Goodput Analysis and Link Adaptation for IEEE 802.11a Wireless LANs
IEEE Transactions on Mobile Computing
Rate adaptation via link-layer feedback for goodput maximization over a time-varying channel
IEEE Transactions on Wireless Communications
A cross-layer perspective on rateless coding for wireless channels
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Performance of hybrid-ARQ in block-fading channels: a fixed outage probability analysis
IEEE Transactions on Communications
The throughput of hybrid-ARQ protocols for the Gaussian collision channel
IEEE Transactions on Information Theory
The MIMO ARQ Channel: Diversity–Multiplexing–Delay Tradeoff
IEEE Transactions on Information Theory
Performance of hybrid-ARQ in block-fading channels: a fixed outage probability analysis
IEEE Transactions on Communications
Transmit diversity vs. spatial multiplexing in modern MIMO systems
IEEE Transactions on Wireless Communications
| Hi-index | 0.00 |
This paper studies the tradeoff between channel coding and ARQ (automatic repeat request) in Rayleigh blockfading channels. A heavily coded system corresponds to a low transmission rate with few ARQ retransmissions, whereas lighter coding corresponds to a higher transmitted rate but more retransmissions. The optimum error probability, where optimum refers to the operating point that maximizes the average successful throughput, is derived and is shown to be a decreasing function of the average signal-to-noise ratio and of the channel diversity order. A general conclusion of the work is that the optimum error probability is quite large (e.g., 10% or larger) for reasonable channel parameters, and that operating at a very small error probability can lead to a significantly reduced throughput.