Cross-layer design of network-coded transmission with a delay constraint
Author(s)Du, Jinfeng; Adams, David Christopher; Medard, Muriel
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We investigate the cross-layer design of wireless networks where end-to-end data transmission is subject to delay constraint and there is no end-to-end feedback. The transmission is coded by random linear network coding (RLNC) on packet level to recover from packet erasures and by forward error-correction coding (FEC) on bit level to combat channel distortions. Based on the two-layer model developed by Adams et al. where the end-to-end coded transmission is characterized by a throughput-reliability function, we formulate the cross-layer design as a goodput optimization problem relax the integrality constraint. We show that for single-hop transmissions there exists a globally optimal operating point for the relaxed problem. For multiple-hop transmissions, the goodput function is component-wise concave with respect to the physical layer data rate over each individual link.
DepartmentMassachusetts Institute of Technology. Research Laboratory of Electronics
2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
Institute of Electrical and Electronics Engineers (IEEE)
Du, Jinfeng, et al. "Cross-Layer Design of Network-Coded Transmission with a Delay Constraint." 2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 28 June - 1 July, 2015, Stockholm, Sweden, IEEE, 2015, pp. 156–60.
Author's final manuscript