期刊
IEEE TRANSACTIONS ON SIGNAL PROCESSING
卷 66, 期 16, 页码 4264-4279出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSP.2018.2847648
关键词
Spectrum sharing; radar-communication; multi-user interference; non-convex optimization; global minimizer
资金
- Engineering and Physical Sciences Research Council [EP/M014150/1]
- China Scholarship Council
- National Natural Science Foundation of China [61771047]
- EPSRC [EP/M014150/1] Funding Source: UKRI
We focus on a dual-functional multi-input-multioutput (MIMO) radar-communication (RadCom) system, where a single transmitter with multiple antennas communicates with downlink cellular users and detects radar targets simultaneously. Several design criteria are considered for minimizing the downlink multiuser interference. First, we consider both omnidirectional and directional beampattern design problems, where the closed-form globally optimal solutions are obtained. Based on the derived waveforms, we further consider weighted optimizations targeting a flexible tradeoff between radar and communications performance and introduce low-complexity algorithms. Moreover, to address the more practical constant modulus waveform design problem, we propose a branch-and-hound algorithm that obtains a globally optimal solution, and derive its worst-case complexity as function of the maximum iteration number. Finally, we assess the effectiveness of the proposed waveform design approaches via numerical results.
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