Sixty-phase Sequences Design with Good Autocorrelation Properties
Sohan Pal Singh, KSubba Rao · IETE Journal of Research · 2011
AbstractA new Hybrid Algorithm (HA) is proposed as a statistical technique for obtaining approximate solutions to combinatorial optimization problems. The proposed algorithm is a combination of Threshold Accepting (TA) and Hamming Scan algorithms. It combines the good methodologies of these algorithms, such as global minimum converging property of TA algorithm and fast convergence rate of Hamming scan algorithm. HA is used to design sixty-phase sequences, which have good autocorrelation properties. Sixty-phase Barker sequences with length up to 18 only were reported in the literature. Whereas in this paper, sixty-phase Barker sequences up to lengths 26 are presented. The merit factors of synthesized sixty-phase Barker sequences are better than well-known binary Barker sequences. The sequences up to length 441 have autocorrelation peak sidelobe values better than well-known Frank codes. The synthesized sequences are promising for practical applications to radar and in communication. These sequences have co...