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Power consumption is a key challenge in millimeter wave (mmWave) receiverfront-ends, due to the need to support high dimensional antenna arrays at widebandwidths. Recently, there has been considerable work in developing low-powerfront-ends, often based on low-resolution ADCs and low-power mixers. A criticalbut less studied consequence of such designs is the relatively low-dynamicrange which in turn exposes the receiver to adjacent carrier interference andblockers. This paper provides a general mathematical framework for analyzingthe performance of mmWave front-ends in the presence of out-of-bandinterference. The goal is to elucidate the fundamental trade-off of powerconsumption, interference tolerance and in-band performance. The analysis iscombined with detailed network simulations in cellular systems with multiplecarriers, as well as detailed circuit simulations of key components at 140 GHz.The analysis reveals critical bottlenecks for low-power interference robustnessand suggests designs enhancements for use in practical systems.

Understanding Energy Efficiency and Interference Tolerance in Millimeter Wave Receivers