5G benefits to consumers and enterprises include higher data throughputs, lower latency, and increased network reliability. On the radio side, this is enabled by use of wider RF bandwidths—beyond 100 MHz—in the sub-6 GHz bands (like the popular C-bands), as well as higher-order modulation schemes (256 QAM). Both factors, when combined with stringent 3GPP-defined RF spectral compliance requirements, put pressure on RF designers for system-level optimization.
Looking at RF requirements for FR1 (<6 GHz) base stations, we can consider two ways to define the system.
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