DL: N/A XXxxxX B28 UL band xXXXXX UL/DL 2300-2400 UL:703-748 5G BW extension DL: N/A B1UL band UL/DL 2496-2690 UL: 1920-1980 XXXXX 5G BW extension DL: N/A B66 UL band UL/DL 1432-1517 UL: 1710-1780 DL: N/A NOTE 1:Four Rx antenna ports shall be the baseline for this operating band except for two Rx vehicular UE. Figure 12.10 Release-15 5G bands for FR1. White: LTE refarmed bands, light gray: 5G BW extension, dark-gray: 5G dedicated bands. (Note 1: Four Rx antenna ports shall be the baseline for this operating band except for two Rx vehicular UEs. Note 2:90 MHz channel bandwidth is optional for Release 15.) Band n8 Tx band Rx band f (MHz) B8 TX Wanted RBs TX carrier LO leakage at PA output C-IM3 "bump" RB image to LNA B8 RX Transmit band Receive band C-IM3 product TX chain excess noise in Rx band IM5 product Uplink Downlink carrier carrier FREQUENCY (MHz) 835 845 855 865 875 885 895 905 915 925 935 945 955 frequency 45 MHz Frequency [MHz] at 22 900 MHz Power amplifier input Power amplifier output 20 MHz Cell Bandwidth Figure 12.11 Measurement example of PA Tx excess noise falling in receive Band n8 for NR operation at 20 MHz Cell BW and 25RB allocated closest to the downlink band. 12.3 5G Standalone Performance Aspects in Frequency Range 1 12.3.4 Transmitter Chain Aspects 12.3.4.1 Maximum Power Reduction and Inner/Outer Allocation Concept The maximum output power reduction (MPR) concept is adopted in 3GPP to enable the usage of optimized power amplifiers that are dimensioned to deliver the best effi- ciency at the maximum output power. This is achieved by allowing the UE to transmit signals which are more challenging in terms of PA linearity and power consumption with a lower output power than a certain reference signal, which is a DFT-s-OFDM QPSK-modulated inner allocation waveform. This reference signal defines the 0 dB MPR point, which means that the UE shall meet all the necessary unwanted emission require- ments such as ACLR and spectrum emissions mask with nominal output power accord- ing to UE power class. In