MIMO Dual-Functional Radar-Communication Waveform Design With Peak Average Power Ratio Constraint

Zhao, Yujiu; Chen, Yiqin; Ritchie, Matthew; Su, Weimin; Gu, Hong

doi:10.1109/access.2020.3045083

Cited by 8 publications

(2 citation statements)

References 26 publications

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“…. , N t } and ∀l ∈ L to initialize all precoders [27]. The second method uses Zero-Forcing (ZF) precoders to initialize precoders for the private streams and the left-most eigenvector of the channel matrix to initialize precoders for the common stream.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…The sharing of RF spectrum and hardware resources by multiple systems has increased the importance of interference management among the communication users and radar targets in an energy-efficient manner. The works on precoder design with interference management for co-existing and co-located DFRC systems, such as [18], [26], [27], consider design metrics in terms of communications rate, Signal-to-Noise Power Ratio (SNR) or multi-user interference, without any discussions on hardware power consumption or EE.…”

Section: Introductionmentioning

confidence: 99%

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Energy Efficient Dual-Functional Radar-Communication: Rate-Splitting Multiple Access, Low-Resolution DACs, and RF Chain Selection

Dizdar

Kaushik

Clerckx

et al. 2022

IEEE Open J. Commun. Soc.

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Dual-Functional Radar-Communication systems enhance the benefits of communications and radar sensing by jointly implementing these on the same hardware platform and using the common RF resources. An important and latest concern to be addressed in designing such Dual-Functional Radar-Communication systems is maximizing the energy-efficiency. In this paper, we consider a Dual-Functional Radar-Communication system performing simultaneous multi-user communications and radar sensing, and investigate the energy-efficiency behaviour with respect to active transmission elements. Specifically, we formulate a problem to find the optimal precoders and the number of active RF chains for maximum energy-efficiency by taking into consideration the power consumption of low-resolution Digital-to-Analog Converters on each RF chain under communications and radar performance constraints. We consider Rate-Splitting Multiple Access to perform multi-user communications with perfect and imperfect Channel State Information at Transmitter. The formulated non-convex optimization problem is solved by means of a novel algorithm. We demonstrate by numerical results that Rate Splitting Multiple Access achieves an improved energy-efficiency by employing a smaller number of RF chains compared to Space Division Multiple Access, owing to its generalized structure and improved interference management capabilities.

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Section: Simulation Resultsmentioning

confidence: 99%