Dual-Function MIMO Radar Communications System Design Via Sparse Array Optimization

Spectrum congestion and competition over frequency bandwidth could be alleviated by deploying dual-function radar-communications systems, where the radar platform presents itself as a system of opportunity to secondary communication functions. In this paper, we propose a new technique for communicat...

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Veröffentlicht in:IEEE transactions on aerospace and electronic systems 2019-06, Vol.55 (3), p.1213-1226
Hauptverfasser: Wang, Xiangrong, Hassanien, Aboulnasr, Amin, Moeness G.
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creator Wang, Xiangrong
Hassanien, Aboulnasr
Amin, Moeness G.
description Spectrum congestion and competition over frequency bandwidth could be alleviated by deploying dual-function radar-communications systems, where the radar platform presents itself as a system of opportunity to secondary communication functions. In this paper, we propose a new technique for communication information embedding into the emission of multiple-input multiple-output (MIMO) radar using sparse antenna array configurations. The phases induced by antenna displacements in a sensor array are unique, which makes array configuration feasible for symbol embedding. We also exploit the fact that in a MIMO radar system, the association of independent waveforms with the transmit antennas can change over different pulse repetition periods without impacting the radar functionality. We show that by reconfiguring sparse transmit array through antenna selection and reordering waveform-antenna pairing, a data rate of megabits per second can be achieved for a moderate number of transmit antennas. To counteract practical implementation issues, we propose a regularized antenna-selection-based signaling scheme. The possible data rate is analyzed and the symbol/bit error rates are derived. Simulation examples are provided for performance evaluations and to demonstrate the effectiveness of proposed dual-function radar-communication techniques.
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subjects Antenna arrays
Antenna permutation
antenna selection
Antennas
Bandwidths
Bit error rate
Communication
Communications systems
Configurations
Design optimization
dual-function radar-communications (DFRC)
Embedding
Error analysis
MIMO (control systems)
MIMO radar
multiple-input multiple-output (MIMO) radar
Radar antennas
Radar arrays
Radar equipment
Receivers
Sensor arrays
spectrum sharing
Systems design
Transmitting antennas
Waveforms
title Dual-Function MIMO Radar Communications System Design Via Sparse Array Optimization
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