Cooperative Wireless Powered Communication Networks with Interference Harvesting

Wonjae Shin, Mojtaba Vaezi, Jungwoo Lee, H. Vincent Poor

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

A cooperative wireless-powered communication network protocol is proposed, in which user far away from a hybrid access point (H-AP) is capable of harvesting wireless powers by overhearing the uplink signals of users that are relatively nearer to the H-AP, in addition to downlink signal broadcast by the H-AP. In this setting, time allocations for the downlink transmission of the H-AP and the uplink transmission for the users are jointly optimized for two different purposes. First, the weighted sum-rate maximization problem is solved for a given total transmission time. Then, the total transmission time is minimized under a minimum rate constraint, and an efficient algorithm is also presented to solve the optimal solution by a line search strategy. Numerical results demonstrate that the proposed schemes significantly increase the far user's rate, which in turn improves user fairness and transmission delay.

Original languageEnglish (US)
Pages (from-to)3701-3705
Number of pages5
JournalIEEE Transactions on Vehicular Technology
Volume67
Issue number4
DOIs
StatePublished - Apr 2018

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

Keywords

  • Wireless powered communication networks
  • transmission delay
  • user cooperation
  • user fairness

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