Before revision: To meet the increasing requirements for wireless communications, unlicensed access is being accepted as one of the most significant solutions to improve resource availability and system scalability in 5G NR, which is called NR-based Access to Unlicensed Spectrum (NR-U) . As an OFDM system, 5G will face the problem of high Cubic Metric (CM).
After revision: In NR-based Access to Unlicensed Spectrum (NR-U) . As an OFDM system, 5G will face the problem of high Cubic Metric (CM).