In this paper

a novel energy-efficiency sampling-precision-switching-based idle listening scheme is proposed for millimeter-wave wireless communications to achieve the target that the power consumption of idle listening is irrelevant to that of the energy-consuming analog-to-digital converter (ADC) required by the demodulation of receiver. To be more specific

in the idle listening phase

the receiver enables ultra-low power 1-bit ADC as well as the proposed 1-bit-sampling-precision generalized likelihood ratio test (GLRT) detector to capture the arrival of data packet; once capturing it successfully

the receiver switches to an original high-precision ADC and demodulate this packet

which maintains the demodulation performance. Meanwhile

the false-alarm probability (FAP) and miss-detection probability (MDP) expressions of the packet detector of the proposed scheme are derived and subsequently validated. Simulation results show that the proposed scheme can significantly reduce the power consumption of idle listening and obtains the effective packet-detection performance

compared with the existing schemes.