Performance of Physical Cell ID Detection Probability Considering Frequency Offset for NR Radio Interface

Abstract

This paper presents the physical-layer cell identity (PCID) detection probability considering frequency offset for 5th generation (5G) new radio (NR). We compare the primary synchronization signal (PSS) and PCID detection probabilities of three PSS detection methods: cross-correlation based detection before frequency offset (FO) estimation and compensation, that after FO estimation and compensation, and autocorrelation based detection at a set of user equipment. Link- level simulation results show that the cross- correlation based PSS detection before the FO estimation and compensation achieves the highest PSS and PCID detection probabilities in the carrier frequency fc region lower than approximately 14 GHz at the average received signal-to-noise power ratio of 0 dB for the standard oscillator frequency error of 1 ppm. The cross-correlation based PSS detection after the FO estimation and compensation achieves much higher PSS and PCID detection probabilities than that before the FO estimation and compensation for the fc region higher than approximately 14 GHz. The PCID detection probability of the cross-correlation based PSS detection after the FO estimation and compensation is close to that of the autocorrelation based PSS detection according to the increase in the fc value. Therefore, we conclude that by switching the cross- correlation based PSS detection methods before and after the FO estimation and compensation, the PSS and secondary synchronization signal structures based on the NR radio interface achieve a high PCID detection probability for the fc value up to 60 GHz.