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In this paper, a novel differential chaotic bitinterleaved coded modulation (DC-BICM) system is proposed for band-limited transmission. This system combines protographbased low density parity check codes with constellation-based M-ary differential chaos shift keying (DCSK) modulation by one bitwise interleaving. Bit error rate simulation results show that the system has higher coding gain compared with the constellation-based M-ary DCSK modulation system with the same spectral efficiency overdoi:10.1109/tcomm.2017.2719030 fatcat:3w33wvop3fhzrmyppfhs4ghd6e