| Texto completo | |
| Autor(es): |
Belli, Roberto
;
Runge, Cristhof
;
Portugheis, Jaime
;
Finamore, Weiler
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Optics Communications; v. 509, p. 5-pg., 2022-01-15. |
| Resumo | |
A visible light communication (VLC) system with intensity modulation and direct detection is considered. A channel coding scheme based on a binary low-density parity-check (LDPC) code and M-ary pulse amplitude modulation (PAM) is designed. The LDPC encoder is followed by a many-to-one mapper. This mapper induces the input distribution for the non-equally spaced M-PAM alphabet under a desired dimming target. No auxiliary coding technique for DC-balance is needed. The coded scheme using non-equally probable M-PAM levels outperforms the use of equally probable levels showing capacity-approaching performance. Moreover, the scheme is flicker-free for typical information rates of a VLC system. The main advantage of the proposed scheme is that it does not incur any coding rate loss compared to other similar schemes in the literature. (AU) | |
| Processo FAPESP: | 13/25977-7 - Segurança e confiabilidade da informação: teoria e prática |
| Beneficiário: | Marcelo Firer |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |