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

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
1063-8210
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
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), pp. 14-22.

Record type: Article

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.

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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
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 20 Dec 2010 15:32
Last modified: 10 Nov 2017 00:20

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Contributors

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

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