Doppler effect in VANET technology on high user's mobility

As part of intelligent transport system (ITS) technology, vehicular ad hoc network (VANET) offers convenience coordination between moving vehicles. A moving vehicle could be move at a very high speed, producing the Doppler Effect that damages OFDM symbols and also causes inter-carrier interference (ICI). Also, the scatterer along the vehicle generates many delays in vehicle to vehicle or vehicle to infrastructure communication system. This paper discussed VANET technology in comparison with 802.11a technology as they have many differences in adapting to user's mobility. The Doppler effect resulted from user's mobility with high speed was investigated as the main parameter in this paper to deliver a better solution in subsequent research. The results of this preliminary study were the Doppler shift, multipath delay, orthogonality parameter in OFDM, power spectral density of VANET and the influence of multipath delay in power spectral density. These preliminary results could be used as a reference in the implementation of future research to resolve the Doppler effect.

[1]  Rainer Baumann,et al.  Vehicular ad hoc networks (VANET) , 2004 .

[2]  Mark A. Wickert,et al.  Channel Estimation and Mitigation Techniques for OFDM in a Doppler Spread Channel , 2008, IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference.

[3]  Nima Alam,et al.  A DSRC Doppler-Based Cooperative Positioning Enhancement for Vehicular Networks With GPS Availability , 2011, IEEE Transactions on Vehicular Technology.

[4]  G. Hendrantoro,et al.  Doppler spread estimation for OFDM systems using Phase Difference method in Rayleigh fading channels , 2012, 2012 7th International Conference on Telecommunication Systems, Services, and Applications (TSSA).

[5]  Karim Djouani,et al.  An MCS Adaptation Technique for Doppler Effect in IEEE 802.11p Vehicular Networks , 2013, ANT/SEIT.

[6]  Karim Djouani,et al.  Performance and Comparative Analysis of ADSA in a Vehicular Network: MAC Approach in IEEE 802.11p , 2014, ANT/SEIT.

[7]  Wu Lenan,et al.  The Physical Layer of the IEEE 802.11p WAVE Communication Standard: The Specifications and Challenges , 2014 .

[8]  Karim Djouani,et al.  Doppler Effect Analysis and Modulation Code Derivation , 2012, ANT/MobiWIS.

[9]  Karim Djouani,et al.  Doppler Shift Signature for a MCSs Selection in a VANET , 2014, Smart Comput. Rev..

[10]  Sherali Zeadally,et al.  Vehicular ad hoc networks (VANETS): status, results, and challenges , 2010, Telecommunication Systems.

[11]  Karim Djouani,et al.  Doppler Shift Mitigation in a VANET using an IDDM approach , 2016, J. Ambient Intell. Humaniz. Comput..

[12]  E. A. Feukeu,et al.  Compensating the effect of Doppler shift in a vehicular network , 2013, 2013 Africon.

[13]  Gamantyo Hendrantoro,et al.  ICI mitigation with CFO compensation for OFDM in mobile-to-mobile channel , 2011, ICTC 2011.

[14]  Yskandar Hamam,et al.  Doppler Shift Compensation Schemes in VANETs , 2015, Mob. Inf. Syst..