Polyphase Sequences Design-Using MSAA

Sequences having the minimum peak aperiodic autocorrelation sidelobe level one (1) are called Barker Sequences. Such sequences have been used in numerous real-world applications such as channel estimation, radar and spread spectrum communication etc. Unfortunately, the longest known biphase and quadriphase Barker sequences are of lengths 13 and 15 respectively. In this paper Modified Simulated Annealing Algorithm (MSAA) is used to design thirty-two phase sequences, which have good autocorrelation properties. Some of the synthesized results are presented here. The properties of the sequences up to length 24 have Barker properties which were not reported in literature earlier. The sequences of lengths from 4 to 289 have autocorrelation properties better than Frank codes. The synthesized 32-phase sequence sets are promising for practical application to radar and spread spectrum communication systems.