On the Crosscorrelation of Sequences Over GF(p) with Short Periods

On the Crosscorrelation of Sequences Over GF(p) with Short Periods
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DOI:
10.1109/18.746820
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发表时间:
1999
期刊:
IEEE Trans. Inf. Theory
影响因子:
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通讯作者:
Eva Nuria Müller
Eva Nuria Müller
中科院分区:
其他
文献类型:
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作者:
Eva Nuria Müller

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本文研究了互相关函数Cd(t)=/spl Sigma//sub i=1/(p/sup n-1/)/spl zeta/(a/sup i-t/-a/sup di/),其中/spl zeta/是复本原p次单位根,(a/sub i/)(i/spl isin/N/sub 0/)是长度为p/sup n/-1的最大线性移位寄存器序列,p是奇素数.对于p=3,n为奇数,d=p/sup n/+1/4+p/sup n/-1/2,我们证明了2/spl middot//spl radic/p/sup n/是1+C/sub d/(t)的绝对值的上界.对于任意奇素数p和p/sup k/+1,其中n/gcd/(n,k)不能被4整除,我们确定C/sub d/(t)的最大绝对值和C/sub d/(t)的值的个数.
We investigate the crosscorrelation function Cd(t)=/spl Sigma//sub i=1/(p/sup n-1/) /spl zeta/(a/sup i-t/-a/sup di/), where /spl zeta/ is a complex primitive pth root of unity, (a/sub i/)(i/spl isin/N/sub 0/) is a maximal linear shift-register sequence of length p/sup n/-1, and p is an odd prime. For p=3, n odd, and d=p/sup n/+1/4+p/sup n/-1/2 we show that 2/spl middot//spl radic/p/sup n/ is an upper bound for the absolute value of 1+C/sub d/(t). For any odd prime p and p/sup k/+1, where n/gcd/(n,k) is not divisible by 4 we determine the maximum absolute value of C/sub d/(t) and the number of values of C/sub d/(t).