CDMA-MIMO Radar With the Tansec Waveform

• Published in: IEEE transactions on aerospace and electronic systems Vol. 57; no. 1; pp. 76 - 89
• Main Authors: Solodky, Gaston, Longman, Oren, Villeval, Shahar, Bilik, Igal
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.02.2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Automotive engineering; Automotive radar; Code Division Multiple Access; code division multiple access (CDMA) multiple-input multiple-output (MIMO) radar; Coding; Correlation; Cross correlation; Encoding; Frequency modulation; MIMO radar; Multiaccess communication; orthogonal waveforms; Properties (attributes); Radar; Sidelobes; tansec signal; Waveforms
• ISSN: 0018-9251; 1557-9603
• DOI: 10.1109/TAES.2020.3016876

This work addresses code division multiple access (CDMA) implementation of automotive multiple-input multiple-output (MIMO) radars. The tansec frequency modulation (TSFM) is proposed as a single intracoding scheme for CDMA-MIMO radars. The properties of the TSFM coding family are analyzed and two novel codeword selection algorithms are proposed. The TSFM is compared to a variety of coding families by evaluating their autocorrelation and cross-correlation properties. The considered coding families are based on phase coding: Hadamard, Gold, optimal peak to sidelobe; and frequency coding: piecewise linear frequency modulated. Properties of the coding families are analyzed with a variety of novel criteria, which are especially useful for CDMA-MIMO radars. The performance of the CDMA-MIMO radar with different coding families is evaluated via simulations of practical multitarget automotive scenarios. It is shown that the frequency-based TSFM coding family outperforms the other considered coding families in terms of their cross-correlation properties.