Energy Efficiency Optimization in Radar-Communication Spectrum Sharing
| Autor: | Emanuele Grossi, Luca Venturino, Marco Lops |
|---|---|
| Přispěvatelé: | Grossi, Emanuele, Lops, Marco, Venturino, Luca |
| Rok vydání: | 2021 |
| Předmět: |
Signal Processing (eess.SP)
FOS: Computer and information sciences Optimization problem joint system design Computer science Computer Science - Information Theory MIMO communications Spectral coexistence Context (language use) Communications system law.invention law Electronic engineering FOS: Electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Radar Electrical Engineering and Systems Science - Signal Processing energy efficiency shared spectrum access for radar and communications (SSPARC) Information Theory (cs.IT) Codebook green communications radar-communications convergence surveillance radars Signal Processing Clutter Secondary surveillance radar Efficient energy use |
| Popis: | Energy efficiency, possibly coupled with cognition-based and spectrum-sharing architectures, is a key enabling technology for green communications in 5G-and-beyond standards. In this context, the present paper considers a multiple-input multiple-output communication system cooperatively coexisting with a surveillance radar: the objective function is the communication system energy efficiency, while radar operation is safeguarded by constraining the minimum received signal-to-disturbance ratio for a set of range-azimuth cells of the controlled scene, and no time synchronization between them is assumed. The degrees of freedom are the transmit powers of both systems, the space-time communication codebook and the linear filters at the radar receiver. The resulting optimization problem is non-convex, due to both the objective function and the presence of signal-dependent interference (clutter): we develop a block-coordinate-ascent approximate solution, and offer a thorough performance assessment, so as to elicit the merits of the proposed approach, along with the interplay among the achievable energy efficiency, the density of scatterers in the environment, and the size of the set of protected radar cells. Accepted (with minor changes) in the IEEE Transactions on Signal Processing. arXiv admin note: text overlap with arXiv:1907.07943 |
| Databáze: | OpenAIRE |
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