TY - JOUR
T1 - Transmit design and DOA estimation for wideband MIMO system with colocated nested arrays
AU - Mao, Linlin
AU - Li, Hongbin
AU - Zhang, Qunfei
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/11
Y1 - 2018/11
N2 - We consider transmit design and direction-of-arrival (DOA) estimation for a wideband multiple-input multiple-output (MIMO) system equipped with a colocated nested array for both transmit and receive. We present a new transmit scheme which separates the transmitted waveforms in the frequency domain, and allows us to form a sum coarray in the wideband case. Based on the proposed scheme, two coherent DOA estimation methods which construct focusing matrices from the difference coarray of the MIMO virtual array are presented to take full advantage of the degrees of freedom (DOF) and improve the accuracy of DOA estimation. Simulation results illustrate that the proposed system exhibits better performance than several competing configurations.
AB - We consider transmit design and direction-of-arrival (DOA) estimation for a wideband multiple-input multiple-output (MIMO) system equipped with a colocated nested array for both transmit and receive. We present a new transmit scheme which separates the transmitted waveforms in the frequency domain, and allows us to form a sum coarray in the wideband case. Based on the proposed scheme, two coherent DOA estimation methods which construct focusing matrices from the difference coarray of the MIMO virtual array are presented to take full advantage of the degrees of freedom (DOF) and improve the accuracy of DOA estimation. Simulation results illustrate that the proposed system exhibits better performance than several competing configurations.
KW - Degrees of freedom (DOF)
KW - Direction of arrival (DOA) estimation
KW - Nested array
KW - Transmit scheme
KW - Wideband multiple-input multiple-output (MIMO) system
UR - http://www.scopus.com/inward/record.url?scp=85047639097&partnerID=8YFLogxK
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U2 - 10.1016/j.sigpro.2018.05.014
DO - 10.1016/j.sigpro.2018.05.014
M3 - Article
AN - SCOPUS:85047639097
SN - 0165-1684
VL - 152
SP - 63
EP - 68
JO - Signal Processing
JF - Signal Processing
ER -