Design of a New Differential Chaos-Shift-Keying System for Continuous Mobility

Francisco J. Escribano, Georges Kaddoum, Alexandre Wagemakers, Pascal Giard
2016 IEEE Transactions on Communications  
Conventional Differential Chaos-Shift-Keying systems (DCSK) are not the most suitable for supporting continuous-mobility scenarios. Therefore, in this paper an improved Continuous-Mobility Differential Chaos-Shift-Keying system (CM-DCSK) is presented that provides greater agility and improved performance in fast fading channels without accurate channel estimation while still being simple compared to a conventional DCSK system. A new DCSK frame signal is designed to reach this goal. In our new
more » ... ame design, each reference sample is followed by a data carrier sample. This modification of the system design reduces the hardware complexity of DCSK because it requires a shorter wideband delay line, and significantly improves the performance over fast fading channels while keeping the noncoherent nature of the transmission system. Once the design is explained, the bit error rate performance is computed over a multipath fast fading channel and compared to the conventional DCSK system. Simulation results confirm the advantages of this new non-coherent spread-spectrum design that can support mobility.
doi:10.1109/tcomm.2016.2538236 fatcat:csuznga3qrgodlrpxws7z3p4gy