An Improved Residual Frequency Synchronization Method for Wireless Communication System

This paper proposes an improved residual frequency offset (RFO) estimation method in the cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) based wireless communication system. The proposed method is based on the sidelink primary synchronization signal (S-PSS) sequences inserted into the sidelink synchronization signal/physical sidelink broadcast channel (S-SS/PSBCH) block used to estimate the synchronization error in the 5G NR sidelink system. The proposed RFO estimation method has a more improved estimation performance than the conventional method. The computer simulation is used to assess the performance of the proposed scheme and to make comparison with the conventional scheme.