Energy-efficient design for TDBC-based two-way relay network with weighted fairness

Basem M. Elhalawany, Osamu Muta, Maha Elsabrouty, Hiroshi Furukawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In two-way relay network (TWRN), end nodes may have different quality-of-service (QoS) requirements according to their priority, traffic demand, and/or their downlink and uplink split ratio. In this paper, the heterogeneity among network users that have different traffic load/demands is considered by assuming a weighted fairness between the two end nodes. An energy efficient design is proposed for two-way relaying (TWR) with time division broadcast (TDBC) protocol that minimizes the allocated power to the two transceivers and the relay node under a weighted quality-of-service (QoS) bidirectional data rates requirement with weighting factor (a). This design utilizes the signal combining process at the relay node in TDBC, also known as relay power allocation (RPA), to provide a new simpler way to ensure the weighted rates without increasing the complexity to control different power allocation of the three nodes. Adaptive calculation of the relay power allocation factor, e, is adopted for combining the two received signals to satisfy the QoS requirements. Simulation results show an improvement in the efficiency in terms of the average allocated power and an improved users' fairness compared with scenarios where a predetermined fixed value of e is used.

Original languageEnglish
Title of host publication2014 International Conference on Connected Vehicles and Expo, ICCVE 2014 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages968-973
Number of pages6
ISBN (Electronic)9781479967292
DOIs
Publication statusPublished - Jan 1 2014
Event3rd International Conference on Connected Vehicles and Expo, ICCVE 2014 - Vienna, Austria
Duration: Nov 3 2014Nov 7 2014

Publication series

Name2014 International Conference on Connected Vehicles and Expo, ICCVE 2014 - Proceedings

Other

Other3rd International Conference on Connected Vehicles and Expo, ICCVE 2014
CountryAustria
CityVienna
Period11/3/1411/7/14

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Automotive Engineering
  • Control and Systems Engineering
  • Transportation

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