A signal output method performed by a signal output apparatus, the signal output apparatus including a virtual user equipment module, a channel simulation module, a signal grouping and conversion module and a radio frequency module, the method comprising: • generating, by a central processing unit of the virtual user equipment module, multiple UE baseband signals by using a software program and accelerating, by a digital signal processor, DSP, of the virtual user equipment module and/or by a field-programmable gate array, FPGA, of the virtual user equipment module, algorithms used by the central processing unit to perform said generating of the multiple UE baseband signals (step 401); • adding, by the channel simulation module, a radio frequency characteristic to each of the generated multiple UE baseband signals to obtain multiple UE characteristic signals (step 402); • generating, by the signal grouping and conversion module, N signal groups according to the obtained multiple UE characteristic signals, wherein each signal group comprises at least one of the multiple UE characteristic signals, and a UE characteristic signal set comprising the N signal groups is the same as a set comprising the obtained multiple UE characteristic signals; and combining, by the signal grouping and conversion module, UE characteristic signals comprised in each of the N signal groups, and respectively binding, by the signal grouping and conversion module, N combined signals obtained through combination to N radio frequency units of the radio frequency module (step 403), wherein a ratio of a sum of peak powers of the UE characteristic signals comprised in each signal group to a sum of average powers within a specified power identification duration is not greater than a specified peak-to-average power ratio PAPR threshold; and • respectively outputting, by the radio frequency module, by using antennas connected to the N radio frequency units, the N combined signals that are bound to the N radio frequency units (step 404). • generating, by a central processing unit of the virtual user equipment module, multiple UE baseband signals by using a software program and accelerating, by a digital signal processor, DSP, of the virtual user equipment module and/or by a field-programmable gate array, FPGA, of the virtual user equipment module, algorithms used by the central processing unit to perform said generating of the multiple UE baseband signals (step 401); • adding, by the channel simulation module, a radio frequency characteristic to each of the generated multiple UE baseband signals to obtain multiple UE characteristic signals (step 402); • generating, by the signal grouping and conversion module, N signal groups according to the obtained multiple UE characteristic signals, wherein each signal group comprises at least one of the multiple UE characteristic signals, and a UE characteristic signal set comprising the N signal groups is the same as a set comprising the obtained multiple UE characteristic signals; and combining, by the signal grouping and conversion module, UE characteristic signals comprised in each of the N signal groups, and respectively binding, by the signal grouping and conversion module, N combined signals obtained through combination to N radio frequency units of the radio frequency module (step 403), wherein a ratio of a sum of peak powers of the UE characteristic signals comprised in each signal group to a sum of average powers within a specified power identification duration is not greater than a specified peak-to-average power ratio PAPR threshold; and • respectively outputting, by the radio frequency module, by using antennas connected to the N radio frequency units, the N combined signals that are bound to the N radio frequency units (step 404).