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Deferred-Iteration Aided Low-Complexity Turbo Hybrid ARQ Relying on a Look-up Table

Chen, Hong, Maunder, Robert G. and Hanzo, Lajos (2011) Deferred-Iteration Aided Low-Complexity Turbo Hybrid ARQ Relying on a Look-up Table At GLOBECOM 2011, United States. 05 - 09 Dec 2011.

Record type: Conference or Workshop Item (Paper)


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.

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Published date: December 2011
Additional Information: Event Dates: 5-9 December 2011
Venue - Dates: GLOBECOM 2011, United States, 2011-12-05 - 2011-12-09
Organisations: Southampton Wireless Group


Local EPrints ID: 272597
PURE UUID: 7fdf488e-474f-4c4c-9959-81c12433c372
ORCID for Robert G. Maunder: ORCID iD

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Date deposited: 26 Jul 2011 10:34
Last modified: 18 Jul 2017 06:22

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

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