Energy Optimization For Hybrid ARQ With Turbo Coding: Rate Adaptation and Allocation
| Autor: | Laurence B. Milstein, Pamela C. Cosman, Bentao Zhang |
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| Rok vydání: | 2020 |
| Předmět: |
Technology
Physics::Instrumentation and Detectors Computer Networks and Communications Computer science Aerospace Engineering Hybrid automatic repeat request Data_CODINGANDINFORMATIONTHEORY rate allocation Engineering Affordable and Clean Energy Information and Computing Sciences Turbo code Forward error correction Electrical and Electronic Engineering Computer Science::Information Theory ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Transmitter Energy consumption Code rate Transmission (telecommunications) Channel state information turbo code Automotive Engineering Hybrid ARQ Automobile Design & Engineering Algorithm rate adaptation Communication channel |
| Zdroj: | IEEE Transactions on Vehicular Technology, vol 69, iss 10 |
| ISSN: | 1939-9359 0018-9545 |
| Popis: | We consider incremental redundancy (IR) hybrid automatic repeat request (HARQ) over independent block-fading channels with turbo coding. We consider different cases of channel state information (CSI) at the transmitter: the transmitter has no knowledge of any CSI, or knows the CSI in previous transmission rounds through a perfect feedback channel, or knows both current and previous CSI. The transmitter decides the forward error correction code rate based on the CSI it has. We minimize the energy consumption of turbo-coded HARQ, subject to a packet loss rate constraint. Numerical results show that the energy consumption of HARQ decreases when more CSI information is available at the transmitter. We also compare IR combining with Chase combining and the system without combining, and IR combining yields the least energy consumption. |
| Databáze: | OpenAIRE |
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