Doppler Shift Mitigation in a VANET using an IDDM

Authors: E A Feukeu K Djouani A Kurien

Publish Date: 2016/03/03

Volume: 7, Issue: 3, Pages: 321-332

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Abstract

Vehicular Adhoc Networks VANET was created to facilitate and enable inter vehicular communication One of the most challenging problems affecting the feasibility of VANET is the problem of high mobility of the nodes resulting in an induced Doppler Shift DS in the carrier frequency at the receiver end The work presented in this paper proposes a solution to mitigate the effect of DS affecting the VANET environment Based on the Direct Derivation Method DDM derived from the principle of communication theory an Improved DDM IDDM concept analysis and design is developed and explored Several critical tests are performed and it was demonstrated that not only the IDDM response exhibits the BER threshold limit described by the IEEE 80211 standard the approach offers for the same SNR value a throughput improvement of up to 6666  and an improved BER response of more than 25  compared to the DDM and Constant Cte A performance analysis also demonstrated that not only IDDM performs faster it equally offers considerable improvement in term of efficiency over the DDM approach

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