AMC and HARQ: How to Increase the Throughput
| Autor: | Mohammed Jabi, Benoit Pelletier, Mustapha Benjillali, Abdellatif Benyouss, Leszek Szczecinski |
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| Rok vydání: | 2018 |
| Předmět: |
FOS: Computer and information sciences
Computer science Network packet Computer Science - Information Theory Information Theory (cs.IT) Hybrid automatic repeat request 020302 automobile design & engineering 020206 networking & telecommunications Link adaptation Throughput 02 engineering and technology Data_CODINGANDINFORMATIONTHEORY 0203 mechanical engineering Computer engineering 0202 electrical engineering electronic engineering information engineering Turbo code Electrical and Electronic Engineering Decoding methods Communication channel |
| DOI: | 10.48550/arxiv.1802.06933 |
| Popis: | In this paper, 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 the so-called layer-coded HARQ (L-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 this paper indicate that L-HARQ can provide significant throughput gains compared to the conventional HARQ. The L-HARQ is also implemented using turbo codes, indicating that the throughput gains also materialize in practice. |
| Databáze: | OpenAIRE |
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