Effect of Power Boosting Primary Synchronization Signal on Physical Layer Cell ID Detection in NR Downlink

This paper presents the effect of power boosting the primary synchronization signal (PSS) on the physical layer cell ID (PCID) detection probability using a synchronization signal block in the presence of carrier frequency offset (CFO) in the 3rd Generation Partnership Project (3GPP) New Radio (NR) specifications for millimeter-wave bands. Computer simulation results show that the PSS detection probability when increasing the transmit power of the PSS by boosting the power per resource element (RE) of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\Delta P_{Tx}^{PSS}=3\ \text{dB}$</tex> and 5 dB is increased by approximately 35% and 50%, respectively, compared to that with the equal energy per RE (EPRE) level at the average received signal-to-noise ratio (SNR) of −10 dB. Moreover, we show that the PCID detection probability with <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\Delta P_{Tx}^{PSS}=3\ \text{dB}$</tex> and 5 dB is increased by approximately 24% and 32%, respectively, compared to that with equal EPRE at the average received SNR of −10 dB. We also propose an update estimation of the CFO for the PCID detection. We show that the PCID detection probability using the update estimation of the CFO is improved further by approximately 5% and 8% compared to that using the conventional CFO estimation method with <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\Delta P_{Tx}^{PSS}=3\ \text{dB}$</tex> and 5 dB, respectively, at the same average received SNR.