NDLI: MIMO-radar waveform design for beampattern using particle-swarm-optimisation

Content Provider	IEEE Xplore Digital Library
Author	Ahmed, S. Thompson, J.S. Mulgrew, B.
Copyright Year	2012
Description	Author affiliation: King Abdullah University of Science and Technology, Thuwal, Makkah Province, Saudi Arabia (Ahmed, S.) \|\| Institute for Digital Communications, School of Engineering, University of Edinburgh, EH8 3JL, UK (Thompson, J.S.; Mulgrew, B.)
Abstract	Multiple input multiple output (MIMO) radars have many advantages over their phased-array counterparts: improved spatial resolution; better parametric identifiably and greater flexibility to acheive the desired transmit beampattern. The desired transmit beampatterns using MIMO-radar requires the waveforms to have arbitrary auto- and cross-correlations. To design such waveforms, generally a waveform covariance matrix, R, is synthesised first then the actual waveforms are designed. Synthesis of the covariance matrix, R, is a constrained optimisation problem, which requires R to be positive semidefinite and all of its diagonal elements to be equal. To simplify the first constraint the covariance matrix is synthesised indirectly from its square-root matrix U, while for the second constraint the elements of the m-th column of U are parameterised using the coordinates of the m-hypersphere. This implicitly fulfils both of the constraints and enables us to write the cost-function in closed form. Then the cost-function is optimised using a simple particle-swarm-optimisation (PSO) technique, which requires only the cost-function and can optimise any choice of norm cost-function.
Starting Page	6381
Ending Page	6385
File Size	208604
Page Count	5
File Format	PDF
ISBN	9781457720529
ISSN	15503607
e-ISBN	9781457720536
e-ISBN	9781457720512
DOI	10.1109/ICC.2012.6364672
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-10
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Covariance matrix Algorithm design and analysis Vectors MIMO radar Optimization Transmitting antennas particle-swarm-optimisation colocated antennas beampattern design
Content Type	Text
Resource Type	Article

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