Dynamic-range reduction of complex-valued baseband signals

摘要

To reduce the peak-to-average power ratio (PAPR) of a complex-valued digital baseband signal, the signal is mixed to an intermediate frequency and its real components extracted, to generate an intermediate-frequency real-valued digital signal. The intermediate frequency is one-quarter of a sampling rate of the complex-valued digital baseband signal. The intermediate-frequency real-valued digital signal is clipped and down-converted by one-quarter of the sampling rate.

主权项

1. A method of reducing a peak-to-average power ratio (PAPR) of a signal, the method comprising:
mixing a first complex-valued digital baseband signal to an intermediate frequency and extracting real components to generate an intermediate-frequency real-valued digital signal, wherein the intermediate frequency is one-quarter of a sampling rate of the first complex-valued digital baseband signal; clipping the intermediate-frequency real-valued digital signal, to generate a clipped intermediate-frequency digital signal; and down-converting the clipped intermediate-frequency digital signal by one-quarter of the sampling rate.