Probability Distributions Involving Gaussian Random Variables: A Handbook for Engineers, Scientists and Mathematicians
Applications of error-control coding
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
Cooperative Strategies and Capacity Theorems for Relay Networks
IEEE Transactions on Information Theory
Diversity-Multiplexing-Delay Tradeoff in Half-Duplex ARQ Relay Channels
IEEE Transactions on Information Theory
Practical relay networks: a generalization of hybrid-ARQ
IEEE Journal on Selected Areas in Communications
Finite-SNR diversity-multiplexing tradeoffs in fading relay channels
IEEE Journal on Selected Areas in Communications
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Automatic repeat request (ARQ) protocols deal with the situations where the selected data rate is not supported by the current channel realization. The inappropriate selection is motivated by the limited channel state information at the transmitter (CSIT). This work looks into how the ARQ protocols are applied to the half-duplex relay-assisted transmission with decode-and-forward relays by exploiting the ACK feedback channel of the terminals. Two implementations are tackled: 1) only the source or 2) source and relay manage the retransmissions under the pure-ARQ protocol. This work presents an analytical framework for the comparison of both options. The study allows the optimization of the bitrate and amount of resource allocated for the relay transmission phases.