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Dual-function radar-communication (DFRC) systems enable information embedding into the radar signal emission. Existing methods for non-coherent phase-modulation DFRC employ multiple pairs of orthogonal waveforms and embed one communication symbol into each pair. The total number of symbols is equal to one-half of the number of waveforms. In this paper, we propose a new signaling strategy for embedding...
In this paper, we develop a new technique for dual-function radar-communications in a transmit multi-sensor array where information embedding is achieved using phase-rotational invariance. A sequence of Q bits is first mapped into a dictionary of 2Q phase rotations. Then, one pair of transmit orthogonal waveforms is used in tandem with 2Q pairs of transmit beamforming weight vectors for embedding...
In this paper, we develop a new technique for dual-function radar-communications in a transmit multi-sensor array where information embedding is achieved using sidelobe control in tandem with waveform diversity. A set of Q orthogonal waveforms is exploited to embed a sequence of Q bits during each radar pulse. All waveforms are transmitted simultaneously where one bit is embedded in each waveform...
In this paper, we consider the design of an optimum beamforming and scheduling scheme at a multi-antenna UAV central node (UAV-C), which collects information from several other single-antenna distributed UAV nodes (UAV-D). When the channels between UAV-C and UAV-D are both perfectly known, the optimum strategy is to employ minimum mean-square-error (MMSE) beamforming in conjuction with a computationally...
In this paper, we propose a multi-frequency array structure that achieves accurate target localization in a multipath environment. The use of multi-frequencies enables decorrelation in the array to operate direction-of-arrival (DOA) estimation for coherent arrival paths, whereas the spatial filtering of the signals makes the paths separable for robust range estimation. Multi-frequency radar techniques...
The use of multi-beam antennas provides a wireless network node with the capability of concurrent communications with multiple nodes in different directions. Multi-beam antennas have been shown to improve network throughput as well as reliability. In this paper, we consider an array processing based framework in which channel collision is avoided for improved efficiency while interference to ongoing...
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