1 research outputs found
Design and Analysis of a Multi-Carrier Differential Chaos Shift Keying Communication System
A new Multi-Carrier Differential Chaos Shift Keying (MC-DCSK) modulation is
presented in this paper. The system endeavors to provide a good trade-off
between robustness, energy efficiency and high data rate, while still being
simple compared to conventional multi-carrier spread spectrum systems. This
system can be seen as a parallel extension of the DCSK modulation where one
chaotic reference sequence is transmitted over a predefined subcarrier
frequency. Multiple modulated data streams are transmitted over the remaining
subcarriers. This transmitter structure increases the spectral efficiency of
the conventional DCSK system and uses less energy. The receiver design makes
this system easy to implement where no radio frequency (RF) delay circuit is
needed to demodulate received data. Various system design parameters are
discussed throughout the paper, including the number of subcarriers, the
spreading factor, and the transmitted energy. Once the design is explained, the
bit error rate performance of the MC-DCSK system is computed and compared to
the conventional DCSK system under an additive white Gaussian noise (AWGN) and
Rayleigh channels. Simulation results confirm the advantages of this new hybrid
design.Comment: This paper has been accepted in IEEE trans. on Communications (will
appear soon on IEEE explore). arXiv admin note: substantial text overlap with
arXiv:1303.255