スイッチ項付きＭ系列の性質について

Abstract

Using a M-sequence and 0-1 switching sequence, a new sequence is generated with xn=xn-p+xn-q+sj mod 2. The sequence is considered as tuple sequence. Where the tuple is a vector (xi, xi+1 ,..., xi+p-1), xi ∈ M-sequence. The switching sequence disturbs riginal sequence , then we get another tuple's random sequence. This sequence has period T2 or T1T2. The period is determined by phase of switching term for mother M-sequence. We have good statistical property for some examples. But if sw sequence having 1’s-term are very few, then statistical property is not good.