Extended Barrel-Shifter for Versatile QC-LDPC Decoders

被引：16

作者：

Boutillon, Emmanuel ^{[1
]}

Harb, Hassan ^{[1
]}

机构：

[1] Univ Bretagne Sud, UMR 6285, CNRS, Lab STICC, F-56321 Lorient, France

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2020年 / 9卷 / 05期

关键词：

Barrel-shifter; circular-shift network; LDPC decoder; 5G standard; NETWORK;

D O I：

10.1109/LWC.2020.2964208

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this letter, 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 stateof-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.

引用

页码：643 / 647

页数：5

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