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Area-Efficient Early-Termination Technique for Belief-Propagation Polar Decoders

Department of Electronics Engineering, Chungnam National University, Daejeon 34134, Korea; [email protected]
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Electronics 2019, 8(9), 1001; https://doi.org/10.3390/electronics8091001
Received: 4 August 2019 / Revised: 27 August 2019 / Accepted: 4 September 2019 / Published: 6 September 2019
(This article belongs to the Section Circuit and Signal Processing)
Early-termination techniques for a belief-propagation (BP) decoder of polar codes can improve the decoding throughput by finishing a decoding iteration when an early-termination condition is satisfied. In the BP decoders, the early-termination condition plays an important role, as it affects decoding iteration savings. In this letter, an area-efficient early-termination criterion is proposed, which simplifies the previous threshold-based termination condition by completely eliminating redundant computations. According to the experimental results, the proposed structure for (1024, 512) polar codes can reduce 72.7%, 66.5%, and 59.7% of hardware resources without any degradation in the error-correction performance and decoding throughput compared to the previous threshold-based, information-BER (bit error rate)-based, and frozen-BER-based early-termination techniques, respectively. View Full-Text
Keywords: area-efficient decoder; belief-propagation decoder; early-termination technique; polar codes area-efficient decoder; belief-propagation decoder; early-termination technique; polar codes
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Choi, S.; Yoo, H. Area-Efficient Early-Termination Technique for Belief-Propagation Polar Decoders. Electronics 2019, 8, 1001.

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