Deferred-Iteration Aided Low-Complexity Turbo Hybrid ARQ Relying on a Look-up Table
Deferred-Iteration Aided Low-Complexity Turbo Hybrid ARQ Relying on a Look-up Table
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.
Chen, Hong
0f30c1b9-7831-4010-a81c-c6825f78af16
Maunder, Robert G.
76099323-7d58-4732-a98f-22a662ccba6c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
December 2011
Chen, Hong
0f30c1b9-7831-4010-a81c-c6825f78af16
Maunder, Robert G.
76099323-7d58-4732-a98f-22a662ccba6c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Chen, Hong, Maunder, Robert G. and Hanzo, Lajos
(2011)
Deferred-Iteration Aided Low-Complexity Turbo Hybrid ARQ Relying on a Look-up Table.
GLOBECOM 2011, Houston, Texas, United States.
05 - 09 Dec 2011.
(doi:10.1109/GLOCOM.2011.6134499).
Record type:
Conference or Workshop Item
(Paper)
Abstract
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, Houston, Texas, United States, 2011-12-05 - 2011-12-09
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 272597
URI: http://eprints.soton.ac.uk/id/eprint/272597
PURE UUID: 7fdf488e-474f-4c4c-9959-81c12433c372
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Date deposited: 26 Jul 2011 10:34
Last modified: 18 Mar 2024 03:09
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Contributors
Author:
Hong Chen
Author:
Robert G. Maunder
Author:
Lajos Hanzo
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