On correlation values of M-phase spreading sequences of Markov chains
Hiroshi Fujisaki · IEEE Transactions on Circuits and Systems I Fundamental Theory and Applications · 2002
There has recently been intense interest in spreading sequences of Markov chains. It is experimentally found that the autocorrelation values of M-phase spreading sequences of some Markov chains always take real numbers. In this paper, we theoretically give a necessary and sufficient condition that the autocorrelation values of M-phase spreading sequences of Markov chains always take real numbers. We also discuss time synchronization using these sequences.