Doppler Shift Extraction from QPSK Mapped OFDM Signal Constellation

Doppler Shift Extraction from QPSK Mapped OFDM Signal Constellation

Article ID

SFR8STP0

, ,

Doppler Shift Extraction from QPSK Mapped OFDM Signal Constellation

A. Hakhoumian

Kh. Tovmasyan Institute of Radiophysics & Electronics of NAS of Armenia

E. Gabrielyan

DOI

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Abstract

Doppler effect gives a frequency offset on received OFDM signal in radar system. That offset can be seen as a distortion and rotation of reflected signals QPSK mapping vectors. It is possible to determine moving target velocity by estimating expected value of the distorted signal and then calculating the rotated angle. A mathematical relationship between Doppler frequency shift and rotated angle of QPSK mapping vectors was obtained. The recommended systems will require less computing resources, because Doppler frequency shift calculation could be done during one OFDM symbol.

Doppler Shift Extraction from QPSK Mapped OFDM Signal Constellation

Authors

A. Hakhoumian

Kh. Tovmasyan Institute of Radiophysics & Electronics of NAS of Armenia

E. Gabrielyan

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How to Cite

Kh. Tovmasyan. 2014. “. Global Journal of Science Frontier Research – A: Physics & Space Science GJSFR-A Volume 14 (GJSFR Volume 14 Issue A1): .

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

GJSFR Volume 14 Issue A1
Pg. 39- 42

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Submission Received March 27, 2014
Accepted April 18, 2014
Published April 30, 2014

Keywords

Constellation doppler shift OFDM QPSK RADAR signal processing target

Article Matrices

Total Score: 103

Country: Armenia

Subject: Global Journal of Science Frontier Research - A: Physics & Space Science

Authors: A. Hakhoumian, Kh. Tovmasyan, E. Gabrielyan (PhD/Dr. count: 0)

View Count (all-time): 119

Total Views (Real + Logic): 4445

Total Downloads (simulated): 2300

Publish Date: 2014 04, Tue

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Total Views: 4445

Total Downloads: 2300

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