Iudice, Ivan (2017) Equalization of CPM signals over doubly-selective aeronautical channels. [Tesi di dottorato]

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Item Type: Tesi di dottorato
Lingua: English
Title: Equalization of CPM signals over doubly-selective aeronautical channels
Creators:
CreatorsEmail
Iudice, Ivani.iudice@cira.it
Date: 10 April 2017
Number of Pages: 101
Institution: Università degli Studi di Napoli Federico II
Department: Ingegneria Elettrica e delle Tecnologie dell'Informazione
Dottorato: Information technology and electrical engineering
Ciclo di dottorato: 29
Coordinatore del Corso di dottorato:
nomeemail
Daniele, Ricciodaniele.riccio@unina.it
Tutor:
nomeemail
Gelli, GiacintoUNSPECIFIED
Date: 10 April 2017
Number of Pages: 101
Uncontrolled Keywords: aeronautical telemetry, continuous phase modulation, CPM, linear time varying, LTV, widely-linear time varying, WLTV, equalization, basis expansion model, BEM, frequency-shift, FRESH, doubly-selective channels, Laurent representation, pseudo-symbols
Settori scientifico-disciplinari del MIUR: Area 09 - Ingegneria industriale e dell'informazione > ING-INF/03 - Telecomunicazioni
Date Deposited: 09 May 2017 15:33
Last Modified: 08 Mar 2018 13:31
URI: http://www.fedoa.unina.it/id/eprint/11736
DOI: 10.6093/UNINA/FEDOA/11736

Abstract

Communication technologies have always been one of the fundamental milestones of the aeronautical environment. Despite the growing demand for high performances, the aviation context is reluctant to move towards new technologies. Common communication strategies are not suitable to transmit at very high data rates over time- and/or frequency-dispersive (i.e., doubly-selective) air-ground channels, therefore, new requirements have to be fulfilled by an incremental approach, that is, by updating some parts of the legacy systems. This thesis deals with receiver synthesis for aeronautical communication data-links employing continuous-phase modulated (CPM) signals over doubly-selective wireless communication channels. The goal is to design efficient and low-complexity time-varying equalizers, by exploiting all of the CPM signal features, in order to compensate for the effects due to the rapidly time-varying aeronautical channels. The application of the basis expansion model (BEM) to a typical aeronautical communication channel is considered and validated by computer simulations. The second-order statistical characterization of the pseudo-symbols arising from Laurent representation of CPM signals is introduced and discussed. Both linear time-varying (LTV) and widely-linear time-varying (WLTV) zero forcing (ZF) and minimum mean square error (MMSE) receiver structures for CPM signals operating over doubly-selective channels are proposed and implemented by using the BEM model for the channel. Monte Carlo simulation results, carried out in typical aeronautical scenarios, show that the proposed approaches are able to work satisfactorily also over rapidly time-varying channels.

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