Joint Doppler Estimation and Mitigation of Intercarrier Interference in Wireless Communication System

International Journal of Electronics and Communication Engineering

© 2016 by SSRG - IJECE Journal

Volume 3 Issue 6

Year of Publication : 2016

Authors : Tiby Verghis and Athira S Nair

10.14445/23488549/IJECE-V3I6P105

How to Cite?

Tiby Verghis and Athira S Nair, "Joint Doppler Estimation and Mitigation of Intercarrier Interference in Wireless Communication System," SSRG International Journal of Electronics and Communication Engineering, vol. 3,  no. 6, pp. 12-13, 2016. Crossref, https://doi.org/10.14445/23488549/IJECE-V3I6P105

Abstract:

In the presence of intercarrier interference (ICI), conventional orthogonal frequency-division multiplexing (OFDM) radar exhibits serious performance degradation when estimating the Doppler frequency of a target. In this letter, a two-step Doppler estimation scheme is proposed for OFDM radar. In order to mitigate ICI, a sequence with a good correlation property is assigned to the subcarriers to generate an OFDM signal, and oversampling is applied to the received OFDM signal in the frequency domain. Then, Doppler estimation with coarse and fine estimating steps is performed to achieve accurate Doppler estimation. Autocorrelation and mean value adoption is done for Doppler shift estimation. Pseudorandom padding is included. Finally, for ICI mitigation adaptive filter is used. The project deals with pseudorandom sequence for padding. Two tire Doppler estimation is done through autocorrelation and mean methods. Next is to mitigate intercarrier interference by using adaptive filters.

Keywords:

 Next is to mitigate intercarrier interference by using adaptive filters.

References:

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