Extending Direct Sequence Spread-Spectrum for Secure Communication
Avinash Kumar, Ye Zhu · 2021
In this paper, we propose to extend the Direct Sequence Spread Spectrum (DSSS) communication scheme with a Hidden Markov Model-based Spread Spectrum (HSS) communication scheme. The main goal of HSS is to defeat existing autocorrelation-based attacks, which are proven effective on DSSS. HSS defeats the attacks by generating chip sequences randomly for each information bit with Hidden Markov Models. HSS, as a spread spectrum communication technique, still takes advantage of benefits brought by processing gain. The cost of resistance to the autocorrelation-based attacks for HSS is its lower BER performance in comparison with DSSS.