DFCWs Design Based on Improved DPSO

Abstract

Orthogonal discrete frequency coding waveforms(DFCWs) is an ideal quasi-orthogonal waveform. This paper analyses the ambiguity function of DFCWs and the results indicate that the correlation characteristics of DFCWs have only relationship with the code length and coding order. Based on the theoretical analysis, we defined the cross-correlation energy as the cost function, and used the improved discrete particle swarmoptimization(DPSO) to optimize the order of DFCWs. The new signal can effectively restrain the cross-correlation level between the two DFCWs. Simulation results verify the effectiveness of the designed DFCWs.

Optimal Polyphase Coded Signal Design

“…Therefore, an innovative MPSO method is proposed which solves the optimized problem with high dimension and gave efficient performance result. Roja et al [14] employed an accelerated continuous PSO for designing discrete frequency coded waveform in which better correlation properties in terms of Peak side lobe level ratio and integrated side lobe level ratio is obtained. Jingjun Li et al, [15] improvised the discrete particle swarm optimization algorithm and used in orthogonal discrete frequency coding waveforms which are used to generate the sequences.…”