Spectral efficient optimization in OFDM systems with wireless information and power transfer
Ng DWK, Schober R (2013)
Publication Type: Conference contribution
Publication year: 2013
Publisher: European Signal Processing Conference, EUSIPCO
Conference Proceedings Title: European Signal Processing Conference
Event location: Marrakech
ISBN: 9780992862602
Abstract
This paper considers an orthogonal frequency division multiplexing (OFDM) point-to-point wireless communication system with simultaneous wireless information and power transfer. We study a receiver which is able to harvest energy from the desired signal, noise, and interference. In particular, we consider a power splitting receiver which dynamically splits the received power into two power streams for information decoding and energy harvesting. We design power allocation algorithms maximizing the spectral efficiency (bit/s/Hz) of data transmission. In particular, the algorithm design is formulated as a nonconvex optimization problem which takes into account the constraint on the minimum power delivered to the receiver. The problem is solved by using convex optimization techniques and a one-dimensional search. The optimal power allocation algorithm serves as a system benchmark scheme due to its high complexity. To strike a balance between system performance and computational complexity, we also propose two suboptimal algorithms which require a low computational complexity. Simulation results demonstrate the excellent performance of the proposed suboptimal algorithms. © 2013 EURASIP.
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How to cite
APA:
Ng, D.W.K., & Schober, R. (2013). Spectral efficient optimization in OFDM systems with wireless information and power transfer. In European Signal Processing Conference. Marrakech, MA: European Signal Processing Conference, EUSIPCO.
MLA:
Ng, Derrick Wing Kwan, and Robert Schober. "Spectral efficient optimization in OFDM systems with wireless information and power transfer." Proceedings of the 2013 21st European Signal Processing Conference, EUSIPCO 2013, Marrakech European Signal Processing Conference, EUSIPCO, 2013.
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