Pulse-shaped offset QAM in discrete-time

Abstract

Contrary to multicarrier modulation (MCM), single carrier (SC) can provide low peak to average power ratios (PAPRs). Thus, they have been proposed for various mobile systems, e.g. for the GSM and for the 3GPP-LTE. In this paper, we use the link with a MCM system to introduce a SC transceiver based on the Offset Quadrature Amplitude Modulation (OQAM). We show that, for certain systems, OQAM can provide simultaneously orthogonality and phase linearity properties that cannot be reached by conventional QAM schemes. Furthermore, we get improvements with respect to the power ratio (PR).