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Some new results on cross correlation of $p$-ary $m$-sequence and its decimated sequence
Wenbing Chen Jinquan Luo Yuansheng Tang Quanquan Liu
Let $p$ be an odd prime, $n=2m$, and $n/\gcd(k,n)$ be odd. In this paper, we study the cross correlation between a $p$-ary $m$-sequence $(s_{t})$ of period $p^{n}-1$ and its decimated sequence $(s_{dt})$ where $d$ satisfies $d(p^k+1)\equiv p^m+1 \pmod {p^n-1}$. Our results show that the cross-correlation function is six-valued and the distribution of the cross correlation is also completely determined.
keywords: $p$-ary sequence exponential sum Cross correlation quadratic form.

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