Physical layer cell ID detection performance using polarization receiver diversity for NR in 3GPP CDL channel models

This paper presents the physical layer cell identity (PCID) detection probability using polarization receiver diversity based on the primary synchronization signal (PSS) and secondary synchronization signal (SSS) of the New Radio (NR) interface for 3GPP Clustered Delay Line (CDL) channel models. We first validate the PCID detection probability in the CDL channel models with reference to those in the Tapped Delay Line (TDL) channel models that have the same power delay profile. Simulation results show that the loss in the required average received signal-to-noise power ratio (SNR) satisfying the PCID detection probability of 80% compared to that achieving the PSS detection probability of the same level due to the miss detection of the SSS sequence is only approximately 1.0 dB in the presence of a carrier frequency offset (CFO) in the CDL models. We also show that the PCID detection probability of 90% is achieved at the average received SNR of ${-}2.2\ \text{dB}, {-}5.6\ \text{dB}$, and ${-}13.5\ \text{dB}$ in the presence of a CFO with $\varepsilon=3\ \text{ppm}$ at the carrier frequency of 4 GHz in the CDL-A, C, and E channel models, respectively. Through extensive simulation results, we show that the structure and sequence of the PSS and SSS based on the NR specifications are effective in achieving a high PCID detection probability for the realistic CDL channel models, in which the channel response of each path is characterized by the average signal power, delay time, random phase, and incident path angles, in the presence of the CFO with $\varepsilon$ of up to 5 ppm at the carrier frequency of 4 GHz.