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Multi-tone Signal O...
Multi-tone Signal Optimization for Wireless Power Transfer in the Presence of Wireless Communication Links
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- A. Mouris, Boules (författare)
- KTH,Teknisk informationsvetenskap
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- Ghauch, Hadi, 1986- (författare)
- Department of COMELEC, Institut Mines-Telecom, Telecom-ParisTech, Paris, 91120, France
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- Thobaben, Ragnar (författare)
- KTH,Teknisk informationsvetenskap
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- Jonsson, B. Lars G. (författare)
- KTH,Elektroteknisk teori och konstruktion
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(creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2020
- 2020
- Engelska.
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Ingår i: IEEE Transactions on Wireless Communications. - : Institute of Electrical and Electronics Engineers (IEEE). - 1536-1276 .- 1558-2248. ; 19:5, s. 3575-3590
- Relaterad länk:
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https://ieeexplore.i...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- In this paper, we study optimization of multi-tone signals for wireless power transfer (WPT) systems. We investigate different non-linear energy harvesting models. Two of them are adopted to optimize the multi-tone signal according to the channel state information available at the transmitter. We show that a second-order polynomial curve-fitting model can be utilized to optimize the multi-tone signal for any RF energy harvester design. We consider both single-antenna and multi-antenna WPT systems. In-band co-existing communication links are also considered in this work by imposing a constraint on the received power at the nearby information receiver to prevent its RF front end from saturation. We emphasize the importance of imposing such constraint by explaining how inter-modulation products, due to saturation, can cause high interference at the information receiver in the case of multi-tone signals. The multi-tone optimization problem is formulated as a non-convex linearly constrained quadratic program. Two globally optimal solution approaches using mixed-integer linear programming and finite branch-and-bound techniques are proposed to solve the problem. The achieved improvement resulting from applying both solution methods to the multi-tone optimization problem is highlighted through simulations and comparisons with other solutions existing in the literature.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
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