In this paper, an improved multi-carrier differential chaos-shift keying (IMC-DCSK) system is proposed. Instead of transmitting the chaotic reference sequence on a predefined subcarrier as in the conventional MC-DCSK, in our system, a DCSK-modulated signal whose bit period consisting of a reference half and a databearing half is sent via this subcarrier. The remaining parallel bit streams are multiplied with the same repeated spreading sequence and then sent by the corresponding subcarriers. | Improved Multi-Carrier differential Chaos-Shift keying system: Design and analysis
