Fig. 12From: Research on alleviating nonlinear problem by data feature extraction and fusion based on DFT-spreadConstellation diagrams of the received data after 100Â km SSMF for: a traditional CO-OFDM, b DFT-S CO-OFDM, c the SLM DFT-S CO-OFDM and d the 2-ASK DFT-S CO-OFDM systemBack to article page