Rate Control for Wireless-Powered Communication Network With Reliability and Delay Constraints

We consider a two-phase Wireless-Powered Communication Network under Nakagami-m fading, where a wireless energy transfer process first powers a sensor node that then uses such energy to transmit its data in the wireless information transmission phase. We explore a fixed transmit rate scheme designed...

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Bibliographic Details
Published inIEEE transactions on wireless communications Vol. 18; no. 12; pp. 5791 - 5805
Main Authors Alcaraz Lopez, Onel L., Alves, Hirley, Souza, Richard Demo, Montejo-Sanchez, Samuel, Garcia Fernandez, Evelio Martin
Format Journal Article
LanguageEnglish
Published New York IEEE 01.12.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Asymptotic properties
Communications networks
Delay
Delays
Economic models
finite blocklength
Mathematical analysis
Network reliability
Protocols
rate control
Receivers
Reliability
reliability and delay constraints
Signal to noise ratio
Wireless communication
Wireless communications
Wireless power transmission
Wireless sensor networks
WPCN
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Summary:We consider a two-phase Wireless-Powered Communication Network under Nakagami-m fading, where a wireless energy transfer process first powers a sensor node that then uses such energy to transmit its data in the wireless information transmission phase. We explore a fixed transmit rate scheme designed to cope with the reliability and delay constraints of the system while attaining closed-form approximations for the optimum wireless energy transfer and wireless information transmission blocklength. Then, a more-elaborate rate control strategy exploiting the readily available battery charge information is proposed and the results evidence its outstanding performance when compared with the fixed transmit rate, for which no battery charge information is available. It even reaches an average rate performance close to that of an ideal scheme requiring full Channel State Information at transmitter side. Numerical results show the positive impact of a greater number of antennas at the destination, and evidence that the greater the reliability constraints, the smaller the message sizes on average, and the smaller the optimum information blocklengths. Finally, we corroborate the appropriateness of using the asymptotic blocklength formulation as an approximation of the non-asymptotic finite blocklength results.
ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2019.2939127