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Optimal Packet Length for ARQ and HARQ I with Chase Combining

Ghassan Alnwaimi, Hatem Boujemaa,
Published in Springer
Volume: 45
Issue: 8
Pages: 6467 - 6474

In this paper, we derive the optimal packet length for automatic repeat request (ARQ) protocols and hybrid ARQ I (HARQ I) protocols with chase combining. Chase combining consists of a maximum ratio combination of received packets. The average signal-to-noise ratio is measured at the receiver and sent back to the transmitter to adapt packet length. The study is valid for any M-QAM (quadrature amplitude modulation). HARQ I protocol uses a convolutional encoder. Simulation results have shown that the proposed adaptive link layer protocol using optimal packet length allows 0.7–4 dB gains with respect to fixed packet length.

About the journal
JournalData powered by TypesetArabian Journal for Science and Engineering
PublisherData powered by TypesetSpringer
Open AccessNo