Efficient binary sequence set designs for MIMO PMCW radar

Yutao Chen

doi:10.1016/j.sigpro.2023.109204

Efficient binary sequence set designs for MIMO PMCW radar

2023-12-01

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DOI：10.1016/j.sigpro.2023.109204

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Multiple-input multiple-output (MIMO) phase-modulated continuous wave (PMCW) radar systems have ma-jor advantages for mutual-interference mitigation over their linear frequency-modulated continuous wave (LFMCW) counterparts. To attain a virtual array length of M x M with M transmit and M receive antennas, a probing sequence set with both low auto-correlation sidelobes and low cross-correlations is needed for MIMO PMCW radar. To reduce the hardware cost of sequence generation, bina r y probing sequence (BPS) sets are desirable. We present herein fou r efficient computational algorithms to generate BPS sets with desirable properties, and arbitrary sequence lengths and arbitra r y number of sequences in the set are allowed. When initialized by random BPS sets, they can be used to obtain many different BPS sets with similar properties, i.e., with large diversity. Moreover, fast Fourier transform (FFT) are exploited, making the algorithms computationally efficient. They can be used to design long BPS sets that are hardly possible using existing methods in the literature. The convergence properties and the relationships among the proposed algorithms are also analyzed under a unified framework. Numerical examples are included to illustrate the effectiveness of our designs.

Keywords:

Binary probing sequence (BPS) sets

Correlation property

Fast Fourier transform (FFT )

Integrated sidelobe level (ISL)

Low correlation zone (LCZ)

Multiple-input multiple-output (MIMO) radar

Phase-modulated continuous wave (PMCW)

radar

Wavefo r m design

Efficient binary sequence set designs for MIMO PMCW radar

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