Analysis of In-vehicle Power Line Channel Response

Author

Vallejo-Mora, A.B. ; Sánchez-Martínez, J.J. ; Cañete, F.J. ; Cortés, J.A. ; Díez, L.

Author_Institution

Univ. de Malaga, Malaga, Spain

Volume

9

Issue

4

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

445

Lastpage

450

Abstract

Power Line Communications (PLC) technology in automobiles consists in using the power lines inside the vehicle as an information transmission medium. When the engine of a car is in operation, the alternator is the element that supplies the electric energy. The periodic movement of the rotor inside the alternator causes frequency of the generated AC signal and the impedance of the alternator to depend on the regime of the engine. This time variation of the impedance may lead to a periodically time-varying behavior of the channel response. The objective of this paper is to evaluate the magnitude of these periodical variations and to determine whether a linear time-invariant (LTI) channel model suffices or a linear periodically time-varying (LPTV) one is needed. The analysis has been accomplished on a set of measurements carried out at different access points inside a vehicle.

Keywords

alternators; automobiles; carrier transmission on power lines; internal combustion engines; rotors; AC signal generation; alternator impedance; automobiles; car; electric energy; engine; in-vehicle power line channel response; information transmission medium; linear periodically time-varying; linear time-invariant channel model; power line communication technology; rotor; Alternators; Irrigation; Local area networks; Power line communications; Rotors; Silicon compounds; Vehicles; Channel response; linear time-invariant (LTI); periodically time-varying ( LPTV); power line communication (PLC); vehicle;

fLanguage

English

Journal_Title

Latin America Transactions, IEEE (Revista IEEE America Latina)

Publisher

ieee

ISSN

1548-0992

Type

jour

DOI

10.1109/TLA.2011.5993726

Filename

5993726