Low computational complexity modulo sampler based on level crossing side information

Abstract

An apparatus (20) for sampling signals includes a modulo circuit (24), an Analog to Digital Converter (ADC—28) and processing circuitry (32). The modulo circuit is configured to receive an analog signal (40), and to derive from the analog signal (i) an analog folded signal (48) whose amplitude is limited to a predefined dynamic range, and (ii) side information (36) indicative of instances in which the analog signal transitions between levels corresponding to odd integer multiples of boundaries specifying the dynamic range. The ADC is configured to sample the analog folded signal to produce a digital folded signal (52). The processing circuitry is configured to generate a digital unfolded signal (44), which represents the analog signal both within and outside the dynamic range, based on the digital folded signal and on the side information, and to output the digital unfolded signal.

Dependencies are inferred from the claim text.