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Article Dans Une Revue IEEE Wireless Communications Letters Année : 2020

Extended Barrel-Shifter for Versatile QC-LDPC Decoders

Résumé

In this paper, we present a Barrel-Shifter of size n extended by an additional layer that can handle any circular permutation on a vector of size m, m ≤ n, thanks to a specific initial positioning of the data. The construction of the so-called Extended Barrel-Shifter is motivated by the hardware decoder constraint related to the Low-Density Parity-Check (LDPC) code recently adopted for the 5G mobile standard. The proposed algorithm requires 42 % less multiplexers than the best state-of-the-art solution for n = 384 of the 5G LDPC standard. This proposal is also able to process several inputs in parallel without extra hardware cost.

Domaines

Electronique
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Dates et versions

hal-02441491 , version 1 (15-01-2020)

Identifiants

Citer

Emmanuel Boutillon, Hassan Harb. Extended Barrel-Shifter for Versatile QC-LDPC Decoders. IEEE Wireless Communications Letters, 2020, 9 (5), pp.643-647. ⟨10.1109/LWC.2020.2964208⟩. ⟨hal-02441491⟩
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