (ML-) optimal and low-complexity (Cooperative Maximal Ratio Combining, C-MRC) decoders at the destination are compared. Our analysis suggests that the performance vs. energy-efficiency trade-off of this network topology strongly depends on the inherent diversity and coding gains of both channel and network codes.
Joint Channel Network Decoding for the Two-Source Two-Relay Network
GRAZIOSI, FABIO
2012-01-01
Abstract
In this paper, we study the performance of network-coded cooperative wireless networks with channel coding over each wireless links. As a case study, the two-source two-relay network is considered and the performance vs. energy-efficiency trade-off of various network code designs (offering both equal and unequal error protection capabilities) over fast- and slowly-varying fading channels is studied. Furthermore, the performance of Maximum-Likelihood (ML-) optimal and low-complexity (Cooperative Maximal Ratio Combining, C-MRC) decoders at the destination are compared. Our analysis suggests that the performance vs. energy-efficiency trade-off of this network topology strongly depends on the inherent diversity and coding gains of both channel and network codes.Pubblicazioni consigliate
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