A low-complexity turbo decoder architecture for energy-efficient wireless sensor networks
A low-complexity turbo decoder architecture for energy-efficient wireless sensor networks
Turbo codes have recently been considered for energy-constrained wireless communication applications, since they facilitate a low transmission energy consumption. However, in order to reduce the overall energy consumption, Look-Up- Table-Log-BCJR (LUT-Log-BCJR) architectures having a low processing energy consumption are required. In this paper, we decompose the LUT-Log-BCJR architecture into its most fundamental Add Compare Select (ACS) operations and perform them using a novel low-complexity ACS unit. We demonstrate that our architecture employs an order of magnitude fewer gates than the most recent LUT-Log-BCJR architectures, facilitating a 71% energy consumption reduction. Compared to state-of- the-art Maximum Logarithmic Bahl-Cocke-Jelinek-Raviv (Max- Log-BCJR) implementations, our approach facilitates a 10% reduction in the overall energy consumption at ranges above 58 m.
energy-efficient, error-correcting code, turbo code, Log-BCJR algorithm
14-22
Li, Liang
f8511be3-71c6-4792-a835-e8b2dfba8cdc
Maunder, Robert G.
76099323-7d58-4732-a98f-22a662ccba6c
Al-Hashimi, Bashir
0b29c671-a6d2-459c-af68-c4614dce3b5d
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
January 2013
Li, Liang
f8511be3-71c6-4792-a835-e8b2dfba8cdc
Maunder, Robert G.
76099323-7d58-4732-a98f-22a662ccba6c
Al-Hashimi, Bashir
0b29c671-a6d2-459c-af68-c4614dce3b5d
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Li, Liang, Maunder, Robert G., Al-Hashimi, Bashir and Hanzo, Lajos
(2013)
A low-complexity turbo decoder architecture for energy-efficient wireless sensor networks.
IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 21 (1), .
(doi:10.1109/TVLSI.2011.2177104).
Abstract
Turbo codes have recently been considered for energy-constrained wireless communication applications, since they facilitate a low transmission energy consumption. However, in order to reduce the overall energy consumption, Look-Up- Table-Log-BCJR (LUT-Log-BCJR) architectures having a low processing energy consumption are required. In this paper, we decompose the LUT-Log-BCJR architecture into its most fundamental Add Compare Select (ACS) operations and perform them using a novel low-complexity ACS unit. We demonstrate that our architecture employs an order of magnitude fewer gates than the most recent LUT-Log-BCJR architectures, facilitating a 71% energy consumption reduction. Compared to state-of- the-art Maximum Logarithmic Bahl-Cocke-Jelinek-Raviv (Max- Log-BCJR) implementations, our approach facilitates a 10% reduction in the overall energy consumption at ranges above 58 m.
Text
architecture_journal.pdf
- Accepted Manuscript
More information
e-pub ahead of print date: 2011
Published date: January 2013
Keywords:
energy-efficient, error-correcting code, turbo code, Log-BCJR algorithm
Organisations:
Electronic & Software Systems, Southampton Wireless Group
Identifiers
Local EPrints ID: 271820
URI: http://eprints.soton.ac.uk/id/eprint/271820
ISSN: 1063-8210
PURE UUID: 086562c2-4e80-4b3a-bf30-2a6405fba2d6
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Date deposited: 20 Dec 2010 15:32
Last modified: 18 Mar 2024 03:09
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Contributors
Author:
Liang Li
Author:
Robert G. Maunder
Author:
Bashir Al-Hashimi
Author:
Lajos Hanzo
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