The new digital standards adopted in Europe for broadcast communication systems use the Orthogonal Frequency Division Multiplexing (OFDM) technique [1][2] which is characterised by non constant envelope signals. This fact is in contrast with the employment of RF High Power Amplipers (HPAs) which are typically non linear and utilised with low Output Back Off (OBO) in order to maximise the power efficiency. The consequent generation of InterModulation Products (IMPs) is responsible for Bit Error Rate (BER) degradation and Adjacent Channel Interference (ACI). Aim of this work is to present the Itelco experience in this topics, outlining the DVB-T performance dependence from the OBO. Moreover the improvements achievable by AMIAM-AM/PM predistortion and by RF non-linear memory compensation will be analysed both by simulation and measurements.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.