Comparison of coherent optical single-carrier and multi-carrier superchannel with FDM and FDE

Combined discrete Fourier transform precoding and clipping using direct detection optical OFDM

“…The DFT precoded-OFDM is also called as single-carrier frequency division multiplexing (SCFDM), which has been employed for the Long Term Evolution (LTE) of cellular systems. The research results of the literature [12,13] showed that SCFDM system outperforms conventional OFDM system in fiber nonlinearity reduction.…”

Roteamento, alocação de espectro e proteção compartilhada em redes ópticas elásticas utilizando aprendizagem profunda com sistema de inferência >i<fuzzy>/i<

“…As técnicas de modulação que permitem a composição do espectro do supercanal a partir de subportadoras estão agrupadas em duas categorias: portadora única (single carrier, SC) e múltiplas portadoras (multi-carrier, MC). Algumas dessas técnicas são a MC discrete Fourier transform (DFT)-based utilizando multiplexação por divisão ortogonal de frequência (orthogonal frequency-division multiplexing, OFDM), filter-bank-based MC, SC frequency division multiplexing (SCFDM) ou DFT-spread OFDM e Nyquist pulse-shaped SC [10][11][12][13].…”