Virtual Array Response Vector for Angle Estimation of MIMO Radar With a Wide-Band Interleaved OFDM Signal

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Direction of arrival (DOA) in MIMO radar is estimated from the phase differences between its channels. Hence, the phase difference vector, called a virtual array response vector, needs to be accurately known. We propose a new model of the virtual array response with a wide-band interleaved orthogonal frequency-division multiplexing (OFDM) signal. The angle is estimated by maximum likelihood estimation (MLE), and we show that the estimation error is lower than the one when using the systematic phase correction method which compensates for the range-dependent phase term. Also, the root mean square error (RMSE) of angle estimation with the proposed method is closer to the Cramer-Rao bound (CRB).
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2021-05
Language
English
Article Type
Article
Citation

IEEE COMMUNICATIONS LETTERS, v.25, no.5, pp.1539 - 1543

ISSN
1089-7798
DOI
10.1109/LCOMM.2021.3049355
URI
http://hdl.handle.net/10203/285589
Appears in Collection
EE-Journal Papers(저널논문)
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