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Conference Paper: Analog spatial decoupling for tackling the near-far problem in wirelessly powered communications

TitleAnalog spatial decoupling for tackling the near-far problem in wirelessly powered communications
Authors
Issue Date2016
PublisherIEEE. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000104
Citation
The 2016 IEEE International Conference on Communications (ICC 2016), Kuala Lumpur, Malaysia, 22-27 May 2016. In Conference Proceedings, 2016 How to Cite?
AbstractA practical architecture for wirelessly powered communications (WPC) with dedicated power beacons (PBs) deployed in existing cellular networks, called PB-assisted WPC, is considered in this paper. Assuming those PBs can access to backhaul network and perform simultaneous wireless information and power transfer (SWIPT) to the energy constrained users, the near-far problem in the PB-assisted WPC system is first identified. Specifically, the significant difference of the received power of SWIPT signal (from a PB) and information transfer (IT) signal (from a base station) due to different transmission ranges leads to extremely small signal-to-quantization-noise ratio (SQNR) for the IT signal after quantization of the mixed signals. To retrieve the information carried by the SWIPT and IT signals respectively, it is essential to decouple the strong SWIPT and the weak IT signals in analog domain. To this end, a novel technique called analog spatial decoupling using only simple components such as phase shifters and adders is proposed in this paper. In particular, for the single-PB case, the optimal Fourier based and Hadamard based schemes are proposed for implementing the analog spatial decoupling. For the multiple-PB case, the corresponding design problem is more challenging, making it hard to extend the solution for the single-PB counterpart. To tackle this problem, a systematic solution approach is proposed for analog decoupling with multiple PBs. © 2016 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/229801
ISBN
ISSN

 

DC FieldValueLanguage
dc.contributor.authorZhu, G-
dc.contributor.authorHuang, K-
dc.date.accessioned2016-08-23T14:13:21Z-
dc.date.available2016-08-23T14:13:21Z-
dc.date.issued2016-
dc.identifier.citationThe 2016 IEEE International Conference on Communications (ICC 2016), Kuala Lumpur, Malaysia, 22-27 May 2016. In Conference Proceedings, 2016-
dc.identifier.isbn978-147996664-6-
dc.identifier.issn1550-3607-
dc.identifier.urihttp://hdl.handle.net/10722/229801-
dc.description.abstractA practical architecture for wirelessly powered communications (WPC) with dedicated power beacons (PBs) deployed in existing cellular networks, called PB-assisted WPC, is considered in this paper. Assuming those PBs can access to backhaul network and perform simultaneous wireless information and power transfer (SWIPT) to the energy constrained users, the near-far problem in the PB-assisted WPC system is first identified. Specifically, the significant difference of the received power of SWIPT signal (from a PB) and information transfer (IT) signal (from a base station) due to different transmission ranges leads to extremely small signal-to-quantization-noise ratio (SQNR) for the IT signal after quantization of the mixed signals. To retrieve the information carried by the SWIPT and IT signals respectively, it is essential to decouple the strong SWIPT and the weak IT signals in analog domain. To this end, a novel technique called analog spatial decoupling using only simple components such as phase shifters and adders is proposed in this paper. In particular, for the single-PB case, the optimal Fourier based and Hadamard based schemes are proposed for implementing the analog spatial decoupling. For the multiple-PB case, the corresponding design problem is more challenging, making it hard to extend the solution for the single-PB counterpart. To tackle this problem, a systematic solution approach is proposed for analog decoupling with multiple PBs. © 2016 IEEE.-
dc.languageeng-
dc.publisherIEEE. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000104-
dc.relation.ispartofIEEE International Conference on Communications Proceedings-
dc.rightsIEEE International Conference on Communications Proceedings. Copyright © IEEE.-
dc.rights©2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.-
dc.titleAnalog spatial decoupling for tackling the near-far problem in wirelessly powered communications-
dc.typeConference_Paper-
dc.identifier.emailHuang, K: huangkb@eee.hku.hk-
dc.identifier.authorityHuang, K=rp01875-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1109/ICC.2016.7511514-
dc.identifier.scopuseid_2-s2.0-84981299198-
dc.identifier.hkuros262818-
dc.publisher.placeUnited States-
dc.customcontrol.immutablesml 161003-

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