A theoretical study of the statistical and spectral properties of polar transmitter signals

The polar transmitter is an increasingly interesting architecture for modern wireless communication devices. Several studies have been done investigating optimal hardware architectures with minimal power consumption and space. In this paper, we present a mathematical analysis of the signals in a polar transmitter. We study the statistical and spectral properties of the amplitude and phase of the baseband signal and their relationship to influencing parameters in the transmitter like modulation and pulse shaping. This knowledge helps us to better understand the potential and limitation of a polar transmitter and facilitates future research.