DOPPLER ESTIMATION AND MITIGATION IN OFDM

Dr Vaibhav Bhushan Tyagi

DOPPLER ESTIMATION AND MITIGATION IN OFDM

May 2022

Vol-8, Issue-3

Paper ID: 17035

ISSN: 2395-4396

Downloads: 0

Abstract & Details

Research Area

Communication Engineering

Keywords

Hyperbolic chirp Doppler estimation preamble postamble autocorrelation

Abstract

Due to relative velocity of obstacles with respect to transmitter or receiver packet get compress or expend according to Vr relative velocity. This is Doppler disturbs orthogonality of sub carriers and must be estimated and mitigate at receiver. Since the Doppler encountered is frequency dependent, it is non-uniform for OFDM as it involves a range of frequencies [1]. A two-step approach to mitigating the frequency-dependent Doppler drifts due to fast-varying acoustic acoustic channels is adopted: Non-uniform Doppler compensation via re-sampling. This step converts a “wideband” problem into a “narrowband” problem. High-resolution uniform compensation on residual Doppler by modeling it as induced by carrier frequency offset (CFO)[2]. This step fine-tunes the CFO term corresponding to a “narrowband” model for best ICI reduction. MATLAB simulation for doppler estimation and its mitigation ushing hyperbolic chirp signal is presented in this paper.

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Author Information

#	Name	Institute / Affiliation
1	Dr Vaibhav Bhushan Tyagi	ISBAT University,Kampala, Uganda.

How to Cite

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APA Style

Tyagi, Dr Vaibhav Bhushan (2022). DOPPLER ESTIMATION AND MITIGATION IN OFDM. International Journal of Advance Research and Innovative Ideas In Education, 8(3), 2594-2601.

MLA Style

Tyagi, Dr Vaibhav Bhushan. "DOPPLER ESTIMATION AND MITIGATION IN OFDM." International Journal of Advance Research and Innovative Ideas In Education, vol. 8, no. 3, 2022, pp. 2594-2601.

IEEE Style

Dr Vaibhav Bhushan Tyagi, "DOPPLER ESTIMATION AND MITIGATION IN OFDM," International Journal of Advance Research and Innovative Ideas In Education, vol. 8, no. 3, pp. 2594-2601, 2022.

Vancouver Style

Tyagi Dr Vaibhav Bhushan. DOPPLER ESTIMATION AND MITIGATION IN OFDM. International Journal of Advance Research and Innovative Ideas In Education. 2022;8(3):2594-2601.

Harvard Style

Tyagi, Dr Vaibhav Bhushan (2022) 'DOPPLER ESTIMATION AND MITIGATION IN OFDM', International Journal of Advance Research and Innovative Ideas In Education, 8(3), pp. 2594-2601.

Chicago Style

Tyagi, Dr Vaibhav Bhushan. "DOPPLER ESTIMATION AND MITIGATION IN OFDM." International Journal of Advance Research and Innovative Ideas In Education 8, no. 3 (2022): 2594-2601.

Turabian Style

Tyagi, Dr Vaibhav Bhushan. "DOPPLER ESTIMATION AND MITIGATION IN OFDM." International Journal of Advance Research and Innovative Ideas In Education 8, no. 3 (2022): 2594-2601.