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Look-up Table Based Deferred-Iteration Aided Low-Complexity Turbo Hybrid ARQ

Chen, Hong, Maunder, Robert G. and Hanzo, Lajos (2011) Look-up Table Based Deferred-Iteration Aided Low-Complexity Turbo Hybrid ARQ IEEE Transactions on Vehicular Technology, 60, (7), pp. 3045-3053.

Record type: Article


Since the introduction of turbo code aided Hybrid Automatic Repeat reQuest (HARQ) schemes, their complexity reduction has drawn research attention. In our previous work, we proposed an Early Stopping (ES) strategy for a turbo HARQ scheme, which results in a beneficial complexity reduction, while maintaining a high throughput. However, this scheme was designed to strike a compromise across the full range of channel conditions. As a further advance, in this paper, we propose a new Deferred Iterations (DI) strategy, which is specifically designed for taking into account the prevalent channel conditions, as characterized by the Extrinsic Information Transfer (EXIT) chart tunnel opening. More specifically, the DI strategy delays the commencement of turbo decoding until an open EXIT chart tunnel appears. Our simulation results demonstrate that the complexity of the proposed DI aided turbo HARQ schemes is reduced by up to 50%, which is achieved without compromising the Packet Loss Ratio (PLR) or throughput.

PDF HARQComplexityLUT.pdf - Accepted Manuscript
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Published date: September 2011
Organisations: Southampton Wireless Group


Local EPrints ID: 272538
ISSN: 0018-9545
PURE UUID: 16ca23ba-5428-40a2-a5e8-3af756c5ea30
ORCID for Robert G. Maunder: ORCID iD

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Date deposited: 05 Jul 2011 11:00
Last modified: 18 Jul 2017 06:23

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Author: Hong Chen
Author: Robert G. Maunder ORCID iD
Author: Lajos Hanzo

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