A Low-Complexity Turbo Decoder Architecture for Energy-Efficient Wireless Sensor Networks
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, 21, (1), 14-22.
- Accepted Version
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.
|Keywords:||energy-efficient, error-correcting code, turbo code, Log-BCJR algorithm|
|Divisions:||Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Comms, Signal Processing & Control
Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Electronic & Software Systems
|Date Deposited:||20 Dec 2010 15:32|
|Last Modified:||27 Jul 2013 01:12|
|Contact Email Address:||firstname.lastname@example.org|
|Further Information:||Google Scholar|
|ISI Citation Count:||0|
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