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A low-complexity turbo decoder architecture for energy-efficient wireless sensor networks

Record type: Article

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.

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Citation

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), pp. 14-22. (doi:10.1109/TVLSI.2011.2177104).

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
ORCID for Robert G. Maunder: ORCID iD orcid.org/0000-0002-7944-2615

Catalogue record

Date deposited: 20 Dec 2010 15:32
Last modified: 24 Jul 2017 16:40

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Contributors

Author: Liang Li
Author: Robert G. Maunder ORCID iD
Author: Lajos Hanzo

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