Patent ID: 8611440
Filing Date: 2013-12-17
Classification: H04J,H04L

Abstract:
1. A method for generating sequences that are nearest to a set of sequences with minimum average cross-correlation, comprising: projecting, by a communications device, each element of the set of sequences to a nearest constellation point; converting, by the communications device, the set of sequences into a time domain representation; producing, by the communications device, a number of orthogonal cyclic shifts equal to a sequence length for each element in the set of sequences; performing, by the communications device, an inverse discrete Fourier Transform (IDFT) on the set of sequences; evaluating, by the communications device, a cubic metric of each root sequence of the set of sequences, each root sequence being identical to an original sequence; removing from the set of sequences, by the communications device, each sequence associated with each of the root sequence having the cubic metric that exceeds a threshold; and obtaining, by the communications device, a minimum, maximum cross-correlation for the set of sequences.