Phased-MIMO Radar: A Tradeoff Between Phased-Array and MIMO Radars

By Aboulnasr Hassanien, Sergiy A. Vorobyov. IEEE Transactions on Signal Processing, 2009

468 citations recorded by the source corpus.

We propose a new technique for multiple-input multiple-output (MIMO) radar with colocated antennas which we call phased-MIMO radar. The new technique enjoys the advantages of the MIMO radar without sacrificing the main advantage of the phased-array radar which is the coherent processing gain at the transmitting side. The essence of the proposed technique is to partition the transmit array into a number of subarrays that are allowed to overlap. Then, each subarray is used to coherently transmit a waveform which is orthogonal to the waveforms transmitted by other subarrays. Coherent processing gain can be achieved by designing a weight vector for each subarray to form a beam towards a certain direction in space. Moreover, the subarrays are combined jointly to form a MIMO radar resulting in higher angular resolution capabilities. Substantial improvements offered by the proposed phased-MIMO radar technique as compared to the phased-array and MIMO radar techniques are demonstrated analytically and by simulations through analyzing the corresponding beam patterns and the achievable output signal-to-noise-plus-interference ratios. Both analytical and simulation results validate the effectiveness of the proposed phased-MIMO radar.

Subfields: Aerospace Engineering

View Paper: https://www.semanticscholar.org/paper/ba073f707a0b9914a8926d03371efdf9a50c8a06

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In Aerospace Engineering

1. Fan Liu
2. Christos Masouros
3. Jie Xu
4. Yonina C. Eldar
5. Tony X. Han
6. Yuanhao Cui
7. Wen-qin Wang
8. Stefano Buzzi

Citations in the corpus

• Enabling Joint Communication and Radar Sensing in Mobile Networks—A Survey (2020, methodology): “One potential solution is to introduce the concept of antenna grouping and virtual subarrays [115], [142].”
• Transmit Subaperturing for Range and Angle Estimation in Frequency Diverse Array Radar (2014, methodology): “A phased-MIMO technique, which enjoys the advantages of the MIMO radar without sacrificing the main benefit of the phased-array radar in coherent processing gain, is proposed in [27], [28] for MIMO radar with colocated antennas.”
• Massive MIMO is a Reality - What is Next? Five Promising Research Directions for Antenna Arrays (2019, unknown): “Hybrid configurations are also possible [117]–[119].”
• Integrated Sensing and Communications: Toward Dual-Functional Wireless Networks for 6G and Beyond (2021, methodology): “By doing so, phased-MIMO radar achieves a flexible tradeoff between phased-array and MIMO radars [36].”
• A Survey on Fundamental Limits of Integrated Sensing and Communication (2021, methodology): “3) Phased-MIMO Radar: Phased-MIMO Radar was first proposed in [42] and it achieves a tradeoff between phasedarray radar (beamforming gain) and MIMO radar (waveform diversity gain).”
• Joint Radar and Communication Design: Applications, State-of-the-Art, and the Road Ahead (2019, methodology): “In fact, the HAD structure has already been exploited to design a type of novel radar system referred to as “phased-MIMO radar” [99], which is a compromise between the phased-array radar and the MIMO radar.”