An upper bound on the aperiodic autocorrelation function for a maximal-length sequence (Corresp.)
D.V. Sarwate · IEEE Transactions on Information Theory · 1984
The magnitude of the out-of-phase aperiodic autocorrelation function for a maximal-length linear feedback shift register sequence of periodNis at most1 + (2/ \pi)(N + 1)^{1/2} \ln(4N/ \pi). Previously, the best upper bound was(N + 1)^{1/2} \ln (eN).