Orthogonal polyphase code sets design for MIMO radar using Tabu Search

Orthogonal polyphase code sets with low aperiodic autocorrelation sidelobe peak (ASP) values and aperiodic cross-correlation peak (CP) values, can be used in multiple input multiple output (MIMO) radar systems to reduce the interference between different signals. Tabu Search (TS) algorithm is proposed to optimize such orthogonal polyphase code sets with good autocorrelation and cross-correlation properties. The phase values of designed sequences are randomly distributed, which results in good properties of polyphase code sets. Some of the synthesized results are presented, and the properties of the sequences are shown to be better than those of sequences designed by other algorithms. Some relations of performances of polyphase code sets to the code length and the set size are discussed.