This paper introduces a generalized fully digital hardware implementation of 1-D, 2-D and 3-D multiscroll chaos through sawtooth nonlinearities in a 3rd order ODE with the Euler approximation, wherein low-significance bits pass all NIST SP. 800-22 tests. The low-significance bits show good performance as spreading code for multiple-access DS-CDMA in AWGN and multipath environments, equivalent to Gold codes. This system capitalizes on complex nonlinear dynamics afforded by multi-scroll chaos to provide higher security than conventional codes with the same BER performance demonstrated experimentally on a Xilinx Virtex 4 FPGA with logic utilization less than 1.25% and throughput up to 10.92 Gbits/s. © 2013 IEEE.
Mansingka A.S., Zidan M.A., Radwan A.G., Salama K.N.
BER performance; Complex nonlinear dynamics; Digital hardware implementation; Euler approximation; Gold codes; Multi-path environments; Multiple access; Spreading codes; Hardware; Code division multiple access
Midwest Symposium on Circuits and Systems, Art. No. 6674902, PP. 1334 to 1338, Doi: 10.1109/MWSCAS.2013.6674902