Chaotic sequence generation for a class of stochastic wireless channels

Chaotic sequences may be advantageous for secure communication. In this paper, a spreading sequence based direct sequence/spread spectrum (DSSS) communication system is proposed. The proposed scheme uses chaotic logistic map as the spreading sequences. The performance of the system is analyzed and demonstrated in a single path as well as multipath situation by means of computer simulation with additive white Gaussian noise, Rayleigh fading and selective fading channel conditions. Experiments reveal that the proposed system significantly outperforms the Gold code and Convolutional code DSSS-BPSK and QPSK system. The performance of the system is measured in terms of Bit Error Rate (BER), Symbol Error Rate (SER), Mutual Information, Computational time and Correlation function. Moreover, channel types are changed to MISO and MIMO and again, performance measures are evaluated.