Reduction of Sidelobe Levels in OFDM Radar Signal Using Two Samples Sliding Window Adder (TSSWA) Algorithm

Abstract

This paper aims to reduce the sidelobe levels of a Multicarrier Complementary Phase Coded (MCPC) radar signal. MCPC radar signal takes advantage of the properties of orthogonal frequency division multiplexing (OFDM). A MCPC signal is obtained by phase modulating the N subcarriers and every subcarrier are spaced apart by 1/tb duration, which forms an OFDM signal. The detection range for given radar is independent of the waveform which led to the implementation of MCPC signal using orthogonal transforms. The sidelobe level and Peak to Mean Envelope Power Ratio (PMEPR) are the problems which should be addressed to improve the performance of radar. Simulation result shows, the proposed method called Two Samples Sliding Window Adder (TSSWA) algorithm results in lower sidelobe levels.