Throughput Increase Through Layered Coding for AMC with HARQ
Conference: European Wireless 2018 - 24th European Wireless Conference
05/02/2018 - 05/04/2018 at Catania, Italy
Proceedings: European Wireless 2018
Pages: 7Language: englishTyp: PDF
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Authors:
Jabi, Mohammed (Ecole de Technologie Superieure, Montreal, Canada)
Szczecinski, Leszek; Benyouss, Abdellatif (INRS-EMT, University of Quebec, Montreal, Canada)
Benjillali, Mustapha (Communication Systems Department, INPT, Rabat, Morocco)
Abstract:
In this work, we consider transmissions over block fading channels and assume that adaptive modulation and coding (AMC) and hybrid automatic repeat request (HARQ) are implemented. Knowing that in high signal-to-noise ratio, the conventional combination of HARQ with AMC is counterproductive from the throughput point of view, we adopt a layercoding strategy. Such a layered-coded HARQ (L-HARQ) allows consecutive packets to share the channel and preserves a great degree of separation between AMC and HARQ; this makes the encoding and decoding very simple and allows us to use the available/optimized codes. Numerical examples shown in the paper indicate that L-HARQ can provide significant throughput gains compared to the conventional HARQ.