of the final product and is likely defined by FCC or other regulatory limitations. ACLR targets are a boundary set by 3GPP and other regulatory limitations on the ratio between the transmitted power on the intended channel and the unintentionally transmitted power in adjacent channels. We discuss ACLR more in-depth in discussions on DPD. Power efficiency is important as for all besides indoor deployments, RU power consumption is likely dominated by Power Amplifier PA efficiency, given that power amplifiers are typically consuming the highest amount of physical power in the system. In outdoor deployments, passive cooling is often a system requirement to be able to adhere to environmental (ingress protection against dust/water) and noise limitations. Given their proximity in a massive MIMO system, achieving channel isolation across the many antennas is a key performance metric. Channel isolation is a metric to indicate interference from one signal path onto another one-transmitter to transmitter, transmitter to receiver or between two receivers. Channel isolation maps to system level MIMO performance characteristics. Receiver sensitivity needs to be enough for the system to be capable of decoding the weakest UE signals. Minimum requirements are set by 3GPP. The biggest challenge in adhering to the requirements is keeping the amount of noise in the system lowest possible and hence picking components with the best possible Noise Figure (NF). Receiver dynamic range is related to receiver sensitivity. The system needs to be capable of receiving both the weakest signals associated with a far away user in bad conditions (sensitivity and low extreme for dynamic range) as with strong signals from a nearby user in good conditions (high extreme for dynamic range). The receiver chain (LNA/LNAs, AGC, ADC) needs to accommodate the maximum spread between these two values. The NF of a component/system is a measure of degradation of the signal as it is processed, and an indication of the quality of the product. Its value (in decib