NOMA-Aided Joint Radar and Multicast-Unicast Communication Systems
Xidong Mu, Yuanwei Liu, Li Guo, Jiaru Lin, Lajos Hanzo

TL;DR
This paper introduces a NOMA-based joint radar and communication system that efficiently shares spectrum for radar detection and multicast-unicast data transmission, optimizing beamformers and power allocation.
Contribution
It proposes novel NOMA-aided frameworks for joint radar and communication systems, including algorithms for beamforming and power optimization for single and multiple user scenarios.
Findings
Achieves high unicast rate while satisfying multicast and radar accuracy requirements.
Develops efficient algorithms for joint beamforming and power allocation.
Extends the framework to multiple user pairs with optimized sum-rate performance.
Abstract
The novel concept of non-orthogonal multiple access (NOMA) aided joint radar and multicast-unicast communication (Rad-MU-Com) is investigated. Employing the same spectrum resource, a multi-input-multi-output (MIMO) dual-functional radar-communication (DFRC) base station detects the radar-centric users (R-user), while transmitting mixed multicast-unicast messages both to the R-user and to the communication-centric user (C-user). In particular, the multicast information is intended for both the R- and C-users, whereas the unicast information is only intended for the C-user. More explicitly, NOMA is employed to facilitate this double spectrum sharing, where the multicast and unicast signals are superimposed in the power domain and the superimposed communication signals are also exploited as radar probing waveforms. First, a beamformer-based NOMA-aided joint Rad-MU-Com framework is proposed…
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Taxonomy
TopicsRadar Systems and Signal Processing
