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Computer Science > Information Theory

arXiv:1606.02033 (cs)
[Submitted on 7 Jun 2016 (v1), last revised 28 Oct 2016 (this version, v2)]

Title:User Cooperation for Enhanced Throughput Fairness in Wireless Powered Communication Networks

Authors:Mingquan Zhong, Suzhi Bi, Xiaohui Lin
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Abstract:This paper studies a novel user cooperation method in a wireless powered communication network (WPCN), where a pair of distributed terminal users first harvest wireless energy broadcasted by one energy node (EN) and then use the harvested energy to transmit information cooperatively to a destination node (DN). In particular, the two cooperating users exchange their independent information with each other to form a virtual antenna array and transmit jointly to the DN. By allowing each user to allocate part of its harvested energy to transmit the other's information, the proposed cooperation can effectively mitigate the user unfairness problem in WPCNs, where a user may suffer from very low data rate due to the poor energy harvesting performance and high data transmission consumptions. We derive the maximum common throughput achieved by the cooperation scheme through optimizing the time allocation on wireless energy transfer, user message exchange, and joint information transmissions. Through comparing with some representative benchmark schemes, our results demonstrate the effectiveness of the proposed user cooperation in enhancing the throughput performance under different setups.
Comments: This paper has been accepted by the IEEE International Conference on Telecommunications (ICT), Thessaloniki, Greece, May 16-18, 2016
Subjects: Information Theory (cs.IT); Networking and Internet Architecture (cs.NI)
Cite as: arXiv:1606.02033 [cs.IT]
  (or arXiv:1606.02033v2 [cs.IT] for this version)
  https://doi.org/10.48550/arXiv.1606.02033
Related DOI: https://doi.org/10.1109/ICT.2016.7500446

Submission history

From: Mingquan Zhong [view email]
[v1] Tue, 7 Jun 2016 06:03:45 UTC (185 KB)
[v2] Fri, 28 Oct 2016 17:41:58 UTC (181 KB)
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