Doppler Shift Extraction from QPSK Mapped OFDM Signal Constellation

Kh. Tovmasyan

Doppler Shift Extraction from QPSK Mapped OFDM Signal Constellation

Kh. Tovmasyan * §

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§ Institute of Radiophysics & Electronics of NAS of Ar...

Doppler Shift Extraction from QPSK Mapped OFDM Signal Constellation

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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.

References

8 Cites in Article

Reference Format

Kh,Tovmasyan OFDM signal constellation processing on Radar applications.
R Ali,T Khanzada,A Omar Frequency Offset Compensation for OFDM Systems Using a Combined Autocorrelation and Wiener Filtering Scheme.
N Vinay,K Sanjeev,Sh,S Sandeep,Arun Sh,S &tanuja Equalization of Doppler Effect Using Constellation Diagram of 8-PSK Modulation.
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C Yoke Leen Sit,T Sturm,Zwick (2011). Doppler Estimation in an OFDM Joint Radar and Communication System.
Satyabrata Sen,Arye Nehorai (2011). Adaptive OFDM Radar for Target Detection in Multipath Scenarios.
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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Kh. Tovmasyan. 2014. "Doppler Shift Extraction from QPSK Mapped OFDM Signal Constellation". Global Journal of Science Frontier Research - A: Physics & Space Science GJSFR-A Volume 14 (GJSFR Volume 14 Issue A1).

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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

Keywords

Constellation doppler shift OFDM QPSK RADAR signal processing target

Classification

GJSFR-A Classification FOR Code: 090609

Submission ReceivedMarch 27, 2014
Peer Review Double Blind
Handling Editor
Accepted April 18, 2014
Published April 30, 2014

Version of record

v1.2

Issue date

April 29, 2014

Language

English

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Article Matrices

Total Score: 147

Country: Armenia

Subject: Global Journal of Science Frontier Research

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

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Publish Date: 2014 04, Wed

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Total Downloads: 96

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