TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Hasan, Fadhil S.
A1  - Valenzuela, Alejandro A.
T1  - Design and Analysis of an OFDM-Based Orthogonal Chaotic Vector Shift Keying Communication System
JF  - IEEE Access
N2  - We propose a new non-coherent multicarrier spread-spectrum system that combines orthogonal chaotic vector shift keying (OCVSK) and orthogonal frequency-division multiplexing (OFDM). The system enhances OCVSK by sending multiple groups of information sequences with the same orthogonal chaotic vector reference sequences over the selected subcarriers. Each group carries M information bits and is separated from other groups by orthogonal chaotic reference signals. We derive the information rate enhancement (IRE) and the energy saving enhancement (ESE) factors as well as the bit error rate theory of OFDM-OCVSK under additive white Gaussian noise and multipath Rayleigh fading channels and compare the results with conventional OCVSK systems. For large group numbers, the results show that the IRE and ESE factors approachM×100% andM/(M+1)×100%, respectively, and thus outperform OCVSK systems. The complexity analysis of the proposed scheme as compared with OFDM-DCSK shows a significant reduction in the number of complex multiplications required.
KW  - orthogonal frequency division multiplexing
KW  - Orthogonal chaotic vector shift keying
KW  - complexity analysis
KW  - energy efficiency
KW  - high information rate
KW  - OFDM-based DCSK
KW  - OFDM-based SR-QCSK
KW  - performance analysis
SN  - 2169-3536
SS  - 2169-3536
U6  - https://doi.org/10.1109/ACCESS.2018.2862862
DO  - https://doi.org/10.1109/ACCESS.2018.2862862
VL  - 6
SP  - 46322
EP  - 46333
PB  - IEEE
ER  -